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Epson SEIJ98006 User's Manual

1.
2. 4 a Tho g lt 723 z se007 030eT8 7 yop aia N 81 3013 Die oli Bio oa 5 D8 m Emm 1 L sad Piss I F azs ia far E a5 ua 58 rmacru 73 CATAG 75 56 asrTAG 3 SEY BF TAG LES M L 5 g a4 smm 7 Es Y USBTNTO Ti Sa y 12 Es TT 15 ES 14 Pies 15 7 i 252 ayak 3 15 WA gt Te 22 31 En cpuct cer 33 Xi N FL CRUA eae NFWatPiiczoa s gooeUC 7808 Cuan El 18 OMHZ CLR tM 7 ETRAS veo ourh CERTES m 4 op 7 erect ji JONICS 8 M H LLO Hua a 120 HWCLK 1 114 HacK HB HHFA Hir N 11 HWSDATA O HSKO 45 HWSCLK Ley eid Hee 4 2 ous ta G HaLoo xo faz Hatgo Qt HALO 2 pat tog CO Be COB AXD tarl fiver 102 HSL 2 E E Hooy gt GND Se HE02 728 489 5 Ue 101 50 81 a ay 100 dA 108 HTNV MIT cost 0 610 f Sov Sov TT ROO 10 T ree ot cioe Veis mE y 77 m 900 ENCB ENCA z i 2 OPr A CN10 8 F MOTOR od od oid DIFSS A A A lens Legs FCTL on 34 EXC LENDTHO FY CN11 CR MOTOR Di 15K 0 5 AGA jay 15K
3. 7 4 Parts List Table 7 22 Parts List 2 6 No Description No Description Table 7 21 Parts List 1 6 140 GUIDE SHIELD PLATE 410 POWER CABLE ASSY No Description No Description 142 CLAMP 450 BOARD ASSY PANEL 100 HOUSING UPPER 119 LOCK STACKER 145 CP SCREW 500 PRINTER 101 HOUSING LOWER 120 COMPRESSION SPRING 2 94 MECHANISM ASP M4P10 100 102 COVER PRINTER 121 SHIELD PLATE MAIN UPPER 146 C B S SCREW 501 FRAME UPPER RIGHT 147 C B S SCREW 502 FRAME LOWER 103 PAPER SUPPORT ASSY 122 Tak PLATE MAIN UPPER 148 C BS TITE SCREW 503 FRAME ASSY LEFT 104 HOUSING REAR 123 GROUNDING PLATE I F UPPER 149 C B S TITE SCREW 904 FRAME RIGHT 105 COVER CONNECTOR UPPER 124 GROUNDING PLATE I F 10 AS SOREN S6 FAN 208 FRAUE CUIDE GR 106 STACKER ASSY 125 GUIDE I F BOARD 151 CR ITE O F ZN 506 PEVER RG 107 HOUSING PANEL RIGHT 126 SHIELD PLATE MAIN UPPER l we CESCAEN ak SA TORSION SPRING G47 F 154 C B P TITE SCREW 3X6 F ZN 508 TIMING BELT 108 KEY TOP 129 SHIELD PLATE P S LOWER 155 C P P TITE SCREW 4X12 F ZN 509 HOLDER PULLEY DRIVEN 109 OPTICAL PLATE 130 SHIELD PLATE P S UPPER 156 C B O SCREW 4X8 F ZG 510 PULLEY DRIVEN 110 SLEEVE OPTICAL PLATE 131 GROUNDING PLATE P S 180 LABEL CAUTION 1 511 SHAFT PULLEY DRIVEN 111 SHEET PROTECT
4. D3SBA60 4101 T4 ES PT 91 LA 14 3 Ka 100 4 ZD54 ig TES NUMA34L a 7088 A HZS36 187 100 RA 1L R56 D8 ANY WA 14 750K 1 2N 8 150 1551 HT4 11PB15 HT2 16PB16L35A COLO D3SBA60 4101 x a Ka 100 910K 1 2 Ici NUM43 41 11PB151 187 100 a 5V 5v QH 4 5v OHE LED3 SLR 342VRTB7 s LED3 Q42 4 R 4 LED2 n _SLR 342VRTB7 Lep2 H d R 4 LEDIs SLA 342VATB7 LeD1 04 pr 4 LEDO ua SLR 342MGTB7 7 PE LEDO O 4 sw1 045 d1 dal sw1 EVQ PEEO4M LINK swe OL su2 EVQ PEEO4M PE 4 GND O 4 enD O 4 psc Ops le 5 4 4 s SWO See SPPH222SNXAX 3 j2 1 POWER swo O 4 717 GND PANEL Mode Board sheet Rev EPSON Stylus COLOR 900 C265PNL BOARD 1 of 1 0
5. Pin Signal Name I O Function Pin Signal Name I O Function 1 COMe O Power voltage for the Nozzle Row E Yellow 1 PFA I O Phase A Input Output data 2 GND2E leam NOE Bowie When inputting connects a current from the Phase A to the ground via the coil 3 GND2E Ground for the Nozzle Row E 2 PF B OB Phase B Input Output data 4 ANODE5 Row E temperature detection analog signal When inputting connects a current from the Ph B to th d via th il 5 B2 O Outputs dot selection signal to the Row B SE ieee ee aoa EA black 3 PF A I O Phase A Input Output data When inputting connects a current from the ND E 2 ground Phase A to the ground via the coil 7 B1 O Outputs dot selection signal to the Row A black g 4 PF B O Phase B Input Output data When inputting connects a current from the 8 GND Ground Phase B to the ground via the coil 9 C O Outputs dot selection signal to the Cyan row 10 GND Ground 11 M O Outputs dot selection signal to the Magenta Table 7 7 Connector Pin Assignment CN11 row Pin Signal Name I O Function 12 GND Ground 1 CRA VO Phase A Input Output data 13 Y O Outputs dot selection signal to the Yellow row When inputting connects a current from the 14 GND Ground Phase A to the ground via the coil 15 CLK O Synchronization clock signal for dot selection 2 CRB VO Phase B Input Output data signal transmission
6. Connector Function Refer to C265PSB PSE Chapter 1 Interface Power Supply CN1 Parallel I F connector specifications Board B I F Type B I F M CM gt CN2 Type B I F connector ype B I F Manua Chapter 1 Interface CN2 CN3 CN3 Mac Serial I F connector specifications TN Chapter 1 Interface CN5 CN6 Bk M C nozzle drive ee USE TE connector specifications Logic Power i the Line Yelow nozzle drive i CN5 Power supply Logic line Table 7 2 i CN6 Power supply Power line Table 7 3 PF Motor drive i pply i CN7 CR Motor drive i E ee y C265MAIN i CN8 Bk Magenta Cyan nozzle drive able 7 Main Board ASF Motor drive i CN9 Yellow nozzle drive Table 7 5 Cooling Fan drive CN10 PF motor drive Table 7 6 Thermistor on the heat sink CN11 CR motor drive Table 7 7 ASF Solenoid drive CN12 ASF motor drive Table 7 8 i CN13 Cooling fan drive Table 7 9 ASF Sensor i PE Sensor i CN14 Thermistor on the heat sink Table 7 10 HP Sensor i CN15 Panel and Sensors HP PE ASF Table 7 11 PT Control Panel CN16 ASF solenoid drive Table 7 12 Mac Serial F i yaaa i Type B I F Parallel I F Figure 7 1 Cable Connection of the Stylus Color 900 Appendix Connector Summary EPSON Stylus Color 900 Revision c Table 7 2 Connector Pin Assignment CN5 Table 7 4 Connector Pin Assignment CN8 Pin ti
7. lt Resistance 8 1 Q 10 gt Troubleshooting Overview 88 EPSON Stylus Color 900 Revision C Table 3 16 Remedies for Fatal Error continued Table 3 15 Remedies for Fatal Error continued Step Check Point Actions Step Check Point Actions 6 Is the lever Check if the two lt Pump ASF Switching Mechanism gt 9 Is the CRHP sensor Check for the correct voltages at 3 pin connector securing the hooks securing defective shown in the figure below planetary gear the planetary gear Pump ASF Motor 3 Turn the printer on and check the voltage is correct dislocated from fixing lever to the Lever Fixing the as follows the frame Pump ASF switch Planetary Gear When the CR has come in the home position the Has the tension mechanism are voltage rises to 2 4 VDC or higher spring come off released from the When the CR has left the home position the frame e voltage drops to 0 7 VDC or lower Also check the tension spring s Y ii Iron Core in condition on To Tension Spring H PN To Pin 3 __ CRHP 7 Has the coil for Measure the internal coil resistance of the pump ASF V the Pump ASF motor in the same manner as for the CR motor Step 4 motor burnt lt Resistance 7 0 Q 10 gt 8 Is the coil for the Referring to the figure below measure the coil ASF solenoid resistance of the solenoid c
8. EPSON Stylus Color 900 Revision C 6 1 1 2 Maintenance Request Error The Maintenance Request Error is indicated when the waste ink absorber located in the lower case becomes near full The table below shows methods and procedures necessary to clear the Maintenance Request Error Table 6 1 Solution for the Maintenance Request Error No Options Description Reference 1 Using the control e Reset waste ink counter Chapter 1 Section panel NOTE 1 4 Unlike other printers the waste ink counter reset operation is not common to Timer IC nor I F selection reset 2 Using the program Waste ink count reset Chapter 5 Section 5 2 8 E Be sure to replace the waste ink pads before or after clearing the Maintenance Request Error Otherwise your customer may encounter ink overflow E The maximum counter value for each pad is as follows Left pad 35800 Right pad 33300 However the adjustment program urges to set 25800 left and 23 300 right as a reference values for pad replacement 10 000 points is deducted from each maximum value Maintenance Overview 164 EPSON Stylus Color 900 6 2 Lubrication and Adhesion The types lubricants used in the Stylus Color 900 are specified by fie SEIKO EPSON Lubricate the printer if necessary under the following conditions E Oil has been wiped off during cleaning E Printer has been disassembled assembled Specific part s in the printer has
9. 02 for S E ASIA EPSON STYLUS COLOR 900 No 7 10056 Rev 01 EPSON Stylus Color 900 Revision c 7 6 Circuit Diagrams See the following pages for the circuit diagrams below C265 Main Board 1 2 C265 Main Board 2 2 C265 PSB Board C265 PSE Board C265 PNL Board OoOdda oO Appendix Circuit Diagrams 195 EE MROM_ 16M 1 Acts ees 5 Maza pis at See 144 450 Bia fee MAOMO Q T 33 Fale BSE or Eo E orate l ejaia 512 25 gt s ES Psc ey i Faai BiH E Es Pos Ue E a ash AS Boies f 3g 412 DS fsg maola ps l2 Fagyat 0218 3 aig pir E 2 8 oa Ha Zen z alas BAZ AN Zin 5 a vo HS ZEN E alte a 3 Ss ZER is Haa acl a acts i 43 3 4 Tola veo 2 etd 3 11 Ro Less acle g 4 3 O tu act 6 E E a ais ie zat sf 7 AE rael 1 21 AC 4 a WE CIACL 1 21 amp AC Buk E E Hun f A E HE A35 ypy 200 1 4N NES 3B qn 200 4 4W 17 rs 4 sono tav B47 ANA 200 AN 49 Al h TEEETNT y Bi INIFINT Ea OREO 49 DENDO 25
10. oooomocccccnnncoccncnoncccnncnnnnccnnnnnnnnnrnnnnnnnnnrnnnnnnnn rn 32 Special Setting Mode scanio e E aa a E E 34 Printer Condition and Panel Status ooococcccnncoccccccnnancnnnnnncnnnnnnnnnanananannnns 35 Error Statuses te a ee a a a la a 36 A EE EE E TE ATE TO 36 Paper Out esise ita iia aria 36 Paper JaM aia a i a E 36 NO Ink Garnridga recia E 36 Maintenance Request iirin oE T o Arn 36 Fatal Errors irradia 36 Printer Initialization 2 0 0 0 cece cece e cece eenee eee eeeeaeeeeseeaaaeeeeeeeaaeeeeeeenaas 37 Component Layout eesse eenee ee tresin eee eeeaaaeeeeeeeaaeeeeeeeaaeeeenee 38 Printer Mechanism cececeeeeeeeeceeeeceeeeeeeeeeeeaaaeaeceeeeeeeeseeeeecnacaeeaeeeeeees 38 C265 Main Board 20 coincida a i aiiai 39 C265 PSB PSE Board a uaaa a ten ites alee een ee 41 C265 PNL Board acia aei a ei aaa a a aaea aai itida 42 C265 Relay Board serenti anina a eA F AA RAA NA EAA E TARAIRE REAS 42 Operating Principles OVEIVICW o E E iaa 44 Printer Mechanism Operating Principles 44 Carriage Mechanism ccccceeeeeeeeeceeeeecneeeeeeenaeeeeeeeaaeeeeeetaeeeeeeenaeeeenee 46 Printing MechaniSM secs icieitendsisetecttaleancttenivadatete res vacten A tented 48 Paper Load Mechanism 0 ececcceeeeeeeceeeeeeeeeeeeeeeeeaeeeeseeaaeeeeeseaaeeeeeeeaaas 49 Paper Feed Mechanism etenee tenra i EAR EN 51 Pump ASF Switch Mechanism c cccceeeeeseeceeeeeeneeeeeeenaeeeeeeenaaeeeeeee 52 Pump Carriage Lock H
11. 8 pin mini circular connector Recommended Cable Apple System Peripheral 8 Cable Connector pin assignment and signal See Table 1 14 Table 1 14 Pin Assignment Pin No rain 1 0 Description 1 SCLK O Synchronous clock signal 2 CTS Clear To Send 3 TXD O Transmit Data 4 SG Signal Ground 5 RXD Receive Data 6 TXD O Balanced Transmit Data 7 DTR O Data Terminal Ready 8 RXD Balanced Receive Data Interface Table 1 15 X On X Off and DTR Protocol State Buffer Space X ON X OFF DTR Busy Less than 3072 bytes Send X OFF code OFF Ready More than 5120 bytes Send X ON code ON EPSON Stylus Color 900 Revision C 1 3 4 USB Interface O Standard Based on the following Universal Serial Bus Specifications Rev 1 0 Universal Serial Bus Device Class Definition for Printing Device Version 1 0 O Bit Rate 12 M bps O Data Encoding NRZI O Adaptable Connector USB Series B O Recommended Cable Length 2 meters Table 1 16 Pin Assignment and Signal of the USB I F Pin No Signal 1 0 Description Name Cable power Maxi power consumption 1 Vcc gt is 100 mA 2 Data Bi D Data 3 Data Bi D Data pull up to 3 3 V via 1 5 K ohms resistor 4 Ground Cable Ground Pin 3 Pin 4 Figure 1 9 USB Pin Assignment Product Description 1 3 5 Printer Language and Emulation ESC P2 IBM X24E emulation EPSON
12. Adjustment 23 24 25 26 27 28 29 30 22 Perform the same operation as the step 17 2 and 17 3 Press the Enter key in the screen shown in Figure 5 28 The printer runs the Head Angular Adjustment Pattern The screen shown in Figure 5 27 appears again Repeat Step 20 through Step 24 three more times and print 5 patterns on one page of A4 paper in sequence After printing 5 patterns the printer ejects the sheet and the program automatically returns to the screen shown in Figure 5 27 From the 5 output check patterns select the most desirable one based on the reference patterns given in Figure 5 17 and Figure 5 18 and ensure the angular lever position for the selected pattern In the screen shown in Figure 5 27 select Re Adjustment and set the angular lever to the position selected as the most suitable in Step 27 The screen returns to the condition shown in Figure 5 28 In the screen Figure 5 28 press the Enter key The printer prints with the angular lever set to the selected position The pattern however remains in the lower part of the mechanism frame and can not be seen The screen changes to the condition shown in Figure 5 27 NOTE 31 Adjustments Do not eject the sheet used in Step 30 by pressing the Eject button to check the pattern If you do so mismatching between the firmware and the special command for the adjustment will occur which causes the carriage to move irre
13. Clear the protection counter values indicates the reference values To clear the counters continue to Step 7 NOTE Before clearing the protection counters be sure to replace the waste ink pads with new ones Otherwise the user may encounter ink leakage Figure 5 46 Initial Protection Counter Screen Check Clear Selection 7 Disconnect the printer from the PC and replace the waste ink pads with new ones referring to Chapter 6 Maintenance 4 Select Check the protection counter values 8 Referring to Section 5 2 1 perform the preliminary operation Then select Maintenance from the main adjustment menu and next Indication of the counter value for the waste ink pad Adjustment Adjustments 155 EPSON Stylus Color 900 Revision C 9 Select Clear the Protection Counter Value 12 The following screen appears 10 The following screen appears Now clearing the protection counter Have not replaced Figure 5 49 Protection Counter Clear End Screen Figure 5 48 13 Press the ESC key twice to return to the initial protection counter Selection Menu before Clearing the Protection Counter screen Figure 5 46 A 14 Select Check Protection Counter to verify the right and left ink pad 11 Select Already replaced If you have selected Have not replace counter values are both 0 because you have not replaced the waste ink pads the screen returns
14. Did you loosen the screw on the left side of the CR No After it takes 3 minutes Esc Previous Up Down arrows Select Enter OK Did you loosen the screw on the left side of the CR No Esc Previous Up Down arrows Select Enter OK Ca d le El ja Al Figure 5 22 Recovery from Unmagnetized Status Adjustment Press the Enter key EPSON Stylus Color 900 Revision C 13 The following screen appears and the carriage automatically moves toward the 80th column z el o sje Al Please be sure not to move the CR during any operation in this adjustment In case of 1st print Enter OK Figure 5 23 Screen after Head Angular Adjustment is Selected 14 Loosen the screw securing the head fixing plate on the right side of the carriage unit by turning it 90 180 Do not remove it completely Screw right securing the Head Fixing Plate Cap unit Figure 5 24 Screw Securing the Head Fixing Plate on the Right 15 Press the Enter key in the screen Figure 5 23 Adjustments 144 EPSON Stylus Color 900 Revision C 16 The following screen appears NOTE fe A During the step 12 onward the printhead is left away from the capping position Therefore please make this adjustment as fast as possible to prevent the printhead surface from drying Otherwise In case of 1st print you will spend extra time on solving the print
15. ISO Latin 1 PC 858 ISO 8859 15 Feeding method Friction feed with ASF These character tables can not be selected in the Default setting Line spacing 1 6 inch 1 8 inch or programable at 1 360 mode inch Paper path Cut sheet ASF Top entry Front out Feed speed 192 360 inch feed 116 ms Product Description Input data buffer Specifications 176 3 mm second 6 94 inch secona Continuous feed 256 KB 12 EPSON Stylus Color 900 Revision C Table 1 3 Character Tables and Available Typefaces Character Tables Bit map font Scaleable font c Italic table PC 437 US Standard Europe 2 PC 860 Portuguese PC 850 Multilingual PC 861 Icelandic PC 863 Canadian French p PC 865 Nordic BRASCII EPSON Roman amp Abicomp Roman 8 EPSON R S ISO Latin PC 858 EPSON Sans Serif oman ISO 8859 15 EPSON Courier EPSON Sans Serif EPSON Prestige EPSON Roman T Italic table PC 437 US Standard Europe i PC 850 Multilingual PC 860 Portuguese EPSON Script EPSON JanS Seri H PC 861 Icelandic PC 865 Nordic BRASCII Abicomp Roman8 ISOLatin1 PC 858 ISO 8859 15 PC437Greek PC 852 East Europe PC 853 Turkish PC 855 Cyrillic EPSONIR c PC 857 Turkish PC 866 Russian oman Oo h PC 869 Greek MAZOWIA Poland EPSON Sans Serif mae aoe 2 Code MJK CSFR ISO 8859 7 Latin Greek EPSON Courier ans oen a 1T Turkish Ea Bulgarian EPSON Prestige 2 stonia EPSON Script 1SO 8859 2 ISO Latin 2 PC 866 LAT P
16. NOTE The GND can be output by placing the probe of NOTE The GND can be output by placing the probe of the oscillo scope to the tapped hole in the the oscillo scope to the tapped hole in the bottom plate on the board with a screw bottom plate on the board with a screw Troubleshooting Overview 93 Revision C EPSON Stylus Color 900 Step 1 Table 3 25 Pump ASF Motor does not Operate Check Point Getting ready for inspecting waveforms Action The connector used to control the Pump ASF motor is indicated in the figure below Using the oscillo scope check the waveform for each phase output from the indicated connector To check the waveform press the Load Eject button to attempt the ASF paper feeding Be sure to leave the cable for the Pump ASF motor connected Phase A Phase B Phase A Phase B from the Pin 1 mark NOTE The GND can be output by placing the probe of the oscillo scope to the tapped hole in the bottom plate on the board with a screw Note the connector has no ground line since this printer drives the motor with the bipolar system Troubleshooting Table 3 26 Pump ASF Motor does not Operate continued Step 2 Check Point Check of the waveform and remedies Action While trying to drive the Pump ASF motor the waveform output from each phase should be as shown below If the waveforms output from each phase are as shown below replace the Pump ASF motor I
17. Width 220 mm 8 7 x Length 110 mm 4 3 C6 Width 162 mm 6 4 x Length 114 mm 4 5 5 x 8 Width 220 mm 8 7 x Length 132 mm 5 2 O Thickness 0 16 mm 0 006 0 52 mm 0 02 O Weight 459 m 12lb 759 m 20Ib O Quality Bond paper Plain paper Airmail NOTES 1 Printon envelope at normal temperatures only 2 Place the longer side of the envelope horizontal 1 2 3 4 Index Card O Size A6 Index card Width 105 mm 4 1 x Length 148 mm 5 8 5 x 8 Index card Width 127 mm 5 0 x Length 203 mm 8 0 10 x 8 Index card Width 127 mm 5 0 x Length 203 mm 8 0 O Thickness Less than 0 23 mm 0 0091 O Paper Types EPSON special media 1 2 3 5 Self Adhesive Sheets O Size A4 Width 210 mm 8 3 x Length 297 mm 11 7 O Paper Types EPSON special media Specifications 15 EPSON Stylus Color 900 Revision C 1 2 3 6 Photo Paper O Size A4 Width 210 mm 8 3 x Length 297 mm 11 7 Letter Width 216 mm 8 5 x Length 279 mm 11 0 4x6 Width 102 mm 4 x Length 152 mm 6 Panoramic Width 210 mm 8 3 x Length 594 mm 23 4 O Paper Types EPSON special media 1 2 3 7 Photo Stickers O Size A6 with 4 or 16 frames Width 105 mm 4 1 x Length 148 mm 5 8 O Paper Types EPSON special media Product Description Specifications 16 EPSON Stylus Color 900 Revision C 1 2 4 Printable Area O C
18. abnormal temperature detection part and 2 mechanism status detection part The former is controlled by the CPU and the latter is controlled by 2 ASICs E05B59 IC2 and E05B60 IC3 Thermistor on the heat sink on the main board Location TH 1 on the board HDSAMI HPDSAMI THM ANODE AN4 109 4 HD64F2357 IC1 af 7 AN21407 9 An 106 10 ANO ANODE2 ANODE3 ANODE4 4 CN9 Row A 1 Abnormal temperature detection part This abnormal temperature detection part is composed of 3 thermisotrs and the temperature detection circuit which is included in the nozzle selector inside the printhead The CPU s analog ports used for temperature detection and their functions are as follows Printhead surface Inside the printhead RowB RowC RowD RowE Nozzle Selector Figure 2 13 Sensor Circuit Block Diagram Abnormal Temperature Detection Circuit Operating Principles Electrical Circuit Operation Principles 62 EPSON Stylus Color 900 Revision C O Operating Principles AN7 Pin 112 The TH1 located between 2 pre driver ICs the head driver ICs IC 15 and IC16 on the main board monitors temperatures around the board A Pre Driver IC is exclusively developed to create intricate trapezoidal waveforms which vary depending on the model It uses 42 VDC and high frequency to produce trapezoidal waveforms Therefore if any relevant trouble has occurred it is assumed that the driver i
19. blown 5 Is CN2 or CN3 on the Check that the connectors CN2 and CN3 which lt CN5 Side CN3 Side 90 Revision C Table 3 20 Isolating the Faulty Part on the Power Supply Board continued Check Point Is the PNP connection transistor defective Action Check the PNP connection transistor on the C265 PSB SE board in the same manner described in the previous step Step 1 Step 2 Ela Step 1 Off Step 2 On Step 3 Off Step 4 On Is the 5 V regulator IC51 defective Check the IC51 for the oscillation waveform measured by using a oscillo scope output from the Pin 5 If the output waveform is as shown below it means the IC51 is working properly Oscillation waveform 5 pin OSC EPSON Stylus Color 900 Table 3 19 Isolating the Faulty Part on the Power Supply Board continued Step Check Point Action Step 9 Is the main switching Check the electrical continuity of the switching 11 FET Q1 defective FET by trying four patterns below Be sure to pay attention to the polarity If the main switching FET is good the findings should be as shown under the figure Step 1 Step 2 Step 1 Off Step 2 On Step 3 Off Step 4 Off 10 Is the NPN connection Check the electrical continuity of the NPN 12 transistor defective connection transistor on the C265 PSB SE board by trying four patterns below Be sure to pay attention to the polarity If t
20. rectification circuit The minus component of the alternate wave is eliminated as the result Then the voltage is smoothed by the electrolysis condenser C11 for stabilized DC voltage and the current is applied to the primary side of the transformer T1 The current however does not flow into the primary side of the transformer T1 if the main switching FET Q1 located in the primary side is off The Q1 comes on when the voltage is applied to the gate through the R28 a starting resistor when the printer is turned on While the Q1 is on current does not flow into the secondary side because a reverse characteristics diode is used to connect to the secondary side The transformer T1 is gradually charged with the current When it is full and not charged any more the gate voltage of the Q1 starts going down gradually At this point C13 abruptly pulls in the gate voltage of the Q1 to turn the Q1 off Operating Principles Electrical Circuit Operation Principles 56 EPSON Stylus Color 900 Revision C Once the Q1 is off the energy charged in the primary side flows into the secondary side all at once This occurs because the energy transfers in the same direction as the reverse diode characteristics with the Q1 off The secondary side of the transformer T1 which has the specified numbers of coiling lines for 42 VDC production creates the 42 VDC out of the energy led to the secondary side by the electromagnetic induction The se
21. to the rear PG wider following conditions This adjustment can not be made without removing the upper case 4 Ifthe carriage is locked release the carriage lock from the back of the printer mechanism 1 Any of the following operations which involve carriage guide shaft removal has been performed 5 Move the carriage to the center and place the thickness gauge Replacing the carriage guide shaft Specifications 1 14 mm 5 cm in length over the right end of the Replacing the felt oil pad at the back of the carriage Front Paper Guide s top surface when supplying O 8 oil Replacing the carriage unit Front Paper Guide 2 Right left parallelism adjustment bushing has been moved removed or replaced 1 Set the right and left parallelism adjustment bushings to the middle position of the corresponding adjustable range Make sure the screws fixing the parallelism adjustment bushings are loosened for this operation Parallelism Adjustment Bushing Right Figure 5 53 Setting Position of the Thickness Gauge Parallelism Adjustment Bushing Left Center value in the adjustable range 6 Bring the PG lever blue back to the front PG narrower 7 By pulling the timing belt manually move the carriage to the position where the thickness gauge is set NOTE Do not push the carriage unit directly to move it Doing so presses the carriage down and the paper gap adjustment is not correctly done Fixing
22. 13 PC 865 2CH IEEE1284 4 for USB 0 Auto 00H 01H Gr 1 On 14 PC 861 15 BRASCII 2 Off 16 Abicomp 17 Roman 8 DDH 25H reserved for USB 00H 18 ISO Latin1 19 PC 853 Beetle rer 20 PC 855 21 PC 852 22 PC 857 23 PC 866 A BUSY signal delay time from fall edge of a STB signal Fast Max 1MB s 24 PC 869 25 MAZOWIA B E f de ECP pr Nibble PDE Bade MK Be NO Shot Selects ransfer mode pr Nibble C Enables or disables reverse transfer When disabled ignore SLN signal 28 SO aun T ea Bulgaria 30 PC 774 31 Estonia 2 See NOTE at the end of the section 32 ISO 8859 2 33 PC 866 LAT 34 PC 866UKR 35 PC AR864 36 PC APTEC 37 PC 708 38 PC 720 39 Hebrew7 40 Hebrew8 41 PC 862 42 PC 858 43 ISO 8859 15 Appendix EEPROM ADDRESS MAP 177 EPSON Stylus Color 900 Revision c Table 7 17 EEPROM Address Map 5 8 Table 7 18 EEPROM Address Map 6 8 QPIT Factory A QPIT Factory Address Explanation Settings settings settings Address Explanation Settings settings settings 34H Software bit7 Software 00H 00H 40H Password 1 OFH A G M O ESC P 1 IBM Auto CR bit6 A G M 0 Off 1 On ALA al _ Zero Slash bit5 Auto CR 0 Off 1 On 42H Ink flag 1 bit7 Reserved 00H 10H i bit4 Zero slash ate cea ial it5 color one time Network I F mode SR 1290 bit4 Initial fill required Auto LF ble Reserv
23. 160 EPSON Stylus Color 900 Revision C 6 1 Overview 6 1 1 Maintenance When a printing malfunction or Maintenance request error has occurred take appropriate measures described in the following sections to solve the problem This section describes how to solve problems when a printing malfunction or maintenance request error has occurred Observe the instructions below to perform servicing appropriately For solutions for any other error conditions refer to Chapter 5 Troubleshooting battery on it Observe the instructions below when handling the battery E Do not short circuit the battery s electrodes EH Mount the battery with its polarity in the right direction or it may explode m Do not expose the battery to flames or excessive heat This C265 Main board in this printer has a lithium m Unplug the power cable from the AC power inlet iin before cleaning the printer E Never apply solvents such as thinner trichloroethylene or keton to clean the printer main body Use of a soft clean cloth is recommended For severe stain on the case use thinned neutral detergent Wet a cloth with detergent and wring the detergent well out of the cloth Do not use a hard brush for cleaning or it may scratch the case m Becareful no to damage any interior parts when cleaning inside the printer Maintenance Overview 162 EPSON Stylus Color 900 6 1 1 1 Cleaning the Printhead If your printout shows problems such a
24. 5 D 6 o o Green OG ad y p H Q Blue k oy White gt Figure 4 16 Printhead Removal 2 reinforcing plates on the FFC are installed correctly as described below White one on the left side of the printhead Blue one on the right side of the printhead When installing the printhead FFCs make sure the After removing replacing the printhead perform any necessary adjustments See Table 4 1 Disassembly Procedures 113 EPSON Stylus Color 900 Revision C 4 2 7 2 CR Motor Removal 1 Remove the printer mechanism See Section 4 2 2 E After removing replacing the CR Motor perform any 2 Release the carriage lock at the back of the printer mechanism then necessary adjustments See Table 4 1 move the carriage unit away from the home position See Figure 4 13 3 Remove two screws securing the CR motor to the printer mechanism and remove the CR motor Screw securing the CR Motor Figure 4 17 CR Motor Removal Disassembly and Assembly Disassembly Procedures 114 EPSON Stylus Color 900 4 2 7 3 PF Motor Removal 1 Remove the printer mechanism See Section 4 2 2 2 Remove the PF roller drive gear from the PF roller shaft PF Motor Pinion PF Roller Drive Gear Screws securing the PF Motor Figure 4 18 PF Motor Removal Disassembly and Assembly Revision C A high precision gear is used for the PF roller dri
25. CRHP sensor has come off Refer to Section 3 1 1 5 The connector for the CRHP sensor is disconnected The encoder belt has come off The encoder belt is not placed through the encoder located at the back of the carriage The ASF sensor has come off The connector for the ASF sensor is disconnected The coil for the CR motor has burnt The coil for the PF motor has burnt The lever fixing the planetary gear has come of the frame The tension spring is dislocated 7 Coil for the pump ASF motor has burnt 8 The coil for the ASF solenoid has burnt 9 The CRHP sensor is defective 10 The ASF sensor is defective Troubleshooting 3 1 1 1 Remedies for Paper Out Error This section provides check points and corresponding actions which are necessary when the Paper Out Error problem has occurred because of either of the following reasons NH Paper is set in the ASF hopper but not fed m Paper is fed but not detected by the printer Be sure to follow the steps in the order described in the tables NOTE If the finding for the question is Yes take the action described in the right column If No proceed to the next step Overview 81 Revision C EPSON Stylus Color 900 Table 3 4 Remedies for Paper Out Error Table 3 5 Remedies for Paper Out Error continued Step Check point Actions
26. Description 1 HostClk 19 l Host clock signal The DATAO through DATA7 signals represent data bits 0 to7 29 Dao E dea the 1284 extensibility request values to the printer 10 PrtClk 28 O Printer clock signal 11 PtrBusy Data Bit 3 7 29 O Printer busy signal and reverse channel transfer data bit 3 or 7 12 AckData Reg DataBit 2 6 28 O o a m request signal and reverse channel transfer 13 Xflag DataBit 1 5 28 O X flag signal and reverse channel transfer data bit 1 or 5 14 HostBusy 30 l Host busy signal 31 ANIT 30 l Not used 32 DataAvail DataBit 0 4 29 O Data available signal and reverse channel transfer data bit 0 or 4 36 1284 Active 30 l 1284 Active Signal 18 Logic H Eaa O Pulled up to 5V via 3 9K ohm resister 35 5V O Pulled up to 5V via 3 3K ohm resister 17 Chassis GND Chassis GND 16 33 9 30 GND Signal GND 15 34 NC Not connected In Out refers to the direction of signal flow from the printer s point of view Product Description Interface 27 EPSON Stylus Color 900 Revision C O X ON X OFF DTR protocol See Table 1 15 1 3 3 Mac Serial Interface O OoOdodda 0 o O Product Description Standard Synchronization Bit Rate Handshaking Word Format Based on RS 423 Synchronous Approximately 1 8 Mbps X ON X OFF DTR Protocol Start Bit 1 bit Data Bit 8 bit Parity Bit No parity bit Stop Bit 1 bit Adaptable Connector
