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6. E The strobe pulse Read in of data is 1 STROBE 19 l performed at the falling edge of this pulse The DATAO through DATA7 signals represent data bits 0 to 7 respectively 2 9 DATAO 7 20 27 Each signal is at high level when data is logical 1 and low level when data is logical 0 10 ACKNLG 28 O This signal is a negative pulse indicating that the printer can again accept data 14 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 The falling edge of a negative pulse or a 31 FINIT 30 low signal on this line causes the printer to initialize Minimum 50 us pulse is necessary 32 JERROR 29 o A low signal indicates printer error condition 36 SLIN 30 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 Chassis 17 GND Chassis GND 16 33 pete ND Signal GND 19 30 IP eal 15 34 NC Not connected Note In and Out refer to the direction of signal flow from the printer s point of view Chapter 1 Product Description 26 EPSON Stylus Color 440 640 740 Revision A 1 3 2 Parallel Interface Reve rse Channel NOTE The printer sends following device ID string when it is requested Transmission mode IEEE 1284 nibble mode Table 1
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8. Replace IC2 Chapter 3 Troubleshooting 94 EPSON Stylus Color 440 640 740 Revision A Table 3 6 Unit Repair of Main Board Paper feed operation is Paper feed motor does not IC2 is dead Stylus Color 440 os Replace IC2 abnormal work Check the waveform at TEKTRONIX 2238 25 18 pin of IC14 AV148 8pU DLYP 11B 8ns Ar a Beck Stylus Color 640 ER Check the waveform at 43 26 pin of IC 16 i Stylus Color 740 i Check the waveform at LIU Pin 7 of IC12 and IC13 Tek eu EAKDET 18ps 18m Stylus Color 440 640 Stylus Color 440 Stylus Color 440 640 IC15 is dead Check the output hs se asa Replace IC15 waveform of at 6 9 pin of 2 l Au Stylus Color 740 Stylus Color 740 IC15 Replace IC12 IC13 IC12 or IC13 is Stylus Color 640 dead Check the output waveform of at 3 6 18 21pin of IC15 H Stylus Color 740 Tek 10V EAKIDET 1m ims Check the output waveform of at 10 15 pin of IC12 and IC13 Chapter 3 Troubleshooting 95 EPSON Stylus Color 440 640 740 Revision A 3 5 Repair of the Printer Mechanism This section provides instruction for repairing the printer mechanism It describes various problems symptom likely causes
9. EPSON Stylus Color 440 640 740 Revision A 5 2 2 7 Head Voltage ID Input 4 By using the Up Down arrow key select Head Voltage ID Input in the adjustment menu Figure 5 19 Head voltage value adjustment function enables you to write printhead The following screen appears ID This operation is considered the most important to maintain proper ink discharging system If an ID is not written correctly it results in white or color lines and also gives bad influence on dot weight This adjustment is required in the following cases 1 When exchanging the main board 2 When exchanging the printhead 3 When exchanging the printer mechanism Change data Esc Previous Up Down arrc bg Before or after performing this operation refer to the table 5 2 and perform any appropriate adjustments or Figure 5 22 Head Voltage ID Check Input Select Menu operations 5 By using Up Down arrow key select Change data and the 1 When replacing any of the parts above make a note of VH voltage following screen appears ID appointed in advance You can find the VH voltage ID on the following position For the Stylus Color 440 the ID is 3 digits For the Stylus Color 640 the ID is 5 digits m Printhead On the side face of the printhead For the Stylus Color 740 the ID is 8 digits m Printer mechanism On the label of the packing box of the printer mechanism 2 Apply the main menu Figure 5 21 See Section 5 2 2 2 3 By
10. m 2 0 inches seconds continuous lt Stylus Color 740 gt m 110 ms 10 16 mm m 114 3 mm second Continuous O Ink supply m Exclusive ink cartridge Black and CMY Figure 1 3 Nozzle Configuration for Stylus Color 740 Chapter 1 Product Description 13 EPSON Stylus Color 440 640 740 Revision A O Paper holding capacity of Hopper Bulgaria ic PC774 Estonia ISO8859 2 PC866 LAT PC866UKR PC AR864 PC APTEC PC708 PC720 Hebrew7 Hebrew8 m Size Index card Legal PC862 m Thickness Less than 8mm NOTE 1 is not opened These character tables can not be selected in m Paper capacity 100 Cut sheets ie deraut sating moda 10 Envelopes O Typeface 65 Coated papers 360 dpi 65 Coated papers 720 dpi 20 Glossy papers Photo Paper 10 Transparent sheets 30 Index cards 1 Panoramic Photo Paper Iron On Cool Peel m Bit map LQ font EPSON Roman 10 CPI 12 CPI 15 CPI Proportional EPSON Sans Serif 10 CPI 12 CPI 15 CPI Proportional EPSON Courier 10 CPI 12 CPI 15 CPI EPSON Prestige 10 CPI 12 CPI 15 CPI Transfer Paper and Photo Sticks ES Ee Glossy Film Self Adhesive m Scaleable font EPSON Roman 10 5pt 8pt to 32 pt every 2 pt unit O Character tables 2 international character sets Not Opened EPSON Sans Serif 10 5pt 8pt to 32 pt every 2 pt unit lt Stylus Color 440 640 gt EPSON Roman T 10 5pt 8pt to 32 pt every 2 pt unit EPS
11. 3 By using the Up Down arrow key select Bi Directional Adjustment in the adjustment menu See Figure 5 19 The following screen appears MS DOS Prompt SC640 Avo d tije E 56 A Bi Directional Adjustment Adjust Check present adjustment data Note The information provided in this service tool is common for the Stylus Color 440 640 and 740 except for some printer specific information such as ink counter limits Figure 5 32 Bi D Adjustment Menu Chapter 5 Adjustment 4 By using the Up Down arrow key select Print the Bi D adjustment pattern on the screen and the screen bellow appears Print a Bi D adjustment pattern for the present data 200 CPS present data 2 present data present data 2 Note The information provided in this service tool is common for the Stylus Color 440 640 and 740 except for some printer specific information such as ink counter limits Figure 5 33 Before Printing the Bi D pattern 5 Press the Enter key The printer starts printing a Bi D adjustment pattern See the sample pattern in the following page NOTE As shown in the sample gaps between passes are sometimes created in different directions among patterns This unexpected change in direction is caused by an ink jet printer specific reason which is an ink jet printer inevitably performs a periodical cleaning specified by the flashing timer even during Bi D pattern printing so that the printing direction
12. 5VDC Line Over Voltage IC51 Limitation 5V Regulator 42VDC Line Over Voltage Limitation 42VDC Lin Drop ZD81 86 ZD51 Limitation Circuit 42VDC Line Constant Control 42 VDC 5 VDC C84 Q84 Delay Circuit Smoothing Circuit TRANSIT 1 Photo Coupler Q2 Q3 Q31 Abnormal Feed back circuit Full Wave Rectifier circuit Smoothing Main Switching Circuit Circuit Over Current Filter Circiut Protection Figure 2 16 C206 C257PSB PSE Board Block Diagram 57 EPSON Stylus Color 440 640 740 Revision A 1 Regardless of the state of power switch On or OFF the voltage is always applied in the primary side of the power supply board from the moment or at the state that AC plug is plugged in At this time F1 plays a role of preventing AC100V from coming into the F1 L1 and R1 R2 also prevent high harmonic wave noise generated in the RC circuit filter which consist of C1 C4 and R1 R2 from going out and eliminate the noise from outside here The AC is full wave rectified by diode bridge DB1 and converted to 2 x AC in voltage by smoothing electrolytic capacitor C11 The pressured up direct current makes Q1 On through the starting resistor R31 and starts the primary side of the circuit When the primary side is On state the energy current led by the electromagnetic induction through the trans T1 does not flow to the secondary side since the diode D51 on the secondary side is installed in the opposite d
13. EPSON Stylus Color 440 640 740 Revision A oe 736 SG 1787 ARR ON 7 567 Se e ep be gt 725735 a 719 j Za S 718 0 722 EXPLODED DIAGRAM FOR EPSON STYLUS COLOR 440 2 3 REV10 1000 Chapter 7 Appendix 190 EPSON Stylus Color 440 640 740 Revision A 527 Se 506 546 553 552 524 11 gE 548 d ai RS i 543 CR E A EXPLODED DIAGRAM FOR EPSON STYLUS COLOR 440 3 3 REv 1 0 10001 Chapter 7 Appendix 191 Revision A EPSON Stylus Color 440 640 740 400 for EAI 410 for RUSSIA for EUR S E ASIA OCEANIA EKL RUSSIA 400 N 102 for EUR S E ASIA OCEANIA EKL RUSSIA 102 for U 401 EXPLODED DIAGRAM FOR EPSON STYLUS COLOR 640 1 3 REv10 10002 Chapter 7 Appendix 192 EPSON Stylus Color 440 640 740 Revision A gt CA aA Be ON 2 723 754 s EXPLODED DIAGRAM FOR EPSON STYLUS COLOR 640 2 3 REv 1 0 10002 Chapter 7 Appendix 193 EPSON Stylus Color 440 640 740 Revision A 553 EXPLODED DIAGRAM FOR EPSON STYLUS COLOR 640 3 3 REv 1 0 10002 Chapter 7 Appendix 194 EPSON Stylus Color 440 640 740 Revision B 400 for EAI N 400 for ETT For EUR S E ASIA N OCEANIA RUSSIA A 13 R 123 401 FES FD a a LS LE EXPLODED DIAGRAM FOR EPSON STYLUS COLOR 740 1 3 Rev 01 10004 Chapter 7 Append
14. 536 Grounding Spring Paper Eject 567 Pulley Assembly Driven 537 Guide Paper Eject 568 Holder Pulley Driven B 538 Frame Paper Eject 569 Compression Spring 19 6 539 Holder Star Wheel Right 570 Lever PG 540 Holder Star Wheel Left 571 Lever PG Sub 541 Holder Star Wheel Front 572 Torsion Spring 63 7 542 Star Wheel Assembly 8 Natural 573 Combination Spring 12 4 28 543 Star Wheel 8 B 574 Combination Spring 16 21 6 544 Bar Spring Star Wheel 576 Absorber Slider Cap 545 Paper Guide Upper 577 Bushing Fixing Combination Gear 546 Paper Guide Right 578 Push Nut 2 547 Paper Guide Left 579 Harness HP 548 Shaft Paper Guide Upper 580 Harness PE 549 Shaft Roller Driven 581 Harness ASF 134 Spacer Housing 518 Bushing 12 Left Chapter 7 Appendix 200 EPSON Stylus Color 440 640 740 Revision B Table A 42 Part List for Stylus Color 740 3 4 Table A 43 Part Lis for Stylus Color 740 4 4 RS EEE 586 CBS Tite Screw 719 Holder Edge Guide Right 752 Absorber Waste Ink Large 587 CBS Tite Screw M3x6 720 Compression Spring 1 17 753 Tray Absorber 588 CBS Tite P4 Screw 3x6 F Zn 721 Tension Spring 0 62 754 Spacer Tray 589 Leaf Spring 6 2x0 15x11 722 L
15. Figure 2 26 EEPROM Control Circuit for Stylus Color 440 Chapter 2 Operating Principles 70 EPSON Stylus Color 440 640 740 Revision A 2 2 4 4 Timer Circuit A lithium battery is mounted on the main board and calculates how long the printer is not used The timer IC starts counting with oscillation motivated by the crystal oscillator using this battery as a power source The following figures show connection of the Timer circuit The followings explain about operation of this circuit m When the printer is on power is supplied to the Timer IC by applying 5V quickly through the D1 m This power is also used for the power to oscillator The oscillation wave form is input to XI terminal m Since the oscillation wave form of CR1 is analog wave form it is processed into the pulse form in the Timer IC m When the printer is turned on the Timer IC outputs power off Figure 2 30 Timer Counter Circuit for Stylus Color 640 time as serial data to the gate array m Once the printer is turned off 3VDC of BAT1 lithium battery is supplied as power source for the Timer IC through D7 m Since 5V at the power on is higher than 3V of the lithium battery the power is not being consumed from the lithium battery Figure 2 31 Timer Counter Circuit for Stylus Color 740 Figure 2 29 Timer Control Circuit for Stylus Color 440 Chapter 2 Operating Principles 71 EPSON Stylus Color 440 640 740 Revision A 2 2 4 5 DRAM Control 2 2 4 6 Pr
16. Figure 4 8 Removing the Absorber Tray Assembly A 112 EPSON Stylus Color 440 640 740 4 2 4 3 Removing the Pump Assembly and Cap Assembly 1 2 Remove the housing Refer to Section 4 2 1 Remove the operation panel Refer toSection 4 2 3 Remove the absorber tray assembly A Refer to Section 4 2 4 2 Loosen two screws located on the edge of the paper eject frame assembly and float release the joints for the paper eject assembly and the side frames Raise the printer mechanism toward ASF side so that you can see the bottom of the printer mechanism On the right side of frame remove the hook holding the cap assembly and release two protrusions attached to the frame lifting up the right side of cap assembly then take it out towards the bottom of the printer mechanism Note that the cap assembly is still connected to the pump assembly by the ink tube at this point Refer to figures on the next page Remove two screws No 5 securing the pump assembly to the frame Refer to the figures on the next page Release a hook securing the pump assembly to the frame and remove the pump assembly moving it toward the right Refer to figures on the next page See the following pages for the figures below Figure 4 9 Removing the Cap and Pump Assemblies Figure 4 10 Component of Pump Assembly Chapter4 Disassembly and Assembly E E CHECK E POINT E E Revision A Do not damage the rubber part b
17. lasz Eet Fi 150 A54 083 aBa 2087 2052 10K aK je E Gen 62K DCH 300 HZS24 1 2524 1 1M 0 5W 2031 al di ABB zoso G Dei t y ror HZS36 3 a81 WH Ei Ra HZS9ALL TLPs2i 268 ayo ee i 2 5A 125v 3 9 5W i OTA11SES or 250V CNi AR L ION 100 120VAC C206PSB 1 1 208 EPSON Stylus Color 440 640 740 Revision B 081 cit SivBa6o 56U 400V cis 1000P 1 5KV 300K 0 5W ca ca 2200P 2200P Fe ce SS10V 04220 ci 1M 0 5W F1 Re H2ZS9AiL p Ti 25AH 250V 10 5W CN1 LON 220 240VAC T1 PT 64 A18 220K 0 5W A31 910K 0 SW O51 D F5KQ100 c51 2200u 50v z053 HZS9AL soot z20u 10v Ges OTA113ZSA A87 iK GGO sax GMB01 300 pe oa e N 7081 GHBOI OTALISES 3110 471K 7088 HZSSALL PBA 39K 330U 6 3V C206PSE 1 1 209 S1VB DB1 A lt STON gt OOK S1VB DB1 ASTON OOK RBA 39K
18. 117 Housing Sub Left B 506 Frame Top 119 Foot 507 Motor Assembly CR 121 CP Screw M3x6 508 Pump Assembly 122 CBS Tite Screw M3x6 509 Cap Assembly 123 CB O Screw 4x5 F Zg 510 Frame Bottom 124 CBS Tite Screw M3x10 511 Sheet Protection Head 125 CBP Tite Screw M3x8 F Zn 512 Frame Front 126 CBP Tite Screw M3x10 F Zn 513 Bushing Parallelism Adjustment Left 128 Mini Clamp 514 Bushing Parallelism Adjustment Right 131 Cover Cable B 515 Paper Guide Rear 132 Lock Stacker 516 Roller PF 133 Compression Spring 2 94 517 Compression Spring 5 85 519 Lever Change 550 Roller Driven D 520 Spur Gear 26 4 551 Torsion Spring 117 6 521 Spacer C ring 552 Board Assembly PE 522 Scallop Sp AW 2x16 F B 553 Holder PE 523 Compression Spring 0 9 554 Lever PE 524 Spur Gear 73 6 555 Torsion Spring 0 22 525 Spacer Fixing Roller PF 556 Sheet Guide Plate Cable 526 Spacer Fixing Roller PF B 557 Guide Plate Cable 527 Crescent Ring 558 Sheet Cable 528 Plain Washer 12 2x0 5x15 559 Detector HP 529 Roller Assembly Paper Eject 560 Carriage Assembly 530 Bushing 6 561 Lever Adjust 531 Retaining Ring Type E 4 562 Grouding Plate Head 532 Spur Gear 36 563 Oil Pad 533 Spur Gear 11 564 Slider CR 534 Plain Washer 4 1x0 5x6 5 565 Timing Belt 535 Paper Guide Front 566 Shaft CR Guide
19. Also release the fixed hook of the cover LD Roller Assembly roller LD and remove the LD roller assembly Right and Left Paper Feed Assembl Right and Left that the hooks are hung on the paper feed assembly During assembly set the compression spring 1 66 in m During assembly when setting the compression the position for spring installation of the paper feed assembly and hang the bent part of the spring on the hook m When installing the LD roller assembly make sure POINT spring 1 66 to the spring installation position in the paper feed assembly hang the spring on the hook temporarily Also do not forget to release the hooks of these springs from the holes located on the back of paper feed assembly by rotating the spring Refer to the figure below Figure 4 17 Disassembly of Paper Feed Roller Assembly Chapter 4 Disassembly and Assembly 122 EPSON Stylus Color 440 640 740 4 2 4 7 Removing the Carriage Assembly 1 2 Remove the housing Refer to Section 4 2 1 Loosen the timing belt by pushing the driven pulley holder and remove the timing belt from the pulley of the CR motor side Take the compression spring 19 6 out of the driven pulley holder Remove the driven pulley assembly from the driven pulley holder with the timing belt Slide the driven pulley holder and remove it from the frame Remove the torsion spring hanging on the frame and PG lever Release the fixed hook of the PG lever and remov
20. Cover Cartridge Bk 581 Harness ASF 727 Lever Pad Release Left 760 Cover Cartridge C B 586 CBS Tite Screw 728 Holder Edge Guide Left 761 Separator Cartridge Bk 587 CBS Tite Screw M3x6 729 Lever Paper Return Left 762 Separator Cartridge C 588 CBS Tite P4 Screw 3x6 F Zn 730 Holder Roller LD Sub Left 763 Detector HP 589 Leaf Spring 6 2x0 15x11 731 Roller Assy LD Left 764 Cork B 590 Plain Washer 2 6x0 5x8 732 Roller Assy LD Right 765 Cleaner Head ASP 700 Printehead 733 Cover Roller LD Left 701 Fastener Head 734 Cover Roller LD Right 702 Torsion Spring 49 735 Compression Spring 1 961 703 CBP Tite Screw 3x6 F Zn 736 Lever Fixing Edge Guide B 704 Cable Head 737 Tension Spring 0 088 705 Holder Cable 738 Shaft Roller LD 706 Spacer Cable Head 739 Lever Hopper Release 707 Frame ASF B 740 Wheel Detection 708 Hopper 741 Lever Brake 709 Edge Guide 742 Pad Brake 710 Cork 743 Torsion Spring 41 2 711 Slider Edge Guide 744 Bushing Fixing Shaft 712 Compression Spring 3 23 745 Sheet Paper Feed 713 Pad Brake Edge Guide 746 Holder Sheet Paper Feed 714 Reinforcing Plate Hopper 747 Shaft Mouting CR 716 Pad Assy Right 748 CBS P4 Screw 3x6 F Zn 717 Lever Pad Release Right 750 Spur Gear 34 718 Bar Spring Holder Pad 751 Paper Guide Lower 719 Holder Edge Guide Right 752 Absorber W
21. High speed print 200 cps for Stylus Color 440 740 Normal 200 cps Draft 400 cps only for Stylus Color 640 By using head drive frequency 14 4KHz printing speed is twice faster than Stylus Color m Compact size m 429mm W x 231mm D x 155mm H for Stylus Color 440 m 429mm W x 231mm D x 157mm H for Stylus Color 640 m 429mm W x 261mm D x 157mm H for Stylus Color 740 m Weight 5 2Kg for 3 models Acoustic noise m Approximately 45 dB for Stylus Color 440 m Approximately 47 dB for Stylus Color 640 740 Interface H Bi directional parallel I F IEEE 1284 level 1 device for 3 models m Serial I F up to 1800 bps only for Stylus Color 640 m USB One unit combined black and CMY head Windows exclusive for Stylus Color 440 640 Standard NLSP 5 Scaleable fonts only for Stylus Color 740 See Table 1 1 in the following page for the consumable list EPSON Stylus Color 440 640 740 Revision A Table 1 1 Consumables Available for Stylus Color 440 640 740 Remarks Black Ink Cartridge 020189 Stylus Color 740 Black Ink Cartridge S020187 Stylus Color 440 640 CMY Ink Cartridge S020191 Stylus Color 440 640 740 CMY Ink Cartridge EPSON 360 dpi Ink Jet Paper S041025 Size A4 200 sheets EPSON 360 dpi Ink Jet Paper S041059 Size A4 100 sheets EPSON 360 dpi Ink Jet Paper S041060 Size Letter 100 sheets Photo Quality Ink Jet Paper S04102
22. 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 r gles de s curit en vigueur unless this manual specifies to do so m When transporting the printer after installing the ink cartridge be sure to pack the printer for transportation without removing the ink cartridge H Use only recommended tools for disassembling assembling or adjusting the printer m Apply lubricants and adhesives as specified See Chapter 6 for details m Make the specified adjustments when you disassemble the printer See Chapter 4 for details ia m Never remove the ink cartridge from the carriage m When assembling if an ink cartridge is removed and needs to be installed again be sure to install a new ink cartridge because of the following reasons m Once the ink cartridge mounted on the printer is removed air comes into and creates bubbles in the cartridge These bubbles clog ink path and cause printing malfunction m lf an ink cartridge in use is removed and is reinstalled ink quantity will not be detected correctly since the counter to check ink consumption is cleared m Because of the reasons above make sure to return the printer to the user with a new ink cartridge installed Chapter 4 Disassembly and Assembly 4 1 2 Tools Tools Table 4 1 Tool List Commerc
23. checkpoints and solutions Select appropriate symptom from the table and check each parts and its function as described in the checkpoint Abnormal pump mechanism operation Abnormal PF motor operation when the power is turned on Table 3 7 Repair of the Printer Mechanism Foreign substances are loaded in the PF gears Manually drive the platen drive gear and check it if it rotates normally Remove any foreign substances The PF motor is defective Refer to Table5 1 Check the inner coil resistance and see if there is any disconnection of the coil Exchange the PF motor Ink is not absorbed or is poorly absorbed Used ink does not go through the waste ink tube The pump tube is crashed Check the tube visually Fix the crashed part by the airgun Capping rubber is damaged or deformed Check the capping rubber visually Replace the cap mechanism The tube is out of the cap Check if the tube is out of the cap visually Connect the tube properly Pump bulb is not closed at absorption Check the bulb operation visually Replace the cap mechanism Abnormal carriage operation Abnormal carriage operation at power on Foreign substance in the CR drive gear Check visually if there is any substances or not Remove any foreign substances CR motor is defective Check the inner coil resistance and see if there is any disconnection of the coil Repla
24. n lt 36 00H 1 2CH 00H 01H data z OVAA F40 hen T 2DH Reserved for USB 00H TE Reserved tor SR 2EH Reserved for USB 00H adjustment data 1AH Reserved for 00H 2FH Reserved for USB 00H adjustment data 30H Font 0 Roman 1 Sans Serif 00H 02H 1BH Viet dot position 40 lt n lt 40 00H 1 2r Gourier 3 Prestige adjustment data by 1 1440 inch 4 Script 10 Roman T ea eae e ji a SS GR 11 Sans Serif 7 Draft arriage spee 4 lt n lt j i Gm adjustment data by G A timer unit at Pien de 10 cpl ii 12 cp on oun _ 2 15 cpi 3 17 cpi 1DH Carriage phase 00H E 4 20 cpi 5 Proportional eae 32H Print direction 0 Bi D 02H 02H 1EH Paper sensor 127 lt n lt 127 00H 1 control 1 Uni D adjustment data by 1 720 inch 2 Auto 1FH ERROR Code 00H 00H 3 BUSY signal delay time form fall edge of a STB signal 20H CPSI password 00H 00H Fast Maximum 1MB s Slow Maximum 600KB s 21H 00H 00H 4 Select IEEE 1284 transfer mode ECP or Nibble 22H 00H 00H 5 Enable or disable reverse transfer When disabled ignore SLIN signal 23H 00H 00H 24H CPSI license flag 0 disable 1 enable 00H 00H 25H CPSI font license 0 disable 1 enable 00H 00H 26H Interface selection 0 Auto 1 Parallel 00H 00H 2 Serial 3 USB 2 Chapter 7 Appendix 175 EPSON Stylus Color 440 640 740 Revision A Tab
25. 0 with YMC cartridge 1 alone 60H Password 6 5AH 44H Ink Counter 00H 00H 61H En 45H Cb total 00H 00H 62H Ink counter Rb 00H 00H 46H 1count 100 ng 00H 00H 63H 00H 00H 47H 00H 00H 64H Ink counter Ry 00H 00H 65H 00H 00H Chapter 7 Appendix 172 EPSON Stylus Color 440 640 740 Revision A Notes Table A 26 i Change model name of IEEE 1284 device ID Stylus Color 440 640 EEPROM Address Map Continued 1 Adjusted at factory Address Explanation Setting S QPIT ee 2 Initialized after panel initialization is performed ettings ettings 3 01H is a factory setting for pacific market This note for the address 35H is only 66H Ink counter A 00H 00H 2 applicable for the Stylus Color 440 67H OOH 00H 2 4 This function uses in the case that Raster graphics of 180 x 180 dpi It is economy P binding in a driver is printed and specifies the size of a dot 68H ower off time 00H 00H 2 p An ink life can be improved by making this binding a normal x 1 dot although an 69H 00H 00H 2 ordinariness prints it with normal x2 dot Yet the printing result becomes pale even 6AH CL time 00H 00H 2 since before This function is implemented in the firmware subsequent to version 6BH 00H 00H 2 Kaxxxx Refer to the tables below 6CH accumulated 0 0 minute 00H 00H 6DH printing time Se de 00H 00H Table A 27 Economy Mode Spe
26. 00H OAH Head actuator 00H 1 rank ID for VAN OBH Head actuator 00H 1 rank ID for Vhu OCH Head actuator 00H 1 rank ID for VAL ODH Head actuator 00H 1 rank ID for AR OEH Head rank MW ID 00H 1 OFH Reserved for 00H Head lD 10H Reserved for 00H Head lD 11H Reserved for 00H Head ID 12H Head actuator 00H 1 rank ID for lwAB 13H Head actuator 00H 1 rank ID for lwCD 174 EPSON Stylus Color 440 640 740 Revision A Table A 30 Stylus Color 740 EEPROM Address Map Coutinued Table A 31 Stylus Color 740 EEPROM Address Map Coutinued i QPIT Factory e QPIT Factory Address Explanation Setting Settings Settings Address Explanation Setting Settings Settings 14H Head actuator 00H 1 27H Interface time out 0 to 255 by second value of 0 OAH OAH rank ID for lwEF means 10 seconds 15H Bi D Adjustment 36 lt n lt 36 00H 1 28H Compatibility 0 Fast 1 Slow 00H 00H data for Normal by 1 1440 inch speed 2 Special 1 3 Special 2 dot 29H ECP speed 3 0 Fast 1 Slow 00H 00H 16H Bi D Adjustment 36 lt n lt 36 00H 1 2AH 00H 00H ata Tak Mera EN 2BH VE Control flags bit 1 EGP mode 00H 00H 17H Bi D Adjustment 36 lt n lt 36 00H 1 0 Off 1 On 4 data for Variable by 1 1440 inch bit 0 IEEE1284 mode dot 0 On 1 Off 5 18H Uni D adjustment 36 lt
27. 11 Details of Device ID Synchronization Refer to the IEEE 1284 specification 00H 3CH Contents Handshaking Refer to the IEEE 1284 specification MGF EPSON Production Maker Data trans timing Refer to the IEEE 1284 specification CMD ESCPL2 BDC Command system Signal level IEEE 1284 level 1 device Stylus SP Color SP 440 TTL compatible level MDL Stylus SP Color SP 640 Model name Adaptable connector 57 30360 amphenol or equivalent Stylus SP Color SP 740 Extensibility request The printer responds affirmatively when CLS PRINTER Class the extensibility request values are OOH or NOTE 00H denotes a hexadecimal value of zero MDL value depends on the 04H that mean EEPROM setting 00H Request Nibble Mode Reverse Channel Transfer NOTE EE ee 04H RequestdevicelD Return Data using Nibble Mode Rev Channel Transfer Table 1 12 shows pin assignment for reverse channel 3 In these case of signals twist pair line is used and returning side is connected to Signal GND 3 Reverse channel is the mode that any data is transferred from the printer to the PC Chapter 1 Product Description 27 EPSON Stylus Color 440 640 740 Revision A Table 1 12 Parallel I F Reverse Channel Return GND Signal Name Pin In Out Functional Description 1 HostClk 19 Host clock signal The DATAO through DATA7 signals represent data bits 0 to7 respectively Each signal is at high level 2 9 Data0 7 20 27 when data is logical 1 and low level when da