27. Envelopes Paper LeftMargin RightMargin Top Margin Bottom Margin Size Minimum Minimum Minimum Minimum 10 3 mm 0 12 28mm 1 10 3 mm 0 12 14 mm 0 54 DL 3 mm 0 12 7mm 0 28 3mm 0 12 14 mm 0 54 C6 3 mm 0 12 3 mm 0 12 3mm 0 12 14 mm 0 54 5x8 3mm 0 12 7mm 0 28 3mm 0 12 14 mm 0 54 gt lt LM Printable Area En Figure 1 4 Printable Area for Envelopes Product Description Specifications 18 EPSON Stylus Color 900 Revision C 1 2 5 Ink Cartridge Specifications 1 2 5 1 Black Ink Cartridge O Type Exclusive ink cartridge O Color Black O Print Capacity 1200 pages A4 ISO IEC 10561 Letter 2 Pattern at 360 dpi z 2 O Ink life 2 years from indicated production date E O Storage temperature Storage 20 C 40 C within a month at 40 C Le Packing storage 30 C 40 C within a month at 40 C Transit 30 C 60 C within 120 hours at 60 C and within a month at 40 C O Dimensions 28 9 mm W x 67 4 mm D x 41 8 mm H 27 4 mm Rib area Figure 1 5 Black Ink Cartridge Appearance Product Description Specifications 19 EPSON Stylus Color 900 Revision C 1 2 5 2 Color Ink Cartridge O Type Exclusive ink cartridge O Color Magenta Cyan Yellow EA apa O Print Capacity 530 pages A4 at 360 dpi 5 X duty each color O Ink life 2 years from indicated
28. Excitation Mode and Usage Excitation phase Usage Minimum step 2 2 phase drive Not used 1 720 0 035 mm Fast feed 1 1 2 phase drive Fast feed 2 1 1440 0 018 mm Special fast feed W1 2 phase drive Not used 1 2880 0 009 mm 2W1 2 phase drive Middle speed feed 1 5760 0 004 mm Normal feed 4W1 2 phase drive Micro adjust feed 1 11520 0 004 mm Slow feed Operating Principles Electrical Circuit Operation Principles 70 EPSON Stylus Color 900 Revision C 2 3 5 Pump ASF Motor Driver Circuit Like for the CR motor and the PF motor A3957 IC13 1C14 enables the pump ASF motor to perform 4W1 2 phase excitation on the hardware basis Figure 2 17 shows the pump ASF motor driver circuit block diagram Among 2 drivers IC13 and IC14 drives the Phase A and Phase B respectively E05B59 IC2 42 42 42 42 A3957 IC13 Phase A setting ASFIAO current signal ASFIA1 ASF A 16 patterns ASFIA2 Ase A ASFIA3 Phase A specified ASFPHAA i ASF B Phase B setting ASFIBO current signal ASFIB1 ASFIB2 16 patterns ASFIB3 Phase B specified ASFPHAB signal M62383 IC17 Figure 2 17 Pump ASF Motor Driver Circuit Block Diagram Operating Principles Electrical Circuit Operation Principles 71 EPSON Stylus Color 900 Revision C Table 2 18 shows the excitation modes used for the pump ASF motor and their usage Table 2 18 Pump ASF Motor Excitation Mode and Usage Minimum step Excitation
29. Ink Jet Note Card A6 with envelopes S041 147 LocalTalk Interface Card C82312 EPSON Ink Jet Greeting Cards 5 x 8 with envelops S041148 C82362 C82363 Type B Ethernet Interface Card 082364 EPSON Ink Jet Greeting Cards 8 x 10 with envelops S041149 Type B Bi directional Parallel Interface Card C82345 EPSON Photo Quality Glossy Film A4 S041071 Parallel Interface Cable shielded from D SUB 25 pin 22200 EPSON Photo Quality Glossy Film Letter S041172 computer to 36 pin Amphenol 57 Series printer EPSON Photo Quality Glossy Film A6 S041107 Serial Interface Cable from D SUB 25 pin computer C83603 C83604 EPSON Ink Jet Transparencies A4 S041063 to D SUB 25 pin printer n Ena D SUB 9 pin En EPSON Ink Jet Transparencies Letter S041064 erial Interface Cable from D pin computer to D SUB 25 pin printer C83605 C83606 EPSON Photo Paper A4 S041140 USB Interface Cable shielded from Series A 4 pin EPSON Photo Paper Letter S041141 computer to Series B 4 pin printer This cable is C83623 EPSON Photo Paper 4 x 6 S041134 not supplied in all locations EPSON Photo Paper Cards A4 S041177 EPSON Photo Stickers 16 A6 S041144 Table 1 5 Ink Cartridge Available for Stylus Color 900 EPSON Photo Stickers 4 A6 S041176 Items Codes EPSON Panoramic Photo Paper 210 x 594 mm S041145 Black Ink Cartridge T003 EPSON Iron On Cool Peel Transfer Paper A4 8041154 Color Ink Cartridge T005 EPSON Iron On Cool Peel
30. Italic Italy Italic spain 1 PC 437 PC 850 PC 860 PC 863 PC865 PC 861 BRASCII Abicomp Roman 8 ISO Latin 1 PC 858 ISO 8859 15 Character tables In addition to the Standard version lt NLSP version gt PC437 Greek PC 853 PC 855 PC852 PC 857 PC 866 PC869 MAZOWIA Code MJK ISO 8859 7 ISO Latin 1T Bulgaria PC 774 Estonia ISO 8859 2 PC 866 LAT PC 866 UKR PC APTEC PC 708 PC 720 PC AR864 PC 437 Control Panel Operation Underlined values are the defaults for the EEPROM reset 33 EPSON Stylus Color 900 Revision C O Printhead alignment mode 1 4 2 2 Special Setting Mode Alignment method is as described below While turning the printer on pressing the both Load Eject and Cleaning buttons generates the Special setting mode While the Paper Out LED 1 While holding down both Load Eject and Cleaning Black buttons is blinking activate each function by pressing the specified button s in turn the printer on the method described in Table 1 22 2 Printer prints an instruction sheet that shows how to adjust the Table 1 22 Special Setting Mode 3 Referring to the current alignment press the Cleaning button until While the Paper Out LED is blinking pressing the Load Eject button initializes the EEPROM and resets the timer IC Refer to EEPROM Address Map in Appendix the LED indicate the appropriate test number Load Eject 4 Press the Load Eject button The printer prints the test pattern While the Paper Out LED is blinking
31. Photo Paper umd eat eet t n 16 Photo Stickers icon i aa iiei 16 Printable Arico plas 17 Ink Cartridge Specifications ooooooccccnnnnncccnnnnocncncnononnnononanannn nc nnnancnnnnnnnnn 19 Black Ink Cartridge aenea a aaa i Aa AATA 19 Color Ink Cartridge ssciraianes in aii a aA a 20 Electrical Specifications oooonnncccccnnnncccccnnncocnnncnonannnnnnnnnannn aa eea ie 21 Environmental Condition ooocoonnoccccnconoccccnonanancnncnano coca nonnnn cnn nc nana nnn rra 21 Reliability ica taa 22 Safety Approvals coccion i 22 Acoustic Noise seacor ci rial ld 22 CE Marking 220 240 V Version concccccninnnccccnnnconcccnnnonancnnnn nano nnnnnannnnnn 22 Physical Specifications dorisini aatar Ra aaea aa Kenaa TASA 22 Interfaces ii 23 Parallel Interface Forward Channel eecceeeeesseeceeeeeeeeeeeeeenaeeeeeeeenaes 23 Parallel Interface Reverse Channel cncccnncocccccconoccninonanannnnonanancnnnonnano 26 Mac Serial Interface eirese ea E E A E E O a a e R 28 USB Menace ia da 29 Printer Language and Emulation ccccessceeeeeeneeeeeeeeneeeeeeenaeeeeeneenaes 29 Prevention Hosts from Data Transfer time out s 29 Auto Interface Selection o0 eee eeccceeeesecceeeeeeeeceeeeeeeeeeeeeensneeeeeesnneaeeeeeneeeees 29 IEEE 1284 4 Protocol vico aii ia 30 Control Panel Operation 2000 00 eee cece ee eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeseneeees 31 Indicators LEDS etarra aa 31 Panel FUNCIONS errar ita tdt its 32 Printer Setting Mode
32. SOURCE ICs OR OTHER NONAPPROVED COMPONENTS MAY DAMAGE THE PRODUCT AND VOID ANY APPLICABLE EPSON WARRANTY PREFACE This manual describes basic functions theory of electrical and mechanical operations maintenance and repair procedures of Stylus Color 900 The instructions and procedures included herein are intended for the experienced repair technicians and attention should be given to the precautions on the preceding page The chapters are organized as follows CHAPTER 1 PRODUCT DESCRIPTIONS Provides a general overview and specifications of the product CHAPTER 2 OPERATING PRINCIPLES Describes the theory of electrical and mechanical operations of the product CHAPTER 3 TROUBLESHOOTING Provides the step by step procedures for troubleshooting CHAPTER 4 DISASSEMBLY AND ASSEMBLY Describes the step by step procedures for disassembling and assembling the product CHAPTER 5 ADJUSTMENTS Provides Epson approved methods for adjustment CHAPTER 6 MAINTENANCE Provides preventive maintenance procedures and the lists of Epson approved lubricants and adhesives required for servicing the product APPENDIX Provides the following additional information for reference e Connector pin assignments e Electric circuit boards components layout e Exploded diagram e Electrical circuit boards schematics Revision Status Revision EA DE Description A January 06 1999 First Release The following items have been revised lt Chapter 4
33. Step Check point Actions 1 Is no paper Set a cleaning sheet in the ASF up side down Then 4 Is The PE sensor Measure the voltage at the yellow 3 pin connector loaded holding the top edge press the Load Eject button and defective on the relay board by activating the actuator the micro pearl on the paper load roller a semicircular manually to check that the voltage is correct as roller surface is removed To remove severe smear follows staple a cloth moistened with alcohol to a post card and The actuator is activated 2 4 V or more clean the roller in the same manner The actuator is released 0 7 V or less O Use a post card Non adhesive Area for the base sheet CL Sheet Pin 3 PE Adhesive Area Staplers This Side down Cloth moistened with alcohol 2 Is the connector Connect the connector yellow 3 pin for the PE sensor for the PE sensor disconnected Bottom view of the printer mechanism 5 Is the ASF damaged Hand rotate the shaft in the ASF in the paper feed direction and check if the hopper hops out every time you rotate the shaft Connector for the NOTE Even though the ASF sensor is in the PE sensor Tension spring proper condition for detecting the HP sensor If the hopper is not operating at the correct timing for paper feeding paper is 3 e Is the PE Using your hand try activating the actuator in the not loaded Therefore if the ASF sensor is sensor same condition as it is detecting incoming paper Then working without this co
34. Stylus Color 900 Revision C 1 3 2 Parallel Interface Reverse Channel When IEEE1284 4 is disabled ee f 3 00H 5DH O Transmission mode IEEE 1284 nibble mode MFG EPSON O Adaptable connector See the forward channel CMD ESCPL2 PRPXL BDC As 30 Dest oe MDL Stylus SP COLOR SP 900 O Synchronization Refer to the IEEE 1284 specification CLS PRINTER O Handshaking Refer to the IEEE 1284 specification DES EPSON SP Stylus SP COLOR SP 900 O Data trans timing Refer to the IEEE 1284 specification NOTES O Signal level IEEE 1284 level 1 device 1 OOH denotes a hexadecimal value of zero See forward channel 2 MDL value and DES value depend on the EEPROM setting 3 CMD value depends on the IEEE 1284 4 setting O Extensibility request The printer responds affirmatively when the extensibility request See Table 1 13 which shows pin assignment for reverse channel values are 00H or 04H as follows 00H Request Nibble Mode Reverse Channel Transfer 04H Request device ID using Nibble Mode Rev Channel Transfer O Device ID The printer sends following device ID string upon request When IEEE1284 4 is enabled OOH 60H MFG EPSON CMD ESCPL2 PRPXL BDC D4 MDL Stylus SP COLOR SP 900 CLS PRINTER DES EPSON SP Stylus SP COLOR SP 900 Product Description Interface 26 EPSON Stylus Color 900 Revision C Table 1 13 Pin Assignment For Reverse Channel Signal Name ic In Out Functional
35. The printer does not stop printing but continues to print by lowering the drive frequency For instance the printer normally prints with the head drive frequency of 14 4 K Hz to perform 1440 dpi print horizontal at 200 cps CR speed In the error condition however the printer can lower the head drive frequency to 7 2 K Hz by reducing CR speed to 100 cpi Note the printer actually performs printing at 1 3 duty 1 pass of a normal speed Error 2 The printer stops printing In this condition the temperature at the junction of the power transistor for trapezoidal waveform production and the trapezoid waveform production IC pre driver has risen to the limit which means the thermistors have detected over 60 C at both t1 and t2 and the printer generates a fatal error after stopping printing Operating Principles completely Therefore this printer specifically shows a fatal error on the control panel when detecting abnormal temperatures in addition to the following 2 common conditions 1 Failure in CR home position detection This failure can be caused by one of the following 4 reasons CRHP sensor itself is defective There is a deficiency in the circuit Incorrect PG adjustment CR motor is defective 2 Failure in ASF home position detection This failure can be caused by one of the following reasons ASF sensor itself is defective There is a deficiency in the circuit ASF is damaged Pump ASF motor is defect
36. Transfer Paper Letter S041153 S041155 Product Description Specifications 14 EPSON Stylus Color 900 Revision C 1 2 3 Paper Specifications This section describes paper specifications including paper handling and printable area O Paper Handling Do not feed paper in reverse more than 9 5 mm 0 38 1 2 3 1 Cut Sheet O Size A4 Width 210 mm 8 3 x Length 297 mm 11 7 A5 Width 148 mm 5 8 x Length 210 mm 8 3 Letter Width 216 mm 8 5 x Length 279 mm 11 0 B5 Width 182 mm 7 2 x Length 257 mm 10 1 Legal Width 216 mm 8 5 x Length 356 mm 14 0 Half Letter Width 139 7 mm 5 5 x Length 215 9 mm 8 5 Executive Width 184 2 mm 7 25 x Length 266 7mm 10 5 O Thickness 0 08 mm 0 003 0 11 mm 0 004 O Weight 64g m 171b 90g m 24Ib O Paper Types Bond paper Plain paper EPSON special media 1 2 3 2 Transparency Glossy Paper O Size A4 Width 210 mm 8 3 x Length 297 mm 11 7 Letter Width 216 mm 8 5 x Length 279 mm 11 0 A6 Width 105 mm 4 1 x Length 148 mm 5 8 O Thickness 0 075 mm 0 003 0 085 mm 0 0033 O Paper Types EPSON special media NOTE Print on transparency at normal temperatures only Product Description 1 2 3 3 Envelope O Thickness 0 08 mm 0 003 0 11 mm 0 004 O Size No 10 Width 241 mm 9 1 2 x Length 104 8 mm 4 1 8 DL
37. Troubleshooting Overview 98 EPSON Stylus Color 900 Revision C Among the steps if you do not perform Step 1 to Step 4 in the correct 6 order especially Ink Cartridge Out error Ink End error may occur whenever you replace the printhead The background of this problem is as follows 1 Since the printhead equipped with this printer is composed of 480 nozzles and driven by 32 4 KHz the temperature inside the printhead rises more easily than any other printer Therefore the 7A temperatures inside the printhead and on the printhead board must be intensely monitored to avoid damaging the printhead 2 Rise in the internal temperature of the printhead can cause a fatal damage to the printhead itself Heat inside the printhead is normally removed as the ink flows inside the printhead 3 If any of the following conditions occurs the printhead fails to eject ink properly even though the print data is input E The printhead surface is left away from the home position for a long period of time E The same ink cartridge is remove and installed repeatedly E The table with the printer on it is moved up and down vertically intensely 4 If the ink does not flow properly the PZT gradually heats up and is eventually hot enough to evaporate the ink inside the cavity a tank which stores ink 5 To prevent the printhead from heating up the 5 channel abnormal temperature detection circuit is included in the nozzle selector directly a
38. When inputting connects a current from the Phase B to the ground via the coil 16 GND Ground 3 CR A O Phase A Input Output data 17 LAT O Latch signal to inform of a dot selection signal When inputting connects a current from the transfer completion Phase A to the ground via the coil 18 GND Ground 4 CR B I O Phase B Input Output data 19 INV O Inversion signal of the print data When inputting connects a current from the High without data Phase B to the ground via the coil 20 COB Black ink cartridge In Out detection signal 21 COC I Color ink cartridge In Out detection signal Appendix Connector Summary 174 EPSON Stylus Color 900 Revision c Table 7 8 Connector Pin Assignment CN12 Table 7 11 Connector Pin Assignment CN15 Signal Name Function Pin Signal Name I O Function 1 ASF A VO Phase A Input Output data 1 GND Ground When inputting connects a current from the siz Phase A to the ground via the coil oe Ground W 1 D h SW condition 2 ASF B VO Phase B Input Output data A ae etects ine power peur When inputting connects a current from the 4 PSC O Charging voltage to the electrolysis condenser Phase B to the ground via the coil for the delay control 3 ASF A 1 O Phase A Input Output data 5 SW1 Detects the Load Eject SW condition When inputting
39. adjusting lever inward to remove it PG Adjust Lever gt Spring d LS EN Hook PA k Figure 4 40 PG Adjust Lever Removal 7 Remove the E ring fixing the carriage guide shaft and the parallelism adjustment bushing right and then the washer and the spring washer to release the parallelism adjustment bushing right Note the concave side of the spring washer faces to the printer mechanism side Parallelism Adjustment Bushing right Screw 8 Remove the screw fixing the parallelism adjustment bushing right E ring Figure 4 41 Parallelism Adjustment Bushing Removal Disassembly Procedures 124 EPSON Stylus Color 900 Revision C 9 Turn the parallelism adjustment bushing to the left to align the 4 2 7 11 Pump Unit Removal bushing with the cutout in the left frame then pull the parallelism adjustment forward 1 Remove the printer mechanism See Section 4 2 2 2 Remove three screws securing the pump unit and remove the pump 10 Shift the whole carriage guide shaft to the right to release the joint at unit along with the frame the left end then remove the carriage guide shaft and carriage unit together Screws securing the Pump Unit Pump Unit Guide Shaft perform any necessary adjustments See Table 4 1 When removing the carriage guide shaft pay atttention to the oil pad as it will come off the Carriage When lubricating the carriage guide shaft be sure to
40. and 8 among two bushings securing the PF roller by the both ends turn the rest by the rear right of the printer mechanism and remove the the left one on the 80th column side upward to release the PF top frame roller then shift the whole shaft to the right and remove the PF roller The paper guide lower is remove together ig Never touch the PF roller with your bare hands Screws securing the Top Frame Bushing left PF Roller Top Frame UNS Figure 4 49 Top Frame Removal 1 i 0 Figure 4 51 PF Roller Removal 0 Screw securing the Top Frame at the back Figure 4 50 Top Frame Removal 2 Disassembly and Assembly Disassembly Procedures 129 EPSON Stylus Color 900 5 1 Overview a This chapter contains all adjustments procedures for Stylus Color 900 fir 5 1 1 Conditions for Each Adjustment a This section includes each adjustment which is required after repairing or replacing specific parts used in the Stylus Color 900 Some of the adjustments have the specified order to perform depending on the contents of the adjustment Therefore observe the points shown under the heading CAUTION in the right column well and perform the adjustments properly in the correct order referring to Table 5 1 Table n 5 3 E E Adjustment Overview Revision C When adjusting the printer be sure to refer to Table 5 1 to check for all the necessary adjus
41. and chassis Area 220 240V version 20 o O Rated voltage AC220V 240V O Input voltage range AC198 264V 10 27 35 C O Rated frequency range 50 60Hz 50 80 95 F O Input frequency range 49 5 60 5Hz Figure 1 7 Temperature Humidity of Range pao rey Pe MARIU Oo O Resistance to shock Operating 1G within 1 ms O Power consumption Approx 18W ISO IEC 10561 Letter pattern Non operating 2G within 2 ms 1 Ehergy Star compliant O Resistance to vibration Operating 0 15G Operating O Insulation Resistance 10M ohms min Non operating 0 50G 1 between AC line and chassis DC500V 1 With a shipment container O Dielectric strength AC1500 V rms 2 Without condensation 1 minute between AC line and chassis Product Description Specifications 21 EPSON Stylus Color 900 Revision C 1 2 8 Reliability 1 2 11 CE Marking 220 240 V version O Total print volume 75 000 pages A4 Letter O Low Voltage Directive 73 23 EEC EN60950 O Printhead life 4000 million dots nozzle O EMC Directive 89 336 EEC EN55022 Class B EN61000 3 2 1 2 9 Safety Approvals ENO T00e 8 y PP EN50082 1 120V version IEC801 2 IEC801 3 O Safety standard UL1950 IEC801 4 CSA22 2 No 950 O EMI FCC part 15 subpart B class B 1 2 12 Physical Specifications CSA C108 8 class B O Weight 8 4 Kg 220 240V version O Dimensions 647 mm W x 296 mm D x 325 mm H O Safety standard EN 60950 VDE O EMI EN55022 CISPR Pub 22 class B AS NZS 3548 class
42. as a result The solution in this case is also replacing the ink cartridge with a new one Furthermore If an ink cartridge is removed from the printer air comes in and bubbles inside the cartridge Unlike a new cartridge the ink inside the removed cartrides is not deaerated so the bubbles inside can not be absorbed into the ink due to the ink s saturated condition For this reason Operating Principles Electrical Circuit Operation Principles 64 EPSON Stylus Color 900 Revision C Mechanism status detection part EO5B60 IC3 Figure 2 14 Sensor Circuit Block Diagram Mechanism Status Detection Part Operating Principles Electrical Circuit Operation Principles 65 EPSON Stylus Color 900 Revision C O Operating Principles Encoder This sensor increases accuracy of ink ejection timing Irregular movement of the carriage usually caused by a paper jam can be also detected based on the change in input signals of this sensor Carriage movement is monitored by running the encoder belt with lines printed on it with increments of 180 dpi between the photo sensor attached to the carriage Also if the printer receiveds a large impact during printing the input signal cat not be properly read and in some cases print quality decreases with a dot missing problem This is because this printer forms one dot by producing trapezoidal head driving waveforms based on the cycle determined by the signals sent from the encoder Ink cartridge
43. be Selected White lines appear symmetrically 8 After performing the procedures in Step 7 if no problem was found you do not need to continue to the next step If the head angular needs to be adjusted continue to the next step Figure 5 17 OK Patterns 9 The rest of the procedure includes the steps to follow when the NG Pattern output pattern is NG By this time the screen has automatically Pattern 1 Pattern2 Pattern3 Pattern4 Pattern 5 returned to the Head Angular Adjustment Initial screen Figure He AA AA AA 5 14 where you are to select Head Angular Adjustment White lines appear on the same position Figure 5 18 NG Patterns Adjustment Adjustments 142 EPSON Stylus Color 900 Revision C 10 The following screen appears 12 Select Yes in the screen Figure 5 20 aaa NOTE If no printing data command is input to this printer for 3 minutes while power is on the current which magnetizes the Pump ASF motor completely drops The drive sent from this motor is also used to lock release the carriage lock lever For this reason if the special command for the adjustment is generated after 3 minutes to move the carriage the printer directly enters the carriage lock lever releasing operation without the rush current control which is done while magnetizing the motor As a result there is a possibility that the carriage collides because of the incompletely released lever and the error occurs Therefore ple
44. connector 2 3 Electrical continuity of the cable Carriage viewed from the back Head surface La for all continuity Connector 2 Connector 1 e Viewing the printer from the back check that all of the six torsion springs securing the paper load sub rollers are properly installed Top Frame Troubleshooting Overview 84 EPSON Stylus Color 900 Revision C 3 1 1 3 Remedies for No I C and Ink Out Errors Table 3 9 Remedies for No I C and Ink Out Errors tag 3 a St Check Point Action This section includes the check points and corresponding actions which eP ll l l dia are necessary when the black ink or color ink LED comes on or blinks 1 Does the counter The ink consumption counter separately set for black at power on despite the ink cartridge has been replaced with a new one value nis ICE le AUDA Or g oip DENMA ae Oring t i waa p p g p actual remaining ink used to form one dot This counter is reset the value Be sure to follow the steps in the order described in the tables level returns to zero when the I C replacement sequence is performed If the counter is reset for any other NOTE If the finding for the question is Yes take the action described in purposes the following adversities will occur the right column If No proceed to the next step 1 Eno
45. driven by the CR motor The printer however is designed to operate the actuators only when both black and color ink cartridges are installed See Table 2 5 and Table 2 6 for the ink cartridge sensor specifications and ink cartridge sensor switch mode respectively Operating Principles Table 2 5 Ink Cartridge Sensor Specifications No Item Specifications 1 Detection type Using a micro switch 5 VDC 5 Rated voltage Rated current 10 mA AJ Oj PY Contact resistance 50 MQ Table 2 6 Ink Cartridge Sensor Switch Mode Cartridge Sensor Status Sensor Output Absent Open 2 4 VDC or more Present Closed 0 7 VDC or more If the ink cartridge sensor is defective or in an endetectable condition the printer shows No Ink Cartridge Error immediately after the printer is turned on Printer Mechanism Operating Principles 47 EPSON Stylus Color 900 2 2 2 Printing Mechanism The printing mechanism of the printer is all included inside the printhead The printing method is EPSON exclusive MACH system which is used in other EPSON ink jet printers but the printhead is not compatible with any other printer See Figure 2 2 for the printing mechanism block diagram Nozzle Selector 42 Driver Temperature detection circuit Pulse form command Temperature data Nozzle Plate Figure 2 2 Printing Mechanism Block Diagram The printing mechanism performs p
46. driver circuit block diagram Table 2 19 shows how the signals output from the ASIC and corresponding fan conditions E05B59 IC2 FAN Figure 2 19 Cooling Fan Driver Circuit Block Diagram Table 2 19 Cooling Fan Control by the ASIC IC2 Low 0 VDC Off Figure 2 20 Main Routine of the Cooling Fan Drive Operating Principles Electrical Circuit Operation Principles 74 EPSON Stylus Color 900 Revision C Whether or not the cooling fan is driven depends on the electrical signals sent from the 2 thermistors t1 and t2 in the figure The t1 represents the temperature detected by the thermistor attached to the heat sink on the C265 main board with a screw while the t2 represents the one between the printhead pre driver ICs IC15 and IC16 on the C265 main board Table 2 20 shows the thermistor condition and corresponding fan operation Table 2 20 Conditions for Driving the Cooling Fan Cooling fan Cooling fan Thermistor condition Stops operating Operating t1 and t2 have detected ti gt 40 C or t2 gt 50 C t1 2 36 C or t2 gt 42 C temperatures Even while the printer is in idle status the thermistors continue to detect temperatures every 2 seconds for the cooling fan operation However 2 error status conditions can be detected in the main routine since air may not cool down if the fan is defective or the ventilation grill is clogged Error 1
47. find the correct direction with which you can push the release hopper lever without force When installing the shaft release hopper lever pay 4 Shift the whole LD roller shaft to the left about 2 cm Then using tweezers remove the detection wheel by releasing the tab attaching the detection wheel to the left end of the LD roller shaft NS Fixing Tab p Detection Wheel LD Roller Shaft Figure 4 24 Detection Wheel Removal 5 Release the peg fixing the hopper assembly to the ASF frame by the top left Then separate the hopper assembly and the ASF frame Hopper Assembly ASF Frame Figure 4 25 Separating the Hopper Assembly from the ASF Frame Disassembly Procedures 117 EPSON Stylus Color 900 6 After removing the hopper assembly shift the LD roller shaft to the left end to release the right end then remove the LD roller shaft along with the right and left paper loading assemblies 7 Shift the LD roller shaft to the left to pull it out from the paper loading rollers right and left 8 Release one hook securing the LD roller cover in the paper loading assembly and remove the LD roller cover Paper Loading Assembly LD Roller Cover LD Roller Cover Figure 4 26 LD Roller Cover Removal Disassembly and Assembly Revision C 9 Release four hooks securing the LD roller assembly to the frame in the paper loading assembly and remove the LD roller as
48. follow the correct order by referring to Chapter 6 Gig m After removing replacing the Carriage Unit Carraige Screws securing the Pump Unit Figure 4 42 Pump Unit Removal Disassembly and Assembly Disassembly Procedures 125 EPSON Stylus Color 900 Revision C 4 2 7 12 Paper Eject Frame Removal 4 2 7 13 Paper Eject Roller Removal 1 Remove the printer mechanism See Section 4 2 2 1 Remove the paper eject frame See Section 4 2 7 12 2 Remove the pump unit See Section 4 2 7 11 2 Turning the bushings fixing the paper roller by the both ends upwards and remove the paper eject roller 3 Remove the carriage unit See Section 4 2 7 10 4 Remove hooks securing 2 FFC holders one on the paper eject Paper Elect Roller Bushing frame and the other on the right frame and remove the FFC parel holders A ES w TALES BO ae ms SS AN S D e A KW A Q D Screws securing the Paper Eject Frame C USO IS ates ee o Figure 4 44 Paper Eject Roller Removal Paper Eject Frame FFC Holders Figure 4 43 Paper Eject Frame Removal 5 Remove two screws securing the paper eject frame and remove the paper eject frame Disassembly and Assembly Disassembly Procedures 126 EPSON Stylus Color 900 Revision C 4 2 7 14 Platen Removal 1 Remove the paper eject roller See Section 4 2 7 13 2 Lift up the front edge of the platen and remove the plate Figure 4 45 Platen Removal Disassembly and Assembly D
49. following screen appears e el sa Al Select an adjustment value with the Up Down arrow keys Figure 5 36 Adjustment Value Input Screen Variable 1 Adjustment 15 As the Up Down Arrow key is pressed the value shown in blue in the figure increases decreases So you can select the desirable value NOTE Regardless of the value you have input the center value selected value in the next Bi D pattern sample will be 0 The value in the range from 34 to 34 can be input 16 When the desirable value is selected press the Enter key The following screen appears As the variable 1 Dot data has been written in EEPROM Figure 5 37 Screen after the Adjustment Value has been Written 17 Press the ESC key to return to the Bi D Adjustment mode selection screen Figure 5 35 18 Select Variable 2 Dot If the center value for the Variable 2 Dot pattern has the completely aligned lines you can select Normal Dot instead 19 The following screen appears Adjustments 150 EPSON Stylus Color 900 Revision C 22 Press the ESC key to return to the Bi D Adjustment mode selection screen Figure 5 35 23 Select Normal Dot If the center value for the Normal Dot pattern ec thea not atte stitial Downarrow Keys has the completely aligned lines you can finish this adjustment 24 The following screen appears e el se a Select an adjustment value with the U
50. is not selected IEEE1284 4 is enabled as initial state Data sent before the magic string 1284 4 synchronous commands is discarded O OFF IEEE1484 4 is disabled and IEEE1484 4 synchronous commands are ignored Compatible interface is the initial state Product Description Interface 30 EPSON Stylus Color 900 Revision C 1 4 Control Panel Operation The control panel of the EPSON Stylus Color 900 is composed of the 2 non lock type push buttons 1 lock type push button and 4 LEDs as shown below Paper Out LED p LED Ink Out ower Black LED Als e 4 o Ink Out Pa 7 O Color LED Cleaning Button Power Button Load Eject Button Figure 1 10 Control Panel 1 4 1 Indicators LEDs 1 Power Lights when the operate switch is ON and AC power is supplied Paper out Lights during the paper out condition and blinks during the paper jam condition Ink Out Black Lights during no Black ink condition and blinks during the Black ink low condition Ink Out Color Lights during no Color ink condition and blinks during the Color ink low condition Product Description Control Panel Operation 31 EPSON Stylus Color 900 Revision C 1 4 2 Panel Functions 1 4 2 1 Printer Setting Mode O Panel function Refer to Table 1 17 While turning the printer on press the Cleaning button and the Paper Out LED starts blinking This operation
51. must be followed by pressing Pople te PANES FUNCHONS the specified button while the Paper Out LED is still blinking to enter the Button Function Default setting mode or Printhead alignment mode as described in e Loads or ejects paper Table 1 19 Load Eject When the carriage is in the I C replacement position within 2 seconds 1 pressing this button returns the carriage to the capping Table 1 19 Printer Setting Mode position B F i i Load Eject e Starts the I C replacement sequence 2 en Sne On Pato for 2 seconds 1 e Move the carriage to the I C replacement position While the Paper Out LED is blinking pressing Slate orinth addieanin m Cleaning or no button the Cleaning or no button generates the UR OR eee ee eee Nee Default setting mode 1 Cleaning Starts the I C replacement sequence when the printer for 2 seconds 1 is in one of the following conditions Load Eject While the Paper Out LED is blinking pressing Ink Low Ink Out No Ink Cartridge 2 P miina d the Load Eject button generates the Printhead i SN i Press it within 10 seconds alignment mode Cleaning en the carriage is in the I C replacement position within 2 seconds 1 returns the carriage to the capping position Load Eject Changes the default for the parallel I F Hold it down for 10 seconds communication protocol 2 1 3 seconds is specified in the Users Guide 2 This operation is not effect
52. of time to wait until the whole process from the writing to the EEPROM to reading data is completed 8 In 5 or 6 seconds the following screen appears lt gt lt gt lt gt Service Program boot process lt gt lt gt lt gt 10 Select Perform Boot this program 11 The main adjustment screen shown in Figure 5 4 appears 5 E Adjust t 1 Figure 5 3 Screen after Destination Selection Aumento Maintenance Print A4 Pattern 9 Option in the screen Figure 5 3 means the following 9 1 Perform Select this to directly proceed to the main adjustment screen 9 2 No Select this to return to the initial screen Figure 5 1 which lets you correct the wrong selection made in Step 5 or Step 6 9 3 Get Select this to confirm the selection model name Figure 5 4 Main Adjustment Menu Screen destination made in Step 5 orStep 6 See the note in the right column for details Adjustment Adjustments 135 EPSON Stylus Color 900 Revision C 5 2 2 Market Destination Check 5 The following screen appears This section describes how to confirm the destination selected in Section 5 2 1 Step 6 Unlike reading the model name Section 5 2 1 Step 9 3 this routine only includes reading data from the printer s RAM Therefore the marked destination can be checked immediately e SJF Al 1 Referring to Section 5 2 1 perform the preliminary operation 2 Select Adjustment 1 in the main adju
53. pressing 5 Referring to the test patterns on the new printout select the most Cleaning the Cleaning button for 10 seconds resets the i Hold it down for 10 seconds waste ink counter in the EEPROM Refer to closely aligned pattern by pressing the Load Eject button EEPROM Adare lt Mann bendia 6 Press the Cleaning button 7 Repeat the steps from 3 to 6 until all test patterns are properly aligned 8 Turn the printer off Product Description Control Panel Operation 34 EPSON Stylus Color 900 Revision C 1 4 3 Printer Condition and Panel Status Table 1 23 shows printer condition and panel status Since the table shows various error status and also indicates printer status it enables you to find appropriate repair ways Table 1 23 Printer Condition and Panel Status Indicators Printer Status Ink Out Ink Out Paper Out Priority JET CMY Power on condition On 9 Ink Sequence mode Blink 6 1 C replacement mode Blink 5 Data processing Blink 8 Paper Out On 4 Paper Jam Off Off Blink 3 No I C Ink Out Black On 7 Ink level low Black Blink y No I C Ink Out CMY On 7 Ink level low CMY Blink 7 Elia aa ana ON for 1 second only Maintenance Request Blink Blink Blink Blink 2 Fatal Error Blink On On Blink 1 Product Descript
54. procedures are included in this chapter Precautions for any disassembly or assembly procedure are described under the heading CHECK POINT Any adjustments required after disassembling the units are described under the heading REQUIRED ADJUSTMENT 4 1 1 Precautions for Disassembling the Printer See the precautions given under the heading WARNING and CAUTION in the right column and the following page respectively when disassembling or assembling EPSON Stylus Color 900 Disassembly and Assembly Overview Disconnect the power cable before disassembling or assembling the printer Wear protective goggles to protect your eyes from ink If ink gets in your eye flush the eye with fresh water and see a doctor immediately If ink comes into contact with your skin wash it off with soap and water If irritation occurs contact a physician A lithium battery is installed on the main board of this printer Be sure to observe the following instructions when serving the battery E Keep the battery away from any metal or other batteries so that electrodes of the opposite polarity do not come in contact with each other Do not heat the battery or put it near fire E Do not solder on any part of the battery Doing so may result in leakage of electrolyte from the battery burning or explosion The leakage may affect other devices close to the battery E Do not charge the battery An explosive may be generated in
55. s contacting the paper surface by the corner A and the hopper s being pushed out must be coincided The ASF sensor is used to determine the condition whether the phase is correct or not The transmission system of the ASF sensor detects the condition by catching the position of the cam attached onto the same shaft as the semicircular roller is See Table 2 8 and Table 2 9 for the ASF sensor specifications and its switch mode respectively Pinch roller Semicircular Cam Hopper roller Return lever Separation pad Ready status Active Status Figure 2 4 ASF Paper Load Mechanism Operating Principles Printer Mechanism Operating Principles Table 2 8 ASF Sensor Specifications No Item Specifications Photoelectric transfer system transmission 1 Type type 2 Collector voltage 30 VDC or less 3 Coil resistance 5 VDC 5 Table 2 9 ASF Sensor Switch Mode ASF Position Sensor Status Sensor Output Home position Open 0 7 VDC or less Off the home Close 2 4 VDC or more position Note that torque from the pump ASF motor is transmitted to the pump unit depending on the pump ASF mechanism condition The rotational directions and corresponding functions are as shown in Table 2 10 Table 2 10 ASF Pump Motor Functions Functions for the ink Functions for ASF system Direction Normal rotation Reverse rotation of the Connection to the pump CW paper loa
56. sensor If the printhead drives without any ink cartridge installed false firing it damages the printhead unit Also compared with other printers this printer uses the largest number of PZT and accordingly releases more heat For this reason the ink itself inside the cartridge serves to lower the temperature inside the cartridge and black and color ink cartridges can be separately detected to avoid false firing Detection process An ink cartridge is detected when the ink cartridge being installed activates the actuators which then pushes the micro switch CR home position sensor When the printer is turned on the CRHP sensor confirms the CR is in the home position during the home position seeking sequence Then the printer can determine the CR control afterwards The printing column position is also confirmed based on the signals from the sensor Detection process The carriage is detected when the flag interrupts the light beam in the photo sensor which is located on the right end of the printer mechanism O PE Paper End sensor The PE sensor detects the following conditions E Whether or not paper is set at power on Whether or not paper is properly fed from the ASF with the paper feed command E Whether or not the printer properly ejects a page of printed paper after rotating the PF Paper Feed motor with the predefined distance Detection method A photo sensor is used to detect the actuator s motion the ac
57. sequence Perform this operation after installing both new ink cartridges Initial Ink Charge gt Perform the initial ink charge Total quantity of black ink absorption 4 3 ml Total quantity of color ink absorption 6 3 ml Figure 5 44 Screen after Ink Charge Flag Reset is Selected Adjustment Adjustments 154 EPSON Stylus Color 900 Revision C 5 2 8 Indication of the Counter Value for the Waste Ink Pad This section describes how to indicate and clear the values for the 5 The following screen appears waste ink pad counters protection counters which shows the total ink amount absorbed in the waste ink pads In case of Stylus Color 900 you can confirm and reset the counter values through the printer s control panel operation only This manual however only describes the procedure using the service program 1 Referring to Section 5 2 1 perform the preliminary operation 2 Select Indication of the counter value for the waste ink pad from It takes about 88 seconds the main maintenance menu 3 The following screen appears Figure 5 47 Protection Counter Indication Screen 6 The maximum values for the left and right pads are 25 800 and 23 300 points respectively If any of the current values is close to the limit the protection counter values should be reset to 0 Please be aware that the replacement timing shown in Figure 5 47 only
58. shield plate 1 Remove the printer mechanism See Section 4 2 2 Screws securing the Shield Plate 2 Disconnect three connectors CN1 CN2 and CN3 from the C265 PSB PSE board 3 Remove three screws including one for grounding securing the C265 PSB PSE board to the lower case then remove the C265 PSB PSE board unit Screws securing the C265 PSB PSE Board Figure 4 11 Removing the Shield Plate 5 Remove four screws securing the C265 PSB PSE board to the bottom frame and remove the C265 PSB PSE board Screws securing the CN1 CN3 Figure 4 10 Removing the Connectors Figure 4 12 C265 PSB PSE Board Removal Disassembly and Assembly Disassembly Procedures 111 Revision C EPSON Stylus Color 900 4 2 7 Printer Mechanism Disassembly 4 2 7 1 Printhead Removal When removing the printhead make sure the carriage unit is at the left end of the printer mechanism If you try to remove it from any other position excess force will be added and the printhead unit may be damaged as a result 1 Remove the printer mechanism See Section 4 2 2 2 If any ink cartridge is installed in the carriage unit remove it 3 Release the carriage lock at the back of the printer mechanism and move the carriage unit to the left end of the printer mechanism CR Motor CR Lock PE Sensor Connector Pump ASF Motor Figure 4 13 Releasing the CR Lock 4 Release two joints blue in the cartridge clamp
59. the DE subassembly frame along with the pump ASF motor y g Pome 4 Holding the paper hold lever up to the left remove the ASF unit 3 Remove two screws securing the pump ASF motor to the DE Screws securing the ASF Unit subassembly frame and remove the pump ASF motor pp tl Screws securing the DE Subassembly Frame to the Printer Mechanism Screw securing the Solenoid Figure 4 21 ASF Removal When install the ASF be sure to use the correct type of the screws as shown below Screw with a flat head on the right toward the front side of the printer E Screw with a washer on the left toward the front Figure 4 20 Pump ASF Motor and Solenoid Removal side of the printer DE Subassembly Frame Screws securing the Pump ASF Motor Disassembly and Assembly Disassembly Procedures 116 EPSON Stylus Color 900 4 2 7 5 1 ASF Disassembly 1 Remove the ASF See Section 4 2 7 5 2 Remove the left shaft bushing located at the left end of the loading LD roller shaft Bushing Fixing the Shaft on the Left Figure 4 22 Left Bushing Removal 3 Remove the release hopper lever from the LD roller shaft Shaft s Side Face LD Roller Shaft Release Hopper Lever Right Figure 4 23 Release Hopper Lever Removal Disassembly and Assembly Revision C attention to the direction for installing it However the lever does not fit in if the direction is wrong Therefore referring to Figure 4 23
60. the EEPROM is transferred to the D RAM by the ASIC IC3 In the D RAM the ASIC controls various adjustment values total ink consumption and current ink usage condition for each color and the printer prints depending on these values When the printer is turned off the data and adjustment values accumulated and controlled in the D RAM are written back into the specific addresses in the EEPROM under the ASIC s control Information is transmitted between the ASIC IC3 and the EEPROM in the serial data format 5 AT93C56 IC7 EO5A60 1C3 DRAM IC5 Figure 2 22 EEPROM Control Circuit Block Diagram Operating Principles Electrical Circuit Operation Principles 77 EPSON Stylus Color 900 Revision C 3 1 Overview Following sections show detailed information on each step in the flowchart Be sure to perform troubleshooting without neglecting the This chapter describes how to troubleshoot problems It consists of the correct order specified in each section sections shown in the flowchart below When identifying and troubleshooting problems be sure to proceed to the correct section specified in the flowchart Is the printer power on Isolating the faulty part on the power supply board Section 3 1 2 Troubleshooting with LED error indications Section 3 1 1 Isolating the faulty part according to the exhibited phenomenons Section 3 1 3 Figure 3 1 Troubleshooting Flowchart Troubleshooting Overview 79 EPSO
61. the carriage guide shaft well 5 Install another new oil pad to the specified position at the back of the carriage 6 Supply specified amount of O8 0 7 cc to 0 75 cc to the installed oil pad Make sure the printhead has been removed for this operation NOTE For precise oil control use the smallest diameter syringe available Also never use the syringe without a needle on it 165 EPSON Stylus Color 900 Revision C 6 2 1 Lubricating the Carriage Guide Shaft 5 Using the dry cloth completely wipe the inner surfaces of the 2 metallic bushings through which the carriage guide shaft is set This section includes the procedure for lubricating the carriage guide Especially wipe well off black stains if any Also clean the portion shaft Unlike other models the lubrication of the carriage guide shaft is where the pad was attached using the cloth performed under many restrictions Therefore be sure to observe the CAUTION in the previous section and perform lubrication by strictly following the steps specified Oil Pad 1 Remove the printhead Refer to 4 2 7 1 2 Remove the carriage unit Refer to 4 2 7 10 Wipe off black 3 Clean the carriage shaft by wiping the shaft s surface with a dry stains completely cloth Metallic bushings Carriage Guide Shaft Figure 6 3 Locations for Oil Pad and Bushings 6 Get asmallest diameter syringe available The small syringe shown below only contains 2 cc ma
62. the main board from CN16 on the main board Solenoid from CN15 on the main board from the control panel ASF Sensor PE Sensor Figure 4 5 Connector Location 107 EPSON Stylus Color 900 Revision C 4 Remove two screws securing the waste ink drain pad cover to the 4 2 3 C265 Main Board Unit Removal lower case and remove it 1 Remove the printer mechanism See Section 4 2 2 5 Disconnect two printhead control FFCs from the C265 main board 2 Remove four screws securing the rear case to the stay on the C265 6 Remove four large screws securing the printer mechanism to the Main board lower case and remove the printer mechanism Screws securing the Type B I F Cover m After replacing the Waste Ink Pads perform any Ra necessary adjustments See Table 4 1 ES When installing the FFCs remove the frame secured by two screws before connecting the FFCs Otherwise the FFCs will not be connected to the connectors properly and the printheads may be damaged when voltage is applied When mounting the four screws do not fasten them excessively or the tapped areas in the lower will be damaged Screws securing the Rear Case Figure 4 6 C265 Main Board Removal 3 Remove two screws securing the Type B interface cover to the printer and remove the rear case 4 Disconnect two connectors CN5 and CN6 from the C265 Main board and remove the C265 Main board
63. unit After removing replacing the C265 Main Board perform any necessary adjustments See Table 4 1 Disassembly and Assembly Disassembly Procedures 108 EPSON Stylus Color 900 4 2 4 Relay Board and Cooling Fan Removal 1 2 Remove the C265 Main board See Section 4 2 3 Screws securing the Relay Board Remove all connectors from the relay board See Figure 4 5 when connecting them Screws securing the Cooling Fan Unit a Remove two screws securing the relay board to the shield plate on Relay Board the C265 Main board then remove the relay board Remove three screws securing the cooling fan unit to the shield plate on the C265 main board then separate the cooling fan from the C265 Main board Disconnect the connector CN13 white 2 pin from the C265 Main board and remove the cooling fan unit Cooling Fan Unit Figure 4 7 Relay Board and Cooling Fan Removal Disassembly and Assembly Disassembly Procedures Revision C 109 EPSON Stylus Color 900 Revision C 4 2 5 Shield Plate on the C265 Main Board Removal 4 Disconnect the FFC from the connector CN15 on the C265 Main board 1 Remove the C265 Main board See Section 4 2 3 5 Remove two screws securing the shield plate top to the bottom 2 Remove the remaining four connectors from the relay board See frame and remove the shield plate top Figure 4 5 when connecting them 6 Remove the Type B interface guide 3 Remove two screws s
64. 0 envelopes Holds 30 transparency fllms O Built in 3 I F and 1 optional I F card slot Mac serial I F up to approximately 1 8 Mbps Bi directional parallel I F IEEE 1284 level 1 device USB Figure 1 1 Stylus Color 900 Optional Type B level 2 I F card slot O 4 scaleable fonts 5 LQ fonts O 13 character tables Standard version O 37 character tables NLSP version Product Description Features 10 EPSON Stylus Color 900 Revision C 1 2 Specifications O Print direction Bi direction with logic seeking O Print speed and Printable columns 1 2 1 Printing Specifications Table 1 1 O Print method On demand ink jet Print Speed and Printable Columns for Character Mode Character pitch Printable columns LQ speed O Nozzle configuration Monochrome 192 nozzles 96 x 2 staggered z Color 96 nozzles x 3 Cyan Magenta TO GPIPica AD salis Yellow 12 CPI Elite 96 342 CPS See Figure 1 2 for the nozzle configuration 15 CPI 120 428 CPS 17 CPI Pica condensed 137 487 CPS 20 CPI Elite condensed 160 570 CPS Table 1 2 Print Speed and Printable columns for Raster Graphics Mode Horizontal 3 Printable area PNET Ele mele i CRS resolution 180 dpi 8 26 inch 1488 28 5 IPS 360 dpi 8 26 inch 2976 28 5 IPS 720 dpi 8 26 inch 5952 20 IPS O Control code ESC P2 and expanded raster graphics code Row A Black 1 Row C Magenta Row E Yellow EPSON Remote command R
65. 1 CRHP Sensor Removal concccccccnnoccccconoconcccconnoncncnonanoncncnnnnncnncnnnnnnncnnnos 122 PE Sensor Removal oe neca e A A A 122 Encoder Belt Sensor Removal eccceeeeseeeeeeeeeeeeeeeeeeeeeeaeeeeeseaaes 123 Carriage Unit Removal ooonooccccnnnnoccccncnnconcnnnnnnnnnnncnnnn nn nan nnnnn cnn rca 124 Pump Unit Removal secenario nn non n cnn aran 125 Paper Eject Frame Removal cecceeeeeeeeceeeeeeeeeeeeeeeeeeeeeeeseeeeeeees 126 Paper Eject Roller Removal ooonncccccnnnncccccconoconcccnonannnnnnnnanannncnn cnn 126 Platen Removal oooconnccccccnncoocnncnnncnrnnnnnnnnnrnncn nr 127 PF Roller Removal reinis rarita id 128 Adjustment OVOIVIOW soon ala tias ite 131 Conditions for Each Adjustment ooooccccnnnncccnnnnnoccccnnnnccrcccnn nar cccnnnnn nn 131 Adjustments cocoa tc REO 134 Preliminary Operation ooooccccnnncccccconononncccnnncn cnn romano cnn nn nano nc nar nnnnn rra rra 134 Market Destination Check onncccccnnnncccccnnnnoccccnnnnnnnccnnonannn cnn nn nnnnn cnn rra 136 Head Actuator Voltage INput oooooocccccnnoccccconanoncncnnnnancnnnnnnnncncnnnnnnncnnnnnns 137 Head Angular Adjustment 0 0 0 eeeeceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeseeeeeeeeeeeeeeees 141 Bi Directional Adjustment ooocoonoccccccnonoccncconanoncnncnanancnnnnnnnnnncnnnnnanccnninnns 148 Printhead Cleaning Using the Program ooooooccccconcccccccnononcnnnonanannnnnnananos 153 Initial INK Charge ironias aair eea aA 154 Indication of the Counter Value for the Waste
66. 2 Phase CRA B _ PFPHAA 271 PHASE1 jap selection signal PFPHAB 128 16 PHASE2 ENE pennaon PRENSA Tg ANE sonal PFENBB ENABLE2 5 2 VREF2 ze 124 PFCTLO 727 Motor sub _ PECTLA 125 control PECTL2 PFCTLR 126 PFCTLS 423 N C M62383 IC17 Some Figure 2 16 PF Motor Driver Circuit Block Diagram Operating Principles Electrical Circuit Operation Principles 69 EPSON Stylus Color 900 Revision C Unlike the previous EPSON ink jet printers the number pf the phase excitation input ports in the motor drive IC of this printer has increased to 8 The previous micro step system used total of 4 phase excitation input signals for both Phase A and Phase B Stylus COLOR Stylus PRO series and Stylus PRO XL series are exceptional since they transfer 4 bit serial data from ASIC to the motor driver This is because the micro stepping was controlled by the software only On the other hand LB1847 enables 4W1 2 phase excitation using the hardware and is equipped with the necessary number of input ports 8 ports for current setting signals Among 8 input ports 4 are allocated to each phase A and B Therefore 16 types of current setting data can be constantly sent to the driver IC The LB1847 controls the micro stepping system by exciting the corresponding phase based on the combinations of the setting signals sent from the ASIC Table 2 17 shows the excitation modes used for the PF motor and their usage Table 2 17 PF Motor
67. 3 EEPROM Address Map 1 8 Address Table 7 14 EEPROM Address Map 2 8 Explanation Settings QPIT settings Factory settings NE Eveignati n Sia QPIT Factory 15H Bi D Adjustment data 36 lt n lt 36 00H 41 p g settings settings for Normal x3 by 1 1440 inch 00H Password 0 OFH 16H Bi D Adjustment data 36 lt Nn 36 00H 41 for Variable 2 by 1 1440 inch 01H 5AH 17H Bi D Adjustment data 36 lt N lt 36 00H 41 02H EEPROM mapping revision 41H for Variable 1 by 1 1440 inch 03H reserved 00H 18H Uni D Adjustment data 36 lt N lt 36 00H 41 by 1 1440 inch 04H CG STD 00H 1 y Inc NLSP 19H reserved 00H 05H Market ID Standard 00H 1 1AH reserved 00H World Custom 1BH 1st dot position adjustment 00H 41 dat 06H 07H Custom EEPROM sub number 00H 00H Sea 08H 09H 1CH reserved 00H OAH Head actuator rank ID for VAN 00H 41 1DH reserved 00H OBH reserved 00H 1EH reserved 00H OCH reserved 00H 1FH ERROR Code 00H 00H ODH Head actuator rank ID for VAL 00H 41 20H 21H CPSI password 00H 00H 22H 23H OEH Head actuator rank ID for VhU 00H 41 24H CPSI li fl 0 disable 00H 00H OFH Head actuator rank ID for VhM 00H 41 pee E 1 enable 10H reserved for Head ID 00H 41 25H CPSI font license 0 disable 00H 00H 11H reserved for MicroWea
68. 6 Clean and lubricate the carriage guide shaft Reinstall the printhead and the CR Unit Perform the Parallelism adjustment oO a A 0 N Enter the 1 C replacement sequence to install a new I C and make sure it is completed 7 Ink Charge Flag Reset 8 Head Angular Adjustment 9 Bi Directional Adjustment Waste Ink Pad 1 Clear the protection counter value CR Motor 1 Bi Directional Adjustment Program ROM 1 Head Actuator Voltage ID Input replacement p 2 Bi Directional Adjustment Disassembly and Assembly Disassembly Procedures 105 Revision C EPSON Stylus Color 900 4 2 1 Upper Case and Control Panel Removal 1 Remove the sheet guide 2 Open the upper case 3 Open the output tray Screws securing Screws securing the Upper Case the Control Panel Sheet Guide Control Panel Output Tray Screws securing the Front Case Front Case Figure 4 2 Upper Case Removal Disassembly and Assembly Remove one screw securing the front case on the left to the printer mechanism then pull the front case forward and remove it from the printer Pull the output tray to the left and remove it Remove two screws securing the control panel to the printer mechanism to release the control panel Then disconnect the FFC from the control panel and remove the control panel from the printer Remove four screws securing the upper case When assembling n
69. 88 659 HARNESS ASF 624 SHAFT ROLLER LD 663 C B P TITE P4 3X8 F ZN 625 LEVER HOPPER RELEASE 664 626 HOPPER 665 C B P TITE SCREW 3X6 F ZN 627 REINFORCEMENT PLATE 666 C P P TITE SCREW 4X12 F ZN HOPPER 628 EDGEGUIDE 667 C B P TITE 2 5X5 F ZN 629 SLIDER EDGEGUIDE 668 C B S SCREW 630 COMPRESSION SPRING 3 23 669 RETAINING RING 631 PAD BREAK EDGE GUIDE 670 RETAINING RING 632 CORK 671 RETAINING RING 633 CORK B 672 PLAIN WASHER 6 1X0 5X12 F NI 634 SHAFT MOUNT CR 673 PLANE WASHER 12 2X0 5X15 635 C P S TITE P4 3X6 F ZN 674 PLANE WASHER 636 SHEET PAPERFEED 675 LEAF SPRING Appendix Parts List 186 EPSON Stylus Color 900 Revision c 7 5 Exploded Diagrams See the following pages for the Exploded diagrams Appendix Exploded Diagrams 187 82 for LATIN gt E s for EAI LATIN ATN 411 for ETT for EUR ASIA OSEANIA 10056 Rev 01 EPSON STYLUS COLOR 900 No 1 10056 Rev 01 EPSON STYLUS COLOR 900 No 2 10056 Rev 01 EPSON STYLUS COLOR 900 No 3 EPSON STYLUS COLOR 900 No 4 Rev 01 10056 589 590 Se pt E AJO 589 590 589 59 Ne S 589 soo 86 Nes DS EPSON STYLUS COLOR 900 No 5 a Rev 01 10056 EPSON STYLUS COLOR 900 No 6 Rev 01 10056
70. 900 Revision C O Interface state and interface selection 1 3 7 1 IEEE 1284 4 Protocol m When an interface other than parallel interface is selected the The packet protocol described by IEEE1284 4 standard allows a device parallel interface goes into the BUSY state to carry on multiple exchanges or conversations which contain data m When an interface other than serial interface is selected the and or control information with another device at the same time across serial interface sets the DTR signal to MARK a single point to point link The protocol is not however a device control language It does provide basic transport level flow control and m When an interface other than optional interface is selected the multiplexing services The multiplexed logical channels are independent printer sets OFF LINE bit of MNSTS register to the optional of each other and blocking of one has no effect on the others The interface protocol operates over IEEE1284 m When the printer is initialized or returned to the idle state the O Automatic selection parallel interface enters ready state and the serial interface sets An initial state is compatible interface and starts IEEE1284 4 the DTR signal SPACE and the printer resets OFF LINE bit of communication when magic strings 1 284 4 synchronous MNSTS register to the optional commands are received NOTE An interrupt signal such as INIT on the parallel interface is O ON not effective while that interface
71. A temperature detection circuit included in the nozzle selector detects the temperature of each actuator in the 5 row PZT array This must be performed to avoid false firing If the printhead continues the firing motion but no ink is ejected the temperature inside the printhead rises to 100 C and the printhead might be damaged as a result To prevent this from happening the abnormal temperature detection circuit is included in the nozzle selector circuit The followings are possible reasons for false firing 1 If an ink cartridge has been removed before its life end and is installed again the ink consumption counter value is upset and the counter fails to detect the actual remaining ink level This wrong operation dangerously causes the printhead to keep firing without any ink remaining in the cartridge 2 Serious dot missing can also cause false firing In this case there is enough ink in the cartridge but it does not properly flow into the head because of a clogged nozzle s If the PZT is driven without any ink flow heat generated by the nozzle movement can not be released and this makes the temperature around the head abnormally high 3 Strong vertical impact applied to the head causes a considerable amount of ink around the nozzle to leak all at once as well as damages meniscus on the head surface As a result ink does not properly eject at the next printing and ends up in a false firing status Electrical Circuit Operatio
72. ASF 538 HARNESS PE 561 BOARD ASSY ENCODER 585 HOLDER STAR WHEEL RIGHT 608 SOLENOID 539 DETECTOR HP 562 HOLDER BOARD ENCORDER 586 HOLDER STAR WHEEL LEFT 609 LEVER TRIGGER 540 HARNESS HP 563 PLATE SLIDE CLEANER 587 oe Ay STAR WHEEL 610 EXTENTION SPRING 0 21 541 NYLON CLIP 564 SLIDER CR 588 HOLDER ASSY STAR WHEEL 611 SHAFT DE PLANET 542 SHEET COVER M B 565 TORSION SPRING 98 LEFT ASP Appendix Parts List 185 EPSON Stylus Color 900 Revision c Table 7 25 Parts List 5 6 Table 7 26 Parts List 6 6 No Description No Description No Description No Description 612 LEVER CHANGE 637 HOLDER SHEET PAPERFEED 676 LEAF SPRING 1 INDIVIDUAL CARTON BOX FOR 613 COMBINATION GEAR 14 4 24 638 ROLLER ASSY LD LEFT AMERA 614 SPUR GEAR 20 8 639 ROLLER ASSY LD RIGHT SE A 3 eee 615 COMBINATION GEAR 12 8 640 COVER ROLLER LD LEFT Pea ery t Ce CRE Cry 27 2 679 CLAMP FERRITE CORE 5 PAD STACKER 616 COMBINATION GEAR 20 38 4 641 COVER ROLLER LD RIGHT 700 PRINT HEAD IJ480 0A0 6 RLASTIC PROTECTIVE BAG 617 SPUR GEAR 26 25 642 COMPRESSION SPRING 1 961 phn 620 FRAME ASF 643 PAPER LOADING ASSY RIGHT AAA 621 WHEEL DETECT 644 PAPER LOADING ASSY LEFT 622 LEVER FASTEN 658 SPUR GEAR 27 2 EDGEGUIDE B 623 EXTENSION SPRING 0 0
73. B 1 2 10 Acoustic Noise O Level Approximately 47 dB A According to ISO 7779 Product Description Specifications 22 EPSON Stylus Color 900 Revision C 1 3 Interface The EPSON Stylus Color 900 is equipped with USB bi directional 8 bit parallel interface serial interface and a card slot for an optional Type B interface 1 3 1 Parallel Interface Forward Channel Transmission mode 8 bit parallel IEEE 1284 compatibility mode By STROBE pulse BY BUSY and ACKLG signal Oo O Synchronization O Handshaking O Signal level TTL compatible level O Adaptable connector 57 30360 amphenol or equivalent The BUSY signal is set high before setting either ERROR low or PE high and held high until all these signals return to an inactive state The BUSY signal is HIGH E During data entry see Data transmission timing EH When the input data buffer is full E While INIT signal is at LOW level or during hardware initialization During a printer error condition See ERROR signal When the parallel interface is not selected Product Description The ERROR signal is LOW when one of the following error has occurred E Printer hardware error fatal error NH Paper Out error E Paper Jam error Ink Out error The PE signal is at a high level during Paper Out error See Figure 1 8 and Table 1 9 which show the data transmission timing DATA dala byien Tea lt thold _ gt STROBE lt g