28. 2 Operating Principles 54 EPSON Stylus Color 440 640 740 Revision A 2 1 1 6 1 Cap Mechanism In the cap mechanism in order to prevent ink from being thickened on the head surface it is controlled that the head surface stays adherent to the rubber frame of the cap surface when the power is off The absorber is spread in the cap and can hold a certain amount of ink which is absorbed from the head without draining it to the waste ink pad Also in the bottom of absorber there are two valves in order to control adhesion of head and cap surface and one exit to drain ink to the waste ink pad If the carriage is out of HP in this case in the printable area or paper feed position the valves on the cap mechanism stays in the position A in the figure above and are always closed In this condition the carriage collides with flag actual ink absorption and slight ink absorption are performed Also by moving the carriage to further right Flag for Carriage Ink Eject Valve Negative pressure side and colliding the flag for opening the valves with the frame negative pressure is released in the state that head surface and cap are Valve adhered This makes it possible for ink on the nozzle plate surface to be ready for leaving from the cap in the stable condition Close state Release state Flag for frame Figure
29. 20 Panel Function with Power On Switch Function Load Eject 1 Starts the status print 1 Cleaning lt Stylus Color 440 640 gt Changes the code page 2 lt Stylus Color 740 gt Enters the Default setting mode 3 Load Eject Enters the EEPROM Reset mode The Load Eject LED blinks for a few seconds Cleaning Used only for resetting the maintenance error 4 NOTE 1 You can check the 1 firmware version 2 protection counter and 3 nozzle check pattern by performing this function NOTE 2 The code pages for Stylus Color 440 640 are not opened NOTE 3 Since Stylus Color 740 have 2 specifications both the standard and NLSP version user can select some parameter and a character table by communicating with the printed list NOTE 4 After you enter this EEPROM reset mode go to Table 1 21 Chapter 1 Product Description Table 1 21 EEPROM Reset Cleaning Resets the EEPROM 5 1 While the Load Eject LED is blinking for about 2 seconds press down the Cleaning switch for 10 seconds fie The following steps vary depending on the printer 2 Stylus Color 440 640 After 10 seconds both Bk and CMY ink LEDs come ON simultaneously Stylus Color 740 After 10 seconds Load Eject Bk and CMY ink LEDs all blink simultaneously 3 Stylus Color 440 640 Confirming the both LEDs are ON release the Cleaning switch The printer automatically starts initialization operation to reset the specified address
30. A timer unit adjustment data for 1440 dpi OAH Head actuator 12H 1 rank ID for VAN OBH Head actuator 01H 1 rank ID for Twh2 Chapter 7 Appendix Table A 21 Stylus Color 440 640 EEPROM Address Map Continued Address Explanation Setting Sunes eal OCH Stylus Color 440 00H 1 Reserved Stylus Color 640 10H 1 Head actuator rank ID for VAM ODH Stylus Color 440 00H Reserved Stylus Color 640 00H 1 Head actuator rank ID for VhMS OEH Reserved 00H OFH Reserved 00H 10H Password 1 5AH 11H OFH 12H Custom EEPROM 00H 00H 13H sub number 00H 00H 14H 00H 00H 15H 00H 00H 16H Reserved 00H 17H Reserved 00H 18H CPSI password 00H 00H 19H 00H 00H 1AH 00H 00H 1BH 00H 00H 1CH CPSI flags bit7 CPSI license 00H 00H 0 Disable 1 Enable bit6 CPSI Font license 0 Disable 1 Enable 1DH Reserved 00H 1EH Reserved 00H 1FH EEPROM 42H Revision 170 EPSON Stylus Color 440 640 740 Revision A Table A 22 Stylus Color 440 640 EEPROM Address Map Continued QPIT Factory Address Explanation Setting Settings Settings 20H Password 2 5AH 21H OFH 22H Interface selection 0 Auto 1 Parallel 00H OOH 2 2 Serial 23H Interface wait time 0 to 255 by second OAH OAH 24H Parallel I F speed 0 High speed 1 Normal 00H 00H 25H Stylus Color 440 00H Reserved Stylus
31. COMPONENTS ONLY WITH THOSE COMPONENTS BY THE MANUFACTURE INTRODUCTION OF SECOND SOURCE ICs OR OTHER NONAPPROVED COMPONENTS MAY DAMAGE THE PRODUCT AND VOID ANY APPLICABLE Download Service Manual and Resetter Printer at htto printer1 blogspot com PREFACE This manual describes basic functions theory of electrical and mechanical operations maintenance and repair procedures of Stylus Color 440 640 740 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 circu
32. Color 440 640 740 Revision A 1 8 Main Components Stylus Color 440 640 740 have following major units Also it is one of the major characteristics that the bottom of the Printer mechanism serves as the Lower case at the same time Each unit from 2 to 5 are simply explained below 1 Upper Case 2 Printer Mechanism 3 Main Control Board Stylus Color 440 C206 Main B Board C255 Main Board Stylus Color 640 C256 Main Board Stylus Color 740 C257 Main Board 4 Power Supply Board Stylus Color 440 C206 PSB PSE Board Stylus Color 640 C206 PSB PSE Board Stylus Color 740 C257 PSB PSE Board 5 Control Panel Board Stylus Color 440 C206 PNL Board Stylus Color 640 C206 PNL Board Stylus Color 740 C209 PNL Board Chapter 1 Product Description 1 8 1 Printer Mechanism Like the previous printer mechanism such as for Stylus Color 400 600 and Stylus Photo one of the major characteristics of Stylus Color 440 640 740 is that the printers have no Engage Disengage mechanism to change between the pump mechanism and paper feeding mechanism In stead this change over control is done by the distinction between turning direction of PF Pump motor and position of present carriage unit Also another major characteristic is that printhead is on unit combining black and color 38 EPSON Stylus Color 440 640 740 Revision A 1 8 2 C206 Main B Board Stylus Color 440 1 8 3 C256 Main Board Stylus Color 640 C206 Main B board controls Stylus Colo
33. Color 640 0 Couier 00H 00H Font 26H Stylus Color 440 00H Reserved Stylus Color 640 0 10 cpi 00H 00H Pitch 27H Stylus Color 440 0 Bi D 02H 02H Print direction 1 Uni D control 2 Auto Stylus Color 640 2 Auto 02H 02H Print direction control 28H Stylus Color 440 0 PC437 1 PC850 00H 1 CG table Stylus Color 640 0 PC437 1 PC850 08H 00H CG table 29H Reserved 00H 2AH Auto LF Network bit1 Network I F mode 00H 00H I F mode O off 1 on bitO Auto line feed O off 1 on Chapter 7 Appendix Table A 23 Stylus Color 440 640 EEPROM Address Map Continued Address Explanation Setting Sunes Hell 2BH Panel mask bit7 Enable Self Test 00H 00H function bit6 Enable Hex Dump 3 bits Extended settings bit2 Cleaning bit1 Replace UC bitO Load Eject 2CH Reserved 00H 2DH Reserved 00H 2EH Reserved 00H 2FH Reserved 00H 30H Password 3 5AH 31H OFH 32H Reserved 00H 33H Reserved 00H 34H Top margin 42 to 44X360 78H 78H 3 35H by 1 360 inch 00H 00H 3 NOTE Stylus Color 440 00H 36H Reserved 37H Stylus Color 640 1244 to 44x360 36H FOH 36H FOH Bottom margin by 1 360 inch 37H 1EH 37H 1EH Stylus Color 440 00H 38H Reserved 39H Stylus Color 640 1244 to 44x360 38H FOH 38H FOH Page length by 1 360 inch 39H 1EH 39H 1EH 3AH Reserved 00H 3BH Reserved 00H 3CH Reserved 00H 3DH Reserved 00H NOTE The reference 3 for th
34. Color 740 C209PNL Panel Shield Plate 1 Remove the housing Refer to Section 4 2 1 E K JA 2 Remove two screws No 1 securing the operation panel and disconnect the operation panel from the printer mechanism 3 Remove one screw No 1 and detach the left panel housing 4 Remove screws No 3 securing the panel board assembly and remove C206 209 PNL board from the panel assembly 5 Disconnect the FFC from the connector on the C206 209 PNL board Panel Assembly stacker assembly since the operation panel is HA Removing the operation panel also separates the attached to the stacker assembly Left Panel Housing Figure 4 5 Removing the Operation Panel Chapter 4 Disassembly and Assembly 108 EPSON Stylus Color 440 640 740 Revision A 4 2 4 Disassembling the Printer Mechanism Since Stylus Color 440 640 740 do not have the lower housing the printer mechanism part should already appear by now Therefore this section explains procedures for disassembling the major parts or units of the printer mechanism carriage correctly There are 2 pins to determine the location m When you install the printhead to the carriage make sure that the location pin on the carriage side is placed in the notch of the printhead m Make sure that the earth board is installed to the POINT 4 2 4 1 Removing the Print Head Unit 1 Remove the housing Refer to Section 4 2 1 m Since the ink cartridge o
35. Phase drive signal A 3 THM In Thermistor detect signal 4 CR B Out Phase drive signal B 4 GND Ground 5 LAT Out Head data latch pulse output Table A 6 Connector CN7 S SRE an ASIC e 7 SI2 Out Head data output 2 Pin Signal Name UO Function 8 GND Ground 1 PRA EN PASSE awe signal A 9 sh Out Head data output 1 2 PFB Out Phase ce signal B 10 GND a 3 PEA AL FREE ows oie CA 11 CLK Out Head data output 1 4 PF B Out Phase drive signal B 12 GND Grund 13 NCHG Out Head all on pulse output 14 GND Ground 15 VDD a Logic power supply 5V 16 GND2 Ground 17 GND2 Ground 18 GND2 Ground 19 COM Head drive power supply 20 COM Head drive power supply 21 COM Head drive power supply 22 VHV Head drive voltage control signal 23 VHV Head drive voltage control signal Chapter 7 Appendix 164 EPSON Stylus Color 440 640 740 Revision A Table A 8 Connector CN8 C256MAIN ni Name Function Table e Connector CN10 Signal Name Function Chapter 7 Appendix 1 Black ink cartridge detect signal 1 42V Mechanism drive power supply 2 In Color ink cartridge detect signal 2 42V Mechanism drive power supply 3 THM In Thermistor detect signal 3 GND Ground 4 GND Ground 4 GND Ground 5 LAT Out Head data latch pulse out
36. RAM which is used as work area for receiving data and developing the data and CPU manages its control such as CE RAS CAS controls Gate Array E05B43 controls following functions O Motor control Each motor performs data transmission that motives Micro Step Dl Head voltage control In the ink jet printers drive voltage wave form trapezoidal wave form in order to drive PZT is formed in the various shapes according to the types of the printers Therefore it is necessary to form appropriate drive form for each head Head voltage control forms necessary wave form for each control signals and outputs them O EEPROM control The correction value to eliminate the error of each printers at production process is installed in the fixed address of IC When the power is turned off the contents set by users is written instantly and is red to the RAM when the power is turned on O Sensor Data The sensor detects information at the various conditions which is necessary for the printer operation The gate array recognizes signals and changes over to the next control O Timer Data The timer IC that uses lithium battery as power source monitors how long the power is off When the power is turned on it is changed to appropriate cleaning level according to the time that the power is off Chapter 2 Operating Principles O Serial I F Control The gate array receives serial data through the transceiver IC O Parallel I F control With the use
37. Section 5 2 2 2 1 Step 1 as the screen automatically advances to the Mode Name Null Condition screen Figure 5 9 Chapter 5 Adjustment 137 Revision A EPSON Stylus Color 440 640 740 5 2 2 2 1 Registering the printer model name 1 lfnomodelnameisregistered the screen shown below appears Press the E key while pressing the Alt key and the program advances to the Model Name Input Screen 3 MS DOS Prompt SC640 Av e Ea 2 5 al Starting SERVICE PROGRAM Figure 5 9 Model Name Null Condition Fa d til le 5 se al Figure 5 10 Model Name Input Screen Chapter 5 Adjustment 2 Type the correct model name referring to the box below Stylus _ COLOR _ 440 Stylus _COLOR_640 Stylus_COLOR_740 m means a space H Be sure to type the model name in exactly the same way as shown above paying attention to the text formats uppercase or lowercase m If you mistype the model name the program will automatically return to the model name input screen Figure 5 10 For Stylus Color 740 If the printer is Stylus Color 740 you must set the correct CG NLSP or Standard Therefore be sure to read the instructions below carefully to take the proper steps After a few seconds the model name appears on the Initial Screen 2 Figure 5 7 Proceed to one of the following steps mm If the printer is Stylus Color 440 640 return to Section 5 2 2 2 Step 6 mm If the printer is Styl
38. When the ink cartridge is installed if any dirt or dust around the cartridge needles are absorbed into the head inside there is a great possibility of causing nozzle clog and disturbance of ink flow and finally causing alignment failure and dot missing In order to prevent this filter is set at cartridge needle below and ink is once filtered here Chapter 2 Operating Principles Nozzle Selector Board I C Sensor s actuator Stylus Color 440 640 UC Sensor s actuator Stylus Color 740 Needle Ink Cartridge PZT Filter Nozzle pa N Cavity Figure 2 2 Print Head Sectional Drawing 45 EPSON Stylus Color 440 640 740 Revision A 2 1 1 2 Printing Process Following figures show the sectional drawings of normal state and ejecting state of the printhead Ink Course N Ze 1 Normal State l When the print signal is not output PTZ also does not move in the waiting state normal state Refer to Figure 2 3 e o e e o e o e o 2 Ejecting State an e When the print signal is output from the C206 main B C255 C256 C257 main board IC IR2C72C Nozzle Selector located on the Nozzle Nozzle Plate Print head unit latches the data once by 1 byte unit Appropriate PZT latched by nozzle selector is pushed into the cavity by applying common voltage from the main board By this operation ink that is stored in the cavity pops out from nozzles Refer to figure 2 4 Figure 2 3 Print Head Norm
39. ___ changed and cleaned UE mode 0 0ff 1 On bit 0 Black cartridge bitO Auto line feed changed and cleaned 0 Off 1 On 44H Ink counter Cb 00H 00H 35H Panel mask bit 7 Entry Self Test 00H 00H 45H 00H 00H function bit 6 Entry Hex Dump 46H 00H 00H bit 5 Extended settings bit 4 Reserved SC on a bit 3 Reserved 48H Ink counter Cy 00H 00H bit 2 Cleaning 49H 00H 00H bit 1 Replace UC 4AH 00H 00H bit 0 Load Eject 4BH 00H 00H 36H Top margin 42 to 44x360 00H 00H 37H by 1 360 inch 78H 78H Chapter 7 Appendix 176 EPSON Stylus Color 440 640 740 Revision A Table A 34 Stylus Color 740 EEPROM Address Map Coutinued Table A 35 Stylus Color 740 EEPROM Address Map Coutinued Address Explanation Setting nue Ge Address Explanation Setting re ee 4CH Ink counter Cm 00H 00H 6AH Printer ID Strings 00H 00H 4DH 00H 00H 6BH 22 00H 00H 4EH 00H 00H 6CH 00H 00H 4FH 00H 00H 6DH 00H 00H 50H Ink counter Cc 00H 00H 6EH 00H 00H 51H 00H 00H 6FH 00H 00H 52H 00H 00H 70H 00H 00H 53H 00H 00H 71H 00H 00H 54H Ink counter Clm 00H 00H 72H 00H 00H 55H 00H 00H 73H 00H 00H 56H 00H 00H 74H 00H 00H 57H 00H 00H 75H 00H 00H 58H Ink counter Cle 00H 00H 76H 00H 00H 59
40. and 4 LEDs Figure 1 11 shows control panel of Stylus Color 440 640 740 Power LED Paper Out LED 2 Ink Out Bk LED Ink Out CMY LED Cleaning Switch Load Eject Switch Ink maintenance Power on Swich Stylus Color 440 640 Stylus Color 740 Figure 1 11 Control Panel Over Viewing Chapter 1 Product Description 1 4 1 Indicators LEDs 1 Power Lights when the operate switch is ON and AC power is supplied 2 Paper out Lights during the paper out condition and blinks during the paper jam condition 3 Ink Out Black Lights during no Black ink condition and blinks during the Black ink low condition 4 Ink Out Color Lights during no Color ink condition and blinks during the Color ink low condition 32 EPSON Stylus Color 440 640 740 Revision A 1 4 2 Panel Functions Refer to Table 1 19 to Table 1 21 Table 1 19 Panel Functions Switch Function Load Eject 1 Loads or ejects a paper re 2 When the carriage is on the I C replacement position return within 2 sec d e e the carriage to the capping position Load Eject J 1 Starts the I C replacement sequence for 2 sec Cleaning 1 Starts We printhead cleaning sequence 2 In case it s in the ink low or ink out condition starts the I C for 2 sec replacement sequence Cleaning 1 When carriage is on the I C replacement position return the within 2 sec carriage to the capping position Table 1
41. check LH state NOTE A low logic level on the Logic H signal is 2 0V or less when the printer is powered off and this signal is equal or exceeding 3 0V when the printer is m When the serial interface is not selected the interface sets the powered on The receiver shall provide an impedance equivalent to 7 5K ohm DTR signal MARK to ground m When the printer is initialized or returned to the idle state Parallel interface becomes the ready condition and DTR of serial interface becomes SPACE Low condition and reset off line bit of Main Status Register MNSTS to option interface 1 3 2 1 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 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 Chapter 1 Product Description 30 EPSON Stylus Color 440 640 740 Revision A 1 3 3 Serial Interface for Stylus Color 640 740 1 3 3 1 USB Interface Only for Stylus Color 740 Standard Based on RS 423 Standard Universal Serial Bus Specifications Rev 1 0 Synchronization Synchronous Universal Serial Bus Device Class Definition Bit Rate Approx 1800Kbps for Pr
42. improve even after the cleaning replace the head Capping absorber is touching the head surface Check the head absorber visually Replace the head absorber if it is deformed A dot is not printed occasionally Print head surface is not clean dot missing Perform the cleaning operation several times and check printing Perform the cleaning The head FFC is disconnected inside Check the FFC by using a tester Replace the head FFC The head FFC is out of connection Check if the head FFC on the board or carriage is connected surely Connect the FFC properly The head unit is detective Perform the cleaning operation several times and check printing If condition does not improve even after the cleaning replace the head I C is defective Install the new UC and perform self test Replace C A vertical line is not aligned Black specks or dots The head FFC is out of connection Check if the head FFC on the board or carriage is connected surely Connect the FFC properly The head unit is detective Bi directional alignment is not adjusted Check connection with the head FFC Perform Bi D adjustment Replace the head if there is no connection problem with the FFC Refer to Chapter4 White line appears in the image data Head angle is not correct Perform head angle adjustment Refer to Chapter4 Platen gap is no
43. jus Normal speed 4us 3us Pl for Stylus Color 440 640 only for Stylus Color 740 Table 1 15 Signal level for TTL IEEE 1284 level 1 device 1 3 2 2 Auto Interface Selection for Stylus Color 640 740 O Manual Selection One of two interfaces can be selected by the 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 which interface receives data when it is powered on Then the interface that receives data first is selected When the host stops data transfer and the printer is in the Parameters Minimum Maximum COndition stand by state for the seconds the printer is returned to the idle VOH 5 5V state As long as the host sends data or the printer interface is busy VOL 0 5V a state the selected interface is let as it is IOH 0 32mA VOH 2 4V IOL 12mA VOL 0 4V Following explains conditions of other interfaces when a particular CO 50pF interface is selected VIH 2 0V ag Gem m When the parallel interface is not selected the interface gets mm zi TES into BUSY state At this time LH signal is set to L That means T e e Km av blocking power supply and no responds from 1284 Therefore it e SS a Ss is necessary for the host which requires Reverse transfer to S p
44. of IEEE1284 Nibble mode it became possible not only to receive the data from the host but also to return various information which the printer possesses to the host Common Driver IC The trapezoidal wave form circuit for head drive is became to HIC from the previous discrete structure Because of this it is not necessary to adjust the adjustable VR on the board during production process Various electric charge discharge control signals are all processed in the HIC CR PF Motor Drive Circuit Constant current drive is performed by the HIC Out of this only CR Motor is controlled for Micro Step control and HIC becomes possible to flow the appropriate current value at each steps PF Motor has only 1 2 2 2 phase drive method Also bipolar drive is performed on the 4 cables individually 63 EPSON Stylus Color 440 640 740 2 2 4 C257 Main for Stylus Color 740 Various DC voltage generated on the C257 PSB PSE board is added various signals in order to drive the printer function on the C257 main board the drive of CR PF Pump motor and printing head is performed Following figure shows the circuit diagram for Stylus Color 740 CN3 USB P ROM IC3 CN9 HD FFC CR Motor D RAM f i IC4 PF Motor CN1 Parallel i D RAM IC5 Buffer ICQ EEPROM Reset IC IC7 ICQ M ROM IC6 E05B588 Motor C90A05 IC2 Driver IC1 IC13 Transceiver IC10 QU PE Sensor SR HP Sensor Figure 2 19 C257 Main B
45. operations Following tables show PF motor specifications and control method at each mode Table 2 5 PF Motor Specifications Stylus Color 440 640 Item Motor type Description 4 phase 48 pole Stepping motor Drive voltage 42VDC 5 Coil Resistance 7 Ohms 10 per 1 phase under 25 C environment Drive frequency Hz 100 1990 Hz Control method Bi Pola Drive Table 2 6 PF Motor Specifications Stylus Color 740 Motor type 4 phase 200 pole Stepping motor Drive voltage 42VDC 5 Coil Resistance 8 8hms 10 per 1 phase under 25 C environment Drive frequency Hz 100 3240 Hz Control method Bi Pola Drive 49 EPSON Stylus Color 440 640 740 Revision A Papers on the ASF auto sheet feeder supplied by the user are carried to the printer inside by paper pick up sequence Unlike the previous models ASF of Stylus Color 440 640 740 has mufti feed prevention mechanism Following explains this function and figure below shows its mechanism 1 Multi feed prevention mechanism When the Load Eject button is pressed reversed rotation of PF motor is performed The return lever resets papers which are already in the out of stand by position in the stand by position and make it possible to perform stable paper feeding by picking up the paper again Following explains process of multi feed prevention step by step Refer to the figure above and conf
46. or IC5 is dead e If you can not find the waveform at 14 pin of IC6 the IC6 is Replace IC6 dead Stylus Color 440 Stylus Color 440 640 nn Stylus Color 440 640 CRU2 is dead Check the waveform at TEKTRONIX 2230 Replace CRU2 or CR2 27 28 pin of IC1 aV148 8BU DLYp 1 38ms dr BKS Stylus Color 640 Stylus Color 740 FE Stylus Color 740 CR2 is dead Check the waveform at Replace CR1 or IC2 118 or 119 pin of IC2 And check the output Stylus Color 740 waveform at 91 pin of CR1 or IC2 is dead IC2 Tek 2v EAKDET ms 2 1ns The carriage does not Carriage motor does not IC2 is dead Stylus Color 440 N Replace ICH operate normally operate at all or it occurs a Check the waveform at EKTRONIX 2238 abnormal noise 25 18 pin of IC14 aU14 8BU DLYp 54 98hs J SE 4 d Stylus Color 640 Check the waveform at p ii Lo 43 26 pin of IC14 d i Stylus Color 740 V L JULU Check the waveform at Continues to the next Continues to the next 27 16 pin of IC11 eu caKpeT snb sms page page Chapter 3 Troubleshooting 93 EPSON Stylus Color 440 640 740 Revision A Table 3 6 Unit Repair of Main Board Continued The carriage does not operate normally Continued Carriage motor does not operat
47. signal IW GND Ground ASFV Sensor power supply 5V Table 7 15 Connector CN7 Ba Name Function 1 Phase drive signal A 2 CR S Phase drive signal A 3 CRB Out Phase drive signal B 4 CR B Out Phase drive signal B Table es Connector CNS BA Name Function 1 Phase drive signal A 2 PFB S Phase drive signal B 3 PF A Out Phase drive signal A 4 PF B Out Phase drive signal B 167 EPSON Stylus Color 440 640 740 Revision A Table A 17 Connector CN9 Table A 18 Connector CN10 Pin Signal Name Te Function 1 42V Mechanism drive power supply 2 42V Mechanism drive power supply 3 GND Ground 4 GND Ground 5 PSC Out Power supply switch output signal 6 GND Ground 7 GND Ground 8 5V Logic power supply Table A 19 Connector CN11 Pin Signal Name Te Function 1 SW2 In Panel switch on off 2 2 SWO In Panel switch on off 0 3 PSC In Power on off switch 4 SW1 In Panel switch input 1 5 LED3 Out LED drive signal 3 6 5V Logic power supply 7 5V Logic power supply 8 LED2 Out LED drive signal 2 9 GND Ground 10 LED1 Out LED drive signal 1 11 GND Ground 12 LEDO Out LED drive signal 0 Pin Signal Name UO Func
48. suddenly changes However this directional difference among Bi D patterns should not be considered and you can always confirm and adjust the pattern correctly by referring to gap amount only 151 EPSON Stylus Color 440 640 740 Revision A 6 By using the Up Down key select Adjust on the Bi D adjustment menu Figure 5 32 Then the screen below appears 200 CPS Bi D Pattern Data 2 200 CPS Bi D Pattern Data 0 DR u Right Gap d II Figure 5 35 Bi D Value Input Menu flee Ea SS al Select an adjustment value with the Up Down arrow keys 200 CPS Bi D Pattem Data 2 7 The value 0 blue appears in the center of the screen and changes up down every time you press the Up Down arrow key Using the keys apply the number for the most properly aligned pattern in the Bi D adjustment pattern print 8 After you set the value correctly press the Enter key and the program stores the selected value 9 Press the Esc key once The current screen returns to the Bi D adjustment menu See Figure 5 32 Figure 5 34 Bi D ADjustment Pattern Sample 10 Repeat the procedure from Step3 to Step9 until the Bi D adjustment pattern is correct Chapter5 Adjustment 152 EPSON Stylus Color 440 640 740 6 1 Overview This section describes the points and the procedures for maintaining the printer in its optimum condition 6 1 1 Cleaning This printer has no mechanical components which require re