74. HES NACIO N CROTL2 4342 BAK LENDS REF Pro AC SENS 17 amp A lt LGNITH FY A105 jaa 2 1 160 I pa MMCTSOOmA AME AMI FAN 5 A A D axx 3 105 Beas o axy 2 7 Beaty 9 Tres AER SCKREF SCKX amp SOKYIZEND UA FUE do 7 NONS ppi 50a Na SCKY STON vec i HEAD 7 cres Ecis 2 5305 T S38 enD san EN 1 or 77 o cas aig Eriu 252 8 oaout GND45 EA ZN ENCAE ENCBIEGNDT H FY FHSS VOL TONO 23 M me al ANODE1 FIVER GFBIL A OAN 5 t TEA T7 Esa eae EHAN Ha Y W Hm i Boe 3 4 Ha A Foret H aH ts Eas 13 fe Te 11 Wi paou WL Stylus COLOR SM NADD MAIN BOARD 03 04 of
75. Ink Pad nasses 155 Fan CN Gk visas aaa ohea iiaii i ot iaa daia 157 Paper Gap Adjustment ccececeeeeeeneeeeeeeeeeeeeeeeaeeeeeesaaeeeeeteaeeeeeeeaa 158 Maintenance ONVETVIEW iorno a A pease ATA 162 Maintenance vastnet ea AERA tea tee pai SAE OA 162 Cleaning the Printhead coooooooccccnnonoccccccnoconcncnannnnnnncnnno nc nn nonnnnnnannnnnnno 163 Maintenance Request Error eeccceeeeessseeeeeeneeeeeeenaeeeeseeeaeeeeeneaaes 164 Lubrication and Adhesion 0 0000 ececcee tenn eee ee tence ee eeeaaeeeeeeeaeeeeeteaa 165 Lubricating the Carriage Guide Shaft ocooonnoccccnonnocccccnonccncccccnnnccnnnnnns 166 Appendix Connector Summary 0 0 0 0 ee eee eeee ee eeeee ee eee no nn cc nana rra 172 EEPROM ADDRESS MAP 0000oo eee eect nee etree ee rancia nn cnn 176 Component Layout occitano ra 180 Parts LiSti Ao is 184 Exploded Diagrams oooooccccconnocccccnnnocccccnononnnccnnn nn nn cnn rra rca nn 187 Circuit Diagrams 0oococonocccoconnocccccnnonono conan onnncnnn nan nn cnn nn 195 EPSON Stylus Color 900 Revision C 1 1 FEATURES The Stylus COLOR 900 is the latest in EPSON s advanced lines of ink jet printers and offering the following features O High color print quality 1440 H x720 V dpi printing Printing with 4 color inks YMCK Traditional and New Microweave Imprevement in color rendering using variable dot O Built in auto sheet feeder Holds 100 cut sheets 64 g m Holds 1
76. N Stylus Color 900 Revision C 3 1 1 Troubleshooting with LED Error Indications This section describes how to troubleshoot the problem when the printer indicates an error at power on and can not print The Stylus See the following tables which show the error conditions and corresponding possible causes Table 3 2 Error Condition and the Possible Causes Color can detect the following six errors and indicates them with the No Error Condition Possible Causes LEDs as shown below Paper Out Error 1 Failure in paper feeding oe Refer to Section 2 Connector for the PE sensor is disconnected Table 3 1 Error Indication with the LEDs Me 1 1 RS 3 The PE sensor actuator is acting improperly Corresponding Combination of the LED Condition The sensor base is not fixed properly Error Condition Ink Out Ink Out 4 The PE sensor is defective Rower LETeo 9 Color Paper Out 5 ASF is damaged Paper Out Error On _ On 2 Paper Jam Error 1 The paper in use is longer than specified Refer to Section 2 The encoder at the back of the carriage is covered Paper Jam Error Off Off Blink 3 1 1 2 with dust No I C or Ink Out On SES 3 The encoder at the back of the carriage is almost Black Error dislocated If it has completely come off a fatal error uE E occurs a pS B n 2 4 The PE sensor remains on because it is covered Color Error r wi
77. ODE4 temperature detection for each color CXA2128 IC16 vecas ANODES The VEC4S 2 a I C detection signal iil ae ie co iad CLK2 FB Data latch signal HT og HSO_C HWFLR FLOOR 7 Ban r signal TT fioo Hs0_ 21 eT E DATA B1 a ea Uhol HSO_B2 HWSLC CE ae DCLK Charging discharging INV esa a Lil HINV HWSLAT circuit for color nozzles come Color nozzle row CN9 Figure 2 18 Printhead Driver Circuit Block Diagram Operating Principles Electrical Circuit Operation Principles 73 EPSON Stylus Color 900 Revision C 2 3 7 Cooling Fan Driver Circuit Figure 2 20 shows the main routine of the cooling fan drive Since this printer drives a large number of PZT elements total of 480 nozzles with a high drive frequency maximum 32 4 K Hz heat radiated around the printheads and the trapezoid waveform production 4 Heatsine Bmpersureen hie cos manboar circuit on the C265 main board is considerably large compared to other t2 TH1 temperature on the C265 main borad printers Therefore a thernmistor is attached to the heat sink fixed to thetrapezoid waveform production transistors to prevent the trapezoid waveform production transistors Q3 Q6 and adjacent HIC from operating abnormally due to high temperature When the thermistor detects abnormally high temperature the printer turns the cooling fan S on to forcibly blow out heat from the lower case Figure 2 19 shows the cooling fan
78. PANEL 132 SHIELD PLATE P S UPPER 181 LABEL ACCESSORY 512 BUSHING PULLEY DRIVEN RIGHT 200 BOARD ASSY MAIN 513 COMPRESSION SPRING 48 112 HOUSING PANEL LEFT 133 SPACER SHIELD PLATE 300 BOARD ASSY POWER 514 INK SYSTEM ASSY 113 POROUS PAD INK EJECT L 134 FOOT P S SUPPLY 114 POROUS PAD INK EJECT R 135 MOUNTING PLATE FAN 330 WIRE HARNESS 515 MOTOR ASSY PF 115 LOGO PLATE 136 GUIDE FRAME FAN 331 WIRE HARNESS 516 GROUNDING PLATE FRAME 116 COVER POROUS PAD INK 137 SHIELD PLATE I F LOWER EJECT 332 WIRE HARNESS 517 LINEAR SCALE 117 SPACER POROUS PAD INK 138 SHIELD PLATE MAIN LOWER 333 WIRE HARNESS 518 PAPER GUIDE RIGHT EJECT 334 WIRE HARNESS 519 PAPER GUIDE UPPER 118 FOOT 139 GROUNDING PLATE M B 335 FAN ASSY 520 PAPER GUIDE LEFT Appendix Parts List 184 EPSON Stylus Color 900 Revision c Table 7 23 Parts List 3 6 Table 7 24 Parts List 4 6 No Description No Description No Description No Description 521 SHAFT PAPER GUIDE UPPER 543 CLEANER HEAD ASP 566 LEVER DETECTOR IC BK 589 ROD SPRING STAR WHEEL 522 TORSION SPRING 117 6 545 SHAFT CR GUIDE 567 LEVER DETECTOR IC C 590 STAR WHEEL ASSY 8 D 523 SHAFT ROLLER DRIVEN 546 LEVE
79. PC 866 UKR PC APTEC Arabic PC 708 Arabic EPSON Roman Not subbort d PC 720 Arabic PC AR864 Arabic EPSON Sans Serif PP Hebrew7 EPSON R Hebrew 8 ee Sah Not supported PC862 Hebrew Not mentioned in the User s Guide These character tables can not select in the default setting mode Product Description Specifications 13 EPSON Stylus Color 900 Revision C 1 2 2 Options and Consumable Products Table 1 6 EPSON Special Media i e Items Codes NOTE The asterisk is a substitute for the last digit of the product y EPSON 360 dpi Ink Jet Paper A4 S041059 S041025 number which varies by country EPSON 360 dpi Ink Jet Paper Letter S041060 S041028 NOTE The availability of special media varies by country EPSON Photo Quality Ink Jet Paper A4 S041061 5041026 t EPSON Photo Quality Ink Jet Paper Letter S041062 S041029 Table 1 4 Options Available for Stylus Color 900 y Peri y EPSON Photo Quality Ink Jet Paper Legal S041067 S041048 Items Codes a EPSON Photo Quality Ink Jet Card A6 8041054 32KB Serial I F card C82307 C82308 EPSON Photo Quality Ink Jet Card 5 x 8 S041121 32KB Parallel Interface Card C80310 EPSON Photo Quality Ink Jet Card 8 x 10 041122 Coax I F card C82314 z EPSON Photo Quality Self Adhesive Sheet A4 S041106 Twin ax I F card C82315 EPSON
80. R PG SUB 568 TORSION SPRING 2 04 591 HOLDER FFC CENTER 524 ROLLER DRIVEN E 547 OIL PAD 569 COVER DETECTOR IC 592 HOLDER FFC LEFT 525 HOLDER LINEAR SCALE 548 COVER CARTRIDGE BK 570 MOTOR ASSY CR 593 CABLE HEAD SHORT 526 EXTENTION SPRING 2 13 549 COVER CARTRIDGE C 571 INSULATOR MOTOR CR 594 CABLE HEAD LONG 527 BUSHING PARALLEL ADJUST 550 LABEL LEVER CARTRIDGE 572 SPACER INSULATOR 595 SPUR GEAR 16 5 RIGHT BLACK 573 FRAME MOTOR CR 596 BUSHING 6 528 BUSHING PARALLEL ADJUST 551 LABEL LEVER CARTRIDGE LEFT COLOR 574 HEXAGON NUT 597 BUSHING 12 529 HOLDER FFC RIGHT 552 LIFTER CARTRIDGE BK 575 HOLDER FFC CR 599 BUSHING 12 LEFT 531 PAPER SUPPORT SUUPPORT 554 DETECTOR I C 578 PAPER GUIDE REAR 601 SPACER FASTEN ROLLER PF UPPER 579 ROLLER PF 602 SPACER FASTEN ROLLER 532 FRAME ASSY PAPER 555 HARNESS DETECTOR IC PF B SUPPORT 580 PAPER GUIDE FRONT 603 COMBINATION GEAR 22 81 533 EXTENSION SPRING 0 29 556 HARNESS ENCODER 581 ROLLER PAPER EJECT 604 C RING 534 HOLDER DETECTOR PE 557 CARRIAGE ASSY 582 FRAME PAPER EJECT 605 SCALLOP SPRING PIN AW 535 LEVER DETECTOR PE 558 GROUNDING PLATE HEAD 2X16 F B 536 TORSION SPRING 0 22 559 LEVER HEAD ADJUST 583 ANTI STATIC CLOTH 606 FRAME SUB ASSY DE 537 CIRCUIT ASSY PE 560 LEVER HEAD FASTEN 584 HOLDER STARWHEEL FRONT 607 MOTOR ASSY
81. Remote Printer language 1 3 6 Prevention Hosts from Data Transfer time out Generally hosts abandon data transfer to peripherals when a peripheral is in the busy state for dozens of seconds continuously To prevent hosts from this kind of time out the printer receives data very slowly several bytes per minute even if the printer is in busy state This showdown is started when the rest of the input buffer becomes several hundreds of bytes Finally the printer is in the busy state continuously when the input buffer is full 1 3 7 Auto Interface Selection The EPSON Stylus Color 900 has four types of interfaces USB parallel interface Mac serial interface and optional Type B interface Each interface can be selected manually in default setting mode or automatically O Manual Selection One of four interfaces can be selected in default setting mode O Automatic Selection The automatic interface selection is enabled by the default setting mode In this automatic interface selection mode the printer is initialized to the idle state scanning for which interface is to receive data when it is powered on The interface that receives data first is selected When the host stops data transfer and the printer is in the stand by state for a number of seconds the printer returns to the idle state As long as the host sends data or the printer interface is busy state the selected interface is let as it is Interface 29 EPSON Stylus Color
82. SERVICE MANUAL Color ink jet printer EPSON Stylus Color 900 Revision C SEIJ98006 Notice E All rights reserved No part of this manual may be reproduced stored in a retrieval system or transmitted in any form or by any means electronic mechanical photocopying recording or otherwise without the prior written permission of SEIKO EPSON CORPORATION E The contents of this manual are subject to change without notice m All effort have been made to ensure the accuracy of the contents of this manual However should any errors be detected SEIKO EPSON would greatly appreciate being informed of them The above not withstanding SEIKO EPSON CORPORATION can assume no responsibility for any errors in this manual or the consequences thereof EPSON is a registered trademark of SEIKO ERSON CORPORATION General Notice Other product names used herein are for identification purpose only and may be trademarks or registered trademarks of their respective owners EPSON disclaims any and all rights in those marks Copyright 1996 SEIKO EPSON CORPORATION Printed in Japan PRECAUTIONS Precautionary notations throughout the text are categorized relative to 1 Personal injury and 2 damage to equipment DANGER Signals a precaution which if ignored could result in serious or fatal personal injury Great caution should be exercised in performing procedures preceded by DANGER Headings WARNING Signals a precaution which if ignored
83. Screws Figure 5 52 j i 8 When the printhead is in contact with the thickness gauge check if Right and Left Parallelism Adjustment Bushing Locations the thickness gauge moves Adjustment Adjustments 158 9 EPSON Stylus Color 900 If the thickness gauge does not move move the right parallelism adjustment bushing upward by one notch The direction for moving the bushing and corresponding change in PG amount is as shown in the following figure PG Widen Figure 5 54 Bushing s Movement and Corresponding Change in PG Amount NOTE Be sure to release the parallelism adjustment bushing right left from the frame before turning it Otherwise the teeth may crush and the adjustment can not be done 10 Repeat the steps from 3 to 9 until the thickness gauge moves being pushed by the printhead 11 When the thickness gauge starts moving move the carriage away from the thickness gauge set by pulling the timing belt The carriage moves back to the left 15 16 17 18 19 20 Revision C 13 By pulling the timing belt move the carriage again to the position where the thickness gauge is set and make sure the thickness gauge does not move 14 Place the thickness gauge on the 80th column position and adjust the with the left parallelism adjustment bushing in the same manner as for the right parallelism adjustment bushing NOTE Make sure the PG lever blue is set properly depend
84. Upper Case Control Panel Removal Printhead Removal CR Motor Removal Printer Mechanism Removal C265 Main Board Removal Relay Board Cooling Fan Removal Shield Plate on the C265 Main Board Removal ASF Removal ASF Disassembly ASF Sensor Removal PF Motor Removal C265 PSB PSE Removal Pump ASF Motor amp Solenoid Removal CRHP Sensor Removal PE Sensor Removal Front Frame Removal Encoder Belt Removal Paper Eject Roller Removal Platen Removal Carriage Unit Removal Pump Unit Removal PF Roller Removal Figure 4 1 Disassembly Flowchart Disassembly and Assembly Disassembly Procedures 104 EPSON Stylus Color 900 Revision C If you have replaced specified parts you must make Table 4 1 necessary adjustments See the following tables Removed Replaced Parts and Corresponding Adjustments which shows the parts removed replaced and R E Actions taken Step Corresponding adjustment required corresponding adjustments required and perform adjustments in the correct order See Chapter 5 Printhead 1 Install a new I C in the I C replacement sequence Adjsutment for detailed procedures Head Actuator Voltage ID Input Ink Charge Flag Reset Head Angular Adjustment o A j N Bi Directional Adjustment C265 Main board 1 Head Actuator Voltage ID Input 2 Bi Directional Adjustment CR shaft 1 Remove the Printhead and CR Unit Remove the oil pad Refer to Chapter
85. al O Function Pin Signal Name I O Function 1 ANODE1 l Row A temperature detection analog signal La QUE oreune 2 ANODE2 l Row A temperature detection analog signal SE NRA N E A A 3 GND2A Ground for the Nozzle Row A 3 ESE pe An sold 4 GND2A Ground for the Nozzle Row A 5 COMa O Power voltage for the Nozzle Row A black 6 COMb O Power voltage for the Nozzle Row A black Table 7 3 Connector Pin Assignment CN6 p 7 GND2B Ground for the Nozzle Row B nozzles Pin sl VO Function 8 GND2B Ground for the Nozzle Row B nozzles 1 6 GND Ground 9 ANODES 1 Row C Cyan temperature detection analog signal sear er j e UD 10 ANODE4 l Row D Magenta temperature detection analog signal 11 GND2C Ground for the Nozzle Row C 12 GND2C Ground for the Nozzle Row C 13 COMc O Power voltage for the Nozzle Row C 14 COMd O Power voltage for the Nozzle Row D 15 GND2D Ground for the Nozzle Row D 16 GND2D Ground for the Nozzle Row D 17 VHV O Power supply for the comparator Nozzle Selector 18 GND Ground 19 TH l Analog data from the thermistor on the printhead 20 LS2 l Phase B signal from the linear encoder 21 LS1 Phase A signal from the linear encoder Appendix Connector Summary 173 EPSON Stylus Color 900 Revision c Table 7 6 Connector Pin Assignment CN10 Table 7 5 Connector Pin Assignment CN9
86. am prompts ROM replacement or converts head the Type B I F cover ID to be registered This is required to keep the print quality even among all combinations This complicated operation can be easily done by following the user interface of this program See the flowchart in the next page for the detailed process of ID input Figure 5 9 ROM Version Selection Screen 7 Remove the Type B interface and check the version of the currently installed ROM Note the ROM version whose last digit is A B or C is defined as Old ROM while the one tailed with D or newer is defined as New ROM 8 After checking the ROM status New or Old select Old ROM or New ROM in the screen Adjustment Adjustments 138 START EPSON Stylus Color 900 Revision C What The program prompts to 1D input menu What is the Old ROM does the 22nd New head replace the old ROM with the E q l ROM version E T digit of the technical revised one TEE01D or newer The input ID is registered inthe TEEO1C or olde code show D or newer and press the Y key after replacement EEPROM without compensation Old head ID input menu The input ID is registered in the EEPROM without compensation New ROM TEE01D or newer C or older What lt does the 22nd New head ID input menu The input ID is registered in the digit of the technical i code show D or newer EEPROM without
87. an 7 S amp S 4 Is the C265 If the cause has not been isolated yet in the previous Main board steps replace the C265 Main board defective Troubleshooting Overview 95 EPSON Stylus Color 900 Revision C Table 3 29 Cleaning does not Solve the Print Problem Table 3 30 Cleaning does not Solve the Print Problem continued Step Check Point Action Step Check Point Action 1 Repeat the cleaning Unlike the previous products the Stylus Color 900 4 Check the cap for any Remove the printer mechanism and release the 7 or 8 times is not equipped with the CL3 dummy cleaning foreign matter dirt or carriage lock at the back of the printer Therefore you can repeat the cleaning every time damage mechanism to move the carriage unit away from you press the Cleaning button without running a the home position Then have a close look at self test nor any printing the cap rubber and check for any problem below 2 Trying the initial ink You can repeat the initial ink charge operation in Forel charge operation the way described below nag mancr 1 Using the exclusive program reset the initial ink charge flag in the EEPROM 2 Turn the printer back on Refer to Chapter 5 for details Damaged area 3 Reinstalling the Remove the upper case and check if the FFCs are on the rubber printhead FFC properly connected to the CN8 and CN9 on the C265 Main board Even though they are not installed aslant as shown below disconnect t
88. are input from the pre driver side TH Heat Sink Tr for the color nozzles Tr for the black nozzles y Unlike the previous products the procedure after head replacement is precisely specified Therefore be sure to follow the steps in Table 3 34 exactly The background of the procedure is explained after the table Table 3 34 Ink End Error Occurs after Printhead Replacement Action Turn the printer power off Replace the printhead Turn the printer back on The printer is in No Ink Cartridge condition Keep the Load eject button pressed down for several seconds The printer enters the I C replacement sequence The printer moves to the black ink cartridge replacement position first then to the color cartridge replacement position if the Load Eject button is pressed Input a 21 digit head IC Refer to Chapter 4 Adjustment for details Perform the initial ink charge operations Refer to Chapter 4 Adjustment for details 7 Perform the head angle adjustment Refer to Chapter 4 Adjustment for details 8 Perform the Bi D adjustment Refer to Chapter 4 Adjustment for details 9 Perform the Uni D adjustment Refer to Chapter 4 Adjustment for details If the waveforms are not output correctly replace the 1C15 16 or C265 Main board If the waveform is output correctly replace the corresponding power transistor
89. ase be aware that the program runs Figure 5 20 a cleaning that is originally supported by the hardware if no action Yes No Selection Menu before Head Angular Adjustment was made for 3 minutes before moving the carriage Note if the printer enters the cleaning before printing the Head Angular 11 At this point loosen the screw securing the head fixing plate on the Adjustment Pattern it is not abnormal In this case the program left of the carriage unit by turning it 90 180 Be careful not to follows the steps below to avoid misunderstanding remove it completely If you have already selected No in the Note Step 1 The initial screen same as in Figure 5 20 appears screen the program will indicate a message to prompt you to loosen The top screen in Figure 5 22 the screw prior to the adjustment See the figure below Be sure to oo select Yes in the screen Figure 5 20 after you have loosened the Note Step 2 If no action is taken for 3 minutes or more the next screw as instructed in this step screen appears The middle screen in Figure 5 22 Screw securing the Head Fixing Plate Note Step 3 As the program prompts press the Enter key The AS P middle screen in Figure 5 22 Note Step 4 The next screen The bottom screen in Figure 5 22 appears and the printer automatically performs the cleaning level CL1 Figure 5 21 Screw Securing the Head Fixing Plate on the Left Adjustment Adjustments 143
90. been replaced For a specific feature of ink jet printers an oil pad s must be lubricated with a special care Observe the instructions below and perform lubrication by strictly following the specified lubricants type amount and the way to apply E Never add oil to the currently used oil pad Be sure to supply specified amount of oil to a new oil pad Otherwise too much oil will be absorbed which damages the printhead Pay special attention in handling O8 so the printhead is not smeared with it E Never apply oil directly to the carriage shaft guide Be sure to remove the printhead unit and the carriage unit before replacing the current oil pad with a new one and then supplying oil to the new pad Accordingly you need to perform any necessary head related adjustment Refer to Chapter 5 Maintenance Lubrication and Adhesion Revision C When installing the carriage guide shaft after oiling the oil pad be sure to clean the shaft and perform the preliminary lubrication before installing the shaft as described below 1 Using a dry cotton cloth wipe off the oil on the carriage guide shaft surface well to remove dirt completely 2 Using the dry cotton cloth clean the inner surfaces of the metallic bushings on the carriage unit through which the shaft is inserted To remove iron pieces 3 Get anew oil pad and supply 08 0 5 cc into it 4 Using the oiled side of the pad lubricate over the whole surface of
91. bit lt NLSP version gt e PROM size 16 M bit e Contents 16 M bit e Bus width 16 bit Manages the various buffers and work area D RAM AN e Bus width is 16 M bit Counts total power off time of the printer which offers the basis for determining the cleaning type to be performed at the next power on Power is supplied by an external button cell battery a lithium battery This Timer IC IC also serves to produce reset signals connecting to each major IC such as CPU ASIC1 ASIC 2 and motor drive ICs The head driver ICs CXA2128 x 2 IC15 and 1C16 individually produce a reset signal when detecting abnormal voltage so the printhead can stop in the proper sequence Operating Principles Electrical Circuit Operation Principles EPSON Stylus Color 900 Revision C The control circuits are explained in detail below Combined reset circuit timer circuit A combined circuit RTC9810 manages both reset signal production and RTC Rear Time Controller It produces reset signals by monitoring the both 5 VDC line input to Pin 7 and 42 VDC line input to Pin 9 When the voltage level for the 5 VDC line drops to 4 3 V or the voltage level for the 42 VDC line drops to 35 5 V the combined circuit outputs a reset signal from Pin 2 When the printer is turned on off or detects abnormal voltage level the IC sends the reset signal to the following ICs to avoid printer damage caused by run away of the logic li
92. cated To check the waveform press the Load Eject button to connector To check the waveform press the Load Eject attempt to move the carriage Be sure to leave the cable button to attempt the ASF paper feeding Be sure to for the CR motor connected leave the cable for the PF motor connected Phase A Phase B Phase A and Phase B from the Pin 1 mark Phase A Phase B Phase A Phase B from the Pin 1 mark NOTE The GND can be output by placing the probe of NOTE The GND can be output by placing the probe of the oscillo scope to the tapped hole in the the oscillo scope to the tapped hole in the bottom plate on the board with a screw Note bottom plate on the board with a screw Note the connector has no ground line since this the connector has no ground line since this printer drives the motor with the bipolar system printer drives the motor with the bipolar system 2 Check of the While trying to drive 2 Check of the While trying to drive waveform and the CR motor the waveform and the PF motor the remedies waveform output remedies waveform output from from each phase each phase should be should be as shown as shown in the in the figure If the figure If the waveform output waveform output from from each phase is each phase is as as shown below shown in the figure replace the CR replace the PF motor motor If not If not replace the replace the 1012 CR motor driver IC or C265 Main 1C11 PF motor driver IC or C265 Main board board
93. ccccceeceseceeeneeceeceeeeeeeeeeeeecaeaeeeeeeeeeeeess 88 Isolating the Faulty Part on the Power Supply Board eeeeeeees 90 Isolating the Faulty Part according to the Phenomenon 000 92 Disassembly and Assembly OVerVIEW A E eos 102 Precautions for Disassembling the Printer cccceeseeeeeeeeeeeeeeeees 102 Disassembly Procedures cccccceceeeeeeeeeeeeeeeeeeeeeeeeeeeeseneeeeeeeeeeeeeeess 104 Upper Case and Control Panel Removal ccecceeeeeeeeeeeeeeeeeeeeees 106 Printer Mechanism Removal cccccncccncncccccccncncncnonononnnnnnnnnnnnonononononononos 107 C265 Main Board Unit Removal ooononcncncnnccccccnonnnnnnnnnnnnnonononnnonnnnnnnnnos 108 Relay Board and Cooling Fan Removal cccessecceeeeesteeeeeeeneeeeeeeee 109 Shield Plate on the C265 Main Board Removal c ccccssssssseeseeeees 110 C265 PSB PSE Board Removal cccccccecececceeeeeecesesaeaeaeseseaeaeeeseeees 111 Printer Mechanism Disassembly ccccceeeeeeeeeeeeeeeeteeeeeeeneeeeeeeeea 112 Printhead Removal icicice teceton inciinetien a 112 CR Motor Removal ccccccceccceesececeeseaeeesseeesssseseeeeeseseseseeeeeeeeeseeeees 114 PE Motor R moval voii A aa i 115 Pump ASF Motor and Solenoid Removal c coococcccccncocccccccccancnncnannnnos 116 ASF Unit REMOVA usina as 116 ASF Sensor Removal cococccccnonoccccnononnccnnnnnnnnnnnnnnnonnnnnnnnnnnnnnnnnnnnnnnnnnnns 12
94. ck on and the Initial Ink Charge begins automatically 3 Input a 22 digit ID in Head Actuator Voltage ID Input using the service program 4 Perform Head Angular Adjustment using the service program 5 Perform Bi Directional Adjustment using the service program 2 C265 Main board 1 Input the model name in the service program replacement p 2 Select the destination in the service program lt Purpose gt To set the CG and default value 3 Input a 22 digit ID in Head Actuator Voltage ID Input using the service program 4 Perform Bi Directional Adjustment using the service program Adjustment Overview 132 EPSON Stylus Color 900 Revision C Table 5 3 continued Actions Taken and Corresponding Adjustments in Order No Actions taken Step Corresponding adjustment required 4 Clogged nozzles 1 Perform Head Cleaning using the service recovery program 2 If the step 1 is not effective perform Ink Charge Flag Reset using the service program and then turn the printer off In 10 seconds turn the printer back on and Initial Ink Charge begins automatically 5 Waste Pad 1 Replace the waste ink pad replacement 2 Return the current counter values for the waste ink pads to zero by selecting Indication of the counter value of waste ink pad then Clear the protection counter value using the service program 6 CR motor 1 Perform Bi Direc
95. compensation The program automatically gt compensates the input data and registers it in the EEPROM Old head Cor older Figure 5 10 Detailed Flowchart for the Head Angular Voltage Input NOTE As shown in the flowchart there are two specific cases which are 2 The ROM s version is new and the newly installed printhead s version is old 1 The ROM s version is old and the newly installed printhead s For this combination the program automatically converts the version is new OS input ID so the ID matches the old head Therefore please be FORTIS TOMI mauON me r ogram pr ompts you to revise the aware that the ID indicated in the screen differs from the one current ROM with a new version because the old ROMs do not you have actually input support new printheads Adjustments 139 Adjustment Revision C EPSON Stylus Color 900 9 Type exactly the 22 digit Head ID you made a note of If you type a wrong ID the program automatically calculates and detects it The screen returns to the ID input screen The following screen shows the process the program takes for a wrong ID In this screen press Enter and the screen returns to the Head ID Input Screen Figure 5 8 e sj Al Enter the 22 digit voltage ID HEAD ACTUATOR VOLTAGE ID As the head actuator voltage 434 has been written in EEPROM Figure 5 11 Screen for ID Correction for New ROM As the head actuat
96. condary side has numbers of stabilizing circuits to output stabilized voltages as listed below E Smoothing circuit Since the energy led from the transformer T1 to the secondary side by the electromagnetic induction is alternating current it must be smoothed by the electrolysis condensers C51 and C52 to be direct current E 42 V line constant voltage control circuit 7 zener diodes ZD51 ZD81 ZD86 connected in series monitors 42 V status used to drive various mechanisms To keep the output voltage at a constant levell the circuit controls the on off timing of the Q1 slightly according to the signals fed back from the photocoupler PC1 mM 42 V line overvoltage protection circuit This circuit includes 2 zener diodes ZD52 ZD87 connected in series It monitors the 42 V line used to drive various mechanisms to detect abnormal rise in the voltage level caused by a defect in the circuit If the output voltage rises to 48 V the signal is input to a port of one of the 2 channels in the photocoupler PC1 to completely cut off the Q1 operation Once this circuit is active a normal flow does not recover unless the printer is turned off and back on m 5 VDC production circuit L4960 IC51 produces 5 VDC out of 42 VDC Since the IC internally operates PWM control it can always produce constant 5 VDC by changing output pulses in spite of diverse input voltage levels This operation serves as a constant voltage control circu
97. connects a current from the 6 Sw2 Detects Cleaning SW condition Phase A to the ground via the coil 7 LEDO O Power LED drive signal 4 ASF B V O Phase B Input Output data When inputting connects a current from the 8 LED1 O Color ink Near Empty or perfect out LED drive Phase B to the ground via the coil signal 9 LED2 O Paper Out Error LED drive signal 10 LED3 O Black Ink Near Empty or perfect out LED drive signal Table 7 9 Connector Pin Assignment CN13 11 5V O Power supply for the LED PE sensor Signal Name I O Function 12 5V O Power supply for the LED PE sensor 1 35V O Power supply for driving the fan 13 GND Ground 2 GND Ground 14 ASF ASF sensor condition detection signal 15 PE PE sensor condition detection signal p 16 HP HP sensor condition detection signal Table 7 10 Connector Pin Assignment CN14 2 i a i 17 PEVCC O Power supply for the PE sensor drive Pin Signal Name I O Function 18 HPVCC O Power supply for the HP sensor drive 1 THM1 Analog signal for the temperature detection of the heat sink surface on the main board Table 7 12 Connector Pin Assignment CN16 2 THM2 Ground Signal Name 1 O Function 1 VBB O Power supply voltage for the solenoid excitation 42V 2 GND Ground Appendix Connector Summary 175 EPSON Stylus Color 900 Revision c 7 2 EEPROM ADDRESS MAP This section contains the EEPROM map for the Stylus Color 900 Table 7 1