49. the counter value for the waste ink pad in the maintenance menu Figure 5 12 The Current Protection Counter Conformation 1 Screen shown in Figure 5 15 appears 4 By using the Up Down arrow key select the Clear the protect counter value on the screen The screen shown below appears MS DOS Prompt SC640 Figure 5 18 Zero Clear of Protect Counter Value H Be sure to replace the installed waste ink pad with a new one after or before you clear the current protection counter value m If you select Have not replaced the current screen automatically returns to the previous screen Figure 5 17 Figure 5 17 Current Protection Counter Clear Screen Chapter 5 Adjustment 143 EPSON Stylus Color 440 640 740 5 2 2 6 Market Destination Check only for Stylus Color 740 As already mentioned there are two models for Stylus Color 740 Standard model and NLSP model and you are required to set the suitable destination depending on the type of the main board supported Without this operation Market destination setting users can not use the NLSP characters despite their printers are equipped with the CG ROM IC6 on the main board For this reason always confirm the market destination status on the Destination Setting Screen for Stylus Color 740 Figure 5 19 after you change or set a CG supports the NLSP characters You can distinguish the NLSP model from the Standard one by checking the following points on the C257 Main
50. the PE sensor Refer to Table 5 2 HP sensor is defective Check the signal level of the HP sensor Refer to Table 5 2 Replace PE sensor Head FFC is disconnected Check if the head FFC is connected Connect the head FFC CR motor is defective Check the CR motor cable is connected Replace the CR motor if there is no problem in the cable connection PF motor is defective Check if the PF motor cable is connected Replace the PF motor if there is no problem in the cable connection Chapter 3 Troubleshooting 98 Revision A EPSON Stylus Color 440 640 740 4 1 Overview This chapter describes procedures for disassembling the main components of EPSON Stylus Color 440 640 740 Unless otherwise specified disassembly units or components can be reassembled by reversing the disassembly procedure Therefore no assembly 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 440 640 740 Chapter 4 Disassembly and Assembly Disconnect the pow
51. 0 Revision A The following three figures show the sensor circuits Out of the data such as EPW with IEEE 1284 Nibble mode to be returned to the host the data to indicate ink consumption is calculated and managed by the IC 2 counter of the firmware Therefore it is omitted here E05B43 Figure 2 24 Figure 5 24 Sensor Circuit for Stylus Color 640 Figure 2 23 Figure 5 23 Sensor Circuit for Stylus Color 440 IC 2 E05B588 SWAO Figure 2 25 Sensor Circuit for Stylus Color 740 Chapter 2 Operating Principles 69 EPSON Stylus Color 440 640 740 Revision A 2 2 4 3 EEPROM Control Circuits The EEPROM of Stylus Color 440 640 740 has following contents Gate array controls operations of reading data when the power is on and writing data when the power is off m Ink consumption Bk CMY m CL counter Various cleaning operations that are previously done are memorized Destination information Information of various adjustment values Bi D VH voltage etc CPSI pass word Other various setting values by the user EEPROM is connected to the Gate array by 4 lines and performs following functions The figure below shows EEPROM control circuit Figure 2 27 EEPROM Control Circuit Stylus Color 640 m CS Chip selection signal m CK Data synchronism clock pulse H DI Data writing line serial data at power off m DO Data reading line serial data at power on Figure 2 28 EEPROM Control Circuit for Stylus Color 740
52. 2 14 Cap Mechanism and Operation Principle Chapter 2 Operating Principles 55 EPSON Stylus Color 440 640 740 2 2 Electrical Circuit Operating Principles ee 440 640 740 contains the following three electric circuit GE SE E GE 5 V DC O Electronic Boards for Stylus Color 440 are Main C206 Main B C255 Main Board oo Power Supply C206 PSB PSE Board Panel C206 PNL Board O Electronic Boards for Stylus Color 640 are Main C256 Main Main Board CR Motor Power Supply C206 PSB PSE Board Panel C206 PNL Board O Electronic Boards for Stylus Color 740 are PF MOTOR Main C257 Main Main Board ani Motor Power Supply C257 PSB PSE Board Panel C209 PNL Board Refer to Figure 2 15 for the major connection of the 3 boards and their roles Head Drive Board Revision A C206 Main B C255 Main C256 Main C257 Main INK END counter and P off time counter BCO CCO Sensor ASF Lever Position Sensor Figure 2 15 Electric Circuit of Stylus Color 440 640 740 Chapter 2 Operating Principles 56 EPSON Stylus Color 440 640 740 Revision A 2 2 1 C206 PSB PSE and C257 PSB PSE Power Supply Board for Stylus Color 440 640 740 There are 2 types of power supply boards for Stylus Color 440 640 740 The main components of the boards are the same but the 5V regulator ICs which create steady 5V are different These boards are power supply board with a RCC switching regulator which generates 42VDC for drive part and 5VDC f
53. 23 2 No 4 GEAR 67 2 GEAR 34 No 3 COMBINATION GEAR 8 14 4 158 Chapter6 Maintenance Revision A EPSON Stylus Color 440 640 740 HOPPER ASSEMBLY FRAME ASF No 9 HOLDER PULLEY DRIVEN 159 Chapter6 Maintenance Download Service Manual and Resetter Printer at http printer1 blogspot com EPSON Stylus Color 440 640 740 Revision A A 1 Connector Summary This section gives information on connectors and their pin assignment Since all connectors and their pin assignments except for CN8 printhead are common for Stylus Color 440 and Stylus Color 640 they are included in one section Section A 1 1 Refer to Section A 1 2 for the connector summary for Stylus Color 740 Each section includes the following information mm Section A 1 1 Stylus Color 440 640 m C206MAIN B C255MAIN Stylus Color 440 m C256MAIN Stylus Color 640 m C206PSB PSE Stylus Color 440 Stylus Color 640 m Printer Mechanism mm Section A 1 2 Stylus Color 740 m C257MAIN m C257PSB PSE m Printer mechanism Chapter 7 Appendix 161 EPSON Stylus Color 440 640 740 Revision A A 1 1 Connector Summary Stylus Color 440 640 This section provides information on connectors in the main units of the Stylus Color 440 and Stylus Color 640 Figure 1 shows how the main component units are connected AC C206MAIN B C206PSB PSE C255MAIN Control Panel Information co
54. 3 for Stylus Color 740 m Black 64 nozzles CMY 32 color nozzles for Stylus Color 640 m Black 144 nozzles CMY 48 color nozzles for Stylus Color 740 O Print direction m Bi direction with logic seeking O Print speed and Printable columns character pitch and print quality Refer to Table 1 2 and Table 1 3 Table 1 2 Character Mode Speed Model Name ea fo LQ Speed Draft Speed Stylus Color 440 10 80 200 CPS Stylus Color 640 10 80 200 CPS 400 CPS Stylus Color 740 10 80 200 CPS Chapter 1 Product Description 11 EPSON Stylus Color 440 640 740 Revision A e 180DPI 180DPI 110 16 mm r 7 9022 mm l me 2 2578 mm T 23 Ya M13 25 M14 Y2 27 Y3 Figure 1 1 Nozzle Configuration for Stylus Color 440 Figure 1 2 Nozzle Configuration for Stylus Color 640 Chapter 1 Product Description EPSON Stylus Color 440 640 740 Revision A Dl Feeding method 32 360 32 360 32 360 m Friction feed with ASF 12 360 112 360 O Line spacing m 1 6 inches or programmable at 1 360 inches only for Stylus Color 440 m 1 6 1 8 inches or programmable at 1 360 inches for Stylus Color 640 740 O Paper path m Cut sheet ASF Top entry Dl Feeding speed lt Stylus Color 440 640 gt m 190 ms 1 3 inch
55. 4 EPSON Stylus Color 440 640 740 Revision A Main menu Return Key Maintenance Head Cleaning CL2 Ink Charge Flag Reset A4 Check Pattern Adjustment Market Destination Check Head Voltage ID Input Head Angular Adjustment Transportation Liquid Charge Bi D Adjustment Protection Counter value Figure 5 5 Options in the Program and Keys to Use Chapter5 Adjustment 135 EPSON Stylus Color 440 640 740 Revision A 5 2 2 2 Entering the Main menu 4 Following screen appears Before performing any adjustment you need to enter the main menu however you may have to take the following extra steps before entering the main menu depending on the printer model name and mode name registration status m Registering the model name Section 5 2 2 2 1 actele e ee ed an m Setting the CG Section 5 2 2 2 2 Checking the model name now Therefore read the instructions carefully and take the appropriate steps 1 Connect the printer and PC and turn on the printer 2 Insert the disk for the adjustment program to the floppy disk drive Type SC440 SC640 or SC740 on the DOS or DOS prompt 3 Type the exclusive program name SC440 EXE SC640 EXE or SC740 EXE on the DOS prompt Figure 5 6 Initial Screen 1 The adjustment program name provided with each printer is shown mmm if the printer s model name has been registered go to Step 5 below For Stylus Co
56. 4 Disassembly and Assembly 114 EPSON Stylus Color 440 640 740 Revision A Head Cleaner Order of assembling the pump parts Figure 4 10 Component of Pump Assembly Chapter 4 Disassembly and Assembly 115 EPSON Stylus Color 440 640 740 4 2 4 4 Removing the CR Motor Assembly 1 Remove the housing Refer to Section 4 2 1 2 Rotate the gear 67 2 toward you and release the carriage lock mechanism then move the carriage to the center 3 Loosen the timing belt by pushing the driven pulley holder and remove the timing belt from the pulley on the CR motor 4 Remove two screws No 1 and remove the CR motor assembly After installing the CR motor assembly make sure that two protrusions on the motor bracket are aligned with the location holes in the frame Refer to Figure 4 12 Compression Spring 19 6 Driven Pulley Assembly Timing Belt To the Exterior of Side Frame To the Interior of Side Frame Driven Pulley Holder Figure 4 11 Removing the Timing Belt Chapter 4 Disassembly and Assembly Revision A R frame are in the holes CR motor assembly Make sure that protrusions of C of the frame when installing the Figure 4 12 Removing and Installing the CR Motor Assembly 116 EPSON Stylus Color 440 640 740 4 2 4 5 Removing the PF Motor Assembly For Stylus Color 740 1 2 Remove the housing Refer to Section 4 2 1 Remove the absorber tray assembly A Refer t
57. 5 11 Destination Setting Screen for Stylus Color 740 Chapter 5 Adjustment 139 EPSON Stylus Color 440 640 740 5 2 2 3 Initial Ink Charge Operation There is no ink charged in the ink path of a spare printhead and printer mechanism Therefore after you replaced any of the following units perform initial ink charge and return the printer after making sure that ink is ejected correctly from the printhead m After replacing the printer mechanism m After replacing or removing the printhead 1 Enter the main menu Refer to Section 5 2 2 2 2 Inthe main menu Figure 5 7 select Maintenance using the Up Down arrow key and the Maintenance Menu below appears MS MS DOS Prompt SC640 Moe Je E fs A Ink charge flag reset Transportation Liquid Charge Indication of the counter value for the waste ink pad Figure 5 12 Maintenance Menu of the Program Chapter 5 Adjustment Revision A 3 By using the Up Down arrow key select Ink Charge Flag Reset in the maintenance menu Figure 5 12 and the Initial Ink Charge Menu below appears MS MS DOS Prompt SC640 LE Lx Ame deele al Perform this operation after installing both new ink cartridges Initial Ink Charge Performing the initial ink chrge Total quantity of black ink absorption 2 29 ml Total quantity of color ink absorption 3 45 ml Figure 5 13 Initial Ink Charge Menu Before you set the initial ink charge flag replace the inst
58. 6 Size A4 200 sheets Photo Quality Ink Jet Paper S041061 Size A4 100 sheets Photo Quality Ink Jet Paper S041062 Size Letter Photo Quality Ink Jet Paper S041067 Size Legal Photo Quality Glossy Paper New S041126 Size A4 Release Photo Quality Glossy Paper New S041124 Size Letter Release Photo Quality Glossy Film S041071 Size A4 Photo Quality Glossy Film S041124 Size Letter Photo Quality Glossy Film S041107 Size A6 Ink Jet Transparencies S041063 Size A4 Ink Jet Transparencies S041064 Size Letter Photo Quality Ink Jet Card S041054 Size A6 Photo Quality Ink Jet Card S041121 Size 5x8 inches Photo Quality Ink Jet Card S041122 Size 10 x 8 inches Photo Quality Self Adhesive Sheet S041106 Size A4 Chapter 1 Product Description 10 EPSON Stylus Color 440 640 740 Revision A 1 2 Specifications SEH Table 1 3 Graphic Mode Speed This section describes each specification for Stylus Color 440 640 and Horizontal 740 R solution Printable Area Available dot CR Speed 180 dpi 8 26 1488 20 IPS 1 2 1 Printing Specification 360 dpi 8 26 2976 20 IPS i 720 dpi 8 26 5952 20 IPS O Print method p m On demand ink jet MACH type One unit combined with black and CMY head O Nozzle Configuration m Refer to Figure 1 1 for Stylus Color 440 O Nozze coniguranon m Refer to Figure 1 2 for Stylus Color 640 m Black 64 nozzles CMY 21 nozzles for Stylus Color 440 m Refer to Figure 1
59. 68o a da i aie npr tox iso 2 cea 0000 amp 1614 DIER SP x 1 i a D d plo 47_pwlo 2 Ato 23 d az puja SIS E ae Bits TE ATO Due Duo t E 2 2 Dut ce7 2124 pps moi m om plie amio Aen a7 ERE E tev pra Zen 2 AWE 45 o 25 i ica Lise Ei 29 TEEI 2 vo E Ei v i L Bt Har i 126 se pi Et za 4 Tae Be pno 135 SE DH tat 1 Zi FETE ab oR 59 O PFOA L on SR 2 Gore Pr Moton 97 a ra O PF 8 aa 3 LS Lo ge 126 AAA 22 a W SC Gi g za 34 INTXERB E INTRAADY S AGNO D I 17 ANO Mi 3 R ANS i AN WOTOUT X STBIN BR e PE S pa Ee Lich LIN 3 Pea aa Fa WW a ai GEN p83 i Win paa 39 vec cs R x00 SS S pao 2 Ne SK pat fae o 3 pea tet onc o EEE EI a eno pol pes H Cl tes pre pal e P75 pem ad Aaen TE Ei 374e N yd sell D i 7 l F lun maes 8 2 ca afu 4 enn 510 gt 2 cle d t Ji AR s 3BTOANFU ETA al BEI F Ki SR i K B43 App 20K er dusa a 8007 0300 MEZOID L 77 E SE T Rua 3 a m d e IK EME 3 3 mo Sg BSI EEEN S RE a Fer 1 27 afet 2 10K yw i ELI moto 2 D W GE xD O 77 GR g 4 E z Bian d SR P N ch AA aroi E wl 77 sno Dein 7 ah Eu ST Bonen GN ii o d N Ra AAA 3 9K AAA BM1 ApS 1K FNE i x Di 4 zeta Sin Sg dd e a d a OL Cp 00000 JARD SRE o 5 enok 2 a7 7 aay
60. FA3635P is Stylus Color 740 Replace IC51 dead e Check the switching SE Note Pin 8 waveform of A ET alea L4962 is used for Stylus IC51 Color 440 640 Pin 8 i e FA3635P is used for hL J Chapter 3 Troubleshooting 90 EPSON Stylus Color 440 640 740 Revision A 3 4 Unit Repair of the Main Board Note The Main board equipped with each printer is as follows m Stylus Color 440 C206MAIN B C255MAIN m Stylus Color 640 C256MAIN m Stylus Color 740 C257MAIN This section describes the problems related to the main controller board The table below provides various symptoms likely causes and checkpoints The check points refer to waveforms resistance and other values to check to evaluate the operation of each component Chapter 3 Troubleshooting 91 EPSON Stylus Color 440 640 740 Revision A The printer does not operate at all Continues to the next page CPU does not operate Continues to the next page Table 3 6 Unit Repair of Main Board The reset circuit does not operate Stylus Color 440 640 Replace IC9 Check the waveform of the Stee Ce HAE 5V and Reset signal A bt aa ut ea a IC9 Pin 7 6 pin TP bi LU NL F S Tek eu EAKDET 28hs 28mb Stylus Color 740 Replace IC8 Check the waveform of the e aviTa apu oLYp 247 6 s Ar a ams 5V and Reset sign
61. H 00H 00H 77H 00H 00H 5AH 00H 00H 78H 00H 00H 5BH 00H 00H 79H 00H 00H 5CH Ink counter Rb 00H 00H 7AH 00H 00H 5DH 00H 00H 7BH 00H 00H 5EH Ink counter Ry 00H 00H 7CH 00H 00H 5FH 00H 00H 7DH 00H 00H 60H Ink counter A 00H 00H 2 7EH 00H 00H 61H 00H 00H 2 7FH 00H 00H 62H Power off time 00H 00H 2 1 Adjusted at factory 63H 00H 00H 2 2 Initialized after panel initialization of EEPROM is performed 64H CL time 00H OOH 2 3 BUSY signal delay time form fall edge of a STB signal 65H 00H EI Fast Maximum 1MB s Slow Maximum potas 4 Select IEEE 1284 transfer mode ECP or Nibble Gr accumulated oon oom 5 Enable or disable reverse transfer When disabled ignore SLIN signal 67H printing time 00H 00H 68H Reserved for ink 00H system 69H Reserved for ink 00H system Chapter 7 Appendix 177 EPSON Stylus Color 440 640 740 Revision A A 3 Circuit Board Component Layouts This section is composed of the following components layouts mm C206MAIN B Stylus Color 440 C256MAIN Stylus Color 640 C257MAIN Stylus Color 740 C206PSB PSE Stylus Color 440 640 C257PSB PSE Stylus Color 740 C206PNL Stylus Color 440 640 LILLI C209PNL Stylus Color 740 Chapter 7 Appendix 178 Revision A EPSON Stylus Color 440 640 740 SEN A dit n mai BORA ee Oe oct KR mo em TN A Be Sp 0 SN iD i R158 0000 CH Eer er Boge iy 8 ei gS Be 2 De ee eee CN al JS ss
62. JO So O PR D7 S 2 0000 eset ed al chee 7 ne 25 o si CL aaa ae E CHE goi HI R ER E 03 8 EAR 8 o Ho a d III WEE e Ls go E O o e RU RE RE SET ES ASSY 2828311 CG EPSON O Figure A 3 C206MAIN B Board Component Layout 1 2 Stylus Color 440 Chapter 7 Appendix 179 EPSON Stylus Color 440 640 740 Revision A 3 A OS Wd d CR i D i A oy 1 ou nf tos Or Figure A 4 C206MAIN B Board Component Layout 2 2 Stylus Color 440 Chapter 7 Appendix 180 EPSON Stylus Color 440 640 740 Revision A OOOO Idee Lia ma ET ck n EE IL cee E C256 MAIN S a on Tal Figure A 5 C256MAIN Board Component Layout 1 2 Stylus Color 640 Chapter 7 Appendix 181 EPSON Stylus Color 440 640 740 Revision A C co 3 40 AS BB emt 82838 il a UL Figure A 6 C256MAIN Board Component Layout 2 2 Stylus Color 640 Chapter 7 Appendix 182 EPSON Stylus Color 440 640 740 Revision A seid ne socio C257 MAIN CRE assy 2227725 aa Figure A 7 C257MAIN Board Component Layout 1 2 Stylus Color 740 Chapter 7 Appendix 183 EPSON Stylus Color 440 640 740 Revision A Sia ii Dz e GT EM a 8 T d F ii H Sc i pei A A di 0 i On ip Me y ve RL 7 i P i LU en e OR GO ms Ar d 0 dE m vi a 8 HU o 2 i E y 2027724 00 es SOLE a Figure A 8 C257MAIN Board Component Layout 2 2 Stylus Color 740 Chapter 7 Appendix 184
63. ON Sans Serif H 10 5pt 8pt to 32 pt every 2 pt unit m PC437 US Standard Europe m PC850 Multilingual NOTE The above typeface has 4 variations individually as follows D Typeface EPSON Roman EOSON Roman bold EPSON Roman Italic EPSON Roman bold Italic m Bit map LQ font EPSON Courier 10CPI lt Stylus Color 740 gt O Control code lt Stylus Color 440 640 gt m ESC P Raster m EPSON Remote command m Standard version 11 character tables Italic table PC437 US Standard Europe PC 850 Multilingual PC860 Portuguese PC861 Icelandic PC863 Canadian French PC865 Nordic Abicomp BRASCII lt Stylus Color 740 gt Reman toe auld m ESC P2 and ESC P Raster m NLSP Version 30 character tables m EPSON Remote command Italic table PC437 PC437 Greek PC 850 PC 852 PC853 PC855 PC857 PC860 PC861 PC865 PC866 ISO8859 7 ISO Latin 1T Chapter 1 Product Description 14 EPSON Stylus Color 440 640 740 Revision A 1 2 2 Paper Specification 1 2 2 2 Transparency Glossy Paper This section describes the printable area and types of paper that can be Size used in this printer A4 Width 210mm 8 3 x Length 297mm 11 7 Letter Width 216mm 8 5 x Length 279mm 11 0 1 2 2 1 Cut Sheet Thickness Size 0 075mm 0 003 0 085mm 0 0033 A4 Width 210mm 8 3 x Length 297mm 11 7 WAR A Letter Width 216mm 8 5 x Length 279mm 11 0 NOTE Transparency printing is only available at
64. Revision A EPSON Stylus Color 440 640 740 8 An 88 Z98EZEZ ASSY C206PSB Board Component Layout Stylus Color 440 640 Chapter 7 Appendix DUSE D E BOA 89 7 T d o ga vsaczaz ASSu Figure A 10 C206PSE Board Component Layout Stylus Color 440 640 185 Revision A EPSON Stylus Color 440 640 740 Qa 8222202 ASSU EEE ENT Figure A 12 C257 PSE Board Component Layout Stylus Color 740 Figure A 11 C257 PSB Board Component Layout Stylus Color 740 186 Chapter 7 Appendix EPSON Stylus Color 440 640 740 Revision A fan LED Lem Ka om FN pepeni JP E Ser C206 PNL goo ler Esc 1 J2 SE M Fw es MAcm p2x SWO LED2 ASSY 2023066 00 Figure A 14 C209PNL Component Layout Figure A 13 C206PNL Component Layout Chapter 7 Appendix 187 EPSON Stylus Color 440 640 740 Revision B A 4 Exploded Diagrams This section contains the following exploded diagrams mm Exploded diagram for Stylus Color 440 1 3 2 3 3 3 mm Exploded diagram for Stylus Color 640 1 3 2 3 3 3 mm Exploded diagram for Stylus Color 740 1 3 2 3 3 3 Chapter 7 Appendix 188 EPSON Stylus Color 440 640 740 Revision A i 181 RELAIS 124 LE 124 182 for LATIN EWS 5 410 for RUSSIA y gt 103 EXPLODED DIAGRAM FOR EPSON STYLUS COLOR 440 1 3 REV 1 0 10001 Chapter 7 Appendix 189
65. SERVICE MANUAL Color ink jet printer EPSON Stylus Color 440 640 740 4009667 Notice O 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 O The contents of this manual are subject to change without notice O All effort have been made to ensure the accuracy of the contents of this manual However should any errors be deteced SEIKO EPSON would greatly appreciate being informed of them O 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 EPSON 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 Download Service Manual and Resetter Printer at htto printer1 blogspot com 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 pr
66. SON Stylus Color 440 640 740 2 Paper pick up mechanism When the Load Eject switch is pressed or printing order is input the carriage unit moves until the left edge and collides with paper pick up trigger lever When the carriage collides with this trigger level a planetary gear located on the same axis is also pushed at the same time and conveys the motive power on the platen to the adjoined gear line side for ASF drive Paper Pick Up Trigger Lever ASF Roller Drive Gear Eject Roller Drive Gear Eject Roller Transmission Gear ASF Roller Transmission Gear Platen Roller Transmission Gear Platen Roller Drive Gear Figure 2 8 Paper Pick up Mechanism 3 Paper feed mechanism After papers in the ASF receive controls from pick up and multi feed prevention mechanism they are sent to the printer inside The papers picked up by paper roller in the ASF goes to between platen and roller support Also the eject roller pushes out the paper completely until the end and the roller support drops the paper in the eject tray The eject roller is driven with an eject paper notched roller as pair where is located on the paper eject roller Chapter 2 Operating Principles Revision A Paper eject notched roller solves the deflection of paper that is in the between platen eject notched roller and paper eject roller and always keep a certain space between print head and paper surface For an unique point the securing angle of Eject Notc
67. T s the connected correctly YES control pane 3 2 5 Control panel operation is abnormal Connect the control panel correctly Is the problem solved YES Replace the control panel Is the problem solved YES NO e Replace the main board Flow Chart 5 87 EPSON Stylus Color 440 640 740 Revision A 3 3 Unit Repair of Power Supply Board Note The power supply board equipped with each printer is as follows m Stylus Color 440 C206 PSB PSE m Stylus Color 640 C206 PSB PSE m Stylus Color 740 C257 PSB PSE This section describes the problems related to the power supply board The table below provides various symptoms likely causes and checkpoints The checkpoints refer to waveforms resistance and other values to check to evaluate the operation of each component Chapter 3 Troubleshooting 88 EPSON Stylus Color 440 640 740 Revision A Table 3 5 Repair of the C206 C257 PSB PSE Board The printer does 42V line is dead F1 is open Check F1 by using a Replace F1 not operate at all tester ER AV15 8 8 T 0 eas RE iii H LH H LL
68. TE47 7 m m a 8 In eg 77 1 R30 ann 10K 3 dun AB cne i W 2 FF MOTOR 4 E 7 vec VEE vec Ja VEG vor ag Avec S E E d A vas aura 40 vas 124 E 3 IS ai 15 vss 123 H ours vas 15s e ISS LEE PHASE vss gi 2 AEF vss 148 parai HE vss jaa paria nea Les rn Ge vss 443 DATAA 238 S ZE n END ves 1421 DATA ZA GN bes 440 para SC SENSE GNO De SE RITES L DATAZ on 13956315 A Ge A Txt res Mess 7 o a RAK mu i al rx ez Mae D paou mz mus S 150 Neue Ste 12 D az 1 8 818 Wi t 10 ou O24 ne ot ZO THM 7 EI c78 css c c34 Li 1800p 1000p 1000p m 77 m Ei DN sera tov A s5355 v ag gg ge 4 cs Aan ernn e Ti TT op Mc us COLOR 740 i J COOC OLODO COO O e 49 n JARD D FAMILIE I gt 90900000000009 WESS2rP Boa BOARD 22 gene 3 22999999999999 i e gt 55565600656 D Shee EPSON Stylus Color 440 640 740 Revision B Ti PT 63 cna 2 OB4 c15 FSKQ100 a RER 2200P 1 2KV GNO L51 PI10 471K o cs o 91 2w Lei 2200u 50v ce 1000P c14 F re oa FE Aia z 2200P 200K 0 5W 11E0S04 asi 4 z VE Ga 750K 0 5W FG 2200P 2200P Alt 15K 0 033U FG o oiu 390 0 5H Ss ase 11EQs06 150 ca 2PA1015Y a ae 330U 6 3V o Au Se nas 0 M 220u 10v z088 100 HZSSALL 4 Ras aaa Li NY K1398 la Gas 470K sst0v 06100 OTA113ZSA acc D s 10ELS2 ci 086 1180606 o a2u Ra Pet
69. VALI UI Sau PAMALE Sub E Transformer coils are open Check the waveform at the drain of Q1 Replace T1 Switching FET Q1 is Check drain side Replace Q1 dead TEKTRONIX 2238 DIER 4T 8 BA RU H Lf UI II sav SAMPLE Sub Tek Feed back transistor Q2 Check collector side Replace Q2 or Q3 Q3 are dead TEKTRONIX 2238 DIER qt 6 edub SAU ALA ALA AAT APA NY VIV V Tek Sau SAMPLE Sub 42 V line is abnormal Check the following parts Replace suitable e ZD87 ZD83 paris e ZD51 ZD81 ZD86 e PCI Chapter 3 Troubleshooting 89 EPSON Stylus Color 440 640 740 Revision A Table 3 5 Repair of the C206 C257 PSB PSE Board Continued The printer does not operate at all 5V line is dead Stylus Color 740 AMPLE Tek IC51 L4962E FA3635P is Stylus Color 440 640 Replace IC51 dead e Check the oscillation Note Pin 5 waveform of ie deems L4962 is used for Stylus IC51 am su Color 440 640 CT NTN N FA3635P is used for Pins SPE PP Stylus Color 740 eu AMPLE Sup E e Check the switching Pin 7 waveform of EE IC51 DER dl T ofoga Pin 7 g J 2av AMPLE Sub La IC51 L4962E
70. a aa 91 Repair of the Printer Mechanism ccmmmnnee nenea nea ana 96 Disassembly and Assembly EE aluat i dat d 100 Precautions for Disassembling the Printer 100 MOONS Peau E E Ras A te pb Aa ata t a aia dde a anti a 101 Specification for Screws mmm nenea ana nana 102 Service Checks After Repair eee ana nnae 103 Download Service Manual and Resetter Printer at http printer1 blogspot com Disassembly Procedures eee 104 Removing the Housing 105 Removing the Board Assembly 106 Removing the Operation Panel 108 Disassembling the Printer Mechanism 109 Adjustment OVErVIOW EE EL Tai 0 en sation att ea ced das tai ag ao aa aa da T 130 Required Adjustments AAA 130 Adjustment Tools Required 131 AdJUStMe nt cece eee ee d a ai i rm ee ee near 132 Parallelism Adjustment nnae e eeaaa 132 Adjustment by Adjustment Program 134 Maintenance OVervieW sania hi oe ea Me EEN def ad a ee et ee at eu 154 GIS ANNO RE EH 154 Service Maintenance 154 LubriCation sites memes M Hib Wat Va n aa a 155 Appendix Connector Gummanm aaa aaa nana aaa 161 Connector Summary Stylus Color 440 640 162 Connector Summary for Stylus Color 740 166 EEPROM Address Magi ass in aa a m nn ati e 169 EEPROM ADDRESS Map Stylus Color 440 640 169 EEPROM Address Map S
71. al CIChecked LINot necessary On line test Was the on line test successful DIChecked LINot necessary Print head Is ink ejected normally from all nozzles CIChecked LINot necessary Carriage Does the carriage move smoothly OChecked LINot necessary mechanism Any abnormal noise during movement DIChecked ONot necessary Any dirt or obstacles around the shaft of carriage HChecked ONot necessary guide Is the CR motor at the correct temperature OChecked LINot necessary not over heating Paper feeding Is paper fed smoothly CIChecked LINot necessary mechanism Does paper get jammed CIChecked LINot necessary Does paper get skew during paper feeding DIChecked LINot necessary Are papers multi fed DIChecked LINot necessary Does the PF motor get overheated OChecked LINot necessary Abnormal noise during paper feeding DIChecked LINot necessary Is the paper path clear of all obstructions OChecked LINot necessary Adjustment Specified adjustment items Are adjusted conditions all right DIChecked LINot necessary Lubricant Specified lubricated item Is lubrication applied to the specified locations OChecked LINot necessary Is the quantity of lubrication adequate OChecked LINot necessary Function ROM version Newest version OChecked LINot necessary Shipment package Ink cartridges are the ink cartridges installed correctly OC
72. al State Figure 2 4 Print Head Ejecting State Chapter 2 Operating Principles 46 EPSON Stylus Color 440 640 740 Revision A 2 1 1 3 Carriage Mechanism Carriage mechanism is to drive the carriage with print head mounted from left to right or vice versa The carriage drive motor in these printers are a 4 phase 200 pole stepping motor and is driven by 1 2 phase 2 2 phase and W1 2 phase drive method for Stylus Color 440 460 and by 2 2 phase 1 2 phase W1 2 phase 2W1 2 phase and 4W1 2 phase drive method for Stylus Color 740 This stepping motor allows the carriage to move freely to the particular positions which is necessary for various operation such as paper feeding ink absorbing flashing ink exchange and cleaning operations The tables below show carriage motor specifications and motor controls at each mode Table 2 1 Carriage Motor Specifications Description 4 Phase 200 pole Stepping motor Items Motor type Drive voltage Range 42VDC 5 7 8 Ohms 10 per phase under 25 C environment Internal coil resistance Driving Speed frequency Rangel csp Hz 5 60 340 4080 Control method Bi Pola Drive Table 2 2 Motor Control at Each Modes Stylus Color 440 640 Ke Drive Speed Drive frequency e Printing mode CPS PPS Drive method e W1 2 2 2 1 2 High Speed Skip 340 4080 phase drive Normal Printing 200 2400 W1 2 2 2 phase drive Capping 80 960 W1 2 2 2 pha
73. al lavata apu L SAUF IC8 2 pin Pin 7 P i a gat D D D BE E e E Tek ZU EAKDET 2 ms 28mp Control ROM D RAM and Mask ROM are not selected correctly or it s dead Continues to the next page Stylus Color 440 If you can not find the waveform at 88 pin of IC1 the IC1 is dead and if you can not find it at 20 pin of IC3 or 26 pin of IC4 the IC3 or IC4 is dead Stylus Color 440 Replace IC1 IC3 or IC4 Stylus Color 640 If you can not find the waveform at 97 pin of IC1 the IC1 is dead and if you can not find it at 13 pin of IC3 the IC3 is dead If you can not find the waveform at 98 99 pin of IC1 the IC1 is dead and if you can not find it at 27 pin of IC5 and at 14 pin of IC6 the IC5 or IC6 is dead Stylus Color 640 Replace IC1 IC3 IC5 or IC6 Chapter 3 Troubleshooting 92 EPSON Stylus Color 440 640 740 Revision A Table 3 6 Unit Repair of Main Board Continued Continued Continued Stylus Color 740 Stylus Color 740 The printer does not CPU does not operate e If you can not find the waveform at 2 128 127 pin of IC1 Replace IC1 or IC2 operate at all the IC1 is dead and if you can not find the waveform at 85 pin of IC2 the IC2 is dead e If you can not find the waveform at 13 pin of IC3 the IC3 is Replace IC3 dead e If you can not find the waveform at 27 pin of IC4 or IC5 the Replace IC4 or ICS IC4
74. alled cartridges with new ones because the ink amount used for the initial ink charge operation is so large 4 Press the Enter key while the reverse cursor is indicating Yes 5 Turn off the printer and back on after 10 seconds and the printer automatically enters the initial ink charge sequence It takes 90 seconds for this operation to complete the whole sequence 140 Revision A EPSON Stylus Color 440 640 740 5 2 2 4 Head Cleaning Operation Different from the previous models Stylus Color 440 640 and 740 have no dummy cleaning sequence called CL3 which was performed to prevent ink from being unnecessarily consumed when cleaning was repeated without any printout However Stylus Color 440 640 740 is alternatively equipped with the strongest cleaning sequence CL2 contained in this adjustment program With this sequence you can forcibly solve the clogged nozzle problem caused by viscous ink If you can not recover the clogged nozzles despite you performed CL2 operation enter the Initial ink charge sequence by referring to Section 5 2 2 3 Chapter5 Adjustment 1 Enter the main menu Refer to Section 5 2 2 2 2 Apply the Maintenance menu Figure 5 12 3 By using the Up Down arrow key select Head cleaning and the following screen appears MS DOS Prompt SC640 Auto d alle a je A lt lt Powerful cleaning CL2 will be done in this mode gt gt Esc Quit Up Down ect Enter OK F
75. aste Ink Large 720 Compression Spring 1 17 753 Tray Absorber 721 Tension Spring 0 62 754 Spacer Tray 722 Lever Paper Return Right 755 Bushing Fixing Shaft Left 723 Tension Spring 0 294 756 Paper Support Sub Upper Chapter 7 Appendix 199 EPSON Stylus Color 440 640 740 Revision B A 5 2 Part List for Stylus Color 740 Table A 40 Part List for Stylus Color 740 1 4 Table A 41 Part List for Stylus Color 740 2 4 100 Housing 135 Spacer Housing Panel 101 Cover Printer 180 Label Caution 1 102 Paper Support Assembly 181 Label Accessory 103 Stacker Assembly 183 Label Lever Cartridge Black 104 Panel Assembly 184 Label Lever Cartridge Color 105 Shield Plate Panel 200 Board Assembly Main 106 Housing Panel Left 300 Board Assembly Power Supply 107 Button P S B 330 Harness 108 Groundign Plate 400 Power Cable Assembly 109 Cover Shield Plate M B Right 450 Board Assembly Panel 111 Cover Cable 500 Printer Mechanism 112 Cover Inlet Upper B 501 Frame Assembly Left 113 Cover Inlet Lower B 502 Motor Assembly PF 114 Shiled Plate M B 503 Spur Gear 23 2 115 Logo Plate 504 Combination Gear 16 40 8 116 Housing Sub Right B 505 Frame Right
76. board Standard There is no IC6 on C257 Main board NLSP There is IC6 on C257 Main board m On the other hand if you set the destination to Standard despite your Stylus Color 740 supports NLSP characters they will not be used m Even though your spare C257 Main board is a NLSP version it has already been set as a standard version in the EEPROM Therefore you have to set it as a NLSP version in the EEPROM after installing a new NLSP version board with IC6 mounted Sg m Do not select NLSP unless your Stylus Color 740 Chapter 5 Adjustment Revision A 1 Enter the main menu See Section 5 2 2 2 2 Apply the adjustment menu The following screen appears Head Voltage ID Input Head Angular Adjustment Print Check Pattern Bi Directional Adjustment Esc Quit Up Down arrc ct Enter OK Figure 5 19 Adjustment Menu of the Program 3 By using the Up Down arrow key select Market Destination Check The following screen appears revious Enter OK Figure 5 20 Market Destination Checking Screen 144 EPSON Stylus Color 440 640 740 Revision A 4 Press the Enter key and the screen below appears The terms World and Standard show the current value set in the destination and CG addresses in the EEPROM Market destination is World Standard Figure 5 21 Market Destination Confirmation Menu 5 You can return to the adjustment menu by pressing the Esc key twice Chapter 5 Adjustment 145
77. board and IC 12 13 A3956 on C257 Main board are used for driving PF Pump motor In the IC Bi pola drive PWM current control type is performed making it possible to provide stable current to each phase of motor Also it makes possible to change over the reference voltage as drive current settings by making few combinations using current setting ports input However firmware does not support Micro step in the Stylus Color 440 640 740 The figures below show connection diagram of PF Pump motor drive circuit Chapter 2 Operating Principles Revision A Figure 2 36 PF Pump Motor Drive Circuit for Stylus Color 640 76 EPSON Stylus Color 440 640 740 Revision A Figure 2 37 PF Pump Motor Drive Circuit for Stylus Color 740 Chapter 2 Operating Principles 77 EPSON Stylus Color 440 640 740 Revision A 2 2 4 8 CR Motor Drive Circuit IC14 LB1845 on C206 Main B C255 Main board IC14 UDN2917 on C256 Main board and IC11 LB1847 on C257 Main board are used for driving CR motor In the IC Bi pola drive PWM current control type is performed making it possible to provide stable current to each phase of motor The figures below show carriage motor drive circuit Figure 2 38 Carriage Motor Drive Circuit for Stylus Color 440 Chapter 2 Operating Principles 78 EPSON Stylus Color 440 640 740 Revision A UDN2917 IC15 Outi A Out1B Out2A Out2B EISE 5 Figure 2 39 Carriage Motor Dri
78. c procedures for each adjustment required for Stylus Color 440 640 740 5 2 1 Parallelism Adjustment When replacing the carriage assembly or removing it during printer mechanism disassembly perform the parallelism adjustment during assembling and set the standard distance from the surface of the printhead to the paper surface assembly and rib surface of the front paper guide B M Be careful not to leave any mar or dirt on the surface of the printhead Never use a rusty or dirty thickness gauge Also do not push the thickness gauge hard against the head Or M Do not scratch the special coated surface of the PF roller Right Parallelism Adjustment 1 Install the parallelism adjustment bushing for right and left frame and set them on the peaking of the upper frame side so that they match with the standard mark of parallelism adjustment bushing 2 Set the PG lever front Gap is small 3 Move the carriage to the center and set the thickness gauge on the fixed position of front paper guide B as you can see in the figure 4 1 on the next page 4 Move the carriage to the position that the printhead overlaps the thickness gauge Chapter5 Adjustment rib of the front paper guide B m When you move the carriage move it pulling the timing belt with your hand m Put the thickness gauge on the flat side of the POINT 5 Move the right parallelism adjustment bushing to the rear until the thickness gauge moves wit
79. ce Request aaa 36 Fatal TEE 36 Print r Initialization LS sr ia nn de e 37 Initialization Settings 37 Main Components ee nenea nea anna amana ana ana 38 Printer Mechanism ts aci daia a a at a a ti a 38 C206 Main B Board Stylus Color 440 39 C256 Main Board Stylus Color 640 39 C257 Main Board Stylus Color 740 40 Power Supply Board C206 PSB PSE Stylus Color 440 640 C257 PSB PSE Stylus Color 740 40 C206 PNL Board Stylus Color 440 640 41 C209 PNL Board Stylus Color 740 41 Operating Principles METTEG incat aa aa Near en Te es a Oa da Da dm aula ca 43 Printer Mechanism 44 Electrical Circuit Operating Principles 56 C206 PSB PSE and C257 PSB PSE Power Supply Board for Stylus Color 440 640 740 nenea ire 57 C206 Main B C255 Main for Stylus Color 440 60 C256 Main for Stylus Color 640 62 C257 Main for Stylus Color 740 64 Troubleshooting Troubleshooting cico ege hante a nn a 82 Unit Level Troubleshooting eee nenea nenea anna 85 Printer does not operate at power on 85 Error is detected ie ceri ice aa e a element 86 Failure occurs during printing nenea amane ana 86 Printer does not feed paper correctly cemmneeeee nenea 87 Control panel operation is abnormal sseeseeeseeeseeseeereeereseeeeen 87 Unit Repair of Power Supply Board 88 Unit Repair of the Main Board mm nn nene
80. ce the CR motor Abnormal carriage operation during printing Carriage movement is not smooth Check whether the carriage moves smoothly when moved manually Clean and lubricate the carriage guide axis Check tension of the timing belt Adjust tension mechanism or exchange it Check if there is any foreign substances in the carriage path Remove any foreign substances Printing is not performed The carriage moves but no printing is performed Head FFC is out of connection Check if the head FFC on the board or carriage is connected surely Connect the FFC properly The FFC is disconnected inside Check the FFC by using a tester Replace the FFC I C is defective Install a new I C and perform the self test Replace UC Head unit is defective If the condition does not improve even after 2or 3 times cleaning operation replace the head unit and perform the self test Replace the head unit Chapter 3 Troubleshooting 96 EPSON Stylus Color 440 640 740 Revision A Abnormal printing Only a particular dot causes abnormal printing Table 3 7 Repair of the Printer Mechanism Print head surface is not clean dot missing Perform the cleaning operation several times and check printing Perform the cleaning The head unit is defective Perform the cleaning operation several times and check printing If condition does not
81. cifications 30 minutes 3 60 minutes Normal x2 dot Normal vi det 4 90 minutes Ink life the same as before improved 5 120 minutes color the same as before becomes pale 6EH Stylus Color 440 0 Normal x2 dot 00H 00H Dot size for i rane dd 4 Table A 28 EEPROM Value and Dot Size Stylus Color 640 00H Value of EEPROM 6EH Dot Size Reserved 00H Normal x2 dot 6FH Reserved 00H i 01H Normal x1 dot 70H Password 7 5AH 71H OFH 72H to customized model string of counter 00H 00H 79H name strings of model field for 7AH to Device ID 7FH Chapter 7 Appendix 173 Revision A EPSON Stylus Color 440 640 740 A 2 2 EEPROM Address Map Stylus Color 740 This section provides EEPROM address map for the Stylus Color 740 EEPROM map in this section only applies to Stylus Color 740 de If you need EEPROM map for Stylus Color 440 640 return to Section A 2 1 They are combined in one table Chapter 7 Appendix Table A 29 Stylus Color 740 EEPROM Address Map QPIT Factory Address Explanation Setting Settings Settings 00H Password 0 OFH 01H 5AH 02H EEPROM 41H mapping revision 03H Board ID 0 On board RAM is 8 Mbit 00H 1 1 On board RAM is 16 Mbit 04H CG 0 STD 1 NLSP 00H 1 05H Market ID 0 Standard World 00H 1 2 Custom 06H Custom EEPROM 00H 00H 07H sub number 00H 00H 08H 00H 00H 09H 00H
82. clusive 190 5mm 7 5 254mm 10 3mm 0 12 3mm 0 12 3mm 0 12 SC SCC Chapter 1 Product Description 18 EPSON Stylus Color 440 640 740 Revision A Envelope Table 1 6 and Figure 1 5 show the printable area for envelopes Paper Size Table 1 6 Envelopes Margin RM BM min Bi 5 14mm 0 54 10 28 mm 1 10 3mm 0 12 3mm 012 0 12 J 14mm 0 54 DL 7mm 0 28 3mm 0 12 3mm 0 12 0 12 3 14mm 0 54 C6 3mm 0 12 8mm 0 12 3mm 012 0 124 gt e LM RM Printable Area Chapter 1 Product Description Figure 1 5 Printable Area for Envelopes 1 2 3 1 Adjust Lever Setting The adjustment lever located on the right side dark blue under the printer cover needs to be set to the proper position according to the paper you print Refer to the Table 1 7 Also if there is any dirt caused by friction on the way or wrinkled paper this can be prevented by changing the lever position to rear position marked with in spite of paper types Table 1 7 Adjust Lever Setting Lever Position Clearance between head and platen 1 04mm p 1 74 mm 0 7 mm Zero Position NOTE Return the adjust lever to the zero position which is normal position after you finish printing on all media Leaving the lever in the plus position may cause the printed image to have gaps on ot
83. creen Chapter 5 Adjustment 147 EPSON Stylus Color 440 640 740 Revision A 5 2 2 8 Head Angular Adjustment 2 Apply the main menu Figure 5 21 See Section 5 2 2 2 During production slight variations are created in printheads and 3 By using the Up Down arrow key select Adjustment in the main carriage which are used as a printhead base If these differences are menu By using the Up Down arrow key select Head Angular not adjusted they can adversely influence the printhead angle and Adjustment The following screen appears color overlapping is not performed correctly and color white line problem occurs as a result Therefore in order to adjust the printhead angle correctly the exclusive lever for adjusting the printhead angle is installed on the side of the carriage unit By moving this lever you are able to adjust the printhead angle without removing the ink cartridge This adjustment is required in the following cases m When a printhead is replaced m When the carriage unit is replaced m When the angle adjustment lever is moved Print the check pattern in the adjustment program to determine the angle degree needed for the printhead Then move the adjustment lever Figure 5 26 Current Head Angular Confirmation Menu 1 in the carriage unit to set the printhead angle referring to the printed 4 Select Head Angular Adjustment Pattern and press Enter key The check pattern screen below appears and the printer pri
84. d Assembly Panel 111 Cover Cable 500 Printer Mechanism 112 Cover Inlet Upper B 501 Frame Assembly Left 113 Cover Inlet Lower B 502 Motor Assembly PF 114 Shiled Plate M B C 503 Spur Gear 23 2 115 Logo Plate 504 Combination Gear 16 40 8 116 Housing Sub Right B 505 Frame Right 117 Housing Sub Left B 506 Frame Top 119 Foot 507 Motor Assembly CR 121 CP Screw M3x6 508 Pump Assembly 122 CBS Tite Screw M3x6 509 Cap Assembly 123 CB O Screw 4x5 F Zg 510 Frame Bottom 124 CBS Tite Screw M3x10 511 Sheet Protection Head 125 CBP Tite Screw M3x8 F Zn 512 Frame Front 126 CBP Tite Screw M3x10 F Zn 513 Bushing Parallelism Adjustment Left Chapter 7 Appendix Part Name Part Name 514 Bushing Parallelism Adjustment 546 Paper Guide Right Right 515 Paper Guide Rear 547 Paper Guide Left 516 Roller PF 548 Shaft Paper Guide Upper 517 Compression Spring 5 85 549 Shaft Roller Driven 518 Bushing 12 Left 550 Roller Driven D 519 Lever Change 551 Torsion Spring 117 6 520 Spur Gear 26 4 552 Board Assembly PE 521 Spacer C ring 553 Holder PE 522 Scallop Sp AW 2x16 F B 554 Lever PE 523 Compression Spring 0 9 555 Torsion Spring 0 22 524 Spur Gear 67 2 556 Sheet Guide Plate Cable 525 Spacer Fixing Roller PF 557 Guide Plate Cable 526 Spacer Fixing Roller PF B 558 She
85. e 4 screws No 2 securing the housing and remove the housing Lift up and remove the housing pulling it towards you Since it collides with carriage Figure 4 2 Removing the Housing Chapter 4 Disassembly and Assembly 105 Revision A EPSON Stylus Color 440 640 740 4 2 2 Removing the Board Assembly Since the main board and power supply circuit board are built in a separate bracket from the printer mechanism remove the whole bracket from the printer mechanism NOTE The main board and power supply board equipped with each printer are as follows Stylus Color 440 C206MAIN B C255 Main C206PSB PSE Stylus Color 640 C256MAIN C206PSB PSE Stylus Color 740 C257MAIN C257PSB PSE 1 Remove the housing Refer to 3 2 2 2 Remove the 5 screws No 1 securing the M B Shield plate on the printer mechanism 3 Pull out the M B Shield Plate a little bit and remove cables which are hung on the A and B holders as you can see in the figure below Then take all cables out of connectors on the main board m Stylus Color 440 640 CN11 black CN4 yellow CN5 white CN3 black CN6 7 white CN8 FFC black m Stylus Color 740 CN11 black CN4 white CN5 yellow CN6 black CN 7 8 white CN9 FFC gray 4 After removing all the cables from the main board detach the Shield plate M B completely from the printer mechanism 5 When removing each board unit from the M B Shield plate remove the screws securing
86. e address 35H only applies to Stylus Color 440 171 EPSON Stylus Color 440 640 740 Revision A Table A 24 Table A 25 Stylus Color 440 640 EEPROM Address Map Continued Stylus Color 440 640 EEPROM Address Map Continued QPIT Factory E QPIT Factory Address Explanation Setting Settings Settings Address Explanation Setting Settings Settings 3EH CR phase of 00H 00H 48H Ink counter 00H 00H Home 49H CY total 00H 00H 3FH ERROR Number 00H 00H 4AH 1count 100 ng 00H 00H 40H Password 4 5AH 4BH 00H 00H 41H OFH i 4CH Ink counter Cm 00H 00H 42H Ink flags bit7 Reserved 00H 10H 4DH total 00H 00H pie black one time 4EH 1count 100 ng 00H 00H gg Ss ba ime f 4FH 00H 00H nna a require 50H Password 5 5AH S bit3 Reserved mei 51H OFH bit2 in cleaning seq bit1 black CL required lead ona oom d bitO color CL required 53H EE 00H 00H 43H Ink flags 2 bit2 00H 00H 54H 00H 00H YMC cartridge 55H 00H 00H changed and cleaned 56H Ink counter Csm 00H 00H O first cartridge 57H total 00H 00H 1 changed 58H 1count 100 ng 00H 00H bit1 Black cartridge Gel Ge Ge changed and cleaned SAH Ink counter 00H 00H 0 first cartridge 5BH Custodial 00H 00H 1 changed 5CH 1count 100 ng 00H 00H bitO 5DH 00H 00H Ge Ge SEH Reserved 00H A ii atau adi 5FH Reserved 00H
87. e at all or it occurs a abnormal noise Stylus Color 440 640 IC14 is dead Stylus Color 740 IC11 is defective Stylus Color 440 Check the waveform at 6 9 pin of IC14 Stylus Color 640 Check the waveform at 3 6 18 21 pin of IC14 Stylus Color 740 Check the waveform at 6 9 pin of IC11 TEKTRONIX 2238 AU 148 8 oLY 5 98hs Ar a aamb SAVE Lee 28 U EA Tek DET Sms Sms Stylus Color 440 640 Replace 1C14 Stylus Color 740 Replace 1C11 Printing is abnormal Printing is not execute Trapezoidal waveform does not output Stylus Color 440 Check the trapezoidal waveform at 3 pin of Q7 or Q9 on C206Main B C255 main board Stylus Color 640 Check the trapezoidal waveform at 3 pin of Q7 or Q9 on C256 Main board Stylus Color 740 Check the trapezoidal waveform at 3 pin of Q2 or Q3 on C257 Main board Stylus Color 440 Replace IC6 Q7 or Q9 Stylus Color 640 Replace IC7 Q7 or Q9 Stylus Color 740 Replace IC 14 Q2 or Q3 IC2 is dead Stylus Color 440 640 Check the clock signal of trapezoidal from IC2 at 80 pin of IC2 Stylus Color 740 Check the clock signal of trapezoidal from IC2 at 174 pin of IC2 TEKTRONIX 2238 AV 15 a apu DLyp 54 9 a s Jr S 4
88. e it out after releasing the fixed hook HP Detector Figure 4 24 Removing the HP Detector Chapter 4 Disassembly and Assembly 128 EPSON Stylus Color 440 640 740 Revision A 5 1 Overview Table below shows the actions taken and required adjustments in the order to be performed This chapter describes adjustments required when the printer is disassembled and assembled after repair Table 5 2 Actions Taken and Adjustment Required Content of Operation Adjustment Procedure 5 1 1 Required Adjustments 1 Removal of the printhead 1 Perform initial ink charge 2 Perform printhead angle adjustment Stylus Color 440 640 740 require the following adjustments Refer to 3 Perform Bi d Adjustment Table 5 1 Perform any necessary adjustment referring to the figures 2 Replacement of the printhead 1 Perform Vh voltage writing operation and procedures described throughout this chapter 2 Perform initial ink charge 3 Perform printhead angle adjustment l 4 Perform Bi d Adjustment Table 5 1 Adjustment Required 3 Replacement of the main board 1 Perform Vh voltage writing operation O AQ e e onaitio 2 Perform Bi d adjustment 1 Parallelism Adjustment e When you replace or remove the Carriage 3 Perform CG TAble setting only for guide shaft Stylus Color 740 When you move the parallelism adjustment 4 Replacement or Removal of the 1 Perform parallel adjustment bushing Carriage Unit 2 Perform printhead a
89. e of paper feed roller assembly a little move the LD roller shaft to the right and remove it from the left side of the ASF frame 8 Holding the hopper assembly by hand remove the cam part of hopper assembly from the right holes of ASF frame The steps by here should remove the right and left LD roller assemblies and the hopper assembly See the following page for Figure 4 16 Disassembly of ASF Assembly Chapter 4 Disassembly and Assembly 120 EPSON Stylus Color 440 640 740 Revision A Hopper Assembly Brake Lever Torsion Spring 41 2 Paper Feed Roller Assembly Shaft Fixing Bushing LD Roller Shaft Figure 4 16 Disassembly of ASF Assembly Chapter 4 Disassembly and Assembly 121 EPSON Stylus Color 440 640 740 Revision A 4 2 4 6 2 Removing the Right and Left LD Roller Assembly 1 Disassemble the ASF assembly and remove the paper feed roller LD Roller Cover assembly and hopper assembly from the ASF assembly Refer to Right Me Left Compression Spring 1 66 Section 4 2 4 6 2 Take out the right and left compression springs 1 66 from the back of the hopper assembly 3 Pull out the cam part of the hopper assembly from the hole located on the frame of the right LD roller assembly s 4 Pull out the LD roller shaft The paper feed roller assembly and b hopper assembly should be disconnected by now 5 Release the hook of LD roller assembly at the shaft hole of the paper feed roller assembly