98. could result in damage to equipment The precautionary measures itemized below should always be observed when performing repair maintenance procedures 4 DANGER ALWAYS DISCONNECT THE PRODUCT FROM THE POWER SOURCE AND PERIPHERAL DEVICES PERFORMING ANY MAINTENANCE OR REPAIR PROCEDURES NOWORK SHOULD BE PERFORMED ON THE UNIT BY PERSONS UNFAMILIAR WITH BASIC SAFETY MEASURES AS DICTATED FOR ALL ELECTRONICS TECHNICIANS IN THEIR LINE OF WORK WHEN PERFORMING TESTING AS DICTATED WITHIN THIS MANUAL DO NOT CONNECT THE UNIT TO A POWER SOURCE UNTIL INSTRUCTED TO DO SO WHEN THE POWER SUPPLY CABLE MUST BE CONNECTED USE EXTREME CAUTION IN WORKING ON POWER SUPPLY AND OTHER ELECTRONIC COMPONENTS WARNING REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY AN EPSON CERTIFIED REPAIR TECHNICIAN MAKE CERTAIN THAT THE SOURCE VOLTAGES IS THE SAME AS THE RATED VOLTAGE LISTED ON THE SERIAL NUMBER RATING PLATE IF THE EPSON PRODUCT HAS A PRIMARY AC RATING DIFFERENT FROM AVAILABLE POWER SOURCE DO NOT CONNECT IT TO THE POWER SOURCE ALWAYS VERIFY THAT THE EPSON PRODUCT HAS BEEN DISCONNECTED FROM THE POWER SOURCE BEFORE REMOVING OR REPLACING PRINTED CIRCUIT BOARDS AND OR INDIVIDUAL CHIPS IN ORDER TO PROTECT SENSITIVE MICROPROCESSORS AND CIRCUITRY USE STATIC DISCHARGE EQUIPMENT SUCH AS ANTI STATIC WRIST STRAPS WHEN ACCESSING INTERNAL COMPONENTS REPLACE MALFUNCTIONING COMPONENTS ONLY WITH THOSE COMPONENTS BY THE MANUFACTURE INTRODUCTION OF SECOND
99. ding roller gear train paper return control Normal rotation of the pump absorption e Releases the CR lock e Sets the wiper Reverse rotation of the pump motor Locks the CR Resets the wiper Reverse rotation e Connection to the ASF CCW gear train e Normal rotation of the loading roller paper separation paper loading EPSON Stylus Color 900 Revision C 2 2 4 Paper Feed Mechanism The paper feed mechanism manages constant paper feeding during printing through to paper ejection Unlike previous models the PF motor of this printer only drives the paper feed mechanism having no connection with the carriage lock mechanism nor the pump mechanism See Figure 2 5 and Table 2 11 for the cross section of the paper feed mechanism and the PF motor specifications respectively Table 2 11 PF Motor Specifications No Items Specifications 1 Type 4 phase 200 pole HB type stepping motor 2 Drive voltage 42 VDC 5 Applied to the driver 3 Coil resistance 8 1 Q 10 4 Drive mode Bipolar constant current drive mode For the printer specific feature the PF motor pinion transfers torque to the PF drive gear without any transmission gear in between The gears used for the PF motor pinion and the PF drive gear are very precise Therefore note the points below when handling them 1 Do not touch the gear surface with your bare hands 2 Keep other parts or tools for serv
100. e Super Fine paper for Head Angular Adjustment current head angular condition 1 Referring to Section 5 2 1 perform the preliminary operation 5 The following screen appears and the printer starts running Head Angular Adjustment Pattern 2 Inthe main adjustment menu select Adjustment 2 The following screen appears The Head Angular Adjustment pattern will be printed Bi Directional Adjustment Figure 5 15 Figure 5 13 Adjustment 2 Selection Screen Screen during the Head Angular Adjustment Pattern Print Adjustment Adjustments 141 EPSON Stylus Color 900 Revision C 6 The printer executes printing and automatically ejects the sheet find the one which satisfies the condition below Two white lines are symmetry Both right and left lines are the same width E If all patterns have white lines the one with the narrowest lines line is the best See the examples If you don t find a perfect H without white lines please Figure 5 16 Print Result of the Head Angular Adjustment Pattern below Considering the conditions above the Example 5 is the best 7 Referring to Figure 5 17 and Figure 5 18 determine whether the H Example 1 Example 2 Example 3 Example4 Example 5 shape patterns are good or not The figures includes four patterns which are OK and four patterns which are NG No Good OK Pattern Pattern 1 Pattern 2 Pattern3 Pattern4 Pattern 5 ala AH AH A A Figure 5 19 Example to
101. ead Cleaner Mechanism cceeee 54 Electrical Circuit Operation Principles ec ce eeeeeeeeeeeeeeeeees 56 C265 PSB PSE Power Supply Board ceccecceeeeeeeeeeeeeeeeeeeeeeeseeneeeees 56 C265Main Board iaieineea aiai a aaa aaae aaa a E a aE aaaea 59 CR Motor Driver Circuit c cccecccceceeeeeeeeeeeeeneeeceeeeseeeeseeeeeseneeeeeeees 67 PF Motor Driver Circuit c ceeeececceeeeeeeeeeeeeeaecaeceeeeeeeeeeeseeseenaeeaees 69 Pump ASF Motor Driver Circuit oocccconoocccccnonoccncnonacnnnnnnnnno cnn nn nana nnna ranma 71 Printhead Driver Circuit ooooooccnccnncncooooccnncnnccnnnnnnnnnnoncnnncnnnnnnnnnnnnnnnnnnnncnnn 72 Cooling Fan Driver Circuit cooooooncccnnnnccccnnnnccccccnnnnarccnnnnnrrrr cnn 74 ASF Solenoid Driver Circuit oooooooccccccccccccocananconconccnnnnnncnncnnnn ono nccnncnncnnnns 76 EEPROM Control Driver Circuit cooooccccccccccccccccnnccnnnnnnnoncnnccnnnnncnnanannnncnnnns 77 Troubleshooting Ove EW ea aara ra aaa aa a aa aaa aa arta ia 79 Troubleshooting with LED Error Indications 80 Remedies for Paper Out Error cccccceseeeeeeeeeeeeeeeeeeneeeeeeeenaeeeeeneeaaes 81 Remedies for the Paper Jam Error ececceeeeceeeeeeeeeeeeeeeeeeeeaeeeeeeeenaes 83 Remedies for No I C and Ink Out Errors oooocccconocccnnccccocnncccnnancnanonananos 85 Remedies for the Maintenance Error cccccceeeeeeeeeeeeeeceeceeeeeeeeees 87 Remedies for Fatal Error
102. econds Black Ink Out LED Color and Paper Out LED NOTE During the Step 2 if the Load Eject button is pressed the Maintenance Error is not cleared but the EEPROM initialization mode is activated instead The EEPROM initialization can be used to recover from conditions such as the printer does not accept any data from the PC The EEPROM initialization mode initializes the following items O Accumulated power off time The value for the Timer IC is reset O CL Timer The CL timer which is also called fire waiting timer secures the printer specific period of time so bubbles formed around the printhead during a cleaning vanish O I F selection Selects Auto the factory default from 4 I F selection items Auto Parallel Serial and Option Troubleshooting Overview 87 EPSON Stylus Color 900 Revision C 3 1 1 5 Remedies for Fatal Error Table 3 14 Remedies for Fatal Error T heck Poi Acti A fatal error is basically caused by any of the following conditions Sop wee Nana 3 Has the ASF sensor Referring to the figure below check that the ASF 1 The printer does not detect the carriage in the home position come off sensor is attached to the correct position 2 The printer does not detect signals from the linear scale Is the sensor for the Check that both connectors 1 and 2 are securely 3 The ASF sensor does not detect the ASF home position ASF disconnected connected ASF Sensor The following table
103. ector and the 1st digit of the printhead ID in the combination shown in Table 3 35 the printer shows the error at power on and begins a cleaning automatically Therefore even though the printer continues to print it forcibly enters the Ink End error condition for the second time since the flag is already set in the EEPROM address for the abnormal temperature detection circuit 99 EPSON Stylus Color 900 Revision C Table 3 35 Combination which Causes the Error Nozzle Selector 1st digit of the Head ID The board is in the Sharp 0 specific setting EPSON exclusive printhead 1 For this reason if you perform the operation in an incorrect procedure such as Head replacement gt I C replacement gt Turning on the printer the printer starts monitoring the temperatures before the printhead ID on the board is replaced with a new one then shows the error consequently On the other hand if you follow the proper steps Head replacement gt Turning on the printer gt proper I C replacement with a new one the program allows a data transfer once before printing so you can overwrite the printhead ID Troubleshooting Overview 100 Revision C EPSON Stylus Color 900 4 1 Overview This chapter describes procedures for disassembling the main components of EPSON Stylus Color 900 Unless otherwise specified disassembly units or components can be reassembled by reversing the disassembly procedure Therefore no assembly
104. ecuring the right upper main shield plate to the bottom frame and another two screws securing the left upper 7 Remove four screws securing the C265 Main board onto the bottom main shield plate to the bottom frame then remove the both plates frame Two screws among the four are fixing the reinforcing plate together for the Type B interface guide Screws securing the ae A Right Upper Main Shield Plate 8 Viewing the C265 Main board from the Centronics I F connector Screws securing the side remove four small screws and remove the C265 Main board Shield Plate top screws securing the Left Upper Main Shield Plate Screws securing the C265 Main Board Shield Plate top CN15 ll 029 o mer Lo O 100 Right Upper MainShield Plate Type B I F Guide Left Upper Main Shield Plate Figure 4 8 Shield Plate Removal 1 Figure 4 9 Shield Plate Removal 2 Disassembly and Assembly Disassembly Procedures 110 EPSON Stylus Color 900 Revision C 4 2 6 C265 PSB PSE Board Removal 4 Remove two screws securing the shield plate on the C265 PSB PSE board and remove the
105. ed bit3 Reserved ge Reserved bit2 ink cleaning seq bit1 Network I F mode bit1 black CL required 0 Off 1 On bitO color CL required bit0 Auto line feed a a 43H Ink flag2 bit2 YMC cartridge changed 00H 00H O Off 1 On and cleaned 35H Panel mask bit7 Entry Self Test 00H 00H bit1 Black cartridge function bit6 Entry Hex Dump changed and cleaned bits Extended settings bitO Black cartridge bit4 Reserved changed and cleaned bit3 Reserved 44H 45H Ink counter Cb 00H 00H bit2 Cleaning 46H 47H piti Replace NG 48H 49H Ink counter Cy 00H 00H bitO Load Elect 4AH 4BH 36H Top margin 42 to 44 x 360 00H 00H 4CH 4DH Ink counter Cm 00H 00H 37H by1 360 inch 78H 78H 4EH 4FH 38H Bottom margin 1244 to 44 x 360 1EH 1EH SA a Ink counter Cc 00H 00H by 1 360 inch 39H ieee FOH FOH 54H 55H Ink counter Clm 00H 00H 3AH Page length 1244 to 44 x 360 1EH 1EH 56H 57H by 1 360 inch 3BH Py FOH FOH 58H 59H Ink counter Clc 00H 00H 3CH reserved for main 00H Aaa 3DH reserved foun 00H 5CH 5DH Ink counter RbO 00H 00H 3EH reserved for main 00H 3FH reserved for main 00H Appendix EEPROM ADDRESS MAP 178 EPSON Stylus Color 900 Revision c Table 7 19 EEPROM Address Map 7 8 Table 7 20 EEPROM Address Map 8 8 Address Explanation Settings PIT Factory Address Explanation Settings anit Factory settings settings settings set
106. erating Principles Revision C 2 2 3 Paper Load Mechanism The paper load mechanism transports paper set in the hopper in the ASF into the printer It is operated by the ASF and the pump ASF motor which drive the ASF The pump ASF motor specifications are as shown in Table 2 7 Table 2 7 Pump ASF Motor Specifications No ltems Specifications 1 Type 4 phase 48 pole PM type stepping motor 2 Drive voltage 42 VDC 5 Applied to the driver 3 Coil resistance 700 10 4 Drive mode Bipolar constant current drive mode The ASF rotates the semicircular roller once in reverse before transporting paper into the printer Along with this motion the cam in the semicircular roller pushes up the return lever The return lever then bounces up with tension spring force As the result some paper which was fallen off the hopper during the previous feeding motion is all aligned and set back in the hopper This so called paper return operation is performed for each paper feeding motion Therefore paper loading accuracy is improved See Figure 2 4 which shows how the ASF feeds paper Printer Mechanism Operating Principles 49 EPSON Stylus Color 900 Revision C After a paper loading motion is completed the semicircular roller rotates in the normal direction to load the top paper in the stack This operation is enabled by the correct phase of the gears in the ASF because the timings for the semicircular roller
107. es but the USB I F and sensors while the latter controls the printhead motors encoder and USB I F The combined IC IC8 which has a normal timer IC and EERPOM in one chip also features the printer Since the EEPROM counts ink consumption at the valuable printing its size has increased to 2 K bit 1 The valuable dot system or many valued dot system enables the printer to freely fire three different sizes of dots normal middle and small dots in one raster In other printers if the super micro dot mode is once selected through the printer driver the printers prints only in the selected mode until the current print data is completed Product Description Component Layout 39 EPSON Stylus Color 900 Revision C IC5 D RAM 1C11 PF Motor Driver OM IC2 E05B59 1012 CR Motor Driver Thermistor detects temperature of the heat sink Q5 upper Q6 lower J Charging Discharging driver for driving the black nozzles IC4 One time P CN4 CN13 O COU GNS a O E Q3 upper Q4 lower ss ba B Y Charging Discharging driver for driving the color nozzles LULL CN8 db d 2 cecccene 1C3 E05B60 IC1 CPU H8S Heat Sink IC6 CGROM Thermistor detects temperature on the printhead board 1013 upper 1C 14 lower ASF Motor Driver c46 upper IC15 lower Head pre driver IC8 Timer amp EEPROM Lithium Battery Fi
108. f not replace the 1C13 Pump ASF motor driver IC or C265 Main board NOTE The GND can be output by placing the probe of the oscillo scope to the tapped hole in the bottom plate on the board with a screw Overview 94 Revision C EPSON Stylus Color 900 Table 3 27 ASF Solenoid does not Operate Table 3 28 ASF Solenoid does not Operate continued Step Check Point Action Step Check Point Action 1 Is the fuse F4 Place the probes of the tester on the both terminals of 3 Is the transistor Place the probe of the oscillo scope on the emittor side of open the chip fuse on the C265 Main board then check for Q9 defective the transistor Q9 on the C265 Main board then check electrical continuity The F4 is located between CN12 that voltage is always 0 VDC Then press the Load Eject and CN16 and also beside the Q9 button and check for an instant change in voltage level i F from 0 to 40 VDC if it changes correctly as described 2 Is the transistor Place the probe of the oscillo scope on the collector side above it means the Q9 is working properly The Q9 is Q8 defective of the transistor Q8 on the C265 Main board then check located beside the CN16 that 40 VDC is constantly applied Then press the Load Eject button and check if the voltage drops to 0 VDC for n Q9 an instant If it does it means the Q8 is working properly a The Q8 is located between CN12 and CN16
109. g accuracy by minimizing the motor s vibration during printing Figure 2 15 shows the CR motor driver circuit block diagram 42 42 42 42 E05B59 1C2 LB1847 1C12 CN11 ad CRIAO 1A1 1 ase A setting CRIA1 IA2 OUTA current signal CRIA2 1A3 censos Ju A3 e ty ty Phase Beetting CRIBO oe MINE El OTA CRIB1 16 patterns CRIB3 IB4 Phase CRA B CRPHAA PHASE1 42 selection signal CRPHAB PHASE2 Phase CRA B ENB permission _ CRENBA ENABLE 1 signal CRENBB ENABLE2 5 Motor sub control VREF1 VREF2 as MD signal Pane A constant p mT CR1 at chopping TA CRCTL1 CR2 DECAY signal 1 CRCTL2 MD CRCTLR DECAY1 DECAY signal 2 Not used M62383 IC17 8 D Axy Figure 2 15 CR Motor Driver Circuit Block Diagram Operating Principles Electrical Circuit Operation Principles 67 EPSON Stylus Color 900 Revision C Unlike previous EPSON ink jet printers the number of the phase excitation input ports in the motor drive IC of this printer has increased to 8 The previous micro step system used total of 4 phase excitation input signals for both phases A and B Stylus COLOR Stylus PRO series and Stylus PRO XL series are exceptional since they transfer 4 bit serial data from ASIC to the motor driver This is because the micro stepping was controlled by the software only On the other hand LB1847 enables the 4W1 2 phase excitation using the hardware and is equipped with the necessary number of input ports 8 ports for curren
110. gt e Page 105 Table 4 1 Some contents have been changed e Figure 4 4 Figure 4 17 Contents of the figures have been corrected B February 15 1999 Figure 4 13 4 15 4 16 4 24 4 25 4 39 4 40 4 41 Figure titles have been corrected e Figure 4 14 Figure title and the contents of the figure have been corrected lt Chapter 5 gt Pages from 140 through 145 Head Angular Adjustment procedure has been changed due to overall review of the section The whole book is revised The actual change is made on the following points e Chapter 4 P 115 Figure 4 18 and step 3 c March 4 1999 O E P e Chapter 5 Page 135 to 141and Page 148 The rest of the pages in this chapter only changed in page numbers e Chapter 6 and 7 changed in page numbers only Contents Product Description A A lied oivgdeen a leaded eteadicces EOR 10 SPECIFICATIONS 2i3 h2 52050 EA EAE E OEE OIER o iit 11 Printing Specificati0NS sepini raira iets praniu aaa RA UNS r nana Adat nn 11 Options and Consumable Products ccceeeeeeeeeeeeeeeeeeeteeeeeeeeeeeneeeees 14 Paper Specifications ooonoocccccnnnccccconancccnncnnnnannnncnnno aa rca ENR 15 Cut A outed ak eddies ed tin eddie A aa 15 Transparency Glossy Paper ce cceeeeeeeceeeeeeeeeeeeeeeeeeeeeeeseneeeeeeeeeaeens 15 Envelope ccoo ce 15 O cats cave heer dint aetna a N oheae 15 Self Adhesive Sheets 0 cceccssccceeesceceeeeeceeeeeeeeaaeeeseeeaaeeeeseeaaeeneneen 15
111. gularly In the screen Figure 5 27 select End 146 EPSON Stylus Color 900 Revision C 32 The following screen appears Resetting hardware now 610 gt Don t use any commands until the CR s motion is completed lt Figure 5 30 Head Angular Adjustment End Sequence 33 The printer turns off in an instant This sequence called Hardware Reset takes approximately 30 seconds to execute During this sequence the programs shows countdown and the message indicating restriction on any action using the program and generating commands NOTE The Hardware Reset performed here which initializes the carriage location management is considered very important because there is a possibility that the print position changes slightly during the adjustment 34 The screen returns to Head Angular Adjustment Initial screen Figure 5 14 and the next adjustment can be selected Adjustment Adjustments 147 EPSON Stylus Color 900 Revision C 5 2 5 Bi Directional Adjustment This section describes how to make Bi Directional Adjustment This adjustment must be made under the following conditions 1 The printhead has been replaced removed 2 Vertical lines are not aligned A print problem has occurred 3 C265 Main Board has been replaced 4 When the ROM version TEEO12A 01B or 01C is replaced with the revised one TEE01D or newer See Section 5 2 3 for details NOTE Bi Directional Adjust
112. gure 1 11 C265 Main Board Product Description Component Layout 40 EPSON Stylus Color 900 1 7 3 C265 PSB PSE Board There are two types of the C265 power supply board as listed below C265 PSB board For America Japan part of South east Asia m C265 PSE board The rest of all regions MSDS Never touch the heat sink radiation plate on the Q1 f with your bare hands as it is not insulated Otherwise you will get an electrical shock The C265 PSB PSE board uses the switching regulator system Since the C265 PSB PSE board uses the power switch on the secondary side it keeps applying voltage to the primary side across the T1 Especially the heat sink to which the Q1 is attached can not be insulated due to the circuits formation Therefore to avoid an electrical shock be careful not to touch the heat sink and other metallic parts simultaneously while troubleshooting Product Description Revision C 1C51 5V regulator Danger D51 Diodey 1 Tans Q1 FET CN3 CN2 C11 for smoothing C1 Noise cut capacitor D55 Diode L1 Nose cut reactance Figure 1 12 C265 PSB PSE Board 41 Component Layout EPSON Stylus Color 900 Revision C 1 7 4 C265 PNL Board The C265 panel board is composed of the three switches and four LEDs Figure 1 13 C265 PNL Board Product Description 1 7 5 C265 Relay Board The C265 relay board is installed to relay the following with connectors O Power for driving motors and senso
113. gure below Table 3 17 Isolating the Faulty Part on the Power Supply Board Step Check Point Action Q 1 Is the panel FFC The power switch for this printer is in the secondary L1 reverse side disconnected from the side Therefore if the FFC does not transfer connector on the panel signals the printer does not operate despite the board power supply board and the main board are properly connected 2 Is the panel FFC This printer uses the power switch on the disconnected from the secondary side Therefore if the FFC does not CN1 side mm CN2 side Uh connector black 12 transfer signals the printer does not operate pin on the relay board despite the power supply board and the main board 8 Is the transformer T1 Referring to the figure below check if the are properly connected power supply board disconnected are used to apply power to the main board are properly connected Troubleshooting Overview broken transformer is disconnected between the poles Try every combination in each group marked with a 3 Is the connector The reason is the same as above blue box disconnected from the The panel control FFCs are connected via 1 CN15 CN15 on the main on the main board gt 2 Relay board gt 3 Control board Panel 4 Has the fuse F1 on Check if the line in the F1 located beside the CN1 ATALA side the power supply board on the power supply board has blown
114. he FFC once and connect them again then run a print heck chec Rubber part of the cap 5 Has the valve cap fallen If a strong impact is applied to the valve cap in off the cap unit it may fall off Therefore check that the cap is securely attached to the cap unit Without this part ink can not be absorbed Check that the connectors are not connected aslant NOTE Before reinstalling the FFCs be sure to remove the frame in red in the figure secured to the lower case with two screws Otherwise proper continuity may not be guaranteed despite the FFCs look connected without slant Troubleshooting Overview 96 EPSON Stylus Color 900 Revision C Table 3 31 Cleaning does not Solve the Print Problem continued Table 3 32 Cleaning does not Solve the Print Problem continued Step Check Point Action Step Check Point Action 6 Is any ink tube Referring to the figure below check the following 8 Is the head driver If you see the C265 Main board from the heat sink disconnected from points transistor defective side the following four power transistors can be the cap unit Connection between two tubes and the bottom of found the cap Remove the whole cap from the unit to Q3 and Q4 Outputs the common voltage for the check the connection row A and B black nozzle rows Connection of each tube and the separator Q5 and Q6 Outputs the common voltage for the Connection of one tube at the b
115. he cleaner head drive roller and a compression spring is set between the cleaner head and the cleaner drive roller Since the cleaner head has a protrusion marked with a red circle in Figure 2 8 on it on the roller side it moves back and forth along with the roller rotation However if the roller rotates faster than the specific level it rotates alone because tension of the compression spring does not work any more Figure 2 9 Printer Mechanism Operating Principles Ink Absorption Process Revision C 55 EPSON Stylus Color 900 Revision C 2 3 Electrical Circuit Operation Principles 2 3 1 C265 PSB PSE Power Supply Board This section explains the operating principles of the C265 PSB PSE board in order The Stylus Color 900 consists of the following circuit boards O C265 main board AC power supply voltage is supplied from the AC power socket Then O C265 PSB PSE board the fuse F1 limits the incoming current of the AC voltage to avoid O C265 Panel Board damaging the C265 main board and C265 PSB PSE board On the other hand TH1 and TH2 serve to convert surplus input voltage into heat energy The input voltage is next input to the RLC parallel circuit a filter circuit for higher harmonics absorption This operation keeps the higher harmonics in the AC power out of the printer and also prevents leakage of higher harmonics generated in the printer After noise is removed the AC voltage goes through the full wave
116. he Bi D Adjustment Pattern Print Variable 2 Dot Bi d Da Normal Dot Single Double etc IT 8 ABi D adjustment pattern includes items shown in the sample in PEE rid ae BR PILI Figure 5 34 in the right column ES 9 While the Bi D adjustment pattern is running the screen returns to the Bi Directional Adjustment screen Figure 5 31 10 Among the patterns for each of 3 items select the value for the most closely aligned vertical line Note if none of the lines is completely aligned you can select the value for the most closely aligned pattern The centre value for the next adjustment pattern print will be replaced accordingly Normal Dot Bi d Data 2 Figure 5 34 Bi D Adjustment Pattern Sample Adjustment Adjustments 149 EPSON Stylus Color 900 Revision C 11 Select Adjust in the screen 12 The following screen appears fas 7 0 el El sfe al NEUE Normal Dot Figure 5 35 Bi D Adjustment Mode Selection Screen 13 Select Variable 1 Dot If the center value for the Variable 1 Dot pattern has the completely aligned lines you can select Variable 2 Dot instead 14 The
117. he EEPROM If you need to check the adjustment results perform the following operation 1 Market Destination Check Press the ESC key twice and select Market Destination Check from the menu 2 Print A 4 Pattern Press the ESC key three times and select Print A4 Pattern from SERVICE ITEMS NOTE Bi Directional Adjustment is the last adjustment to be made on the program Never perform adjustments such as Head Angular Adjustment and Head Actuator Voltage ID Input after Bi Directional Adjustment Refer to Table 5 1 for details Adjustment Adjustments 152 EPSON Stylus Color 900 Revision C 5 2 6 Printhead Cleaning Using the Program 5 The following screen appears The service program for the Stylus Color 900 has the cleaning function The command is always executed with the most powerful cleaning mode Note the printer is not equipped with the dummy cleaning called CL3 Therefore you can attempt to solve the nozzle clogging problem by pressing the Cleaning button on the control panel repeatedly ollel El sa A lt lt Powerful cleaning CL2 will be done in this mode gt gt 1 Referring to Section 5 2 1 perform the preliminary operation Head cleaning perform 2 Select Maintenance from the main adjustment menu 3 The following screen appears Figure 5 43 Cleaning Screen 6 Press the Enter key Ink Charge Flag Reset Indication of the counter value for
118. he NPN contact transistor is good the findings should be as shown under the figure Note the NPN connection transistor is shown in the circuit diagram as described below Step 1 FIR 5 2 Step 1 On Step 2 Off Step 3 Off Step 4 On Troubleshooting Overview 91 EPSON Stylus Color 900 Revision C 3 1 3 Isolating the Faulty Part according to the Phenomenon Refer to this section if you could not solve the problem in Section 3 1 1 Table 3 22 Cooling Fan does not Rotate or Section 3 1 2 or need more information to isolate the cause Step Check Point Action according to the exhibited phenomenon The contents mostly cover the E y a 1 Is the fuse F6 Place the probes of the tester on the both terminals of problems relating to the C265 Main board and their remedies open the chip fuse F6 on the C265 Main board Then EN check for electrical continuity F6 is located beside the Table 3 21 Phenomena Exhibited Q7 which is in front of the cooling fan connector No Phenomenon Exhibited Table to refer to CN13 4 The cooling fan does not rotate Table 3 22 2 Is the transistor Q7 is beside the connector CN13 for the cooling fan Q7 defective Since the three terminals for the base emittor and collector are not marked try every pattern below to check for electrical continuity Be sure to test with the Note the cooling fan does not constantly rotate Refer to Chapter 2 Section 2 3 7 2 CR motor d
119. ial data and the latch signal are all transferred The PZT drive pulse radiates large heat since it is driven with the basic drive frequency of 32 4 K Hz and also has such a large amount of drive elements as 480 PZT Therefore the abnormal temperature detection circuit is included in the nozzle selector to detect temperature of each nozzle so that heat radiation stays under the maximum level If the circuit detects abnormally high temperature in any nozzle row the printer regards the condition as an accidental printing malfunction such as dot missing and it automatically enters the cleaning CL2 the most powerful cleaning cycle See the sensor descriptions in Chapter 2 for the operations after this cleaning The printhead also has the thermistor in it to subtly change the voltage level of the drive pulse in accordance with the temperature condition in use Printer Mechanism Operating Principles 48 EPSON Stylus Color 900 Nozzle configuration See Figure 2 3 for the nozzle configuration of the Stylus Color 900 Row A Black 1 Row B Black 2 Row C Magenta Row D Cyan Row E Yellow Figure 2 3 Nozzle Configuration As shown in the figure the black nozzles are aligned at 360 dpi vertical and the color nozzles are aligned at 180 dpi In the color printing mode only B row among 2 black nozzle rows is used and the other row A is not used The same mechanism is used for the microweave printing Op
120. icing such as screw drivers away from the gears The PE sensor in the paper feed mechanism is used to check the following 1 During paper loading checks if the leading edge of the paper from the ASF is correctly transported 2 Checks if the paper loaded meets the specifications 3 Checks if the paper is properly ejected after printing is over 4 Checks if paper is jamming Operating Principles See Table 2 12 and Table 2 13 for the PE sensor specifications and the PE sensor switch mode respectively Table 2 12 PE Sensor Specifications No Item Specifications Transmission type photoelectric transfer system 5 VDC 5 Applied to the driver 1 Type 2 Drive voltage 3 Collector resistance 30 VDC or less Table 2 13 PE Sensor Switch Mode Paper installation Output voltage Switch mode Not installed Open 0 7 VDC or less Installed Closed 2 4 VDC or more Actuator PE sensor Notched roller Sub roller PF drive gear Paper ejection PF roller powdery coated roller _ PF motor pinion Figure 2 5 Paper Feed Mechanism Printer Mechanism Operating Principles 51 EPSON Stylus Color 900 2 2 5 Pump ASF Switch Mechanism The pump ASF switch mechanism switches the motor s torque between the paper loading and the pump system sides The pump ASF motor supplies torque and a solenoid is used as switching trigger Refer to Section 2 2 3 for