90. e of this it is not necessary to adjust the adjustable VR on the board during production process Various electric charge discharge control signals are all processed in the HIC CR PF Motor Drive Circuit Constant current drive is performed by the HIC Out of this only CR Motor is controlled for Micro Step control and HIC becomes possible to flow the appropriate current value at each steps PF Motor has only 1 2 2 2 phase drive method Also bipolar drive is performed on the 4 cables individually 61 EPSON Stylus Color 440 640 740 2 2 3 C256 Main for Stylus Color 640 Various DC voltage generated on the C206 PSB PSE board is added various signals in order to drive the printer function on the C256 main board and the drive of CR PF Pump motor and printing head is performed Following figure shows the circuit diagram for Stylus Color 640 Head CR Motor CH 3 PF Motor P ROM l D RAM i CN1 Parallel cs co EEPROM Reset IC IC11 IC9 Motor i Driver E05B43 IC15 IC2 O 206 PNL 9 C206 Transceiver Q ASF Sensor IC16 S gt ws si LI PE Sensor SU Hp Sensor Figure 2 18 C256 Main Board Block for Stylus Color 640 Chapter 2 Operating Principles Revision A 62 EPSON Stylus Color 440 640 740 Revision A CPU The 16 bit CPU which is mounted on Stylus Color 640 is running at 25Mhz Gate array manages most of controls and monitors Likewise the Stylus Color the D RAM is applied for
91. e the lever Release the fixed hook of the PG lever support and remove the PG lever support and washer from the edge of the CR guide shaft Refer to the figure next page Remove one screw No 7 and rotate the right parallelism adjustment bushing so that it fits in the notch of the frame and remove it Remove CR assembly with the CR guide shaft Chapter4 Disassembly and Assembly Revision A bushing mark present location where the bushing is fixed on the frame so that you can omit gap adjustment after assembly E When installing the washer pay attention to its direction Convex side should face the right parallelism adjustment bushing side Refer to the figure below m When installing the PG lever refer to the figure below m When disassembling the right parallelism adjustment POINT PG Lever Insert this side to the hole on the right frame To the PG Lever Torsion Spring 63 7 PG Support Lever Figure 4 18 Installing the PG Lever 123 EPSON Stylus Color 440 640 740 Revision A Carriage Assembly Left Parallelism Adjustment Bushing CR Guide Shaft Right Parallelism Adjustment Bushing PG Support Lever Convex side should face to the bushing side during installation Figure 4 19 Removing the Carriage Assembly Chapter 4 Disassembly and Assembly 124 EPSON Stylus Color 440 640 740 4 2 4 8 Removing the PF Roller Assembly 1 2 Remove the housing Refer to S
92. each unit and shield plate main board 10 screws 7 No 1 screws 3 No 6 screws power supply board 4 screws No 1 Refer to the next page for the figure Also when removing the power supply board remove the cable connecting to the main board CN6 with lock device Chapter 4 Disassembly and Assembly CN7 8 10 for 740 have connector locks be sure to release the locks before removing the cables Also make sure to lock when connecting these cables m When connecting cables to the connectors the cables never cross with each other in this printer So if there are two connectors sitting next to each other the cable on the right should be connected to the right connector and the cable on the left should be connected to the left one fi m Since the connectors CN 6 7 10 for 440 640 and ADJUSTMENT REGURED Be sure to perform the following adjustments when the Main board is replaced 1 Head voltage ID Input Refer to Chapter 5 2 Bi D adjustment Refer to Chapter 5 106 EPSON Stylus Color 440 640 740 Revision A M B Shield plate M B Shield Plate Figure 4 3 Removing the M B Shield Plate Figure 4 4 Removing the Boards Chapter 4 Disassembly and Assembly 107 EPSON Stylus Color 440 640 740 Revision A 4 2 3 Removing the Operation Panel The panel board equipped with each printer is as follows Stylus Color 440 640 C206PNL Stylus
93. ead cleaner i Side Frame 1 Rotate the gear 67 2 and move the head cleaner to the printer rear 0 side 2 Move the carriage next to the head cleaner and make sure that BUSH PARALLEL ADJUST RIGHT overlap between the tip of the printhead and cleaner head is more than 0 5 mm 3 Then rotate the gear 67 2 and return the head cleaner to the front position LEVER PG PAPER GUIDE FRONT B lt Left Right HP si HP side Figure 5 2 Parallelism Adjustment LL Overlap 0 5mm or more Rib Avoid 2ribs from left Carriage Thickness Gauge Rib Avoid 1 rib at right end Assembly Put the gauge on a flat face Align the center of gauge and the ribs Printhead Nose face CLEANER HEAD ROLLER ASSEMBLY PF PAPER GUIDE FRONT B Figure 5 1 Setting of the Gauge at Parallelism Adjustment a OT Head SUNACR ANd Cleaner Blade Chapter5 Adjustment 133 EPSON Stylus Color 440 640 740 Revision A 5 2 2 Adjustment by Adjustment Program In this printer it is necessary to set the correct information for each printer mechanism in order to maintain consistent printing function and quality eliminating difference of each printer mechanism s characteristics Therefore in case that the combination of the printer mechanism and main board changes or the printhead is replaced during repair you must set and save the correct information to the main board using the exclusive adjust
94. eceded by DANGER Headings WARNING Signals a precaution which if ignored could result in damage to equipment The precautionary measures itemized below should always be observed when performing repair maintenance procedures 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 UNFAMILIER 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 2 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
95. ect Roller Carriage Lock Lever Cleaner Blade PF Pump Motor Pinion Gear Figure 2 10 Ink System Mechanism Chapter 2 Operating Principles 52 EPSON Stylus Color 440 640 740 Revision A 2 1 1 6 Pump Carriage Lock Head Cleaner Mechanism In the Stylus Color 440 640 740 there is no switch or mechanism to change over the pump paper feed mechanism Therefore whenever the paper feed pump motor rotate pump drive roller in the pump unit inside rotates However ink absorption non ink absorption are separated by the roller rotational direction Also even if the pump driver rotates toward ink absorption and the carriage position is in the false absorption position only driving in the pump mechanism is performed and actual ink attraction is not done Figure 5 2 shows process of conveying motive power to the pump drive roller See Figure 1 12 The process of conveying the motive power to the paper eject roller by rotating the pinion of PF motor is descried in figure 2 10 This motive power is conveyed to the Gear C through the Gear B In the figure above although the lever in order to drive Gear C carriage lock head cleaner mechanism is shown separately it is constructed as one unit Since the engagement of these two parts depends on the tension of the compression spring if the lever is burdened only Gear C and pump roller rotate and no more motive power is conveyed to the lever part Chapter 2 Operating Principles Axi
96. ection 4 2 1 Remove the carriage assembly Refer to Section 4 2 4 7 Remove three screws No 1 on the printer mechanism and disassemble the cable guide board Remove six upper paper guide assemblies releasing their springs from the hooks in the frame Remove the front paper guide B releasing the hooks Refer to next page Remove the paper eject roller assembly releasing the fixed locks located on the right and left edges of the shaft Release the fixed hook located on the left side of the PF roller assembly shaft and rotate it so that the protrusion on the shaft white and hole for receiving the shaft in the frame align Slide the PF roller assembly to the right and pull it out m During disassembly and assembly of the upper paper POINT guide assemblies since one of the upper paper guide assemblies to be installed on the right side overlaps with the PE detector lever pay attention not to damage the lever m Be careful not to damage the hook during disassembly and assembly of the front paper guide B m Becareful not to scratch the PF roller assembly during disassembly and assembly since its surface is specially coated to improve paper feeding black part m Be careful not to damage the combination gears Chapter 4 Disassembly and Assembly Revision A Upper Paper Guide Left Paper Guide Assembly Upper Paper Guide Shaft No 1 f Cable Guide Board D D D D D ai i i Fi
97. ectric strength AC1000 V rms 1 minute or AC1200 Vrms 1 second between AC line and chassis 1 2 8 Safety Approvals 220 240V version Rated voltage AC220V 240V Input voltage range AC198 264V 120V version Safety standard UL1950 with D3 CSA22 2 No 950 with D3 Rated frequency range 50 60Hz EMI FCC part 15 subpart B class B Input frequency range 49 5 60 5Hz CSA C108 8 class B Rated current 0 2 A Max 0 3A Power consumption Approx 15W ISO IEC 10561 Letter pattern 220 240V Energy Star compliant Safety standard EN 60950 VDE NEMKO Insulation Resistance 10M ohms min EMI EN55022 CISPR Pub 22 class B between AC line and chassis DC500V Dielectric strength AC1500 V rms 1 minute between AC line and chassis Chapter 1 Product Description AS NZS 3548 class B 23 EPSON Stylus Color 440 640 740 Revision A 1 2 9 Acoustic Noise Stylus Color 440 Approximately 45 dB Stylus Color 640 740 Approximately 47 dB 1 2 10 CE Marking 220 240 V version Low Voltage Directive 73 23 EEC EN60950 EMC Directive 89 336 EEC EN55022 Class B EN61000 3 2 EN61000 3 3 EN50082 1 IEC801 2 IEC 801 3 IEC801 A 1 2 11 Input Data Buffer 10 K byte for Stylus Color 440 32 K byte for Stylus Color 640 64 K byte for Stylus Color 740 Chapter 1 Product Description 24 EPSON Stylus Color 440 640 740 Revision A 1 3 Interface This printer provides parallel interface as standard 1 3 1 Paralle
98. epending on the printer model mm Section A 2 1 EEPROM map for Stylus Color 440 and Stylus Color 640 mm Section A 2 2 EEPROM map for Stylus Color 740 ji EEPROM map in this section only applies to Stylus Color 440 and Stylus Color 640 Be aware that some address rows are separated for Stylus Color 440 and Stylus Color 640 and each row stores the model specific information Therefore be sure to follow the correct row for the model If you need EEPROM map for Stylus Color 740 go to Section A 2 2 Chapter 7 Appendix 169 EPSON Stylus Color 440 640 740 Revision A Table A 20 Stylus Color 440 640 EEPROM Address Map A QPIT Factory Address Explanation Setting Settings Settings 00H Password 0 54H OTH OFH 02H Market 0 Word 00H 1 1 Japan 3 2 Custom MJ 3 Custom Stylus Color 4 Custom other name 03H 1st dot adjustment 40 lt n lt 40 00H 1 by 1 1440 inch 04H Bi D adjustment 36 lt n lt 36 00H 1 data by 1 1440 inch 05H Uni D adjustment 36 lt n lt 36 00H 1 data by 1 1440 inch 06H Stylus Color 440 00H S Reserved Stylus Color 640 0 STD 00H 1 CG 1 NLSP 07H Reserved 00H 08H Carriage speed 4 lt n lt 4 00H 1 adjustment data by G A timer unit 09H Stylus Color 440 00H Reserved Stylus Color 640 4 lt n lt 4 00H 1 Carriage speed by G
99. er 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 m 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 E Do not heat the battery or put it near fire m 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 m Do not charge the battery An explosion may be generated inside the battery and cause burning or explosion m Do not dismantle the battery The gas inside the battery may hurt your throat Leakage burning or explosion may also be resulted m Do not install the battery in the wrong direction This may cause burning or explosion m Danger of explosion if the battery is incorrectly replaced Replace only with the same or equivalent type recommended by the manufacture Dispose the used batteries according to government s law and regulations 100 EPSON Stylus Color 440 640 740 Revision A
100. es Carriage Unit Print Head Unit Paper Feed Motor Carriage Motor Figure 2 1 Printer Mechanism Block Diagram 44 Revision A EPSON Stylus Color 440 640 740 2 1 1 1 Printing Mechanism Basic principles of the print head which plays major role of printing mechanism is the same as previous models on demand type MACH head method but there is some difference in the resolution Refer to figure1 1 Also unlike Stylus Color Ils 820 200 automatic correction type in order to fix the dispersion of mufti layer piezo electric element which is used for driving each nozzles it is necessary to input the VH value written on the side of print head by using exclusive program when you replace print head control board or the printer mechanism However there are no resistor array to decide the VH voltage on the main control board Following explains print head O PZT PZT is an abbreviation of Piezo Electric Element Print signal from the PSB PSE board is sent through the driver board on the print head unit and to the PZT Then the PZT pushes the top cavity which has ink stored and make the ink discharge from each nozzle located on the nozzle plate O Cavity Set Ink which is absorbed from ink cartridge go through the filter and will be stored temporarily in this tank which is called cavity until PZT is driven O Nozzle Plate The board with nozzle holes on the printer head surface is called Nozzle Plate O Filter
101. es in the EEPROM Stylus Color 740 Confirming all 3 LEDs are blinking release the Cleaning switch The printer automatically starts initialization operation to reset the specified addresses in the EEPROM NOTE 5 Before you press the Load Eject switch be sure to enter the EEPROM reset mode referring to Table 1 20 You can reset the below addresses in a EEPROM by performing the EEPROM Reset operation 1 1 Timer Counter Power Off time IC value 2 I F selection returns to Auto 3 Protection Counter value Even though you repeat the EEPROM reset operation it does not perform initialization but only resets the EEPROM addresses Wheater or not to permorm initialization depends on the power off time monitored by the timer IC 33 EPSON Stylus Color 440 640 740 Revision A 1 4 3 Printer Condition and Panel Status Table 1 22 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 22 Printer Condition and LED Status a Indicators GE Printer Status Priority Power on condition SE ER 9 Ink Sequence mode On 6 I C replacement mode Blink i 5 Data processing Blink m 8 Paper out Blink On 4 Paper jam Off Off Blink 3 No I C Ink out bk On ERE 7 Ink level low bk Blink 7 No I C In
102. et Cable 527 Crescent Ring 559 Detector PE 528 Plain Washer12 2x0 5x15 560 Carriage Assembly 529 Roller Assembly Paper Eject 561 Lever Adjust 530 Bushing 6 562 Grouding Plate Head 531 Retaining Ring Type E 4 563 Oil Pad 532 Spur Gear 36 564 Slider CR 533 Spur Gear 11 565 Timing Belt 534 Plain Washer 4 1x0 5x6 5 566 Shaft CR Guide 535 Paper Guide Front 567 Pulley Assembly Driven 536 Grounding Spring Paper Eject 568 Holder Pulley Driven 538 Frame Paper Eject 569 Compression Spring 19 6 539 Holder Star Wheel Right 570 Lever PG 540 Holder Star Wheel Left 571 Lever PG Sub 541 Holder Star Wheel Front 572 Torsion Spring 63 7 542 Star Wheel Assembly 8 Natural 573 Combination Spring 6 34 4 543 Star Wheel 8 B 574 Combination Spring 8 30 544 Bar Spring Star Wheel 576 Absorber Slider Cap 545 Paper Guide Upper 577 Bushing Fixing Combination Gear 198 EPSON Stylus Color 440 640 740 Revision B Table A 38 Part List for Stylus Color 440 640 3 4 Table A 39 Part List for Stylus Color 440 640 4 4 Part Name 578 Push Nut 2 724 Roller LD Sub 757 Holder Paper Support Sub Upper 579 Harness HP 725 Holder Roller LD Sub Right 758 Torsion Spring 0 29 580 Harness PE 726 Pad Assy Left 759
103. ever Paper Return Right 755 Bushing Fixing Shaft Left 590 Plain Washer 6 1x0 5x9 0 723 Tension Spring 0 294 756 Paper Support Sub Upper 591 6N Class 2 M3 724 Roller LD Sub 757 Holder Paper Support Sub Upper 592 Plain Washer 3x0 3x7 725 Holder Roller LD Sub Right 758 Torsion Spring 0 29 595 Holder Detector UC 726 Pad Assy Left 759 Cover Cartridge Bk 596 Lever Detector I C Bk 727 Lever Pad Release Left 760 Cover Cartridge C B 597 Lever Detector I C CL 728 Holder Edge Guide Left 761 Separator Cartridge Bk 598 Grounding Plate Roller PF 729 Lever Paper Return Left 762 Separator Cartridge C 600 Torsion Spring 1 08 730 Holder Roller LD Sub Left 763 Detector HP 601 Detector I C 731 Roller Assy LD Left 764 Cork B 602 Harness UC 732 Roller Assy LD Right 765 Cleaner Head ASP 700 Printehead 733 Cover Roller LD Left 701 Fastener Head 734 Cover Roller LD Right 702 Torsion Spring 49 735 Compression Spring 1 961 703 CBP Tite Screw 3x6 F Zn 736 Lever Fixing Edge Guide B 704 Cable Head 737 Tension Spring 0 088 705 Holder Cable 738 Shaft Roller LD 706 Spacer Cable Head 739 Lever Hopper Release 707 Frame ASF B 740 Wheel Detection 708 Hopper 741 Lever Brake 709 Edge Guide 742 Pad Brake 710 Cork 743 Torsion Spring 41 2 711 Slider Edge Guide 744 Bushing Fi
104. gular cleaning Therefore note that the points suggested below are only to check for dirt and perform appropriate cleaning if necessary clean the printer These chemicals can damage the components of the printer m Be careful not to damage the components when you attempt to clean the inside the printer m Do not scratch surface of ROLLER ASSEMBLY PF Use soft brush to wipe off any dusts or use a soft cloth moistened with alcohol iia m Never use chemical solvents such as thinner to O Housing Use a clean soft cloth moistened with water and wipe off any dirt If the housing is stained with ink use a cloth moistened with neutral detergent to wipe it off O Inside the printer Use a vacuum cleaner to remove any paper dust Chapter6 Maintenance Revision A 6 1 2 Service Maintenance If print irregularity missing dot white line etc has occurred or the printer indicates MAINTENANCE ERROR take the following actions to clear the error O Head Cleaning The printer has a built in head cleaning function and is activated through the control panel operation 1 Confirm that the printer is in stand by state the POWER indicator is not blinking and hold down the cleaning button on the control panel for more than 3 seconds 2 The printer enters the built in cleaning sequence During the sequence the POWER indicator is blinking O Maintenance Error Clear Ink is used for the operations such as cleaning a
105. gure 4 20 Removing the Paper Guide Assembly Torsion Spring 117 6 125 EPSON Stylus Color 440 640 740 Revision A Front Paper Guide B Align the protrusion in the PF roller assembly with the hole in the frame for holding the shaft Eject Paper Roller Assembly j PFR Figure 4 22 Removing the PF Roller Assembly gt oller Assembly Figure 4 21 Removing the Paper Eject Roller Assembly Chapter 4 Disassembly and Assembly 126 EPSON Stylus Color 440 640 740 4 2 4 9 Removing the PE Paper Detector Assembly 1 Remove the housing Refer to Section 4 2 1 2 Release two fixed hooks securing the PE detector assembly from the back of the frame and remove the PE detector assembly sliding it upward Remove the PE board assembly and PE lever if necessary E During assembly make sure that the tip sensor part of the POINT er SCH detector lever is in the hole of paper guide assembly Chapter 4 Disassembly and Assembly Revision A After releasing two hooks remove the PE paper detector assembly sliding it upward From back side of the frame PE Holder This side should be installed on the frame PE Board Assembly PE Lever Torsion Spring 0 22 Figure 4 23 Removing the PE Detector Assembly 127 EPSON Stylus Color 440 640 740 Revision A 4 2 4 10 Removing the HP Detector 1 Remove the housing Refer to Section 4 2 1 2 Remove the cable from the HP detector and tak
106. h the carriage when you move the carriage about 20 mm right and left Gap will be narrowed 6 From this thickness with which the thickness gauge starts moving with the carriage move the gear of the right parallelism adjustment bushing one notch toward you Gap will be widen 7 With the PG lever set front gap is small and then rear move the carriage right and left and make sure that the thickness gauge does not move for the both settings Left Parallelism Adjustment 8 Perform Steps 2 to 7 for the left parallelism adjustment bushing Checking parallelism 9 Perform steps 1 to 4 again 10 Make sure that the thickness gauge does not move right and left along with the carriage when the carriage is moved about 20 mm 11 Move the right parallelism adjustment bushing one notch to the rear Gap will be narrowed Then check that the thickness gauge moves along with the carriage If the thickness gauge does not move go back to Step 1 and repeat the adjustment 12 If the gap is adjusted correctly move the right parallelism adjustment bushing one notch toward you Gap will be widen 132 EPSON Stylus Color 440 640 740 Revision A Fixing Parallelism Adjustment Bushing Position Mark 13 Fix the right and left parallelism adjustment bushings with screws l No 1 screw for each Forward Backward Gap Wider l Gap Narrower When completing this adjustment check the overlap amount of the printhead and h
107. he cold reset command remote RS command When printer is initialized following action is performed Initializes printer mechanism Clears input data buffer Clears print buffer Sets default values a b c d YS Ye a mH 2 Operator initialization This printer is initialized when turning the printer power on again within 10 seconds from last power off or printer recognize the INIT signal negative pulse of parallel interface When printer is initialized following action is performed a Cap the printer head b Eject a paper c Clears input data buffer d Clears print buffer e Sets default values 3 Software initialization The ESC command also initialize the printer When printer is initialized following action is performed a Clears print buffer b Sets default values Chapter 1 Product Description 1 7 Initialization Settings Stylus Color 440 640 740 initializes following settings when the initialization is performed Also if the user changes the settings in the Panel setting mode Default setting or Remote command setting values or settings which are possible to be stored are initialized as initialization settings m Page position Page heading location for current page Line spacing 1 6 inch Right margin position 80 lines Left margin position First line Character pitch 10CPI Printing mode Text mode Not Raster graphics mode 37 EPSON Stylus
108. hecked ONot necessary Protection conditions during transport Is all the pointed parts firmly fixed DIChecked LINot necessary Others Attached items Are all attached items from users included DIChecked LINot necessary Chapter 4 Disassembly and Assembly 103 EPSON Stylus Color 440 640 740 Revision A 4 2 Disassembly Procedures The flowchart below shows procedures for disassembly Remove the Housing Heler to 3 2 Remove the Board Assembly 3 2 2 Remove the operation panel Remove the Printer Mechanism Remove Remove the Pump Remova nit the Absorber tray Assembly Remove the CR Remove the PF Remove the ASF Remove the CR Remove the PF Paper hdi Remove the HP Assembly A Cap Assembly Motor Assembly Motor Assembly Assembly Assembly Roller Assembly Assembl Detector 3 2 4 1 3 2 4 2 3 2 4 3 3 2 4 4 3 2 4 5 3 2 4 6 3 2 4 7 3 2 4 8 3 2 4 9 3 2 4 10 Hemove the Paper Feed Roller Assembl 3 2 4 6 1 Remove the LD Roller Assembly Right Left 3 2 4 6 2 Figure 4 1 Flowchart of Disassembly Chapter 4 Disassembly and Assembly 104 EPSON Stylus Color 440 640 740 Revision A 4 2 1 Removing the Housing Since the printer mechanism itself structures the bottom part the printer No 2 mechanism appears just by removing the housing I 1 Open the printer cover and turn the PG adjustment lever towards TT side Housing 2 Remov
109. hed Roller has been changed by 5 degrees compared with the previous products Due to this change the bottom margins of these printers are expanded from 14 mm to 3 mm Previous Print Head Support Roller Eject Notched Roller K Paper p Eject Roller PF Roller Bottom Margin 3 mm Touch on the print head surface Stylus Color 440 640 740 Platen Figure 2 9 Paper Feed Mechanism 51 EPSON Stylus Color 440 640 740 Revision A 2 1 1 5 Ink System Ink system mechanism consists of 1 cap mechanism 2 pump mechanism carriage lock mechanism 4 waste ink absorber and 5 ink sequence Out of these mechanism from 1 to 4 are physical Printable Area 2976 dot 360 dpi mechanism and parts which are mounted on the printer mechanism and 5 ink sequence is performed automatically by firmware Also unlike previous models since Stylus Color 440 640 740 has no engage disengage mechanism to change over pump mechanism and paper feed mechanism it is one of the major characteristics that pump and platen are always at work whenever the PF motor is driven The figure E a SH below shows head positions when the ink system and various ink C Flashing Position S D Wiping Complete Rubbing start Position sequence are performed E I C Replacement Position F ASF Pick up Position Figure 2 11 Major Ink Sequence Position on Carriage Working Area PF Roller Drive Gear Eject Roller Drive Gear E Ej
110. her media 19 EPSON Stylus Color 440 640 740 Revision A 1 2 4 Ink Cartridge Specifications Black Ink Cartridge Table 1 8 Black Cartridge Specifications Type Exclusive Cartridge for Stylus Color 440 640 Exclusive Cartridge only for Stylus Color 740 Color Black Print Capacity lt Stylus Color 440 640 gt 540 pages A4 ISO IEC 10561 Letter Pattern at 360 dpi lt Stylus Color 740 gt 900 pages A4 ISO IEC 10561 Letter Pattern at 360 dpi Validity 2 years sealed in package 6 months out of package Environmental e Temperature conditions Storage 20 C 40 C within a month at 40 C 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 e Humidity 5 to 85 without condensation Note Ink freezes below 3 C but it returns to normal after 3 hours at room temperature 25 C e Dimension lt Stylus Color 440 640 gt 19 8 mm W X 52 7 mm D X 38 5 mm H lt Stylus Color 740 gt 27 8 mm W X 52 7 mm D X 38 5 mm H Weight Total Ink Cartridge 30 g Total Ink 16 4 0 5g Consumable Ink weight more than 12 1 g for Stylus Color 740 Figure 1 6 Black Ink Cartridge Appearance Chapter 1 Product Description 20 EPSON Stylus Color 440 640 740 Color Ink Cartridge Table 1 9 Color UC Specifications Items Specifications Type Exclus
111. herwise the printhead angle will no change even if the adjusting lever moves Chapter5 Adjustment 149 EPSON Stylus Color 440 640 740 Revision A 7 After changing the position of the adjust lever select Head angular adjustment pattern again The printer prints out a head angular adjustment pattern and the screen automatically returns to the Current Head Angular Confirmation Menu 1 shown in the figure below MS MS DOS Prompt SC640 LEE Ares oee E ea al Figure 5 31 Current Head Angular Confirmation Menu 1 8 Verify the pattern on the printout again 9 Repeat the procedures from Step 5 to Step9 until the combination pattern of black magenta is correct 10 After completing the adjustment tighten the loosened screw and reinstall the upper case only when you remove it Chapter 5 Adjustment 150 EPSON Stylus Color 440 640 740 Revision A 5 2 2 9 Bi D Adjustment You perform this adjustment to correct differences in printing positions which is caused by slippage of printing timing in right and left directions during the Bi directional printing Therefore you are required to perform this adjustment after performing the following operations m Replacing the Print mechanism Replacing the main board Replacing the CR motor Replacing the Carriage Assembly Replacing g the Printhead 1 Apply the main menu Figure 5 21 See Section 5 2 2 2 2 By using the Up Down arrow key select Adjustment in the main menu
112. ially Available Table 4 1 lists the tools recommended for disassembling assembling or adjusting the printer Use only tools that meet these specifications Code Driver No 2 O K B743800200 Driver No 1 O K B743800400 Tweezers OK B741000100 Hexagon Box Driver OK B741700100 Opposite side 5 5mm 101 EPSON Stylus Color 440 640 740 Revision A 4 1 3 Specification for Screws Table 4 2 shows screw specifications During assembly and disassembly make sure that the specified types of screws are used at proper locations referring to the table below Note that the screw numbers described in the manual correspond to the numbers in the table Table 4 2 Screw Characteristic No Body Name Size 1 Bind S tight M3X6 2 Bind S tight M3X10 3 Bind P tight M3X6 CBP tight 4 Bind P tight M3X10 CBP tight 5 Bind P tight M3X8 CBP tight 6 Pan head M3X4 7 Bind S tight M3X6 Sems R2 CBS Sems Chapter 4 Disassembly and Assembly 102 EPSON Stylus Color 440 640 740 Revision A 4 1 4 Service Checks After Repair Before returning the printer after servicing use the check list below which enables you to keep record of servicing and shipping more efficiently Category Printer units Table 4 3 Inspection Checklist for the Repaired Printer Component Item to check Is Check Required Self test Is the operation norm
113. idge with a new one Is it an ink Connect them cartridge error NO Is the Replace the ink problem Refer to 3 4 Repair of Ge Si i cartridge with a new solved NO the printer mechanism Maintenance Error plac A one and perform board if there is no self test problem v Replace the waste s the ink absorber and reset See the counter YES Solved Refer to 1 4 2 NO Refer to 3 4 2Repair of Replace the Main Check the ink cartridge the printer mechanism board sensor and replace Refer to Section 3 4 the head if it s ubnormal Repair of the printera mechanism s the problem solved p gt y Flowchart 2 Flowchart 3 Chapter 3 Troubleshooting 86 EPSON Stylus Color 440 640 740 Revision A 3 2 4 Printer does not feed paper correctly START Set the paper correctly Remove any obstruction in the paper path if there is any YES Check the PF motor If there is no problem x Clean the roller of paper path Is the problem solved NO p replace the main board Refer to Section 3 4 Repair of the printer mechanism Flowchart 4 Chapter 3 Troubleshooting STAR
114. ied ROLLER PF 1 point Avoid applying grease around the in this manual ROLLER EXIT 2 points perper paih N lt Lubricant Type gt G 26 PAO a syinge io SUN Si A Lubrication A Table 6 1 Specified Lubricants poti sula ll a 10 mm long Type Name EPSON Code Supplier 2 mm long Grease G 26 B702600001 EPSON 3 lt Lubrication Point gt Verify that the carriage moves Oil 0 12 1038991 EPSON Contact points between the carriage Smoothly after lubricating it assembly and FRAME UPPER Use a syringe to apply it lt Lubricant Type gt G 26 lt Lubrication Amount gt Range from the HP sensor installation point to the point where GUIDE PLATE CABLE is attached 4 lt Lubrication Point gt Rotate the gears after applying Chapter6 Maintenance Gears GEAR 67 2 COMBINATION GEAR 8 14 4 GEAR 23 2 lt Lubricant Type gt G 26 lt Lubrication Amount gt 1 4 of gear tooth 1 3 of gear tooth 1 3 of gear tooth 1 3 of gear tooth grease to evenly distribute it Use a syringe to apply it 155 EPSON Stylus Color 440 640 740 Revision A Table 6 2 Lubrication Point Table 6 2 Lubrication Point No Standard Remarks No Standard Remarks lt Lubrication Point gt Use a syringe to apply it 10 lt Lubrication Point gt Completely wipe off any grease The shaft for GEAR 16 40 8 on ASF sticking out to the inner side of ASF FRAME LEFT lt Lubricant T
115. igure 4 14 m Be careful of the direction of the wires from the PF motor assembly mE Do not damage or mar the grooves in the gears during the disassembly and assembly m When disassembling the PF motor assembly pull the POINT Figure 4 14 Removing the PF Motor Assembly Stylus Color 440 640 Chapter 4 Disassembly and Assembly 118 EPSON Stylus Color 440 640 740 4 2 4 6 Removing the ASF Assembly 1 2 Remove the housing Refer to Section 4 2 1 Release the fixed hook from the inside of the printer mechanism and remove the gear 34 from the roller shaft in the ASF assembly Remove the cables from the cable hook on the printer mechanism and the hook on the ASF assembly After removing 2 screws one No 7 screw and one CR shaft installation screw remove the ASF assembly releasing the protrusion on the left side of the ASF assembly from the hole in the frame frame and ASF assembly are attached each other m When installing the ASF assembly make sure that the POINT without any space between them m Screws for ASF assembly should be used at the following positions Looking from the back of printer Right CR shaft installation screw Left Screw No 7 Bind S tight Sems R2 with a plain washer Chapter 4 Disassembly and Assembly Revision A CR Shaft Installation Screw Screw with a Washer No 7 Ng Make sure that the protrusions in the ASF Assembly are in these holes on the frame when
116. igure 5 14 Cleaning Menu 4 Press the Enter key The printer enters the CL2 sequence It takes 60 seconds for the process to complete 141 EPSON Stylus Color 440 640 740 Revision A 5 2 2 5 Protection Counter Indicate Reset 4 Press the Enter key while the reverse cursor is indicating Check the protect counter value The screen below appears The program provided with this manual can let you confirm or clear the current protection counter value Of course you can confirm or clear the current protection value by main unit alone Refer to table 1 21 and 1 22 for details Confirming the current protection counter value 1 Enter the main menu Refer to Section 5 2 2 2 2 Apply the maintenance menu Figure 5 12 3 By using the Up Down arrow key select Indication of the counter value for the waste ink pad The screen below appears Cao d e E es A Figure 5 16 Current Protection Counter Conformation 2 Clear the protect counter value Figure 5 15 Current Protection Counter Conformation 1 Screen Chapter 5 Adjustment 142 EPSON Stylus Color 440 640 740 Revision A Clearing the current protection counter value 5 Press the Enter key while the reverse cursor is indicating Already replaced The screen below appears 1 Enter the main menu Refer to Section 5 2 2 2 2 Apply the maintenance menu E 8 2 Al 3 By using the Up Down arrow key select the item Indication of
117. ink from attaching around the nozzle plate by transferring the head to cap osition IC5 CN4 p CN5 ESS Pen 4M DRAMX2 CN11 Q1 FET IC12 _1C13 PF Drive CN8 IC1 CPU riser Trans 11 Ei IC11 CR IC2 Asic IC7 EEPROM Figure 1 14 C257 Main Board Major Electric Elements Figure 1 15 C206 C257 PSB PSE Board Major Electric Elements Chapter 1 Product Description 40 EPSON Stylus Color 440 640 740 Revision A 1 8 6 C206 PNL Board Stylus Color 440 640 1 8 7 C209 PNL Board Stylus Color 740 Panel board C206 PNL board is located in the panel case where is in Panel board C209 PNL board is located in the panel case where is in the right bottom of the front printer and consists of 3 switches 4 LEDs the right bottom of the front printer and consists of 3 switches 4 LEDs and 1 connector and 1 connector Figure 1 17 C209 PNL Board Figure 1 16 C206 PNL Board Chapter 1 Product Description 41 Download Service Manual and Resetter Printer at http printer1 blogspot com EPSON Stylus Color 440 640 740 Revision A 2 1 Overview This section describes the operating principles of the printer mechanism and the electric circuit board O Electronic Boards for Stylus Color 440 are Main C206 Main B C255 Main Board Power Supply C206 PSB PSE Board Panel C206 PNL Board O Electronic Boards for Stylus Color 640 are Main C256 Main Board Power Supply C206 PSB PSE Board Panel C206 PNL Board O Electr
118. installing the ASF assembly Figure 4 15 Removing the ASF Assembly 119 EPSON Stylus Color 440 640 740 Revision A 4 2 4 6 1 Removing the Paper Feed Roller Assembly 1 Remove the ASF assembly Refer to Section 4 2 4 6 gma m During disassembly and assembly of the hopper assembly do not let the grease on the cam parts 2 Remove the brake lever releasing one leg of the torsion spring 41 2 touch other parts Wipe off any grease smeared on from the hook of the ASF frame other parts m Be careful of the direction of the hopper lever release 3 Remove the fixing shaft bushing from the right side of the LD roller when installing it EE EES m Make sure that the right and left fixing bushings are installed steadily and do not slip off m During assembly attach the cam fixing bushing after installing the LD roller shaft to the ASF frame 4 Move the left paper feed assembly to the center and remove the cam fixing bushing white plastic attached to the left side of LD roller shaft m When installing the right and left paper feed roller 5 Push the LD roller shaft to the left and remove the left shaft fixing assemblies to the LD roller shaft the black paper feed bushing after releasing its hook roller assembly goes on the right side and the one in the standard EPSON color goes on the left of the 6 Remove the right and left sides of the hopper assembly from the shaft protrusions on the ASF frame 7 Lift up the right sid
119. int Verify that the holder slides only with spring force after applying grease Use a syringe to apply it lt Lubrication Point gt Oil pad in the carriage assembly lt Lubricant Type gt O 12 lt Lubrication Amount gt 0 7 cc Note This is the amount to be applid to a new oil pad Lubricate the oil pad only when Replacing the carriage assembly Replacing the oil pad Use a precise syringe to apply it If you accidentally apply too much oil to the oil pad throw the pad away and take a new one again Leave the oil pad for a while to wait until oil is evenly infiltrated then install it on the carriage assembly lt Lubrication Point gt ASF The round hole in the right frame of ASF to hold the roller shaft lt Lubricant Type gt G 26 lt Lubrication Amount gt Evenly apply inside the hole Avoid applying grease to ROLLER ASSEMBLY LD Chapter6 Maintenance 156 EPSON Stylus Color 440 640 740 Revision A may cause fatal damage to the components of the printer m Avoid applying oil excessively to the oil pad This may cause fatal damage to the components of the printer m Never apply oil to the CR guide shaft directly This Never apply the oil exceeding 0 6cc No 12 Oil pad Carriage Assembly bottom view SHAFT CR GUIDE Chapter 6 Maintenance 157 Revision A EPSON Stylus Color 440 640 740 No 4 GEAR
120. int Head Control Circuit In the Dynamic RAM control output and formation of CAS and RAS The print head control circuit of Stylus Color 440 640 740 has following control signals become necessary in addition to the output of CS signal characteristics The CPU not only controls that but also perform the output of CS signal EE E E of P ROM Refresh timing is performed in the CAS Before RAS i m Slight vibration mode is added when the CR motor is accelerating m High speed drive 14 4Khz trapezoidal wave form m Big Nozzle configuration resolution in the vertical direction 90dpi However black nozzle is 2 lines structure Also Stylus Color 440 640 740 does not have Micro dot control as dot shooting control but there are two types Normal dot and Normal dot 2dot Normal dot 2dot was called Dual Firing in the Stylus Color Ils 820 These setting change are controlled automatically by setting of the printer driver that is determined by the user The followings are required conditions to perform the normal dot 2 dot m At the OHP Normal sheet setting 360X360 dpi m At the ordinary paper and resolution 360X360 dpi setting The control circuit is considered as 2 divided parts 1 trapezoidal wave form generation circuit common drive circuit to drive PZT in the head and 2 Nozzle selector drive circuit to determine which nozzle should be used The Nozzle Selector is attached to the head unit just like the previous models The common drive circu
121. inting Device Version 1 0 Handshaking X ON X OFF DTR Protocol Bit Rate 12 M bps Word Format Data Bit 8 bits Data Encoding NRZI Parity Bit None Connector USB Series B Start Bit 1 bit Recommended Cable Length 2 meters Stop Bit 1 bit Connector 8 pin mini circular connector Table 1 18 Pin Assignment Recommended Cable Apple System Peripheral 8 Cable Pin No Signal Name 19 Description 4 Vec _ Cable power Maxi power consumption Table 1 16 Pin Assignment is 100 mA PinNo Signal Name vo Description 2 Data Bi D Data 1 SCLK O Synchronous clock signal 3 Daia Bi D Data pull up to 3 3 V via 1 5 K ohms 2 CTS Clear To Send resistor 3 TXD o Transmit Data 4 Ground Cable Ground 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 Table 1 17 X On X Off and DTR Status State Buffer Space X ON X OFF DTR Busy Less than 3072 bytes Send X OFF code OFF Figure 1 10 USB Pin Assignment Ready More than 5120 bytes Send X ON code ON Chapter 1 Product Description 31 EPSON Stylus Color 440 640 740 Revision A 1 4 Control Panel Since Stylus Color 440 640 740 does not require many buttons since printer driver can start various settings and motions Therefore there are only 2 non lock type push switches 1 lock type push switch
122. ion A 83 EPSON Stylus Color 440 640 740 Revision A Table 3 3 Printer Condition and Panel Status Indicators Error Status Ink out Ink Out Recovery Black Color Paper Out Load paper by pressing the load eject Paper Out Ss ec Ss On butt n Eliminate a paper then press the load eject Paper jam condition Off Off Blink Bunn No Ink cartridge or E Install a new black ink cartridge by pressing Ink end black the load eject button for 3 seconds No Ink cartridge or Install a new color ink cartridge by pressing Ink end color the load eject button for 3 seconds Maintenance d y Change the waste ink drain tank and reset request Blink Blink Blink Blink the EEPROM Turn the printer off and on again If the Fatal error Blink On On Blink printer does not recover repair the appropriate part Chapter 3 Troubleshooting 84 EPSON Stylus Color 440 640 740 Revision A 3 2 1 Printer does not operate at power on 3 2 Unit Level Troubleshooting When a problem occurs you can identify the defective unit according to the symptoms exhibits The table below lists the symptoms of certain problems Once the problem is identified refer to the flowchart that corresponds to the problem Table 3 4 Symptom and Problem Symptom Problem Flowchart No Printer does not LEDs do not light Flowchart 1 Exchange the fuse operate at power on Printer mechanism does not o
123. irection When the energy which is charged in the trans is reaching the saturated state the voltage which makes the Q1 On becomes weak gradually At the point that this voltage drops at the certain voltage C13 absorbs the current in the opposite direction and Q1 is quickly shut off by the resulting sharp drop When the primary side is turned off the energy charged in the T1 is opened according to the diode D51 direction which is installed on the secondary side Basically 42 V DC is output by these circuit operations and the number of T1 spiral coil 5VDC is generated by pressured down this 42VDC as power supply IC51 pressures down the 42VDC and generates precise 5VDC by chopping off the output forming the standard santooth wave form by the outer RC integration circuit Chapter 2 Operating Principles The C206 PSB PSE board has various control circuits to stop output if malfunction on the power supply board on the main board or on the duty of printer mechanism happen Following explains each control and protection circuits O 42V Line Constant Voltage Control Circuit The output level of the 42V line is monitored by a detection circuit consisting of seven Zener diodes This circuit prevents voltage from dropping for constant output voltage 5V Line Over voltage Protection Circuit This protection circuit is in the same line as 42V over voltage protection circuit is located The output voltage level of the 5V line is mon
124. irm its operation Pintch Roller D Cut Roller CAM Hopper Hopper spring Return Lever Standby state Returning state Figure 2 7 ASF Unit Operation Chapter 2 Operating Principles Step 1 When the load Eject switch is pressed or printing order is input from the PC PF motor rotates counterclockwise and makes the CAM rotate towards direction of 1 in the figure above Step 2 When the CAM covers the notch by the return lever that position is considered as home position being monitored by ASF sensor Step 3 When the CAM rotates toward 1 in the figure above the return lever is pushed by the notch of CAM and falls towards 2 At this time the return lever moves to direction 3 by this motion and push down the pad which is waiting in the below part At this time friction of pinch roller and pad will be canceled Step 4 The papers which are out of stand by position by the previous paper feed motion are returned to the paper stand by position by flip over strength of return lever After this PF motor rotates clockwise and the printer goes to pick up sequence In the paper pick up mechanism of Stylus Color 440 640 740 same mechanism as Stylus Color 400 600 Photo Photo EX are applied This mechanism changes adjoined lines of gear by colliding trigger lever with carriage unit and convey the motive power on the platen to the ASF side paper roller The figure below shows mechanism with explanation 50 EP
125. ism PF CR Motor Motor PE Sensor HP Sensor ASF Sensor Print Head Figure A 2 Cable Connection of the Stylus Color 740 166 Revision A EPSON Stylus Color 440 640 740 A 1 2 1 Connector Pin Assignment Stylus Color 740 Tables in this section provide connector pin assignments of the C257MAIN the main board equipped with Stylus Color 740 gt If you need information on Stylus Color 440 and Stylus Color 640 return to Section A 1 1 1 Information contained in this section only applies to Stylus Color 740 Table A 11 Connector Summary of C257MAIN Connector Function Table to refer to CN1 Parallel I F connector Chapter 1 Table 1 10 CN2 Serial I F connector Chapter 1 Table 1 16 CN3 SUB I F connector Chapter 1 Table 1 18 CN4 To HP sensor Table A 12 CN5 To PE sensor Table A 13 CN6 To ASF sensor Table A 14 CN7 To CR motor Table A 15 CN8 To PF motor Table A 16 CN9 To Printhead Table A 17 CN10 To Power supply board Table A 18 CN11 To Control panel Table A 19 Table A 12 Connector CN4 Pin SignalName WO Function 1 HP In Sensor detect signal 2 GND Ground 3 HPV Sensor power supply 5V Chapter 7 Appendix Table A 13 Connector CN5 Pin Signal Name Te Function 1 PE In Sensor detect signal 2 GND Ground 3 PEV Sensor power supply 5V Table e 14 Connector CN6 Saa Name Function Sensor detect
126. it boards schematics Download Service Manual and Resetter Printer at http printer1 blogspot com REVISION STATUS Rev Date Page s Contents A 1998 07 15 All First Release B 1998 09 30 Page 188 The exploded diagrams and part list for the Stylus Color 740 has been added Pages 195 to 212 Download Service Manual and Resetter Printer at http printer1 blogspot com Product Description SE 9 ee lee EE 11 Printing Specification men nea ana ennaa e anaaeea 11 Paper Specification eg setarea ca aaaea a eta a pi 15 Printing Area si ira sland c ae Do a a 0000 tab bee Genie RU ete C oa 17 Ink Cartridge Specifications 20 Environmental Condition mmm neam ana ennaa a naaeee 22 Electric Specifications abc a aaa ba a a ei a a 23 ET 23 Safety APPrOVAlS 4e Daan et a i e a 8 A edit 23 ee 24 El ET le ME 24 Input Data EE 24 Interface ee ae nn Re A T nr 25 Parallel Interface Forward Channel 25 Parallel Interface Reverse Channel mmeee nenea 27 Serial Interface for Stylus Color 640 740 31 Gontro Panek sista tudes er i al li id d 32 indicators LEDS EE 32 Panel Functions mn aaa ot a dl a i aaa a 33 Printer Condition and Panel Status 34 Error Statui Sase fase Mn cig aaa Dn dt Dual ab sa aaa aa ue ada 35 INK Outs Akiva eebe aad ie aint aa Ed tn 35 Paper OUALLA RER a reper eer Set 35 Paper Jam EE 35 No Ink Cartridge us 36 Maintenan
127. it is hybridized as one HIC and mounted on the main control board See the following pages for the head drive circuit block diagrams for each printer Chapter 2 Operating Principles 72 EPSON Stylus Color 440 640 740 Revision A CN8 22 149 VHV O VHV 5 13 VDD LD 14 F1 z GND GND MM 10 GND H8D2813 IC6 8 GND GND GND O COM O COM 21 COM 16 GND2 17 GND2 18 E05B44 IC2 GND2 OBCO OCCO OLAT Osi olajn aa YCMIEN Josie CLK YCMHSO 11 ICLK CLK CLR O VRF BCHCLK vk NCHG 15 NCHG TMP95C061 1C1 20 ANO 35 THM Figure 2 32 Head Drive Circuit for Stylus Color 440 Chapter 2 Operating Principles 73 EPSON Stylus Color 440 640 740 Chapter 2 Operating Principles 22 42 VHV OVHV 2 5 LF 14 GND 12 GND 41 10 GND H8D2813 IC7 8 GND GND GND 25 COM 5 com 21 COM 16 GND2 17 gt GND2 18 GND2 lo BCO 2 CCO Ze LAT HSOIEN 11 HSO1 OSH SI2 70 OSIS LE CLK 15 5 NCHG P84 3 THM Figure 2 33 Head Driver Circuit for Stylus Color 640 CN8 Revision A 74 Revision A EPSON Stylus Color 440 640 740 42 Fi CXA20996 1C14 22 FLOOR VCC5 RST DATA DCLK E VOUTGNDI GND Figure 2 34 Head Drive Circuit for Stylus Color 740 Chapter 2 Operating Principles Common drive circuit The shape of trapezoidal wave form will be different according to the printing operation slight vibratio
128. itored by a Zener diode This circuit shuts down the circuit operation forcefully when the voltage level exceeds 9V 42VDC Line Drop Limitation Circuit This protection circuit is in the same line as 42V over voltage protection circuit is located The output voltage level of the 42V line is monitored by a Zener diode This circuit shuts down the circuit operation forcefully when the voltage level drops 36V 42VDC Line Over voltage Circuit This circuit is in the same line as 5V line over voltage protection circuit is located The output level is monitored by two Zener diodes If the voltage level exceeds 48VDC this circuit stops circuit operation forcefully 5V Line Constant Voltage Constant Current Control Circuit The output current is monitored by a 5VDC generation switching control IC IC51 which also monitors the output voltage This information is input to the internal comparator and stabilizes 5V line Operation of the secondary side switch is explained in the following page 58 EPSON Stylus Color 440 640 740 Revision A m When the power is turned on Q1 repeats ON OFF automatically along with the increase and decrease of energy on the trans coil at the primary side While the power is being on PSC signal is input to the power supply board from the C206 Main B C255 C256 C257 Main board m This signal turns Q84 on and it becomes possible to discharge energy between 8 9 of T1 At this time even if the power is tu
129. ive Cartridge for Stylus Color 440 640 740 Color CMY Print Capacity 300 pages A4 360 dpi 5 duty each colors Validity 2 years sealed in package 6 months out of package Environmental Temperature conditions Storage 20 C 40 C within a month at 40 C 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 e Humidity 5 to 85 without condensation Note Ink freezes below 3 C but it returns to normal after 3 hours at room temperature 25 C Dimension 42 9 mm W X 52 7 mm D X 38 5 mm H Weight Total Ink Cartridge 67 g Total Ink 12 8 0 5 g colors Consumable Ink weight more than 9 6 g colors Chapter 1 Product Description Figure 1 7 Color Ink Cartridge Revision A 21 EPSON Stylus Color 440 640 740 Revision A 1 2 5 Environmental Condition O Resistance to shock O Temperature m Operating 1G within 1 ms X Y Z directions m Operating 10 to 35 C Refer to Figure 1 8 for condition m Non operating 2G within 2 ms m Non operating 20 to 60 C with shipment container X Y Z directions with shipment container NOTE 1 month at 40 C and 120 hours at 60 C O Humidity m Operating 20 80 RH without condensation Refer to Figure 1 8 for condition O Resistance to vibration m Operating 0 15G Operating m Non operating 0 50G Non Operating H Non operating 5 85 RH NOTE 1 During non o
130. ix 195 Revision B EPSON Stylus Color 440 640 740 273 EXPLODED DIAGRAM FOR EPSON STYLUS COLOR 740 196 Chapter 7 Appendix EPSON Stylus Color 440 640 740 Revision B 519 527 e 48 506 546 553 552 523 20 Si S i e e i Se 1 GE 51 La pi 549 550 eg SE all bo be AG 518 VG vo 528 tio fa a p GE gt See 587 EXPLODED DIAGRAM FOR EPSON STYLUS COLOR 740 3 3 Rev 01 10004 Chapter 7 Appendix 197 EPSON Stylus Color 440 640 740 Revision B A 5 Part List A 5 1 Part List for Stylus Color 440 640 Part Name Part Name Table A 36 Part List for Stylus Color 440 640 1 4 Table A 37 Part List for Stylus Color 440 640 2 4 100 Housing B 128 Mini Clamp 101 Cover Printer B 180 Label Caution 1 B 102 Paper Support B 181 Label Accessory B 103 Stacker Assembly B 182 Label Accessry C 104 Panel Assembly Right B 183 Label Lever Cartridge Black 105 Shield Plate Panel 184 Label Lever Cartridge Color 106 Housing Panel Left B 200 Board Assembly Main 107 Button P S B 300 Board Assembly Power Supply 108 Groundign Plate 330 Harness 109 Cover Shield Plate M B Right 400 Power Cable Assembly 110 Cover Shield Plate M B Left 450 Boar