121. if the printhead is driven without any ink filled in it the printhead abnormally heats up and may be damaged as the result Therefore this printer monitors and controls the temperature around the printhead more strictly than any other printers do In case the printer detects abnormal rise in head temperature during printing it generates the I C replacement command after the sequence described below 1 Detects an abnormal temperature during printing 2 Stops printing and begins a head cleaning This operation solves the nozzle clogging problem in most cases 3 Resumes printing 4 lf detects an abnormal rise in the head temperature again sets a flag and generates the I C replacement command The Ink LED comes on The printer mostly enters this sequence under the following two conditions Ink around the nozzles is severely viscous due to removal and reinstallation of the 1 C Ink is leaking from the printhead because of a large impact The temperature in the printhead actually rises abnormally when half the nozzles in any nozzle row are clogged or 48 nozzles in any 96 nozzle row are clogged Step Check Point Actions Step 3 Is the micro switch fixed If the micro switch is not properly attached the 6 improperly actuators possibly fail to touch the micro switch Is the connector green Therefore check that the micro switch is disconnected securely attached to the carriage by the hooks Connector Mic
122. in board make a note of a 22 del e ea A digit head ID 2 Referring to Section 5 2 1 perform the preliminary operation PRES 3 Select Adjustment 1 and then Head Actuator Voltage ID Input a aoe te eat eel ce Ue alcala dial J g p when you reinstall a brand new head 4 Th f II a 1 Write down the new head ID Replace the old head with a brand new head A e Tolowing screen a ears Turn on the printer I C out error will occur g pp 3 Install the brand new I C by obeying the usual I C replacement sequence Input the head ID written on the head If you mis type the head ID the program will automatically return to the input mode Continue to the head adjustment such as the Head Angular and Bi D ee Don t install a brand new I C before you turn on the printer Figure 5 8 Head ID Input Screen Adjustment Adjustments 137 EPSON Stylus Color 900 Revision C 6 The following screen appears NOTE Like ROMs mentioned in step 7 there are also new and old versions for printheads The new printheads and old printheads are defined as described below Old printhead The 22th digit is A B or C sel a el ej al E New printhead The 22th digit is D or newer Old ROM TEEO1C or older a esti r krsi Due to the diversity of versions there are total of four combinations of ROM version and printhead ID For two combinations of them Von can tra ane Guvent ROM velsioniby temavine however the progr
123. ing on the operation as shown below E During the adjustment Set to the front PG narrower E When moving the carriage away from the thickness gauge Set to the rear PG wider Set the PG lever blue to the rear PG wider Place the thickness gauge on the right side of the rib in the Front Paper Guide again Set the PG lever blue to the front PG narrower By pulling the timing belt manually move the carriage to the position where the thickness gauge is set and make sure the thickness gauge does not move Turn the right parallelism adjustment bushing upward by one notch and ensure the thickness gauge moves Return the right parallelism adjustment bushing to the previous position by turning it downward by one notch 12 Push the right parallelism adjustment bushing down from the current 21 If the results of the steps 18 la 19 are incorrect make the PG position by one notch adjustment using the left bushing again Adjustment Adjustments 159 EPSON Stylus Color 900 Revision C 22 Holding the right parallelism adjustment bushing with your hand so it does not move fasten the screw 23 Holding the left parallelism adjustment bushing with your hand so it does not move fasten the screw 24 Remove the thickness gauge 25 If the linear scale is dislocated set it through the photo sensor at the back of the carriage 26 Move the carriage to the right 27 Install the upper case Adjustment Adjustments
124. ints continued No Lubricating Point Amount 16 U shape groves on the right and left edges of G 26 1 x 5 mm top and the Paper Guide Front Unit bottom 17 The surface of the Shaft CR O 8 NOTE Do not apply lubricant to the Shaft CR Support 18 Shaft hole of the Combination Gear 29 6 G 26 01 x 5 mm 29 6 19 The areas where the Combination Gear G 26 01 x 5 mm 29 6 29 6 and Combination Gear 15 2 23 2 come in contact with the Mounting Plate Assembly Cap NOTE Do not apply lubricant to the shaft of the Combination Gear 15 2 23 2 which joins with the hole in the Pump Assembly Hopper Assembly C Figure 6 9 Maintenance Lubrication and Adhesion 169 EPSON Stylus Color 900 Revision C Figure 6 10 Figure 6 11 UN E Shaft Pulley Driven Figure 6 12 G 26 Figure 6 14 Figure 6 13 Back of the Carriage G26 O ee Back of the Frame Guide CR Maintenance Lubrication and Adhesion 170 Revision c EPSON Stylus Color 900 7 1 Connector Summary Table shows the connector assignment of the C265 Main Board Figure 7 1 shows the cable connection of the Stylus Color 900 Table 7 1 C265 Main Board Connections
125. ion Control Panel Operation 35 EPSON Stylus Color 900 Revision C 1 5 Error Status When any of the following status occurs the printer goes in the error status and stops receiving data setting the ERROR signal in the interface to Low and Busy signal to High During this condition the printer is in non printable status Refer to Section 1 4 3 for detailed LED Panel indicator status and corresponding error types 1 5 1 Ink Out When the printer has run out the most of the ink of any color it warns of Ink Low condition and keeps printing When the printer runs out the whole ink of any color it stops printing and indicates the Ink Out error User is required to install a new ink cartridge in this state Note if an ink cartridge has been taken out it should never be used again Reinstalling the used cartridge not fully filled with ink upsets the ink level detection and may cause a serious problem in the printhead as a result fate Never use an ink cartridge that has been removed 1 5 2 Paper Out When the printer fails to load a sheet it goes into the Paper Out error condition 1 5 3 Paper Jam When the printer fails to eject a sheet it goes into the Paper Jam error condition Product Description 1 5 4 No Ink Cartridge When the printer detects that the ink cartridge has come off it goes into the No ink cartridge error 1 5 5 Maintenance Request When the total quantity of ink wasted through the cleani
126. isassembly Procedures 127 EPSON Stylus Color 900 4 2 7 15 PF Roller Removal 1 Remove the platen See Section 4 2 7 14 2 Remove the screw securing the paper support lever to the printer mechanism and remove the paper hold lever along with the stay Screw Securing the Paper Support Lever Figure 4 46 Paper Hold Lever Removal 3 From the back of the printer mechanism release the torsion springs securing the paper guides upper to release the paper guides upper Torsion Spring six springs in total Paper Guides Upper Figure 4 47 Releasing the Paper Guide Upper Disassembly and Assembly Revision C 4 Pull all the paper guides upper out to the front side of the printer mechanism paper ejection side When installing the paper guide located on the left edge HP side be sure to insert it from the rear side of the printer mechanism because it has a cutout in which the actuator for the PE sensor falls and if the paper guide is removed to the rear the actuator will be damaged 5 Remove the tension spring stretching the encoder belt from the back of the printer mechanism Tension Spring Figure 4 48 Tension Spring Removal 6 Remove two screws securing the top frame and remove the top frame Disassembly Procedures 128 EPSON Stylus Color 900 Revision C 7 Remove three screws securing the top frame two by the front
127. it 5 V line overvoltage protection circuit ZD53 in the circuit monitors the 5 V line for overcurrent In case the voltage rises to 7 V for reasons such as a defective board the circuit shuts the Q1 gate in the same process as the 42 V line overvoltage protection circuit follows Voltage drop delay circuit at power off The C265 PSB PSE board uses the secondary switch that includes the delay circuit The delay circuit allows the printer to complete the power off operation properly even though the printer is turned off while it is printing A normal power off operation by the user is monitored by the C265 main board When it detects a power off the program immediately starts the power off sequence capping the printheads and drops the power The electrolysis condenser C84 continues to operate to allow the printer to execute this proper power off sequence See the following page for the electrical circuit diagram Operating Principles Electrical Circuit Operation Principles 57 EPSON Stylus Color 900 Revision C Incoming current protection L Higher harmonics absorption LO ERTE NO aL TH2 Inrush Piers eee temperature conversion Smoothing Full wave ce Higher harmonics absorption Smoothing OGL O 5V 1 5A O 5 O PSC O 5 O 5 OGL 5V line overvoltage protection O GP a s 42V 0 8A back A 42 oo O 42 O 42 O GP y back f A rate t PC1 Comes on when abnormal Photo Coupler 42 V li
128. ither one time PROM or Mask ROM is used Specifications vary depending on the destinations as shown below lt Standard version gt e PROM size 16 M bit Table 2 15 Major Components on the C265 Main Board 2 2 Component Motor driver IC LB1847 1C11 12 A3957 1C13 14 Functions The LB1847 IC11 and 1C12 is used to drive PF motor and CR motor and enables 4W1 2 phase excitation mode for the first in EPSON line This control system called micro stepping materializes the control of the carriage vibration during printing and improvement of accuracy in paper feeding on the hardware basis The A3957 IC13 and 1C14 used to drive Pump ASF motor also supports the 4W1 2 phase excitation mode on the hardware basis but differs from the former IC in the point that the 1013 and 1C14 individually excite the phase A and B Head driver IC CXA2128 x 2 1015 16 The head driver ICs directory attached to the board consist of two separate circuits charging circuit and discharging circuit to produce trapezoidal waveform This IC creates the trapezoidal waveform by combining the signals input from the input port E05B59 IC 2 of the IC This is performed to change the characteristics and voltage levels of charging and discharging and the trapezoidal waveforms specific to normal dot print and micro dot print are produced as the result RTC9810 IC8 PROM MROM e Contents Unattached e Bus width 16
129. ive Electrical Circuit Operation Principles 75 EPSON Stylus Color 900 Revision C 2 3 8 ASF Solenoid Driver Circuit A planetary gear is used in the gear train which switches between paper feed operation from the ASF and pump operation The switching action is enabled by the solenoid See Table 2 21 and Figure 2 21 which show ASF solenoid specifications and the ASF solenoid control circuit block diagram respectively Table 2 21 ASF Solenoid Specifications No Items Specifications 1 Type Single phase DC solenoid 2 Drive voltage 42 VDC 5 E05B59 1C2 3 Coil resistance 588 Q 10 at 20 C ASF_SOL 4 Induction 0 98 N 100 gf or more Table 2 22 shows the ASIC s IC2 conditions for driving the ASF solenoid Table 2 22 Conditions for Driving the ASF Solenoid ASIC s IC2 83 pin condition Solenoid s condition Figure 2 21 ASF Solenoid Control Circuit Block Diagram High 5 VDC Inducting Low 0 VDC Non inducting Operating Principles Electrical Circuit Operation Principles 76 EPSON Stylus Color 900 Revision C 2 3 9 EEPROM Control Driver Circuit Data for various factory adjustment items is stored in the EEPROM IC7 on the C265 main board The size of the EEPROM is 2 K bit since various types of dots are available with this printer and memory allocated for the ink consumption counter is accordingly large When the printer is turned on data stored in
130. ive in printing status e ne i 1 Leaving the Paper Out LED blinking without pressing any button also generates O Panel function with power on Refer to Table 1 18 the Default setting mode 2 Not intended for users This function is used only for troubleshooting Table 1 18 Panel Function with Power On B R See the following pages for detailed information on the default setting utton Function A mode and the Printhead alignment mode Load Eject 1 Starts the status print 1 Enters the printer setting mode The Paper Out LED starts A blinking 2 Cleaning ae a Specified button must be then pressed while the LED is blinking to activate each mode See Section 1 4 2 1 Enters the special setting mode Factory use onl Load Eject E J y y Specified button must be then pressed while the Paper Out Cleaning LED is blinking to activate each mode See Section 1 4 2 2 1 The status print includes firmware version ink counter and nozzle check pattern Product Description Control Panel Operation 32 Default setting mode Some printer setting parameters can be changed by users and will be referred at the time of printer initialization The setting method is as shown below Enter the Default setting mode Select the desirable language for Usage of this mode by pressing the Cleaning button Press Load Eject button The current setting and the Usage of this mode in the selected language is p
131. ix Component Layout 180 EPSON Stylus Color 900 Revision c 8 y 298 98 i 0 Miu 5 sll reg E l 24 Uy at ae z A po n sU e onno UN ae Di on Ole at a 0 le 38 Je E ses am Df pi g oug a iL a jy ap 9 db k 20858858 i i POS Doy R 2032590 Da Figure 7 3 C265 Main Board Soldering side Appendix Component Layout 181 Revision c EPSON Stylus Color 900 00 8IE6ZOZ ASSY Appendix 1 oo My a f w gt 53 R82 a zy wo gt POO R62 red eS on 2087 350 3 A Lo z pe z s Che 2087450 TE R87 A z09 Ww gen o 287 W 42090 QL2 o R84 A A JA RBG LAA O A yer Ga 482 px E ay mn optus 2091 gt a a ones Ons 081 R72 S P SS E ze 2E S a E E ze Da z aes ul on coh Z082 Z083 2084 2085 Lt a 2 a XL 7082 5 a monet EPS ESN 8 MODEL EPS 40 EPSON S s 28 E e T L ce TF ce A l ae 2 MO A E OAZ125Vor250Y L Y EN Fl E Wa HS ma m J2 L C265PSB BOARD 3 S E 1 C265PSE BOARD E Ts El z Pp z 00 OZE6ZOZ ASSY CNI j ou TS o CAE T SALA CHK P2x ALA CMk P 2X E Figure 7 4 C265 PSB Board Figure 7 5 C265 PSE Board Component Layout 182 EPSON Stylus Color 900 Revision c SW2 Swi SWO ft MN 0 Em CNI 12 1 gt as LEDI 03 LED2 DD D C265 PNL Ma ASSY 2029322 00 CMK P2x LEDO swo Figure 7 6 C265 PNL Board Appendix Component Layout 183 EPSON Stylus Color 900 Revision c
132. ization 37 EPSON Stylus Color 900 Revision C 1 7 Component Layout 1 7 1 Printer Mechanism The printer mechanism of the Stylus Color 900 has black and color heads united in one unit which drives larger amount of nozzles 180 The main components of the Stylus Color 900 are as follows 1 Printer mechanism nozzles in total than ever Also for a new ink jet printer feature the 2 C265 Main board printer has succeeded in printing in the acceleration deceleration areas 3 C265 PSB PSE board by reading the slits on the linear scale to improve the throughput This 4 C265 panel board improvement in throughput mostly depends on the Pump ASF switching 5 C265 relay board mechanism In other printers the gear trains are switched when the trigger lever hits the mechanism along with the carriage s movement In Stylus Color 900 however the exclusive solenoid is directly attached to the mechanism instead With the solenoid which switches drive ata higher speed the printer can control high speed paper ejection system the printer bring the leading edge of the second sheet to the printing position just before ejecting the first sheet The motors equipped with the printer are CR motor PF motor and the Pump ASF Motor same as for the Stylus Color 800 Product Description Component Layout 38 EPSON Stylus Color 900 Revision C 1 7 2 C265 Main Board However the valuable dot system of this printer enables the printer to fire three different si
133. ment value is not cleared with EEPROM Initialization resetting the protection counter and specific addresses 1 Referring to Section 5 2 1 perform the preliminary operation 2 Select Adjustment 2 from the main adjustment menu Figure 5 4 then Bi Directional Adjustment 3 The following screen appears em el El aja al Adjust Check present adjustment Figure 5 31 Bi Directional Adjustment Screen Adjustment 4 Select Print the Bi D adjustment pattern in the screen 5 The following screen appears NOTE The following three items are adjusted with the Bi D Adjustment 1 Variable dot forms small middle dots 2 Variable dot forms normal dots 3 Normal dot only Print the Bi d adjustment pattern for present data Variable 1 Dot present data 2 present data present data 2 Variable 2 Dot present data 2 present data present data 2 Normal Dot present data 2 present data present data 2 Figure 5 32 Screen after Print the Bi D adjustment pattern is Selected 6 Press the Enter key 7 The following screen appears and the printer runs the Bi D adjustment pattern consequently Adjustments 148 EPSON Stylus Color 900 Revision C Variable 1 Dot Bi d Data 2 Bi d pattern is being printed out now Figure 5 33 Screen during t
134. mode respectively Operating Principles Printer Mechanism Operating Principles 46 EPSON Stylus Color 900 Revision C Table 2 4 Linear Encoder Specifications No Item Specifications 1 Type Radiative Incremental encoder module 2 Drive voltage 5 VDC 5 g Output Phase A B 2 channel digital output TTL level waveform 4 Minimum step 1 180 inch increment of the lines on the linear scale Response 20 KHz frequency The ASIC IC2 reads the linear scale increment 1 180 inch and internally divides data by 8 The read information is used to produce basic drive frequency for 2880 dpi trapezoidal waveform production If the encoder is defective or in an undetectable condition the printer generates a fatal error immediately after power on This error occurs before the carriage s home position seeking operation Beside detecting the carriage position the CRHP sensor also serves to determine whether or not the carriage is working properly If the setting signals pulses sent from the encoder do not reach the specified level while the CR is moving in the acceleration constant deceleration modes in its operative range the program consequently assumes that paper is jamming or the carriage is operating irregularly and shows the paper jam error by bringing up the LEDs of the corresponding combination The printer is equipped with 2 actuators used to detect the ink cartridges in the carriage unit
135. n Principles 63 EPSON Stylus Color 900 Revision C False firing is detected in the following conditions and the printer the more the cartridge is removed installed the more handles it as described below bubbles are formed and the printhead can not eject ink m False firing detection timing propery Ana amg OCRUN If any of the 5 channels which are monitored by the abnormal temperature detection circuit in the nozzle selector reaches 100 C the printer stops printing and automaticaly begins the cleaning cycle In this case the printer runs the most powerful cleaning cycle The particular address bit called abnormal temperature detection flag is reset at this point NH Process after detection The printer does not resume printing until the temperature around the PZT recovers to the tolerable range In case the printer detects the same abnormal condition again it indicates an ink end error to urge the user to replace the cartridge considering the following possible reasons 1 The currently installed ink cartridge is far beyond its useful life 6 months Ink in this condition does not eject properly and results in a false firing When a new cartridge is installed the problem is solved 2 The cartridge installed has been repeatedly removed and then installed again several times With this mis handling of the cartridge the ink consumption counter can not properly describe the actual remaining ink level and a false firing occurs
136. ne and abnormal operation of driver systems Also to let the motor driver IC execute its R18 107 K 42 V AAA pre Devision R20 10 K Drops to 35 V a N 4 HD64F2357 IC1 E05B59 IC2 M62383 1C17 D Axx D Axy D Ayx RST job properly the reset signal is once input to the convertor setting current production IC on the main board to stop motors in the correct sequence On the other hand the timer control is done by counting the operation of the oscillator circuit and the printer s power off time can be confirmed based on the timer at the next power on operation Also this count data is used to manage the timer for the operation such as periodical flashing during power on time as well as power off time While the printer is on the printer supplies 5 V input to Pin 7 to operate the internal oscillation circuit however when the printer is turned off the external button cell battery a lithium battery immediately starts supplying voltage 3 V to the Pin 8 21 415 3627 26 25 6 O m E05B60 IC3 2 VREF1 LB1847 IC11 VREF2 2 VREF1 LB1847 IC12 3 REF A3957 IC13 3 REF A3957 IC14 VREF2 Figure 2 12 Reset timer combined circuit Operating Principles Electrical Circuit Operation Principles 61 EPSON Stylus Color 900 Revision C Sensor circuit The sensors attached to the printer are as described in the following pages They are basically divided into 2 major parts 1
137. ne constant voltage control Voltage drop delay circuit at power off 42 V line overvoltage protection Figure 2 10 C265 PSB PSE Board Circuit Block Diagram Operating Principles Electrical Circuit Operation Principles 58 EPSON Stylus Color 900 Revision C 2 3 2 C265Main Board See Figure 2 11 for the C265 main board block diagram CN15 Sensors E05B60 IC3 Timer II IRST 74LV161284 ICQ a CN1 HD64F2357 Centronics oon E05B59 IC2 CN2 _ Type B I F SN75LBC T93C56 IC10 IC7 CN3 Mac Serial LB1847 IC11 A3957 IC13 CN4 USB LB1847 IC12 A3957 1C14 CN12 ASF motor CN13 FAN f CN8 ae CXA2128 IC15 ae ASF Solenoid a CXA2128 IC16 ee r Figure 2 11 C265 Main Board Block Diagram Operating Principles Electrical Circuit Operation Principles CN10 PF motor CN CR motor 59 EPSON Stylus Color 900 Revision C The following tables list the major components on the C265 main board and their functions Table 2 14 Major Components on the C265 Main Board 1 2 Component Functions A Hitachi H8 series CPU Performs high speed data processing running at 24 0 E05B59 IC2 CRU Mhz with an external transmitter e Bus width is 16 bit ASIC 1 e Controls all interfaces but USB E05B60 IC3 e Monitors the signal from each sensor ASIC 2 Controls printheads motors ASF solenoid cooling fan USB I F and EEPROM For PROM e
138. ng acceleration deceleration on normal paper 360 x 360 dpi only See Figure 2 1 for the printer mechanism block diagram Operating Principles Overview 44 Revision C EPSON Stylus Color 900 PF drive gear high precision gear ASF sensor for phase detection High precision pinion gt ASF cam PF motor Flashing position the 80th column side ASF drive shaft PTS encoder Paper eject sub roller ae p Paper load rollers PE Paper End sensor Black I C detection lever Color I C detection lever CR unit United printhead for black and color a Pump ASF motor Timing belt Cap ASF solenoid for switching the ae ASF pump gear trains CR motor Valve for capping Pump CRHP sensor CR guide shaft PF roller powdery coated roller Encoder belt Figure 2 1 The Stylus Color 900 Printer Mechanism Block Diagram Operating Principles Printer Mechanism Operating Principles 45 EPSON Stylus Color 900 Revision C 2 2 1 Carriage Mechanism Table 2 2 CRHP Sensor Specifications a soni F No Item Specifications As shown in Figure 2 1 the carriage unit with the printhead on it moves right and left depending on the rotational direction of the CR Carriage 1 Type Photoelectrical transfer system Pe SHARP GP1S73P2 motor Table 2 1 shows the CR motor specifications l 2 Drive voltage 5Vi5 Table 2 1 CR Motor Specifications 3 Collector resistance 30 VDC o
139. ngs and flushing has reached the limit printer indicates this error and stops printing The absorber in the printer needs to be replaced with a new one by a service person 1 5 6 Fatal Errors When the printer detects the carriage control error or CG access error it enters the fatal error condition Error Status 36 EPSON Stylus Color 900 Revision C 1 6 Printer Initialization The EPSON Stylus Color 900 is equipped with three types of initialization methods O Power on initialization The printer is initialized when it is turned on or recognizes the cold reset command remote RS command When the printer is initialized it performs the following a b Initializes the printer mechanism Clears the input data buffer Clears the print buffer Sets the default values _ WH c d O Operator initialization This printer is initialized when it is turned on again within 10 seconds after last power off or recognizes the INIT signal negative pulse of the parallel interface When printer is initialized it performs the following a Caps the printhead b Ejects a paper c Clears the input data buffer d Clears the print buffer e Sets the default values O Software initialization The ESC command also initializes the printer When the printer is initialized it performs the following a Clears the print buffer b Sets the default values Product Description Printer Initial
140. o each ore In the pump gear train condition mechanism Onthe same shaft Pressure roll left Pressure roller right Pump transmission gear Pump intermittent gear Clutch Figure 2 8 Pump Carriage Lock Head Cleaner Mechanism Operating Principles Printer Mechanism Operating Principles 54 EPSON Stylus Color 900 The steps below explain the process of driving each mechanism 1 Operating Principles The precondition for driving the pump carriage lock and head cleaner is that the pump ASF switch mechanism is switched to the pump gear train Refer to Section 2 2 6 Drive from the pump ASF motor is transmitted via 1 pump transmission gear black gt 2 pump intermittent gear black gt 3 pressure roller right pump drive roller flesh color Along the way the drive is also transmitted to the carriage lock lever The carriage lock lever is released with normal rotation of the pump ASF motor and set with reverse rotation of the motor Once the drive is transmitted to the pressure roller right all parts used to drive the pump begin to act The Stylus Color 900 has the right and left pressure rollers However since the black and color heads are included in one unit the absorption tube is split in the middle so the 2 pumps can absorb ink in the printhead See Figure 2 9 which explains the ink absorption process The cleaner head is located between the pump frame and t
141. oes not rotate Table 3 23 correct polarity The correct findings are shown under the figure 3 PF motor does not rotate Table 3 24 Soldered Step 1 Step 2 4 pump ASF motor does not rotate Table 3 25 Table 3 26 a e n e 5 ASF solenoid does not operate Table 3 27 Table 3 28 A gt A gt 6 Cleaning does not solve the print problem Table 3 29 Table 3 33 yd A 7 Ink End Error occurs after the printhead is Table 3 34 A replaced so the printhead can not be adjusted gt gt Step 1 On Step 2 Off Step 3 On Step 4 Off 3 Is the internal coil Replace the Fan unit and then check for the correct for the fan motor operation open 4 Is the C265 Main If the cause has not been isolated yet replace the board defective C265 Main board Troubleshooting Overview 92 EPSON Stylus Color 900 Revision C Table 3 23 CR Motor does not Operate Table 3 24 PF Motor does not Operate Step Check Point Action Step Check Point Action 1 Getting ready The connector used to control the CR motor is indicated 1 Getting ready The connector used to control the PF motor is indicated for inspecting in the figure below Using the oscillo scope check for the for inspecting in the figure below Using the oscillo scope check for the waveforms waveform for each phase at the indicated connector waveforms waveform for each phase output from the indi
142. oil using a tester Note the To Pin 2 GND burnt tester can be used regardless of the polarity lt Resistance 588 10 gt 10 Is the ASF sensor Check for the proper voltage in the same manner as defective described in the previous step The ASF connector 3 pin location on the relay board is also shown in 2SN the figure above The pin configuration is also the same as CRHP sensor At power on the ASF reset operation is performed and the ASF Sensor detects ASF home position Solenoid Troubleshooting Overview 89 EPSON Stylus Color 900 Revision C 3 1 2 Isolating the Faulty Part on the Power Supply Board Table 3 18 Isolating the Faulty Part on the Power Supply Board continued This section explains how to troubleshoot the following problems O The printer is turned on but the initialization is not performed and LED on the control panel do not come on Step Check Point Action 6 Is CN 5 or CN6 on the main board disconnected Check that the connectors CN5 and CN6 which are used to input power from the power supply board are properly connected O Problems after power on Be sure to perform troubleshooting in the order specified because the E i 7 Is the choke coil Viewing the reverse side of the power supply parts involved are mentioned in the disassembly procedure to facilitate broken board dhescioriha proper contintity atthe we servicing points indicated in the fi
143. or R Actuator Assembly Right PF Roller This section includes the check points and corresponding actions which Step are necessary when the Paper Jam Error constantly occurs when the 1 printer is turned on or feeding paper Be sure to follow the steps in the order described in the tables 2 NOTE If the finding for the question is Yes take the action described in the right column If No proceed to the next step 3 4 Troubleshooting Overview 83 EPSON Stylus Color 900 Revision C Table 3 7 Remedies for Paper Jam Error continued Table 3 8 Remedies for Paper Jam Error continued Step Check Points Actions Step Check Points Actions 5 Is the PE sensor Referring to Step 3 in Section 3 1 1 1 Remedies 7 Is the ASF installed Check the ASF installation at the following 2 actuator acting for Paper Out Error check the sensor condition improperly points View A and View B in the figure below improperly Is any of the paper load Is the sensor base sub rollers fixed floating improperly 6 Is the PE sensor Referring to Step 4 in Section 3 1 1 1 Remedies defective for Paper Out Error check the sensor condition Is the encoder Then verify the encoder sensor condition by defective checking the following points for proper connection and electrical continuity since checking the signal directly from the encoder is impossible 1 Connection of the connector 1 2 Connection of the