131. k out CMY On Le 7 Ink level low CMY Blink SC 7 Enters the EEPROM Reset ON for 3 seconds 8 Maintenance Request Blink Blink Blink Blink 2 Fatal Error Blink On On Blink 1 Chapter 1 Product Description 34 EPSON Stylus Color 440 640 740 Revision A 1 5 Error Status When following status occur the printer goes to the error status and stops taking data setting the ERROR signal in the interface as Low and Busy signal as High At this time the printer goes to non printable status Refer to Section 1 4 3 for more details of LED Panel indicators during the various error status 1 5 1 Ink Out When the printer runs out the most part of the ink of any one color it warns ink low and keeps printing When the printer runs out the whole ink of any one color it stops printing and indicates ink out error User is requested to install a new ink cartridge in this state A ink cartridge once taken out should never be used again Re installation of the cartridge not filled fully upsets the ink level detection and may cause a serious problem in the print head as a result a Never use the ink cartridge that has been removed The following explains the warning sign above Step 1 After the cartridge is once taken out bubbles come in from the ink supply hole located at the top of cartridge and are absorbed into the head during printing AS a result the head is unable to discharge ink properly Also ine
132. l Interface Forward Channel Transmission mode 8 bit parallel IEEE 1284 compatibility mode Synchronization By STOPBE pulse Handshaking BY BUSY and ACKLG signal Signal level TTL compatible level Adaptable connector 57 30360 amphenol or equivalent BUSY signal is set high before setting either ERROR low or PE high and held high until all these signals return to their inactive state BUSY signal is at high level in the following cases m During data entry see Data transmission timing m When input data buffer is full m During INIT signal is at low level or during hardware initialization m During printer error See ERROR signal ERROR signal is at low level when the printer is in one of the following states m Printer hardware error fatal error m Paper out error m Paper jam error Ink out error PE signal is at high level during paper out error Chapter 1 Product Description See Table 1 10 in the following page which shows the signal and connector pin assignments for parallel interface forward channel 1 In case of these signals twist pair line is used and returning side is connected to signal GND 1 Forward channel is the mode when the ordinary data such as an order to print is sent from the PC to the printer 25 EPSON Stylus Color 440 640 740 Revision A Table 1 10 Parallel I F Forward Channel Signal Return Name GND Pin Pin No In Out Functional Description
133. lack square of the cap installed in the cap assembly If it gets damaged it will not be able to adhere closely to the surface of the print head and may cause a malfunction in operation When you replacing the cleaner head built in the pump assembly be careful of the following points m Do not touch the cleaner head with your bare hands Use gloves or tweezers E Do not let oil or grease touch the head cleaner m When installing the cleaner head set the rubber side black side toward the right side of the frame When installing the pump assembly do not tighten the screw more than necessary torque Since the spring is included among the gears in the pump assembly be careful that the parts do not pop out during disassembly and assembly When assembling the printer be careful not to crush nor leave any stress on the ink tube connecting the pump assembly and the cap assembly After installing the pump assembly make sure that the cleaner parts move back and forth by rotating the gear 67 2 113 Revision A EPSON Stylus Color 440 640 740 Loosen screws on the right and left sides and float the Paper eject frame assembly Release three hooks from the interior of the right frame assembly Pump Assembly Cap Assembly No 5 Release a hook from the back of the printer mechanism and remove two protrusions from the subframe Figure 4 9 Removing the Cap and Pump Assemblies Chapter
134. le A 32 Stylus Color 740 EEPROM Address Map Coutinued Table A 33 Stylus Color 740 EEPROM Address Map Coutinued QPIT Factory QPIT Factory Address Explanation Setting Settings Settings Address Explanation Setting Settings Settings 33H CG table 0 Italic U S A 1 Italic France 08H 08H 38H Bottom margin 1244 to 44x360 IEH IEH 2 Italic Germany 3 Italic U K 39H by 1 360 inch FOH FOH 4 Italic Denmark 5 Italic Sweden 6 Italic Italy 7 Italic 3AH Page length 1244 to 44x360 IEH IEH Spain 8 PC437 9 PC437 3BH by 1 360 inch FOH FOH Greek 10 PC850 11 PC860 3CH Reserved for main 00H 12 PC863 13 PC865 3DH Reserved for main 00H 14 PC861 15 BRASCIl 16 Abicomp 17 Roman 8 3EH Reserved for main 00H 18 ISO Latin1 19 PC853 3FH Reserved for main 00H 2 20 PC855 21 PC852 40H Password 1 OFH 22 PC857 23 PC866 24 PC869 25 MAZOWIA sale SAN 26 Code MJK 42H Ink flag 1 bit 7 Reserved 00H 00H 27 ISO8859 7 bit 6 black one time 28 ISO Latin 1T bit 5 color one time 29 Bulgaria 30 PC774 bit 4 Initial fill required 31 Estonia 32 ISO 8859 2 bit 3 Reserved 33 PC 866 LAT bit 2 ink cleaning seq 34 PC 866 UKR Bit 1 black CL required 35 PC AR864 bit 0 color CL required 36 PC APTEC 37 PC 708 43H Ink flag 2 bit 2 YMC cartridge 00H 00H 38 PC720 39 Hebrew7 changed and cleaned 40 Hebrew8 41 PC862 bit 1 Black cartridge 34H Auto LF Network bitt Network I F mode 00H 00H
135. logic line during the power ON OFF a operation And reset IC IC9 monitors level of power voltage at the over loading or malfunction on the circuit and manages the printer to operate normally keeping the damage to the printer minimum during the abnormal situations On the C206 main B and C255 main board TMP95C061 E05B44 IC2 RESET Figure 2 20 Reset Circuit for Stylus Color 440 Chapter 2 Operating Principles 66 EPSON Stylus Color 440 640 740 Revision A C256 Main for Stylus Color 640 The reset circuit prevents the CPU from running away which is caused by the unstable voltage in the logic line during the power ON OFF operation And reset IC IC9 monitors level of power voltage at the over loading or malfunction on the circuit and manages the printer to operate normally keeping the damage to the printer minimum during the We i PST592D abnormal situations On the C256 main board e TMP95C061 E05B43 IC2 RESET Figure 2 21 Reset Circuit for Stylus Color 640 Chapter 2 Operating Principles 67 EPSON Stylus Color 440 640 740 C257 Main for Stylus Color 640 The reset circuit prevents the CPU from running away which is caused by the unstable voltage in the logic line during the power ON OFF operation And reset IC IC8 monitors level of power voltage at the over loading or malfunction on the circuit and manages the printer to operate normally keeping the damage to the printer minimum during the abn
136. lor 740 A In case of FD SC440 EXE for Stylus Color 440 If your printer is Stylus Color 740 you must set the A In case of FD SC640 EXE for Stylus Color 640 Alin case of FD SC740 EXE for Stylus Color 740 correct CG NLSP or Standard Therefore be sure to read the instructions in the following step carefully to take the proper steps mm If no model name is registered go to Section 5 2 2 2 1 Step 1 Chapter 5 Adjustment 136 EPSON Stylus Color 440 640 740 Revision A 5 After a few seconds the model name appears on the screen shown 6 The main menu shown below appears below Proceed to one of the following steps MS DOS Prompt SC640 Avo d ulie Ea sf A mm If the printer is Stylus Color 440 or 640 go to Step 6 mm If the printer is Stylus Color 740 go to Section 5 2 2 2 2 NES lt lt Maintenance gt gt Step 1 lt lt Print A4 Pattern gt gt MS MS DOS Prompt SC640 aw Je sf al Esc Quit Up Down arrows Select Enter OK Note This screen is common for Stylus Color 440 640 and 740 except for the program name Is the model name correct Figure 5 8 Main Menu of the Program ESC Previous Up Down arrows Select ENTER OK Note This screen is common for Stylus Color 440 640 and 740 except for the program name Figure 5 7 Initial Screen 2 CAUTION If the screen above does not appear it means no model name is registered and you must proceed to
137. m When the printer fails to eject a sheet even after feeding motion is completed or Load Eject button on the FF command or operation panel is pressed it goes into a paper jam error 35 EPSON Stylus Color 440 640 740 Revision A 1 5 4 No Ink Cartridge Following reasons can be the causes when printer goes this error mode 1 When the printer is turned on for the first time This is a normal error state and it returns to the normal state after installing an ink cartridge according to the ink cartridge exchange operation Ink cartridge exchange operation is done correctly After the position of carriage is moved by exchange operation if the cleaning switch is pushed without installing ink cartridge or if the carriage returns to the home position automatically without doing any operation it is considered as handling mistake However it returns to normal state by performing ink exchange operation again and installing cartridge correctly If No ink cartridge error appears even after the ink cartridge is installed the printer must be something wrong and around the sensor area in the carriage need to be repaired 4 If sometimes printer can print normally but also sometimes No ink cartridge error appears the printer must be something wrong Same reason as above Chapter 1 Product Description 1 5 5 Maintenance Request When the total quantity of ink wasted through the cleanings and flushing reaches to the limi
138. ment program 5 2 2 1 About Adjustment Program The adjustment program Program name SC440 EXE SC640 EXE SC740 EXE enables you to set various values correctly to prevent malfunction and fluctuation of printing quality and printing function caused by difference in components and assembly when the printer components are replaced during repair Basic adjustment procedure by using this program are shown in the right column Chapter5 Adjustment The flowchart below shows the steps to follow before entering the main menu Model Name confirmation by using Nibble mode hich is the essage on the screen Model name is not registored or Is the model name correct Is the model Message Not registered Not Type E while pressing the Alt key registored name correct You must type the model name correctly Message Is the model name correct he mode name has been typed correctly Destination and CG table change mode No NLSP Setting the Destination to World and CG table to the NLSP ver Yes to Retype mode NLSP or Standard Standard A This prompt is only available for Stylus Color 640 and 740 However Stylus Color 640 has no CG on the C256 Main board so that you can not print out the NLSP characters Setting the Destination to World and CG table to the Standard ver To the Main menu Figure 5 4 Interface Flow of Adjustment Program 13
139. nce taken out can not be used again be sure to install a new ink cartridge when you return the printer to the user m When you return the printer to the user be sure to 2 Rotate the flat gear 67 2 towards yourself front and release the carriage lock mechanism Then move the carriage to the left edge 3 Take both black and color ink cartridges out of the printhead unit pack the printer for transportation with a new ink cartridge installed and the carriage in the home 4 Remove the blue covers for black and color ink cartridges from the position when the printer is turned on carriage assembly 5 Remove the torsion spring 49 and one screw No 3 and take the HD When you replace the printhead unit perform the fastener head out following adjustment Refer to Chapter 5 for more 6 Remove the FFC being placed on the carriage assembly and details 2 Head Voltage ID Input Refer to Chapter 5 Section 7 Disconnect the FFC from the connector on the drive board built in 5 2 2 7 the printhead unit 3 Head Angular Adjustment Refer to Chapter 5 Section 5 2 2 8 he followi for the fi low See Ihe 0 lowing pages for the figuras EES 4 Bi D Adjustment Chapter 5 Section 5 2 2 9 Figure 4 6 Removing the Print Head Figure 4 7 Installing the Printhead Chapter4 Disassembly and Assembly 109 Revision A EPSON Stylus Color 440 640 740 Fastener Head Only for 740 There is no actuators on the Note prin
140. ng page O After Power OFF operation If the power is turned off on the way of printing or any other performance carriage lock will be performed in the end after completing initialize operation O After power ON operation After power is turned on and automatic P On Cleaning is performed then carriage lock will be performed P On Cleaning is an automatic head cleaning that is performed when the power is turned on The timer IC always calculates printer s power OFF time by the power of lithium battery mounted on the C206 Main B C255 C256 C257 Main board P on cleaning function automatically selects the cleaning level according to the time which the printer is not in used O After Eject the paper After Load Eject button is pressed and the paper is ejected if the data is not input the printer performs carriage lock and goes to standby state However if the paper is loaded to the printer inside by Load Eject button the printer does not perform carriage lock operation 48 EPSON Stylus Color 440 640 740 Revision A 2 1 1 3 1 Platen Gap Adjust Mechanism and Parallel adjustment Mechanism This mechanism can be set by the users and can prevent various problems related to low image density or print with any dirt by changing the positions of PG lever according to the paper types Table 2 4 Platen Gap Adjust Lever Setting Paper Lever Position PG adjustment value All Media Front 0 mm 1 04mm between head and platen If you find a
141. ngle adjustment 2 Initial Ink Charge When you replace or remove the printhead 3 Perform Bi d adjustment 3 Head Voltage ID Input When you replace the printhead 5 Replace of the CR Motor 1 Perform Bi d adjustment When you replace the main board Replacement of the Printer 1 Perform Head Voltage ID Input Note The values stored in this address are not Mechanism 2 Perform initial ink charge erased by EEPROM reset operation A 3 Perform Bi d adjustment 4 Printing Head Angle When you replace or remove the printhead Adjustment e When you move the printhead angle adjusting lever 5 Bi D Adjustment e When you replace or remove the printhead When you replace the main board e When you replace the CR Motor Chapter 5 Adjustment 130 EPSON Stylus Color 440 640 740 Revision A 5 1 2 Adjustment Tools Required Table 5 3 below shows adjustment tools for Stylus Color 440 640 740 Table 5 3 Adjustment Tools Required Adjustment Item Contents Spec 1 Thickness Gauge Parallelism Adjustment 1 04 mm 2 Adjustment Program Each Mechanism Settings Exclusive Program SC440 EXE SC640 EXE SC740 EXE m Never use the bent curved or tilted or rusty thickness m Erase any dirt grease or obstacles on the thickness gauge before you use it Chapter5 Adjustment 131 Revision A EPSON Stylus Color 440 640 740 5 2 Adjustment This section explains specifi
142. normal temperature B5 Width 182mm 7 2 x Length 257mm 10 1 Legal Width 216mm 8 5 x Length 356mm 14 0 1 2 2 3 Envelope Statement Width 139 7mm 5 5 x Length 215 9mm 8 5 Exclusive Width 190 5mm 7 5 x Length 254mm 10 Size No 10 Width 241mm 9 1 2 x Length 104 8mm 4 1 8 Thickness DL Width 220mm 8 7 x Length 110mm 4 3 0 08mm 0 003 0 11mm 0 004 C6 Width 162mm 6 4 x Length 114mm 4 5 Weight Thickness 64g m2 171b 90g m 241b 0 16mm 0 006 0 52mm 0 02 Quality Weight Exclusive paper Bond paper PPC 45g m 121b 75g m 20Ib Quality Bond paper Plain paper Air mail NOTE 1 Envelope printing is only available at normal temperature NOTE 2 Keep the longer side of the envelope horizontally at setting Chapter 1 Product Description 15 EPSON Stylus Color 440 640 740 Revision A 1 2 2 4 Index Card Size A6 Index card Width 105mm 4 1 x Length 148mm 5 8 A5 Index card Width 148mm 5 8 x Length 210mm 8 3 5x8 Index card Width 127mm 5 0 x Length 203mm 8 0 10x8 Index card Width 127mm 5 0 x Length 203mm 8 0 Thickness Less than 0 23mm 0 0091 Chapter 1 Product Description 16 EPSON Stylus Color 440 640 740 Revision A 1 2 3 Printing Area Cut Sheet See Figure 1 4 in the right column and the tables in the following page for the printable areas for Ras
143. ns at the non printing nozzle and waiting condition However the IC6 for Stylus Color 440 IC7 for Stylus Color 640 IC14 for Stylus Color 740 generates all wave forms as drive wave forms by resistance electric welding control of common voltage drive control signal that is output from the IC2 gate array in the figure above Table 2 9 Specifications of H8D2813 CXA20995 for Stylus Color 440 640 740 Items COntents Drive Power Voltage 42 t 5 Starts supplying after 5V rises and be stabilized Stops supplying before 5V drops Final Drive Element 2SC3746 for charging 2SA1469 for discharging Operation at the Reset Off on the both charging and discharging sides Supplies drive power source This common voltage trapezoidal wave form can be observed anytime after the 5V rises even if there is printing data or not Q7 3 pin Q9 3 pin for Stylus Color 440 and Q2 3 pin Q3 3 pin for Stylus Color 640 740 Nozzle Selector Drive Circuit In order to motivate the print head to carry out printing it is necessary to transmit the printing data to the appropriate nozzles which becomes direct signals to drive PZT This data transmission is performed by the serial method however the data output for each black and CMY head is transmitted by the parallel method 75 EPSON Stylus Color 440 640 740 2 2 4 7 PF Pump Motor Drive Circuit IC15 LB1845 on C206 Main B C255 Main board IC15 UDN2917 on C256 Main
144. ntained in this section only applies to Board Supply C256MAIN Stylus Color 440 and Stylus Color 640 o Main Board CN2 CN10 E If you need information on Stylus Color 740 go to Section A 1 2 Parallel I F CN1 Serial I F CN2 Not mounted CN11 CN5 PF CR Motor Motor PE Sensor HP Sensor ASF Sensor Printer Mechanism Print Head Figure A 1 Cable Connection of Stylus Color 440 640 Chapter 7 Appendix 162 EPSON Stylus Color 440 640 740 Revision A A 1 1 1 Connector Pin Assignment Stylus Color 440 and Stylus Color 640 Table A 2 Connector CN3 Tables in this section provide connector pin assignments of the Pin Signal Name I O Function C206MAIN B C255MAIN and C256MAIN the main boards equipped 1 LEDO Out LED drive signal 0 with Stylus Color 440 and Stylus Color 640 2 GND Ground 3 LED1 Out LED drive signal 1 Information contained in this section only applies to 4 GND laoi Sg Stylus Color 440 and Stylus Color 640 5 LED2 Out LED drive signal 2 6 5V Logic power supply Pin assignments for all connectors but CN8 Printhead 7 5V Logic power supply are common Therefore they are combined in the same 8 LED4 Out LED drive signal 4 tables As for CN8 printhead separate tables a
145. nts the head angular adjustment pattern Figure 5 28 Before or after performing this operation refer to Table 5 2 and perform appropriate adjustments or operations 1 Remove the upper case from the main unit Refer to Chapter 4 NOTE If you perform this adjustment with the upper case installed select Move the carriage to the head angular adjustment position on Current Head Angular Confirmation Menu 1 screen Figure 5 26 before loosening the screw The Head Angular Adjustment pattern is now printing Figure 5 27 Current Head Angular Confirmation Menu 2 Chapter5 Adjustment 148 Revision A EPSON Stylus Color 440 640 740 6 Lookatthe black magenta combination in the pattern and move the ee adjusting lever to make the magenta lines stay between the black lines with even space The figure below shows how the pattern changes as the adjusting lever moves right rear or left front Figure 5 28 Sample of Head Angular Adjustment Pattern 5 Loosen the printhead securing screw securing the printhead on the To move this down carriage You don t need to remove it completely move the lever to the Correct condition evenly spaced right rear 2 000 SSS ATo move this up move the lever to the left front Adjusting Lever Figure 5 30 Lever Operation and Corresponding Change in Pattern Figure 5 29 Screw Position NOTE Make sure to loosen this screw Ot
146. ny print Rear 0 7mm problems 1 07mm between head and platen It is a major premise that parallel adjustment is done correctly for the space between head and platen PG adjustment value above which can be changed by platen gap adjustment Parallel adjustment should be done when the serviceman mounts the carriage guide shaft on the printer mechanism during the production process or repair service In the adjustment the space between parallel adjustment lever and gage should be 1 04 mm Chapter 2 Operating Principles 2 1 1 4 Paper Feed Mechanism and Pump Mechanism Mechanisms that send the paper in the hopper to inside the printer and perform constant paper feed in order to perform printing on the sent paper are called paper feed mechanism as generic name In the Stylus Color 440 640 740 4 phase hybrid type pulse motor is used in the PF motor as a motive power motor as a motive power of the paper mechanism and driving is done at 2 2 1 2 phase drive method for Stylus Color 440 640 and at 2W1 2 W1 2 1 2 and 2 2 phase drive method for Stylus Color 740 This motor is not only used as a power source for paper feed mechanism but also used as power source of pump mechanism which is necessary for print head cleaning By using this pulse motor it becomes possible to use high speed driver or intermittent drive for the various paper feeds and pump operations such as paper feed slight paper feed high and low speed absorption of pump
147. o Section 4 2 4 2 Remove the following gears located on the left side of the printer mechanism m Gear 67 2 Remove the ring with tweezers or a driver After the ring is removed if you try to remove the gear 67 2 by holding its edge the gear may break So try to remove it while holding the whole gear slightly pulling it toward you m Combination gear 8 8 21 6 Combination gear 8 14 4 m Gear 36 Remove 2 hexagon nuts and remove the PF motor assembly motor assembly out of the frame a little bit and remove m When disassembling the PF motor assembly pull the POINT it sliding it into a larger hole in the frame See Figure 4 13 m Be careful of the direction of the wires from the PF motor assembly m Do not damage or mar the grooves in the gears during the disassembly and assembly Chapter 4 Disassembly and Assembly Revision A Gear 34 3 gas Compression Spring 0 9 Gear 67 2 Hexagon Nut Gear 36 Combination Spring 8 8 21 6 Figure 4 13 Removing the PF Motor Assembly for Stylus Color 740 117 EPSON Stylus Color 440 640 740 Revision A For Stylus Color 440 640 1 Remove the housing Refer to Section 4 2 1 2 Remove the absorber tray assembly A Refer to Section 4 2 4 2 3 Remove the 2 screws securing the PF motor assembly to the frame motor assembly out of the frame a little bit and remove it sliding it into a larger hole in the frame Refer to F
148. oard Block for Stylus Color 740 Chapter 2 Operating Principles Revision A 64 EPSON Stylus Color 440 640 740 Revision A CPU The 16 bit CPU which is mounted on Stylus Color 740 is running at 24Mhz Gate array manages most of controls and monitors Likewise the Stylus Color the D RAM is applied for RAM which is used as work area for receiving data and developing the data and CPU manages its control such as CE RAS CAS controls Gate Array E05B588 controls following functions O Motor control Each motor performs data transmission that motives Micro Step Dl Head voltage control In the ink jet printers drive voltage wave form trapezoidal wave form in order to drive PZT is formed in the various shapes according to the types of the printers Therefore it is necessary to form appropriate drive form for each head Head voltage control forms necessary wave form for each control signals and outputs them O EEPROM control The correction value to eliminate the error of each printers at production process is installed in the fixed address of IC When the power is turned off the contents set by users is written instantly and is red to the RAM when the power is turned on O Sensor Data The sensor detects information at the various conditions which is necessary for the printer operation The gate array recognizes signals and changes over to the next control Chapter 2 Operating Principles O Timer Data The timer IC that u
149. onic Boards for Stylus Color 740 are Main C257 Main Board Power Supply C257 PSB PSE Board Panel C209 PNL Board Chapter 2 Operating Principles 43 Revision A EPSON Stylus Color 440 640 740 2 1 1 Printer Mechanism Like previous EPSON Ink Jet printers such as Stylus Color 400 600 Photo Photo 700 Photo EX the printer mechanism of Stylus Color 440 640 740 does not have an exclusive mechanism to change over paper feeding and pumping operation In stead this control is done by the turning direction of paper feed pump motor and position of the carriage at that time Also the print heads of these printers combine the black and CMY heads in one unit The followings indicate the nozzle configurations of these 3 models O Stylus Color 440 Black Nozzle 64 nozzles 90 dpi x 2 rows in staggered CMY Nozzle 21 nozzles colors 90 dpi x 1 row O Stylus Color 640 Black Nozzle 64 nozzles 90 dpi x 2 rows in staggered CMY Nozzle 32 nozzles colors 90 dpi x 1 row O Stylus Color 740 Black Nozzle 144 nozzles 120 dpi x 3 rows in staggered CMY Nozzle 48 nozzles colors 120 dpi x 1 row Among these printers the Stylus Color 640 and 740 can print 1440 H x 720 V resolution like Stylus Color 800 and Pro5000 On the other hand the Stylus Color 440 can print real 720 dpi 720 H x 720 V resolution like Stylus Pro XL Figure 2 1 in the in the right column shows the outline of the printer mechanism Chapter 2 Operating Principl