144. or voltage has been written in EEPROM 10 When the 22 digit ID has been correctly input the following 3 screens appear in sequence as shown in Figure 5 12 and the ID is registered in the printer s RAM Though the screen messages indicate that the ID has been input in the EEPROM it is actually written into the EEPROM when the printer is turned off 11 Press ESC key twice The screen returns to the sub adjustment menu screen to continue to the next adjustment Figure 5 12 22 digit ID Input Sequence Adjustment Adjustments 140 EPSON Stylus Color 900 Revision C 5 2 4 Head Angular Adjustment 3 Select Head Angular Adjustment The following screen appears This section describes how to adjust the head angular This adjustment must be made under the following conditions 1 The printhead has been removed When the printhead has been replaced Head angular adjustment 2 The head angular adjustment lever has been moved Be sure to release two screws securing the head fixing plate before moving the lever Failure to do so may damage the lever 3 CR Guide Shaft has been lubricated Notice you are required to remove the printhead before lubricating the CR guide shaft in this printer Refer to Chapter 6 Maintenance 4 CR guide shaft has been removed Figure 5 14 Head Angular Adjustment Initial Screen NOTE 4 Select Print the head angular adjustment pattern to check the Be sure to us
145. ote the only CBS Tight screw among four must be used at the rear right of the upper case Lift up the front edge of the upper case then remove the whole case by tilting it along the ASF Control Panel FFC for the Control Panel Figure 4 3 Control Panel Removal Disassembly Procedures 106 EPSON Stylus Color 900 4 2 2 Printer Mechanism Removal 1 Remove the upper case See Section 4 2 1 2 Unlock the cable clamp on the relay board then take all harnesses out of the cable holder Screws securing the Printer Mechanism cO Cable Holder Relay Board Screws securing the X Waste Ink Drain Pads Screw securing the Printer Mechanism Printhead FFCs Figure 4 4 Printer Mechanism Removal 3 Disconcert the following connectors from the relay board The connectors to be disconnected are colored red in Figure 4 5 Disassembly and Assembly Revision C amr When assembling be sure to connect the connectors properly as shown in Figure 4 5 Disassembly Procedures 19 pin FFC used to supply sensors with power and to send condition detection signals 2 pin connector for driving the solenoid Connector for ASF Connector for PF motor Connector for Pump ASF motor Connector for PE sensor Connector for CR motor Connector for CRHP Carriage Home Position sensor CRHP Sensor CR Motor Pump ASF Motor PF Motor from CN11 on the main board from CN12 on the main board from CN10 on
146. ottom of the valve row C D and E color nozzles To check if each pair transistor is working properly f 3 check the trapezoid waveform at the emittor terminal the minus pressure ee tube WW Ink absorption of the charging side Q3 and Q5 Check the semitransparent a waveform while running a print Right tube white Applying releasing Heat Sink Tr for the Tr for the black nozzles color nozzles 7 Is the FFC Remove the printhead unit from the carriage unit and y disconnected from bring the printhead surface side upward to check that the printhead two FFC is properly connected Even though no slant board connection nor disconnection is found disconnect the FFC once and install them again NOTE Frequency of waveform and voltage level p p varies if printing is performed through the driver Therefore as long as the trapezoid waveform is output the head driver IC is considered good and the printhead must be replaced in that case Troubleshooting Overview 97 EPSON Stylus Color 900 Revision C Table 3 33 Cleaning does not Solve the Print Problem continued Step 9 Check Point Is the head driving pre driver defective Action If a trapezoid waveform is not output in the previous step check all the power transistors Q3 Q6 for base waveforms Like the head transistor in Step 8 the power transistors also output trapezoid waveforms but
147. ow B Black 2 Row D Cyan IBM X24E emulation Figure 1 2 Nozzle configuration Product Description Specifications 11 EPSON Stylus Color 900 Revision C O Character tables Legal and 14 international character sets O Typeface Standard version 13 character tables PC 860 Portuguese PC 437 US Standard Europe PC 863 Canadian French Bit map LQ font EPSON Roman EPSON Sans Serif EPSON Courier EPSON Prestige 10 CPI 12 CPI 15CPI Proportional 10 CPI 12 CPI 15CPI Proportional 10 CPI 12 CPI 15CPI 10 CPI 12 CPI 15CPI Italic table PC 850 Multilingual PC 861 Icelandic PC 865 Nordic Abicomp BRASCII Roman 8 EPSON Script 10 CPI 12 CPI 15CPI ISO Latin 1 PC 858 Scaleable font ISO 8859 15 EPSON Roman 10 5 pt 8 pt 32 pt every 2 pt es EPSON Sans Serif 10 5 pt 8 pt 32 pt every 2 pt NE SENG ie ion RAI tanies EPSON Roman T 10 5 pt 8 pt 32 pt every 2 pt Italic table PC437 PC437 Greek EPSON Sans Serif H 10 5 pt 8 pt 32 pt every 2 pt POSSO PORSE Beeee Each Typeface has 4 variations as the following example of PC855 PC857 PC860 EPSON Roman PC861 PC865 PC866 f PC869 MAZOWIA Code MJK EPSON Roman normal ISO 8859 7 ISO Latin 1T Bulgaria EPSON Roman bold PC774 Estonia ISO 8859 2 EPSON Roman italic PC866 LAT PC866 UKR PC AR864 EPSON Roman bold italic PC APTEC PC708 PC720 ipa Hebrew7 Hebrew8 PC860 e ied 1 3 which lists the character tables and available Abicomp BRASCII Roman 8 yP
148. p Down arrow keys Figure 5 38 Adjustment Value Input Screen Variable 2 20 As the Up Down Arrow key is pressed the value shown in blue in the figure increases decreases So you can select the desirable value NOTE Regardless of the value you have input the center value selected value in the next Bi D pattern sample will be 0 The value in the range from 34 to 34 can be input Figure 5 40 Adjustment Value Input Screen Normal Dot 25 As the Up Down Arrow key is pressed the value shown in blue in the figure increases decreases So you can select the desirable value 21 When the desirable value is selected press the Enter key The following screen appears NOTE Regardless of the value you have input the center value selected value in the next Bi D pattern sample will be 0 The value in the range from 34 to 34 can be input As the Normal Dot data has been written in EEPROM 26 When the desirable value is selected press the Enter key Figure 5 39 Screen after the Adjustment Value has been Written Adjustment Adjustments 151 EPSON Stylus Color 900 Revision C 27 The following screen appears As the variable 1 Dot data has been written in EEPROM Figure 5 41 Screen after the Adjustment Value has been Written 28 To execute the adjustments press the ESC key 5 times The printer turns off and back on in an instant and the adjustment values are stored in t
149. phase Fast absorption Semi fast absorption Fast feed 2 2 phase drive 1 720 0 035 mm 1 2 phase drive Micro absorption 1 1440 0 018 mm W1 2 phase drive Not used 1 2880 0 009 mm Normal absorption 2W1 2 phase drive a 1 5760 0 004 mm Constant drive 4W1 2 phase drive Slow feed Slow absorption 1 11520 0 004 mm Operating Principles 2 3 6 Printhead Driver Circuit The printhead driver circuit consists of 2 circuits the common voltage production circuit a trapezoid waveform production circuit on the C265 main board and nozzle selector on the printhead The pre driver CXA2128 IC15 16 produces trapezoid waveform and the transistors Q3 Q6 output it Unlike previous products data serial data is independently transferred to each nozzle row to enable reduction in data latch time required to form one dot while nozzle selection is performed by ASIC which sends serial data directly to the nozzle selector on the printhead synchronizing with the clock signal A block diagram and the circuit diagram for the nozzle selector are not included in this manual The printhead driver circuit block diagram is shown in Figure 2 18 Electrical Circuit Operation Principles 72 EPSON Stylus Color 900 Revision C CXA2128 IC15 42 VCC45 vecas 2 NPNB FB Charging discharging circuit for black nozzles Head temperature CPU IC1 THM detection circuit ANODE1 AN
150. problem as a result 18 Press the Enter key in the screen Figure 5 25 19 The printer runs the Head Angular Adjustment Pattern The following screen appears Figure 5 25 Prompt to Move the Angular Adjustment Lever 17 1 At first set the angular lever to the center position As the center value is marked with the protrusion it can be easily found 17 2 Push the color I C from the front side to eliminate tolerance by Do not eject a paper until you ve printed out 5 patterns i i And select out the best pattern and lever state using a fine driver of tweezers 17 3 Gently tighten the right side screw at first then gently tighten the left side screw Figure 5 27 Prompt to Move the Angular Adjustment Lever Angular Lever Center position E E 20 Select Re Adjustment in the screen Figure 5 27 wer YQ As Figure 5 26 Setup for the Head Angular Adjustment Lever A Adjustment Adjustments 145 EPSON Stylus Color 900 Revision C 21 The screen automatically advances to the screen shown in Figure 5 28 e el sj5 Al In case of 1st print In case of others 2nd 3rd 4th 5th 1 Loosen both screws 2 Obey above steps 1 to 4 Figure 5 28 Re adjustment Screen Then move down forward the angular lever one step from the center position after you loosen the two screws Angular Lever Center position One notch down Figure 5 29 Moving the Head Adjustment Lever
151. production date pe oO O Storage temperature e Storage 20 C 40 C within a month at 40 C 2 Packing storage 30 C 40 C within a month at 40 C E Transit 30 C 60 C within 120 hours at 60 C and within a month at 40 C Lo O Dimensions 54 0 mm W x 67 4 mm D x 41 8 mm H NOTES 1 Do not refill the cartridge It is a consumable item 2 Do not used the ink cartridge whose ink life has expired 3 Ink will be frozen below 4 C To use ink that is frozen let it defrost for at least 3 hours at room temperature 52 5 mm Rib area Figure 1 6 Color Ink Cartridge Product Description Specifications 20 EPSON Stylus Color 900 Revision C 1 2 6 Electrical Specifications 1 2 7 Environmental Condition 120V version O Temperature Operating 10 to 35 C See Figure 1 7 Non operating 20 to 60 C 2 O Rated voltage AC120V 1 month at 40 C O Input voltage range AC99 132V 120 hours at 60 C O Rated frequency range 50 60 Hz al Humidity Operating 20 80 RH 2 See Figure 1 7 O Input frequency range 49 5 60 5 Hz Non operating 5 85 RH 1 2 O Rated current 0 4A Maximum 0 5A O Power consumption Approx 18W ISO IEC 10561 Letter pattern Humidity Energy Star compliant RH 80 O Insulation Resistance 10 M ohms min between AC line and chassis DC 500 V O Dielectric strength AC1000 V rms 1 minute or AC1200 Vrms 55 Guaranteed 1 second between AC line
152. r less No Item Specifications 1 Motor Type 4 phase 200 pole HB type stepping motor a Table 2 3 CRHP Sensor Switch Mode 2 Drive voltage 42 VDC 5 Applied to the driver CR Position Switch mode Sensor output 3 Coil resistance 5 80 10 Within the CRHP 4 Drive mode Bipolar constant current drive range Open 0 7 VDC or less Off the CRHP range Close 2 4 VDC or more The CR unit position is always memorized and controlled by the CRHP Carriage Home Position sensor This sensor confirms the CR position a If this sensor is defective or does not work it does not detect the to renew the memory at the following timing carriage while the carriage is in the home position seek mode In this E When power is turned on off case the printer cuts off electricity to the CR motor and shows a fatal m When a head cleaning operation including initial ink charge is uae performed Like the Stylus Pro5000 the Stylus color 900 also uses a linear encoder m When the printer returns to a ready status because the printer to obtain secure carriage movement and accurate print timing The has executed print job or receives no data for one second or linear encoder reads slits on the encoder belt linear scale above the more timing belt to control the carriage See Table 2 4 for the linear encoder specifications See Table 2 2 and Table 2 3 which show the CRHP sensor specifications and CRHP sensor switch
153. rinted Select the menu by pressing the Cleaning button Press the Load Eject button to enter the value selection phase of the selected menu Select the value by pressing the Load Eject button Press the Cleaning button The printer memorizes the selected setting value and returns the indication to the main menu Repeat the steps from 4 to 7 The menu selection will return to the first menu after the last menu selection is over Turn the printer off The new settings are stored in the non volatile memory Table 1 20 Default Setting Menu Roman Sans Serif Courier Prestige Script Roman non T Sans Serif H Draft Pitch 10 cpi 12 cpi 15 cpi 17 cpi 20 cpi Proportional EPSON Stylus Color 900 Revision C Table 1 21 Default Setting Menu continued Print direction Auto Bi D Uni D Loading Position 3 mm 8 5 mm Others Product Description I F mode Auto Parallel Serial USB Optional Auto F wait mode 10 seconds 30 seconds This mode is for the network environment only Network I F mode Off Used in a usual environment On Used in the network environment Parallel I F transfer rate Fast Normal Software ESC P2 IBM X24E Auto CR IBM mode only On Off A G M IBM mode only On Off Auto line feed On Off O slash 0 9 Character tables Italic USA Italic France Italic Germany lt Standard version gt Italic UK Italic Denmark Italic Sweden
154. rinting by applying voltage to the PZT integrated piezoelectric element inside the printhead With the voltage applied to the PZT the cavity a tank filled with ink is pressed by the PZT and ejects ink from nozzles as the result Unlikely to the illustration the actual number of the PZT included in the printhead in this printer is 480 the same number as nozzles and each PZT is independently driven The steps below describes how the printing mechanism works 1 Head drive pulse form command signal is output from the ASIC after the printer is turned on Operating Principles Revision C Receiving the signal the Pre driver outputs the head drive pulse signal to the driver If no printing data is sent pulse output from the driver is not applied to the PZT in the printhead because the transistor on the nozzle selector is not on If any printing data is sent from a PC 5 serial data 3 for Y M and C and 2 for 2 rows of black are sent to the nozzle selector from the ASIC Each serial data consists of 96 data since each row is composed of 96 nozzles When these data is all transferred a Latch signal is output from the ASIC to the nozzle selector after specified period of time When the Latch signal is sent a PZT signal is applied to the base side of the transistor via the latch circuit in the nozzle selector Head drive pulse constantly output from the driver is then applied to the PZT by the pulse output after a set of ser
155. ro Switches 7 Hooks 4 Is the connector green Remove the printhead and check if the connector 3 pin disconnected form green 3 pin is disconnected from the small the small board which is board at the bottom of the printhead directly attached to the Note The green 4 pin is irrelevant as it is for the head surface side encoder 5 Is the micro switch 1 Keeping the left micro switch pressed down defective place the probes of the tester to the middle and left pins to check for electrical continuity 2 Keeping the right micro switch pressed down place the probes of the tester to the middle and right pins to check for electrical continuity Step1 Step2 Push 1 Push 2 Troubleshooting Overview 86 EPSON Stylus Color 900 Revision C 3 1 1 4 Remedies for the Maintenance Error While the printer is in this error condition it disables all operations including data communication except for the panel operation specified to clear the error Therefore follow the steps described in Table 3 12 to solve the problem Table 3 12 Remedies for the Maintenance Error Actions Correct LED condition 1 Turn the printer on while pressing the The Paper Out LED is blinking Load Eject and the Cleaning buttons and the Paper Out LED starts blinking Blinks for three seconds 2 While the Paper Out LED is blinking for The following three red LEDs three seconds press the Cleaning button are blinking Ink Out LED for ten s
156. rounding Plate Eject Using a brush lubricate right and left sides of Iza Fi 6 9 the Hopper ASSY C xamm ICAO 8 2 contact areas Roller Assembly Eject and G 26 1 x 2 mm Grounding Plate Eject Lubricate the inner gear of the Combination 1x1 Fi 6 10 gear 14 4 24 X Emm IqUie os 9 The teeth of the right and left Gear 27 s G 26 01mm x 1 4 of the circle Lubricate the surface of the bearing part the round cut of the Bushing 12 located at the 01 x 10 mm Figure 6 11 10 2 points on the shaft in the Lever Assembly G 26 01 x 2 mm right end of the printer mechanism Release Cam Lubricate the Shaft Pulley Driven 01x1mm Figure 6 12 NOTE Do not apply lubricant to the roller surface Lubricate the back of the Frame Guide CR 1 x 150 mm Figure 6 13 11 Oil Pad O 8 0 7 0 75 cc Refer to Section 6 2 1 Lubricating the Carriage Guide Shaft Table 6 4 Lubrication Point Using the O 8 12 A hole in the Frame Assembly Middle Left G 26 01 x 3 mm Lubricating Point Amount Ref figure 13 Roller shaft in the Lever Assembly Roller G 26 01 x 1 mm Release Right Apply oil to the Oil Pad 3 Before lubricating observe the CAUTION in 0 7 0 75cc Figure 6 14 14 Pin on the Frame Middle Right G 26 91 x 3 mm Section 6 2 well 15 Narrow end of the Shaft Arm Lifter G 26 1 x 2 mm Lubrication and Adhesion 168 EPSON Stylus Color 900 Revision C Table 6 6 Lubrication Po
157. rrect combination actuator acting release the actuator and check if the actuator reassembly or replace the ASF improperly automatically returns to its original position with the Is the sensor tension of the spring base floating Referring to the illustration above check that the sensor base is securely installed to the frame If the sensor base is floating or installed insecurely instal it securely Troubleshooting Overview 82 Revision C EPSON Stylus Color 900 3 1 1 2 Remedies for the Paper Jam Error Table 3 6 Remedies for Paper Jam Error Check Points Is the paper length beyond the specifications Actions Instruct the user that the Paper Jam Error occurs if paper whose length is beyond the specifications is used Is the encoder located at the back of the CR covered with dust Check if there is any dust or paper debris lodged between the parts of the encoder a transmission type photo sensor located at the back of the carriage Linear Scale Encoder belt Carriage Unit Is the encoder belt nearly dislocated from the encoder Referring to the illustration above check if the encoder belt is nearly dislocated from the encoder Is the PE sensor always on because of the paper debris or dust accumulated over the sensor Viewing the PE sensor from the front check that the actuator is the correct position the actuator falls in the cutout without any paper uu PE Sens
158. rring to Chapter 6 Maintenance perform the followings 1 Clean the carriage shaft surface 2 Perform the preliminary lubrication 3 Oil the newly installed pad 4 Install the carriage shaft to the carriage unit NOTE Make sure the printhead has been removed before supplying oil to the new oil pad Reinstall the printhead to the carriage Perform Parallelism adjustment Enter the I C replacement sequence to install a new I C and make sure it is completed lt Purposes gt 1 To avoid counter mismatching 2 To preliminarily avoid head hot error which would occur in Step 7 For details refer to Chapter 2 Cooling Fan Driver Circuit Perform Ink Charge Flag Reset using the service program and then turn the printer off In 10 seconds turn the printer back on and the Initial Ink Charge begins automatically Perform Head Angular Adjustment using the service program Perform Bi Directional Adjustment using the service program 1 Printhead 1 Install a new I C in the I C replacement sequence 3 replacement user performable and make suer it is completed lt Purposes gt 1 To avoid counter mis matching 2 To preliminarily avoid head hot error which would occur in Step 3 For details refer to Chapter 2 Sensor descriptions 2 Perform Ink Charge Flag Reset using the service program and then turn the printer off In 10 seconds turn the printer ba
159. rs O Control signals If any of the connectors is connected to a wrong position during assembly the printer shows a fatal error at power on Carriage home position CRHP sensor Carriage CR Motor Pump ASF Motor Paper Feed PF Motor Connector from the CN11 on the C265 Main Board Connector from the CN12 on the C265 Main Board Connector from the CN10 on the C265 Main Board Connector from the CN16 on the C265 Main Board Solenoid Switches ASF PUMP mechanism Connector from the CN15 on the C265 Main Board Control Panel ASF Sensor PE Sensor Figure 1 14 C265 Relay Board Component Layout 42 EPSON Stylus Color 900 Revision C 2 1 Overview 2 2 Printer Mechanism Operating Principles This chapter describes the operating principles of the printer The EPSON Stylus Color 900 uses a new type of printhead It has black mechanism and electrical circuits and color heads united in one unit which includes a total of 480 nozzles 192 nozzles for black 96 nozzles x 2 and 96 nozzles for each color This printhead enables the printer to print 3 lines by one pass at 10 cpi printing Also new ASF pump switching mechanism offers higher throughput with quick feeding motion at continuous printing by combining the trigger solenoid and independent pump ASF motor Production of PTS signal using the encoder belt also enables the printer to improve printing accuracy detect paper jam in the CR operational range and print duri
160. s 52 EPSON Stylus Color 900 Switching to the pump gear train Figure 2 7 shows the gear condition after switching to the pump gear Revision C The steps below show how the gears move to switch from the ASF gear train to the pump gear train train is completed 7 Inthe ASF gear train condition the gears 3 and 4 are in mesh 8 The pump ASF motor rotates reverse CCW ASF transmission gear l 9 The planetary gear set tries to move down but the solenoid prevents it 10 The solenoid comes on allowing the whole planetary gear set to move down At this point the gear 3 does not rotate but the motor pinion gear and the gear 2 rotate in mesh 11 The gears 3 and 4 come in mesh and the connection to the O pump gear train is fixed when a corner of the solenoid is aligned PUMP ASF motor with the notch in the planetary gear set 12 The gear 4 meshes with the pump transmission gear in the printer mechanism to perform CR lock and pump drive operations Solenoid Planetary gear set Pump transmission gear Figure 2 7 Switching to the Pump Gear Train Operating Principles Printer Mechanism Operating Principles 53 EPSON Stylus Color 900 Revision C 2 2 6 Pump Carriage Lock Head Cleaner Mechanism The pump mechanism operates in accordance with the carriage lock and head cleaner control mechanisms Figure 2 8 illustrates the o ds process of torque transmission from the pump ASF motor t
161. s overheated The TH1 works to detect this kind of unexpected rise in temperature at an early stage and stop printing AN6 Pin 111 Four power transistors Q3 Q6 used for trapezoidal waveform production are directly attached with screws to the large heat sink a radiation plate on the main board Since the printhead supported by the Stylus Color 900 supports very high driving frequency 28 8 KHz higher than ever and a large amount of PZT radiation from the discharging transistor used for trapezoidal waveform production is huge Therefore the cooling fan on the board forces out heat around the radiation plate A thermistor fixed on the radiation plate sends signals to the AN6 port of the CPU to allow the CPU to manage the cooling fan s on off operation AN5 Pin 110 The electrical signal input to this port is a temperature signal sent from the thermistor included in the printhead unit The function of this thermistor is same as before to precisely detect temperatures around the printhead and feed back information to the C265 main board Based on the fed back information the printer manages subtle change in the voltage level of the head drive trapezoidal waveform and also can eject the correct amount of ink as it is aimed at any temperature O AN4 ANO Pins 1 2 9 10 4 The nozzle selector IC is attached inside the printhead It determines which nozzle is used to fire ink according to serial data sent from the ASIC 1C2
162. s show various causes of the error and ASF Frame corresponding solutions Be sure to follow the steps correctly to solve Left the problems NOTE If the finding for the question is Yes take the action described in the right column If No proceed to the next step Table 3 13 Remedies for Fatal Error Step Check Point Actions 1 Has the CRHP Check the CRHP sensor visually Connect the sensor come off the connector properly Make sure the connector is printer mechanism connected to the indicated position on the relay 4 Has the coil for the Since the CR motor is controlled by the Bipolar frame board Also check that there is no dust nor paper CR motor burnt system measure the coil resistance using the tester Is the connector for debris between the sensor parts as shown below the CRHP sensor lt Resistance 5 8 Q 10 gt P Connector 1 disconnected x f Note Be Step 1 S sure to IN measure the Q Connector 2 Mechanism i Leica resistance at f two points Tare To Pin 1 shown in the figure below E To Pin 2 ss Step 2 67 e Q CR Motor To Pin 4 eB 2 Has the encoder belt Referring to step 2 in Section 3 1 2 2 check that the come off parad e set pt E Pa sala Also 5 Has the coil forthe Measure the internal coil resistance of the PF motor a at the sensor Is free from dust and paper PF motor burnt in the same manner as for the CR motor
163. s to release the cartridge clamps from the carriage unit Disassembly and Assembly Screws securing the Head Fixing Lever e Y Joints blue FFC Holder Cartridge Clamp a Ink Cartridge Sensor Cover Y NA ON NS Joints black Figure 4 14 Printhead Removal 1 5 Release two joints black in the cartridge clamps from the carriage unit and remove the cartridge clamps 6 Remove the compression spring on the left side of the carriage unit 7 Releasing three hooks securing the cover protecting 2 ink cartridge sensors in the carriage unit remove the cover 8 Remove the FFC holder on the right edge of the carriage unit by pulling it upward 112 Disassembly Procedures Revision C EPSON Stylus Color 900 9 Remove two screws securing the head fixing lever which is fixing the printhead by the bottom of the carriage unit then pull out the suspension plate to the right 10 Remove two actuators for the ink cartridge sensors Note the black one is for the black cartridge and the white one is for the color cartridge Actuators Figure 4 15 Removal of the I C Detection Actuator 11 Disconnect the green connector for the ink cartridge sensor from the carriage unit Disassembly and Assembly 12 Lifting up the printhead unit disconnect 2 FFCs and the connector green 4 pin for the ink cartridge sensor T
164. s white banding color banding dot missing or improper ink ejection bad alignment the printhead needs to be cleaned The cleaning methods equipped with the Stylus Color 900 are as shown in Figure 6 1 If printing results get worse all the more you repeat cleaning it is assumed that the ink cartridge has run out the ink and the ink consumption counter is upset due to a user s mishandling the ink cartridge In this case enter the ink cartridge replacement sequence and replace the installed ink cartridge with a new one Maintenance Cleaning Method Level 1 Cleaning using the control panel Cleaning using the program y Press the Cleaning Button Revision C Level 2 Perform cleaning with the forcible CL2 Perform cleaning according to the CL counter Run a self test No Is the _ problem solved o p Select Cleaning in the program Level 3 Cleaning using the Initial Ink Charge Reset the initial ink charge flag in the program CL2 powerful is always used for the cleaning Turn the printer off Run a self test Turn the printer back on to perform Initial Ink Charge Is the problem solved Run a self test No Is the problem solved Figure 6 1 Printhead Cleaning Options Overview 163
165. sembling the ASF Disassembly Procedures 120 EPSON Stylus Color 900 4 2 7 6 ASF Sensor Removal 1 Remove the ASF unit See Section 4 2 7 5 2 Viewing the ASF unit from the front remove the bushing left fixed at the left end of the shaft Bushing Fixing the Shaft on the Left N LD Roller Shaft lt q Figure 4 32 Left Bushing Removal 3 Release the hook securing the detection wheel and push the detection wheel to remove S Fixing Tab Detection Wheel LD Roller Shaft Figure 4 33 Detection Wheel Removal Disassembly and Assembly Revision C 4 Disconnect the connector from the ASF sensor 5 Using tweezers release one of the hooks securing the ASF sensor and remove the ASF sensor ASF Frame Left Side view ASF HP Sensor Figure 4 34 ASF Sensor Removal Disassembly Procedures 121 EPSON Stylus Color 900 Revision C 4 2 7 7 CRHP Sensor Removal 4 2 7 8 PE Sensor Removal 1 Remove the printer mechanism See Section 4 2 2 1 Remove the printer mechanism See Section 4 2 2 2 Pushing two of the four hooks securing the CRHP sensor remove 2 Release the hook securing the PE sensor at the back of the printer the CRHP sensor mechanism and remove the PE sensor Hooks Attaching the Paper End Sensor CRHP Sensor Location holes Figure 4 36 PE Sensor Removal Figure 4 35 CRHP Sensor Removal Disassembly and Assembly Disassembl
166. sembly Paper Loading Assembly Hooks Fixing the LD Roller Assembly Figure 4 27 LD Roller Assembly Removal Never touch the rubber part of the LD roller assembly with your bare hands Disassembly Procedures 118 EPSON Stylus Color 900 parts are correctly mounted onto the paper loading assembly One Torsion spring One extension spring One compression spring One rod spring E Before assembling the ASF ensure the following four POINT Extension Spring Rod Spring Paper Loading Assembly Torsion Spring Compression Spring 1 66 Figure 4 28 Parts in Paper Loading Assembly EH When installing the paper loading assembly set the edge whose narrow portion is longer than the other to the left Revision C EH When installing the LD roller shaft with the both paper loading assemblies on it into the ASF frame shift the right paper loading assembly to the right edge of the ASF frame then fix it by aligning the groove in the back of the paper loading assembly with the rail ribs on the inner side of the ASF frame Fix the left paper loading assembly also by aligning it with the rail ribs on the inner side of the ASF frame The left paper loading assembly however moves freely from left to right or vice versa ASF Frame ASF Frame Ribs Paper Loading Assembly Figure 4 29 LD Roller Shaft Installation Disassembly and Assembly Disassembly Procedures 119 Revision C EPSON Styl
167. side the battery and cause burning or explosion E Do not dismantle the battery The gas inside the battery may hurt your throat Leakage burning or explosion may also result m Do not install the battery in the wrong direction This may cause burning or explosion 102 EPSON Stylus Color 900 Revision C Danger of explosion if the battery is incorrectly replaced Replace only with the same or equivalent type recommended by the manufacturer Dispose of used batteries according to government laws and regulations Risque d explosion si la pile est remplac e incorrectment Ne remplacer que par une pile du m me type ou d un type quivalent recommand par le fabricant Eliminer les piles d charg es selon les lois et les regles de s curit en vigueur m Never remove the ink cartridge from the carriage T unless the manual specifies to do so m When transporting the printer after the ink cartridge has been installed be sure to pack the printer for transport without removing the ink cartridge m Use only recommended tools for disassembling assembling or adjusting the printer Apply lubricants and adhesives as specified See Chapter 6 for details E Make adjustments specified when you disassemble the printer See Chapter 4 for details Disassembly and Assembly Overview 103 EPSON Stylus Color 900 Revision C 4 2 Disassembly Procedures The flowchart below shows procedures for disassembly START
168. stment screen Figure 5 4 3 The following screen appears Figure 5 6 Market Destination Check Selection Screen 6 Press the Enter key again Head Actuator Voltage ID Input 7 The following screen appears The screen enables you to check the selection made in Section 5 2 1 Step 6 The following figure is a sample screen when the NLSP version for EDG is selected Figure 5 5 Sub Adjustment Screen 4 Move the cursor to Market Destination Check and press the Enter key Adjustment Adjustments 136 EPSON Stylus Color 900 Revision C 5 2 3 Head Actuator Voltage Input la al al ej A This section describes how to input Head ID Perform this operation under the following conditions 1 The printhead has been replaced 2 The C265 Main board has been replaced Market Destination is World NLSP 3 When the ROM version TEE012A 01B or 01C is replaced with the revised one TEEO1D or newer NOTE E After replacing the printhead be sure to install a new ink cartridge in the I C replacement sequence before inputting the Head ID m After replacing the printhead if you install the I C before turning on the printer the next power on may cause the Head Hot Error Panel Indication Ink Out Error and the printer loses all controls by the PC in that error condition Figure 5 7 Head ID Input Check Selection Screen 5 Select Input data 1 Before replacing the printhead or ma
169. t setting signals Among these input ports 4 ports are allocated to each phase A and B Therefore 16 types of current setting data can be constantly sent to the driver IC The LB1847 controls the micro stepping system by exciting the corresponding phase based on the combinations of the setting signals sent from the ASIC Table 2 16 shows the excitation modes used for the CR motor and their usage Table 2 16 CR Motor Excitation Mode and Usage Excitation mode Usage Minimum step 2 2 phase drive LQ print mode 1 120 0 212 mm 1 2 phase drive Not used 1 240 0 106 mm Sort skipping W1 2 phase drive 1 480 0 053 mm SLQ print mode Wini 2W1 2 phase drive PY 1 960 0 026 mm Capping Moving from the 4W1 2 phase drive capping position 1 1920 0 013 mm Uncapping Operating Principles Electrical Circuit Operation Principles 68 EPSON Stylus Color 900 Revision C 2 3 4 PF Motor Driver Circuit Motor drive exclusive IC LB1847 1C11 enables 4W1 2 phase excitation on the hardware basis A stepping motor is used for the PF motor to move the carriage accurately and also to improve printing accuracy by minimizing the motor s vibration during printing Figure 2 16 shows the PF motor driver circuit block diagram 42 42 42 42 E05B59 IC2 LB1847 IC11 140 25 Phase A setting ad 139 24 current signa 138 23 e E COS SU ES Prase agro priet ha 5 A 16 patterns Bie 136 x e ee a IO A 14
170. t tb gt lt _ 1next gt tsetup BUSY E lt tready lt tbusy gt ACKNLG E lt _ reply gt lt tack gt lt tnbusy gt Figure 1 8 Data Transmission Timing Interface 23 Table 1 9 Data Transmission Timing Table 1 11 Signal level for TTL Compatible EPSON Stylus Color 900 Revision C Parameter Minimum Maximum IEEE 1284 level 1 device tsetup 500ns Parameters Minimum Maximum COndition thold 500ns VOH 5 5V tstb 500ns VOL 0 5V tready 0 IOH 0 32mA VOH 2 4V tbusy 500ns IOL 12mA VOL 0 4V tt out 120ns CO 50pF tt in 200ns VIH 2 0V treply 0 VIL 0 8V tack 500ns 10us IIH 0 32mA VIH 2 0V inbusy 0 IIL 12mA VIL 0 8V tnext 0 Cl 50pF NOTE tt out shows the rise and fall time of every output signal tt in shows the rise and fall time of every input signal Typical time of tack is shown in Table 1 10 A LOW logic level on the Logic H signal is as follows 2 0 V or less when the printer is turned off 3 0 V or more when the printer is turned on The receiver provides an impedance equivalent to 7 5 K to Table 1 10 Typical Time of Tack ground Parallel Interface Mode TypicaliTimeof Tack See Table 1 12 which shows the connector pin assignment and signals High speed 1 us for the forward channel of the parallel interface Normal speed 3 us Product Description In
171. terface 24 EPSON Stylus Color 900 Revision C Table 1 12 Parallel I F Forward Channel Pin No Signal Name Paid In Out Functional Description 1 STROBE 19 l The strobe pulse Read in of data is performed at the falling edge of this pulse 2 DATAO 20 l 3 DATA1 21 g DATA2 22 The DATAO through DATA7 signals represent data bits 0 to 7 respectively Each 5 DATA3 23 signal is at high level when data is logical 1 and low level when data is logical 0 6 DATA4 24 7 DATA5 25 8 DATA6 26 9 DATA7 27 10 ACKNLG 28 O This signal is a negative pulse indicating that the printer can again accept data 11 BUSY 29 O A high signal indicates that the printer cannot receive data 12 PE 28 O A high signal indicates paper out error 13 SLCT 28 O Always at high level when the printer is powered on 14 AFXT 30 Not used 31 ANIT 30 The falling edge of a negative pulse or a low signal on this line causes the printer to initialize Minimum 50 us pulse is necessary 32 ERROR 29 O A low signal indicates printer error condition 36 SLIN 30 l Not used 18 Logic H O Pulled up to 5V via 3 9K ohm resistor 35 5V O Pulled up to 5V via 3 9K ohm resistor 17 Chassis GND Chassis GND ae GND Signal GND 15 34 NC Not connected In and Out refers to the direction of the signal as viewed from the printer Product Description Interface 25 EPSON
172. th paper debris or dust Maintenance Blink Blink Blink Blink 5 The PE sensor actuator is not acting properly Error The sensor base is not fixed properly Fatal Error Blink On On Blink 6 The PE sensor is defective The encoder is defective oo ga 7 The ASF is not installed properly NOTE means the LED is not affected by the error condition The paper load sub roller is not fixed properly Troubleshooting Overview 80 EPSON Stylus Color 900 Revision C Table 3 3 Error Condition and the Possible Causes continued No Error Condition Possible Causes 3 NO IC or Ink Out 1 The counter is not showing the actual remaining ink Error level Refer to Section 2 Ink cartridge sensor actuator is not acting properly 3 1 1 3 3 The micro switch is not mounted correctly The connector green is disconnected 4 The connector green 3 pin on the small board directly attached to the printhead surface side is disconnected Note the connector green 4 pin is irrelevant as it is for the encoder 5 The micro switch is defective 6 The value for the ink consumption counter in the EEPROM is destroyed 7 Ink cartridge replace command is generated because an abnormal temperature is detected 4 Maintenance Usual waste ink over flow is requested Error Note this error can be cleared by the special function Refer to Section through the control panel operation only 3 1 1 4 5 Fatal Error 1 The
173. the Waste Ink Pad Fan Check 7 To run the cleaning again press the ESC key once to return to the main maintenance menu and select Head Cleaning Figure 5 42 Main maintenance Menu Screen 4 Select Head Cleaning Adjustment Adjustments 153 EPSON Stylus Color 900 Revision C 5 2 7 Initial Ink Charge 6 Select Yes This section describes how to perform Initial Ink Charge It must be 7 The following screen appears performed under the following conditions 1 C265 Main Board has been replaced 2 The printhead has been removed Be sure to perform Ink Cartridge Replacement Sequence before performing Initial Ink Charge 3 Nozzles are badly clogged Cleaning using the program and control panel has been done but the nozzles are still clogged It takes about 88 seconds 1 It is advisable that the currently installed ink cartridges be replaced with new ones If ink runs out during the operation Initial Ink charge begins again when a new I C is installed 2 Referring to Section 5 2 1 perform the preliminary operation Figure 5 45 Message during Ink Charge Flag Reset Operation 3 Select Maintenance from the main adjustment menu 8 Turn the printer off 4 Select Ink Charge Flag Reset 9 Leave the printer as it is for 10 seconds 10 Turn the printer back on The printer performs Initialization and then 5 The following screen appears os Initial Ink Charge in
174. the pump ASF motor specifications Figure 2 6 shows how the pump ASF mechanism works when switching to the ASF gear train Switching to the ASF gear train Reduction gear ASF transmission gear Planetary gear set Pump ASF motor Solenoid Pump transmission gear Figure 2 6 Switching Operation to the ASF Gear Train Operating Principles Revision C Figure 2 6 shows the gear condition after switching to the ASF is completed The steps below describe how the gears move to switch from pump gear train to the ASF gear train 1 Inthe pump gear train condition the gear 3 in the planetary gear set and the pump transmission gear are in mesh 2 The pump ASF motor rotates in the normal direction CW 3 The whole planetary gear set tries to move up but the solenoid suppresses it 4 The solenoid comes on allowing the whole planetary gear set to move up At this point the gear 3 does not rotate but the motor pinion gear and gear 2 rotate in mesh 5 The gears 3 and 4 come in mesh and connection to the ASF gear train is fixed when a corner of the solenoid is aligned with the notch in the planetary gear set 6 Then the gears 4 and 5 are meshed The gear 5 is connected to the ASF drive gear in the printer mechanism to rotate the roller in the ASF reverse for paper return mechanism Refer to Section 2 2 3 for the paper return mechanism Printer Mechanism Operating Principle
175. tings 5EH 5FH Ink counter RyO 00H 00H 86H Temperature at Bi D 00H adjustment refer to 62H 63H Power off time 00H 00H 2 87H Temperature at Bi D 00H 64H 65H CL time 00H 00H 2 adjustment refer to EEPROM 17H 66H 67H accumulated printing 00H 00H time 88H reserved 00H 68H 69H reserved for ink 00H 2 89H reserved 00H z system 8AH Head TG ID 0 Sharp 1 SEC 00H 1 6AH 6BH Printer ID Strings 22 00H 00H 8BH reserved 00H E 6CH 6DH 6EH 6FH 8CH 8DH Total count of Paper 00H 00H 70H 71H 8EH 8FH through 72H 73H 74H 75H 90H 91H Ink counter Rb80 00H 00H 76H 77H 92H 93H_ Ink counter Ry80 00H 00H 78H 79H 7AH 7BH 94H 95H Ink counter A80 00H 00H UR E 96H 97H Total count of CR 00H 00H 98H 99H seek Bon Rasewene OFM E 9AH 9BH reserved 00H 81H 5AH 9CH 9DH 9EH 9FH 82H Ink end by Head 00H 00H temperature NOTE 83H P2 00H 00H 1 Adjusted at factory 84H P1 00H 00H 2 Initialized after panel initialization is performed 85H Temperature at Bi D 00H 00H 3 Initialized after initialization of the ink overflow counter in EEPROM is performed adjustment refer to EEPROM 15H 2 3 See NOTE at the end of the section Appendix EEPROM ADDRESS MAP 179 Revision c EPSON Stylus Color 900 7 3 Component Layout 2 20 o w wo id m N Figure 7 2 C265 Main Board Component side Append
176. tional Adjustment using the replacement service program 7 Program ROM 1 Input a 21 digit ID in Head Actuator Voltage ID replacement Input using the service program 2 Perform Bi Directional Adjustment using the service program 1 When the ROM revision TEEO1A 01B or 01C is repalced with the revised one TEEO1D or newer NOTE Installing a ROM version TEEO1D or newer in place of the older version version TEEO1A 01B 01C will change the output waveform control for ink firing For this reason you are required to re input the head ID and perform Bi D adjustment whenever you have replaced the ROM version TEEO1A 01B or 01C with the revised one revision TEEO1D or newer Adjustment Overview 133 EPSON Stylus Color 900 Revision C 5 2 Adjustments This section describes the procedure for each adjustment Be sure to observe the CAUTION and tables in Section 5 1 1 before starting adjustments 5 2 1 Preliminary Operation Perform the preliminary operation which is required prior to actual adjustment operation by following the steps below 1 Connect the PC and printer with PRIF4 2 Turn the printer on 3 Launch the service program SC900 EXE attached to the service manual for the Stylus Color 900 4 The following screen appears lt gt lt gt lt gt Service Program boot process lt gt lt gt lt gt Figure 5 1 Screen after Start up Seq
177. tment items and perform them in the correct order Failure to do so may directly affect to print quality adversely In this printer the head angle adjustment can be done without removing the upper case However since the head fixing plated is installed with two screws observe the instruction in this manual to perform the adjustment properly The C language used in the service program only applies to the PCs which run DOS V Therefore be sure to run DOS V to use the service program since If other types of PCs such as 98 series or the one which does not support bidirectional communication system are used the program does not run properly and adjustments can not be made When performing Initial Ink Charge forcibly be sure to have a new ink cartridge ready Before clearing the waste ink pad counters using the service program make sure the waste ink pads have been replaced in advance Lack of this operation may cause the ink to leak from the lower case 131 EPSON Stylus Color 900 Revision C Table 5 1 Actions Taken and Corresponding Adjustments in Order No Actions taken Step Corresponding adjustment required No Actions taken CR shaft replacement or cleaning Table 5 2 continued Actions Taken and Corresponding Adjustments in Order Step Corresponding adjustment required 1 Referring to Chapter 6 Maintenance remove the oil pad from the carriage Refe
178. to the initial protection counter screen Figure 5 46 Adjustment Adjustments 156 EPSON Stylus Color 900 Revision C 5 2 9 Fan Check This program enables you to check the fan s operational condition In the Stylus Color 900 the fan does not necessarily rotate when the printer is turned on Therefore if the Head Hot Error indication on the panel Ink Out Error occurs frequently the fan must be checked for its condition e el 5 5 a 1 Referring to Section 5 2 1 perform the preliminary operation 2 Select Fan Check from the main maintenance menu 3 The following screen appears Figure 5 51 Screen after No is Selected due to Fan s Malfunction Figure 5 50 Screen after Fan Check is Selected 4 As the screen Figure 5 50 appears the cooling fan starts rotating If the fan is rotating properly select Yes and the fan stops rotating 5 If No is selected because the fan does not rotate the following screen appears In this case refer to the Service Manual Chapter 3 Troubleshooting Fan does not rotate as the message prompts Adjustment Adjustments 157 EPSON Stylus Color 900 Revision C 5 2 10 Paper Gap Adjustment 2 Install dummy cartridges empty cartridges and close the both clamps Paper Gap Adjustment is performed to provide a proper gap between the printhead surface and paper surface It must be made under the 3 Set the PG lever blue
179. ttached onto the printhead board With this circuit the temperature of each nozzle row five rows in total can be independently monitored Refer to Chapter 2 Section 2 3 2 Troubleshooting Overview Once the abnormal temperature detection circuit is active the printer stops printing and starts a forcible cleaning This operation cleans the clogged nozzles and the ink inside the printhead flow properly as a result At this point the printer sets the flag in the address for the abnormal temperature detection circuit in the EEPROM to record the first abnormal temperature error The printer resumes printing with the data transferred If the printer detects an abnormally high temperature again the printer regards it as the second abnormal temperature error and enters Ink End Error condition The printer makes this judgement to avoid following two problems NH Since the I C has been repeatedly removed and reinstalled the printer fails to evaluate the remaining ink level properly and leaves the I C in an empty condition NH Since the I C has been repeatedly removed and reinstalled the ink inside gets stale and can not absorb bubbles and viscous ink into itself specifically the nozzle selectors 5 rows in total used in the mass produced Stylus Color 900 are purchased from either of the following two vendors EPSON or Sharp Their ICs slightly differ in the feed back voltage Therefore if the installed printhead has the nozzle sel
180. tuator is pushed released by the leading rear edge of the paper ASF sensor Various parts in the ASF are engaged in the phase that is designed to feed paper at the approariate timing If the timing is wrong mis match occurs between paper feeding by the ASF and paper transportation for printing and non feeding or paper jam will occur Therefore this printer monitors the sensor condition at power on and before and after paper is fed ejected according to the pump ASF motor s roational distance Power on off detection Unlike primary side switch type products ASIC E05B60 IC3 on the C265 main board is used to monitor the power on off operation instead of any sensor When the power switch on the control panel is turned off the change from 5 V to ground level is detected at the Pin 33 of the IC3 and the program starts the power off sequence with this change Power used during the sequence is supplied by the electrolysis condenser C84 in the voltage drop delay circuit in the secondary side of the C265 PSB PSE board The electrolysis condenser continues to supply power until all electric charge inside is completely discharged Electrical Circuit Operation Principles 66 EPSON Stylus Color 900 Revision C 2 3 3 CR Motor Driver Circuit An exclusive motor drive IC LB1847 IC12 enables 4W1 2 phase excitation on the hardware basis A micro stepping motor is used for the CR motor to move the carriage accurately and also to improve printin
181. ubrication with O8 18 Perform Head Angular Adjustment See Chapter 5 Section 5 2 4 19 Perform Bi Directional Adjustment See Chapter 5 Section 5 2 5 10 Install the other new oil pad to the specified position at the back of the carriage Maintenance Lubrication and Adhesion 167 EPSON Stylus Color 900 Revision C Table 6 2 Oil Applied to the Stylus Color 900 Table 6 5 Lubrication Points Maintenance Type Part name Content Part code Availability No Lubricating Point Amount Grease G 26 409 B702600001 EPSON exclusive 1 The shaft in the Frame Assembly DE Right G 26 01 x 10 mm Oil 0 8 40g 1019753 EPSON exclusive 2 The teeth of the Gear 25 8 G 26 61mm x 1 3 of the circle NOTE No adhesion is used in the Stylus Color 900 3 The shaft in the Frame Assembly DE Left G 26 01 x 10 mm 4 The teeth of the smaller gear in the G 26 E i Combination Gear 12 26 1mm x 1 3 of the circle Table 6 3 Lubrication Points Using G 26 5 12 points on the Paper Guide Front G 26 01 x 2 mm Lubricating Point Amount Ref figure 6 4 points in the Grounding Plate Paper Eject G 26 01 x 2 mm Using a brush lubricate the whole inner surface of the round cutout in the right side of 1x1mm Figure 6 8 7 2 contact areas between Roller G 26 01 x 2 mm the Frame ASF B Assembly Paper Eject Rear and G
182. uence Adjustment 5 If the indicated model name is Stylus Color 900 only press Enter key NOTE m f we OEM this product in future there will be a possibility that more model names are added to the option In this case be sure to select the model name you are dealing with correctly E The command required to write adjustment value for each adjustment includes a model unique parameter which is called R code The purpose of selecting the model name is to define the parameter which is specific to the model 6 The following screen appears lt gt lt gt lt gt Service Program boot process lt gt lt gt lt gt Figure 5 2 Destination Selection Screen 7 From the option in screen Figure 5 2 select the destination which applies to the model on which you are making adjustments then press Enter Adjustments 134 EPSON Stylus Color 900 Revision C NOTE NOTE The purpose of the operation in Step 7 are If Get Check this model name is selected the printer writes the i value selected in Step 5 into the EEPROM then begins the m 7o select CG NLSP or STD following routine to read the data 1 Resets the Hardware 2 m To initialize various settings user selectable settings Returns to the idles state 3 Reads the model name For this i reason the printer takes 25 30 seconds to read data Since the service program for the Stylus Color 900 shows the countdown to inform the service person of the period
183. ugh ink is remaining in the cartridge but the printer shows the Ink low or Ink end condition and can not continue to print 2 Ink has run out but the printer continues to print and starts false firing which damages the printhead Explain the situation to the user well and replace the I C with a new one 2 Is the ink cartridge Turn the both actuators eight and left manually and sensor actuator check that they properly push the micro switches acting improperly Then also check that the actuators return to their normal conditions shown in the figure below automatically Actuator 1 Actuator 2 Troubleshooting Overview 85 Revision C EPSON Stylus Color 900 Table 3 10 Remedies for No I C and Ink Out Errors continued Table 3 11 Remedies for No I C and Ink Out Errors continued Check Point Is data in the EEPROM destroyed Actions If the address for the ink consumption information in the EEPROM is garbled and the printer shows the Ink Out Ink End error constantly the printer sets the interface signal BUSY to High and stops communication with any other peripheral devices Therefore it is effective to replace the I C with a new one to forcibly overwrite the address with OOH Is the abnormal temperature detection circuit working Since the Stylus Color 900 drives a large number of PZT with a high drive frequency
184. us Color 900 ar E When installing the hopper assembly into the ASF FONT frame with the paper loading assemblies and LD roller assemblies mounted on it set the straight end one of the ends of each spring is bent straight facing upward Then hook the straight end to the frame as shown in the top figure below After setting the assembly insert tweezers through the cutout in the back of the ASF frame to release the straight end of the compression spring as shown in the bottom figure below Compression Spring 1 66 Le E a Hooks in the Frame Cutout in the back of the ASF Frame up MIS Straight End of the O Compression Spring 1 66 AY Figure 4 30 Hopper Assembly Installation Disassembly and Assembly Be sure to fix both right and left pegs on the ASF frame securely into the sockets in the hopper assembly When installing the detection wheel onto the left end of the LD roller shaft align the protruding portion of the LD roller shaft with the concave portion of the detection wheel Ensure that the left frame of the left paper loading assembly fits correctly into the groove in the left part of the left edge guide in the hopper assembly Make sure the bushing fixing the left hopper release lever by the left part of the shaft is attached to the correct position as shown in the figure below Hopper Assembly Guide Left Frame in the Bushing Fixing the Shaft f Left Paper Loading Assembly Figure 4 31 As
185. ut Sheet See Figure 1 3 and Table 1 7 for the printable area for cut sheets PW LM gt RM lt gt A TM Printable area PL LM Left Margine RM Right Margine BM TM Top Margine J BM Bottom Margine PW Paper Width Paper Length m Figure 1 3 Printable Area for Cut Sheets Product Description Table 1 7 Minimum margin for Raster Graphics Mode Character Mode Paper Left Margin Right Margin Top Margin Bottom Margin Size Minimum Minimum Minimum Minimum AA 3 mm 0 12 3mm 0 12 3mm 0 12 pd eh A5 3 mm 0 12 3 mm 0 12 3 mm 0 12 eee Aap Letter 3 mm 0 12 dd cae 3 mm 0 12 a B5 3 mm 0 12 3mm 0 12 3mm 0 12 see n Legal 3 mm 0 12 i dl eee 3 mm 0 12 ee en Half Letter 3 mm 0 12 3mm 0 12 3mm 0 12 pa ee Executive 3mm 0 12 3mm 0 12 3mm 0 12 pe eae For Raster Graphics mode 2 For Character mode 3 The minimum bottom margin is reduced to 3 mm when paper dimension is defined by using the command Otherwise the minimum bottom margin remains 14 mm Note the extra printing area with the bottom margin of 3 mm is not a guaranteed area Specifications 17 EPSON Stylus Color 900 Revision C O EnvelopeSee Table 1 8 and Figure 1 4 which show the minimum margin and printable area for envelopes respectively Table 1 8 Minimum Margin for
186. ve gear Therefore if the PF roller drive gear has been removed it must not be used again Neglecting this may cause a printer malfunction When installing a new PF roller drive gear be sure to push it intensively by its center area not forcing a push by its edge Do not push the edge nor surface of the gear Center area PF Roller Drive Gear Figure 4 19 PF Roller Driver Gear Installation 3 Remove three screws securing the PF motor to the printer mechanism and remove the PF motor Disassembly Procedures PF motor pinion gear as well as the PF roller drive roller is a high precision gear Therefore be careful not to damage the gear by hitting it by the frame edges When installing the PF motor be sure not to touch the pinion gear surface with a screw driver 115 EPSON Stylus Color 900 Revision C 4 2 7 4 Pump ASF Motor and Solenoid Removal 4 2 7 5 ASF Unit Removal 1 Remove the printer mechanism See Section 4 2 2 1 Remove the DE subassembly frame See Section 4 2 7 4 2 When removing the solenoid remove one screw securing the 2 Inserting tweezers from the inner side release the joint for the ASF solenoid to the DE subassembly frame and remove the solenoid drive gear and the ASF drive shaft to remove the ASF drive gear To remove the pump ASF motor remove three screws securing the DE subassembly frame to the back of the printer mechanism then 3 Remove two screws securing the ASF unit remove
187. ve ID 00H 41 1 enable 26H Interface selection 0 Auto 00H 00H 2 12H Head actuator rank ID for lwC 00H 41 1 Parallel 13H Head actuator rank ID for lwM 00H 41 2 Serial 14H reserved 00H a poe 4 Option 1 986 NOTE attheeng orhe section 1 2 See NOTE at the end of the section Appendix EEPROM ADDRESS MAP 176 EPSON Stylus Color 900 Revision c Table 7 16 EEPROM Address Map 4 8 Table 7 15 EEPROM Address Map 3 8 Address Explanation Settings GPIT Factory Address Explanati Settings OPIT Factory settings settings on settings settings 27H Interface time out 0 to 255 OAH OAH 30H Font 0 Roman 1 Sans Serif 00H 02H by second value of O 2 Courier 3 Prestige means 10 seconds 4 Script 10 Roman T 28H Compatibility speed 0 Fast 00H 00H 11 Sans Serif H_ 7 Draft 1 Slow 31H Pitch 0 10cpi 1 12cpi 00H 00H 2 Special 1 2 15cpi 3 17cpi 3 Special 2 4 20cpi 5 Proportional 29H ECP speed A 0 Fast 00H 00H 32H Print 0 Bi D 02H 02H 1 Slow direction 1 Uni D 2AH IEEE1284 4 for 0 Auto 00H 00H contro 2 Auto Parallel 1 On 33H CG table 0 Italic U S A 1 Italic France 08H 08H 2 Off 2 Italic Germany 3 Italic U K 2BH I F Control flags bitt ECP mode 00H 00H 4 Italic Denmark 5 Italic Sweden 0 Off 1 On B 6 Italic Italy 7 Italic Spain bit0 IEEE1284 mode 8 PC 437 9 PC 437 Greek 0 On 1 Off C 10 PC 850 11 PC 860 r 12 PC 863
188. ximally Dry cloth Figure 6 4 Small Syringe Figure 6 2 Cleaning the Carriage Guide Shaft Be sure to use a small diameter syringe to minimize 4 Remove the Oil Pad a felt pad from the back of the carriage unit T the tolerance Small syringe allows you to see pushed amount stroke more clearly Maintenance Lubrication and Adhesion 166 EPSON Stylus Color 900 Revision C 7 Get 2 new oil pads 11 Using the same syringe used in Step 8 supply O8 0 7 to 0 75 cc to the installed oil pad 8 Toone of the new oil pads supply O8 0 5 cc using the small syringe Supply O8 0 5 cc to the oil pad Figure 6 7 Supplying Oil to the Oil Pad 2 Figure 6 5 Supplying Olto the OI Pad 1 12 Install the carriage guide shaft to the carriage unit then to the printer i main body See Chapter 4 Section 4 2 7 10 9 Using the oiled side of the pad step 8 lubricate the carriage guide shaft surface thoroughly 13 Install the printhead See Chapter 4 Section 4 2 7 1 Oil Pad already oiled with O8 0 5 cc 14 Perform Paper Gap Adjustment See Chapter 5 Section 5 2 10 15 Turn the printer on without the ink cartridges installed to cause the Ink Cartridge Out Error 16 Using the Load Eject button run the Ink Cartridge Replacement Sequence and install new ink cartridges 17 Using the service program perform Initial Ink Charge See Chapter 5 Section 5 2 7 Figure 6 6 Preliminary L
189. y Procedures 122 EPSON Stylus Color 900 Revision C 4 2 7 9 Encoder Belt Sensor Removal between the flags for the photo sensor attached to the 2 Using your hand push the fixing lever holding the encoder belt by back of the carriage unit Failure to do so will bring a the left end to the right then remove the encoder belt when the fatal error at power on encoder belt is released enough 1 Remove the printer mechanism See Section 4 2 2 fe When installing the encoder belt be sure to place it Linear Scale Fixing Lever Encoder Belt Encoder Belt Linear Scale Carriage Unit Encoder Figure 4 38 Positioning the Encoder Belt Figure 4 37 Encoder Belt Removal Disassembly and Assembly Disassembly Procedures 123 EPSON Stylus Color 900 4 2 7 10 Carriage Unit Removal 1 Remove the printer mechanism See Section 4 2 2 2 Remove the encoder belt See Section 4 2 7 9 3 Remove the tension spring from the belt pulley holder Torsion Spring Pulley Holder Figure 4 39 Belt Tension Spring Removal 4 Push the belt pulley holder to the right HP side to fit the holder in the cutout in the left frame then push out the belt pulley holder to the front 5 Remove the spring fixing the paper thickness adjusting lever with tension Disassembly and Assembly Revision C 6 Release the hook securing the paper thickness adjusting lever to the printer mechanism then push the paper thickness
190. zes of dots in one raster and ink jet specific The main features of the C265 Main board are as follows adverse conditions such as uneven printing and white banding are improved as a result 1 IEEE1284 compliant ECP mode is available The C265 Main board is also equipped with a CG ROM which deals Type B I F is available with DOS users The CG ROM attachment condition and size are as shown in Table 1 24 2 Mac serial I F is available at 900 K bps 1 8 M bps 3 6M bps Table 1 24 Relation between P ROM and CG ROM 3 USB full speed is available at 12 M bps without the hub Destination P ROM fore 10 4 All motors CR motor Pump ASF motor and PF motor are Standard version 16 M TEEO1X Not installed controlled with the micro step system using up to 4W1 2 phase OS 16 M TEEO1X 16M M160B16XA excitation mode and current attenuation mode First Slow Mixed anesDecey NOTE The X in the table represents the version 5 Intensive temperature control of the new type of the printhead operates the cooling fan using the thermistors and the abnormal temperature detection circuit on the printhead board H8S2357 a CPU which is the hub of the C265 Main board has an internal flash memory with the size of 128 KB Since the CPU runs with 24 MHz it can send print data efficiently for a high throughput The C265 Main board has two independent exclusive ASICs ASIC1 and ASIC2 The former controls all interfac

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