150. or logic part to drive the printer One of the major characteristic of this board is that the same secondary switch is used as Stylus Color series printer By using this switch the following difference can be seen as superficial phenomena compared with products applied with primary switch method such as Stylus Color Ils Il and Stylus 800 1000 series printer The table below shows application of voltages generated by C206 PSB PSE board 1 Even if the switch is turned off during the middle of printer operation since the driving power is turned off after the carriage goes back to the carriage lock position the possibility of clogging ink nozzle will be decreased 2 If the switch is turned off when the papers in the printer are still being carried except for the papers in the hopper the same operation mentioned above is performed and the driving power is turned off after the paper is completely ejected Table 2 8 Application of DC Voltage Voltage Application 42VDC CR Motor PF Pump Motor Head driving power supply 5VDC Power supply for logic control System control signal Sensor circuit power supply voltage LED panel drive power supply Nozzle selector control signal power supply voltage Chapter 2 Operating Principles Figure 2 16 shows block diagram of C206 PSB PSE board The process from the input of AC voltage to the output of 42 V DC and5 Vis explained in the following pages PSC Signal from Main board
151. ormal situations On the C257 main board The IC 8 has 2 functions both the timer counter and creating a reset signal E05B588 Figure 2 22 Reset Circuit for Stylus Color 740 Chapter 2 Operating Principles Revision A 2 2 4 2 Sensor Circuits The following sensor circuits are mounted in the Stylus Color 440 640 740 and selects appropriate operations based on the returned status m ASF Sensor Photo An ASF sensor detects the position of return lever when the power is turned on and causes the paper to be picked up by the pick up roller from the normal initial condition Refer to section 2 1 1 3 for detail PE Sensor Photo A PE sensor determines if there is paper in the printer Based on the signal form this sensor a particular paper edge treatment such as Micro weave printing is performed HP Sensor Photo A HP sensor detects the carriage home position It is used for managing printing position and cleaning etc Thermistor Sensor A thermistor sensor keeps stable printing quality changing PZT drive voltage VH slightly according to changes of environmental temperature Cartridge Sensors Cartridge sensors are built into the Bk CMY cartridge on the carriage unit respectively to determine if the cartridge is installed or not when it is exchanged or the power is turned on In case of Stylus Color 440 640 740 the counter is reset at every time the cartridge is removed 68 EPSON Stylus Color 440 640 74
152. perate Disconnect CN10 in z SC SE the main board and Error is detected Error is indicated by LED indication Flowchart 2 turn the power on Failure occurs Printing is not performed Flowchart 3 en during printing Abnormal printing missing dot etc i ity i Check output voltag NO Is the Print quality is poor of CN2 in the power fuse opend Printer does not No paper is fed Flowchart 4 supply board again feed paper correctly Paper feed is irregular YES Paper jam occurs Control panel No response to button access Flowchart 5 NO operation is abnormal Chapter 3 Troubleshooting START Input normal power supply Exchange the mai board Exchange the powe supply board Check the motor an head Refer to the repair item of the printer mechanism Flowchart 1 85 EPSON Stylus Color 440 640 740 Revision A 3 2 2 Error is detected 3 2 3 Failure occurs during printing Check the error Un message Refer to printing Table 3 3 S printing carried out Turn off the printer and move the carriage Yes by hand Is it a carriage error Are all cables connected to the main board Perform printing YES adjustment NO Refer to Chapter5 Does the carriage move smoothly Replace the ink gt cartr
153. perating make sure that the head is capped without condensation and with shipment container NOTE 2 During the transport make sure that the head is capped and ink cartridge is installed to the printer Humidity NOTE 3 If the head is not capped at the power off state turn the power RH on with installed ink cartridge and turn off the power after 80 confirming that Power on operation is completed and the head is capped 55 Ge AR ad NOTE 4 Ink will be frozen less than 3 C environment however it Area will be usable after placing it more than 3 hours at 25 C 20 10 27 35 CG 50 80 95 F Figure 1 8 Temperature Humidity of Range Chapter 1 Product Description 22 EPSON Stylus Color 440 640 740 Revision A 1 2 6 Electric Specification 1 2 7 Reliability 120V version Total print volume Rated voltage AC120V Input voltage range AC99 132V Rated frequency range 50 60Hz Input frequency range 49 5 60 5Hz Rated current 0 4A Max 0 5A Power consumption Approx 15W ISO IEC 10561 Letter pattern Energy Star compliant Insulation Resistance 10M ohms min Stylus Color 440 Stylus Color 640 Stylus Color 740 Print head life Stylus Color 440 Stylus Color 640 Stylus Color 740 10 000 pages A4 Letter 25 000 pages A4 Letter 75 000 pages A4 Letter 2000 million dots nozzle 2000 million dots nozzle 4000 million dots nozzle between AC line and chassis DC 500 V Diel
154. put 5 PSC Out Power supply switch output signal 6 GND gt Ground 6 GND Ground 7 SI3 Out Head data output 3 7 GND Ground 8 GND Ground 8 5V Logic power supply 9 SI2 Out Head data output 2 10 GND Ground 11 sh Out Head data output 1 Table a ne CN11 12 GND Ground 13 CLK Out Clock pulse for head data transfer A GND Gruss Sensor detect signal 15 NCHG Out Head all on pulse output S Shp ae Seine 16 GND za a 3 ASFV Sensor power supply 5V 17 VDD Logic power supply 5V 18 GND2 Ground 19 GND2 Ground 20 GND2 Ground 21 COM Head drive power supply 22 COM Head drive power supply 23 COM Head drive power supply 24 VHV Head drive voltage control signal 25 VHV Head drive voltage control signal 165 EPSON Stylus Color 440 640 740 A 1 2 Connector Summary for Stylus Color 740 This section contains information on connectors in the main units of Stylus Color 740 Figure 2 shows how the main component units of the Stylus Color 740 are connected Information contained in this section only applies to Stylus Color 740 gt If you need information on Stylus Color 440 and Stylus Color 640 return to Section A 1 1 Chapter 7 Appendix AC Revision A C257MAIN Control Panel Main Board CN10 CN1 CN2 CN3 Printer Mechan
155. r 440 and consists of following C256 Main board controls Stylus Color 640 and consists of following major electric elements This board will be changed to new board called major electric elements C255 Main board IC16 P ROM IC15 CR IC14 PF IC15 CR IC14 PF IC3 P ROM O Ict CPU aig Batt 1 CN7 CN6 CNS CN10 CN8 CN4 CN11 IC7 Head EEPROM lo7 Head 7 oo sad IC2 Asic IC5 4M D RAM IC11 IC2 Asic 1C4 4M D RAM Q7 Q9 Head Figure 1 13 C256 Main Board Major Electric Elements Figure 1 12 C206 Main B Major Electric Elements Chapter 1 Product Description 39 EPSON Stylus Color 440 640 740 Revision A 1 8 4 C257 Main Board Stylus Color 740 1 8 5 Power Supply Board C206 PSB PSE Stylus Color 440 640 C257 Main board controls Stylus Color 640 and consists of following C257 PSB PSE Stylus Color 740 major electric elements In the electric boards for Stylus Color 440 640 740 a switching regulator method is used and supplies stable logic and power voltages IC14 Head C6 CG only for NLSP constantly Also since this C206 C257 PSB board ha secondly type CN9 IC3 P ROM switch for its circuit system it is possible to keep supplying electricity to the C206main B C255 C256 C257 main control board for 30 seconds even after the power switch is turned off Using this time difference CN3 even when mis operation is done by the user such as turning off the power during the middle of printing work it prevents thickened
156. re 9 DW In Panel switch input 1 provided as shown below 10 PSC In Power on off switch m Table A 7 CNS for C206MAIN B C255MAIN 11 SW In Panel switch on off 0 m Table A 8 CNS for C256MAIN 12 SW2 In Panel switch on off 2 If you need information on Stylus Color 740 go to Section A 1 2 1 Table A 3 Connector CN4 Pin Signal Name ei Function 1 PE In Sensor detect signal Table A 1 2 GND Ground Connector Summary of C206MAIN B C255MAIN C256MAIN 3 PEV Sensor power supply 5V Connector Function Table to refer to CN1 Parallel I F connector Chapter 1 Table 1 10 CN2 Serial I F connector Chapter 1 Table 1 16 Table A 4 Connector CN5 CN3 To Control panel Table A 2 Pin Signal Name 1 0 Function CN4 To PE sensor Table A 3 1 HP In Sensor detect signal CN5 To HP sensor Table A 4 2 GND Ground CN6 To CR motor Table A 5 3 HPV Sensor power supply 5V CN7 To PF motor Table A 6 CN8 To Printhead Table A 7 CN10 To Power supply board Table A 9 CN11 To ASF sensor Table A 10 Chapter 7 Appendix 163 EPSON Stylus Color 440 640 740 Revision A Table A 5 Connector CN6 Table A 7 Connector CN8 C206MAIN B C255MAIN Pin Signal Name 1 0 Function Pin Signal Name 1 0 Function 1 CRA Out Phase drive signal A 1 BCO In Black ink cartridge detect signal 2 CRB Out Phase drive signal B 2 CCO In Color ink cartridge detect signal 3 CR A Out
157. rms data transmission that motives Micro Step O Head voltage control In the ink jet printers drive voltage wave form trapezoidal wave form in order to drive PZT is formed in the various shapes according to the types of the printers Therefore it is necessary to form appropriate drive form for each head Head voltage control forms necessary wave form for each control signals and outputs them O EEPROM control The correction value to eliminate the error of each printers at production process is installed in the fixed address of IC When the power is turned off the contents set by users is written instantly and is red to the RAM when the power is turned on O Sensor Data The sensor detects information at the various conditions which is necessary for the printer operation The gate array recognizes signals and changes over to the next control O Timer Data The timer IC that uses lithium battery as power source monitors how long the power is off When the power is turned on it is changed to appropriate cleaning level according to the time that the power is off Chapter 2 Operating Principles O Parallel I F control With the use of IEEE1284 Nibble mode it became possible not only to receive the data from the host but also to return various information which the printer possesses to the host Common Driver IC The trapezoidal wave form circuit for the head drive is HIC an improvement from the previous discrete structure Becaus
158. rned off the electrolytic capacitor keeps Q84 on for a while By this electrolytic capacitor output is hold at least 30 seconds even after the power is turned off This time helps the printer to complete the P Off operation Chapter 2 Operating Principles 59 EPSON Stylus Color 440 640 740 Revision A 2 2 2 C206 Main B C255 Main for Stylus Color 440 Various DC voltage generated on the C206 PSB PSE board is added various signals in order to drive the printer function on the C206 main B C255 main board the drive of CR PF Pump motor and printing head is performed Following figure shows the circuit diagram for Stylus Color 440 CN8 HD FFC CR Motor RK Q7 amp Q9 P ROM D RAM PF Motor IC3 IC4 EEPROM Reset IC IC11 IC9 Motor i Driver E05B44 c14 1C15 IC2 CN3 O C206 ait lt gt ASF Sensor CN4 lt gt A NS HP Sensor CN5 PE Sensor i Figure 2 17 C206 Main B C255 Main Board Block for Stylus Color 440 Chapter 2 Operating Principles 60 EPSON Stylus Color 440 640 740 Revision A CPU The 16 bit CPU which is mounted on Stylus Color 440 is running at 25Mhz Gate array manages most of controls and monitors Likewise the Stylus Color the D RAM is applied for RAM which is used as work area for receiving data and developing the data and CPU manages its control such as CE RAS CAS controls Gate Array E05B44 controls the following functions O Motor control Each motor perfo
159. s of Paper Eject Roller Actually these parts are one unit Pump Drive Roller Figure 2 12 Pump Mechanism Power Transmission Process 53 EPSON Stylus Color 440 640 740 Revision A The table below shows PF Pump motor rotational direction and pump system operation Table 2 7 Relationship between Pump Motor Rotation and it s Work PF Pump motor rotational direction Pump unit operation CW Rotation CCW Rotation Clockwise CW 1 Release from the Pump pressure welding forward rotation 2 Head cleaner reset 3 Carriage lock reset Counterclockwise CCW 1 Rotation towards pump pressure welding backward rotation 2 Head cleaner set 3 Carriage lock set Refer to Figure 1 13 in the right column which shows the pump operations at clockwise and counterclockwise rotation In the ink absorptive operation such as cleaning flushing and initial ink charge except for printing operation ink in the ink cartridge drains to the Tube released waste ink absorber pad through the cap by the pump unit drive In case of printing and flashing drive ink is popped out by the PZT in the print head but in case of absorptive operation such as cleaning and initial ink charge ink absorption is performed only by the pump drive without PZT drive after the head surface is adhered to the cap The next page explains cap mechanism and relation between printer operation and cap Figure 2 13 Pump Roller Rotation and it s Operation Chapter
160. s well as printing Therefore the printer wastes certain amount of ink and counts the amount of waste ink and drains it into the waste ink pad Once the amount of waste ink reaches the predefined limit the printer indicates MAINTENANCE ERROR and the waste ink pad should be replaced See Chapter 1 Page 1 25 for details 154 EPSON Stylus Color 440 640 740 Revision A 6 1 3 Lubrication Table 6 2 Lubrication Point The type and amount of oil and grease used to lubricated the printer No ences Remarks 3 parts are determined based on the results of internal evaluations nids Do notput grease around the paper Theret S t ly th ified t anouta oland Contact between ROLLER PF and path erefore be sure o apply the speci led type a amou We PAPER GUIDE REAR Use a syringe to apply it grease to the specified part of the printer mechanism during servicing lt Lubricant Types G26 Apply grease while rotating GEAR Fat 67 2 Lubrication Amount m Never use oil and the grease other than those A 7 7 A p i A half turn of ROLLER PF specified in this manual Use of different types of lubri t d th inter and th 2 lt Lubrication Point gt Lubricate the contact points between pata iz ee tee ee id Contact points between PAPER the hooks on PAPER GUIDE components GUIDE FRONT and each roller FRONT and each roller m Never apply larger amount of lubricant than specif
161. sassemble and Adjustment END Figure 3 1 Troubleshooting Process Flowchart Chapter 3 Troubleshooting 82 Sensor Name Paper End Senior Table 3 2 Sensor Check Location Stylus Color 440 640 CN4 Pins 1 amp 2 Stylus Color 740 CN5 Pins 1 amp 2 Signal Level Open less than 0 7 V Sensor Status Paper loaded Close more than 2 4 V No paper Carriage Home Position Sensor Stylus Color 440 640 CN5 Pins 1 amp 2 Stylus Color 740 CN4 Pins 1 amp 2 Open less than 0 7 V Home position Close more than 2 4 V Out of home position ASF Phase Sensor Stylus Color 440 640 CN11 Pins 1 amp 2 Stylus Color 740 CN6 Pins 1 amp 2 Open less than 0 7 V Home position Close more than 2 4 V Out of home position Black Cartridge Sensor Stylus Color 440 640 CN8 Pins 1 amp 18 Stylus Color 740 CN9 Pins 1 amp 19 On OV Black cartridge out Off more than 2 4 V Black cartridge installed Color Cartridge Sensor Stylus Color 440 640 CN8 Pins 2 amp 18 Stylus Color 740 CN9 Pins 2 amp 19 On OV Color cartridge out Off more than 2 4 V Color cartridge installed Thermistor Stylus Color 440 640 CN8 Pins 3 amp 18 Stylus Color 740 CN9 Pins 2 amp 19 Analog data Change the VH voltage of charge pulse for common driver circuit Chapter 3 Troubleshooting EPSON Stylus Color 440 640 740 Revis
162. se drive Wiping 40 480 W1 2 2 2 phase drive Cap d Valve Release 20 240 W1 2 2 2 phase drive Withdrawal of cap 5 60 W1 2 2 2 phase drive Chapter 2 Operating Principles Table 2 3 Motor Control at Each Modes Stylus Color 740 Drive Speed Drive frequency Drive method Printing mode CPS PPS l W1 2 2 2 1 2 High Speed Skip 340 4080 phase drive Normal Printing 200 2400 W1 2 2 2 phase drive Capping 80 960 2W1 2 2 2 phase drive Wiping 40 480 2W1 2 2 2 phase drive Cap Valve 20 240 4W1 2 2 2 phase drive Release Withdrawal of cap 5 60 4W1 2 2 2 phase drive Figure 2 5 CR PF Motor Internal Circuit Diagram 47 EPSON Stylus Color 440 640 740 See Figure 2 6 which shows the carriage mechanism o Carriage Motor Paper Feed Motor Carriage home position Sensor PF Roller Timing Belt Carriage Unit l L E III i a Eject Roller Paper guide Front Front Side pyy Rear Side Parallelism Adjust Lever Carriage Guide Shaft Figure 2 6 Carriage Mechanism Top view The printhead a core of the printing mechanism is stored in the carriage unit When the adjustment lever is moved up and down this printhead maintains the printhead tilt in a flexible and adjustable
163. ses lithium battery as power source monitors how long the power is off When the power is turned on it is changed to appropriate cleaning level according to the time that the power is off O Serial I F Control The gate array receives serial data through the transceiver IC O Parallel I F control With the use of IEEE1284 Nibble mode it became possible not only to receive the data from the host but also to return various information which the printer possesses to the host O USB I F Control The transceiver circuit which control the USB interface has been incorporated into this gate array Common Driver IC The trapezoidal wave form circuit for head drive is became to HIC from the previous discrete structure Because of this it is not necessary to adjust the adjustable VR on the board during production process Various electric charge discharge control signals are all processed in the HIC CR PF Motor Drive Circuit Constant current drive is performed by the HIC Out of this only CR Motor is controlled for Micro Step control and HIC becomes possible to flow the appropriate current value at each steps PF Motor has only 1 2 2 2 phase drive method Also bipolar drive is performed on the 4 cables individually 65 EPSON Stylus Color 440 640 740 Revision A 2 2 4 1 Reset Circuits C206 Main B C255 Main for Stylus Color 440 The reset circuit prevents the CPU from running away which is caused by the unstable voltage in the
164. shielded wires and it is effective to connect to E is Lois each chassis GND in the PC and printer for electrostatic noise de Dion l NOTE 2 Conditions for Interface are based on TTL level Rise and falltime a gt a gt should be within 0 2us PANG no on x l l NOTE 3 Refer to Figure 1 9 for transmission timing of each signals Treply Tack Tnbusy 1 NOTE 4 Do not perform data transmission ignoring ACK or BUSY signal Perform the data transmission after confirming that Figure 1 9 Data Transmission Timing for Forward Channel ACK and BUSY signals are Low Table 1 13 Maximum and Minimum Timing for Data Transmission NOTE 5 It is possible to perform the printing test including interface circuit without using equipment from outside when 8 bit data signal 20 27 pin is set to appropriate word code and connect them tsetup 500ns forcefully to ACK and STRB RG RS tstb 500ns tready 0 tbusy 500ns tt out 120ns tt in 200ns treply 0 tack 500ns 10us tnbusy 0 tnext 0 Rise and fall time of every output signal Rise and fall time of every input signal Typical timing for the tack parameter is shown below Chapter 1 Product Description 29 EPSON Stylus Color 440 640 740 Revision A High speed Table 1 14 Typical Tack Timing Parallel UE Mode Typical Tack Timing for Stylus Color 440 640 only for Stylus Color 740 2us
165. structure using a tilt adjustment mechanism Also the parallelism adjustment lever mounted on the left and right sides of the carriage guide shaft adjusts parallelism between the platen and shaft when the shaft is installed to the printer mechanism After this adjustment is completed moving PG adjustment lever changes space between the platen surface and the print head surface to one of two possibilities either 1 04 mm or 1 74mm It is possible to vary the space between platen surface and print head by rotating the shafts of the carriage guide shaft which itself is decentralized with the operation of PG lever This is the mechanism that the user can use to adjust the appropriate PG value Chapter 2 Operating Principles Revision A according to the printing result or any other environmental conditions such as paper curl Carriage lock mechanism is to prevent the carriage from being left at an uncapped position for a long time because of vibration during the printer transport or mishandling by the users If the carriage is left uncapped for long time ink on the print head surface gradually becomes thick As a result the nozzle will be unable to discharge ink To make matters worse the holes crater of nozzle may be completely clogged by the thick ink and it may not be able to return to the normal condition just by cleaning operation In order to prevent this printer goes to carriage lock state at the following conditions See the followi
166. t printer indicates this error and stops The absorber in the printer enclosure is needed to be replaced with new one by a service person The ink quantity that is absorbed by the absorber waste ink pad is monitored by the software counter as total ink counter This counter is added by point system and absorber s maximum ability is set at the following reference value Stylus Color 440 Maximum Counter Point 21000 Point Stylus Color 640 Maximum Counter Point 19800 Point Stylus Color 740 Maximum Counter Point 40900 Point NOTE Since 1 point of counter point equals 0 02 ml the actual ink amount becomes Stylus Color 440 Maximum Ink Capacity 420 ml Stylus Color 640 Maximum Ink Capacity 396 ml Stylus Color 740 Maximum Ink Capacity 818 ml 1 5 6 Fatal Errors When the printer detects fatal errors such as carriage control error or CG access error it enters a fatal error mode as described below 1 Carriage control Error m Parallel adjustment malfunction m Home position malfunction m Timing belt tension malfunction shortage of lubricant on the carriage guide shaft etc 2 CG Access Error m Short circuit etc 36 EPSON Stylus Color 440 640 740 Revision A 1 6 Printer Initialization Stylus Color 440 640 740 have three kinds of initialization methods Following explains each initialization 1 Power on initialization This printer is initialized when turning the printer power on or printer recognized t
167. t correct Perform platen gap adjustment Refer to Chapter4 Dot shooting direction is tilted because head surface is not clean Perform the cleaning operation several times and check printing Perform the cleaning operation l C is defective Install a new UC and perform the self test Replace UC Head unit is defective Perform the cleaning operation several times and check printing Replace the head unit Chapter 3 Troubleshooting 97 EPSON Stylus Color 440 640 740 Revision A Table 3 7 Repair of the Printer Mechanism Abnormal paper feeding Paper is not fed Friction of the PF roller Check if the PF roller rotates when paper is not fed Clean the PF roller by the cleaning sheet Replace the PF roller if it does not recover Abnormal operation of the hopper Check movement of the ASF hopper visually Replace ASF Malfunction of ASF drive change over Check if the ASF gear rotates visually Replace gears of the ASF drive change over Friction of the PF roller Check if the PF roller slips during paper feeding Clean the PF roller by the cleaning sheet Replace the PF roller if it does not recover Printer stops during initialization Fatal error appears ASF sensor is defective Check the signal level of the ASF sensor Refer to Table 5 2 Replace ASF sensor PE sensor is defective Check the signal level of
168. ta is logical 0 These signals are used to transfer the 1284 extensibility request values to the printer 10 PrtClk 28 O Printer clock signal Printer busy signal and reverse channel transfer data 11 PtrBusy Data Bit 3 7 29 O bit 3 or 7 Acknowledge data request signal and reverse channel 12 AckData Req DataBit 2 6 28 O transfer data bit 2 or 6 13 Xflag DataBit 1 5 28 O ie signal and reverse channel transfer data bit 1 or 14 HostBusy 30 Host busy signal 31 ANIT 30 Not used 32 DataAvail DataBit 0 4 29 o Data available signal and reverse channel transfer data bit O or 4 36 1284 Active 30 1284 Active Signal 18 Logic H LES 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 Note In Out refers to the direction of signal flow from the printer s point of view Chapter 1 Product Description 28 EPSON Stylus Color 440 640 740 Revision A The following are the points to note when using the parallel Interface NOTE 1 Return GND pin in the table means twist pair return and is used for all control signals except for Logic H 5V Chassis Ges See sees GND and NC In this twist pair return returning side is Lu connected to GND 16 33 19 30 pin for twist pair return Also D ISTROBE nn e these cables are
169. ter Graphics mode and Character mode NOTE Character mode is only suitable for Stylus Color 740 Printable Area Figure 1 4 Printable Area for Cut sheet Chapter 1 Product Description 17 EPSON Stylus Color 440 640 740 Revision A Paper Size PW Table 1 4 Raster Graphics Mode for 3 models LM BM min A4 210 SS 6 3 297 mm 11 7 3 mm 0 1 2 l 3 mm 0 12 3 D 0 12 pati ga Letter 216 mm 8 5 279 mm 11 07 3 mm 0 127 9 mm 0 35 3 mm 0 12 SC oe B5 182 mm 7 2 257 mm 10 1 3 mm 0 12 3 mm 0 12 3 mm 0 12 ire Legal 216 mm 8 5 356 mm 14 0 3mm 0 12 9 mm 0 35 3 mm 0 12 E SE Statement 139 7 mm 5 5 215 9 mm 8 5 3 mm 0 12 3 mm 0 12 3 mm 0 12 ae Exclusive 190 5 mm 7 5 254 mm 10 3 mm 0 12 3 mm 0 12 3 mm 0 12 se No Table 1 5 Character Mode only for Stylus Color 740 Paper Size PW PL LM RM TM BM min A4 210mm 8 3 297mm 11 7 3mm 0 12 3mm 0 12 3mm 0 12 Te 3 mm 0 12 Letter 216mm 8 5 279mm 11 0 3mm 0 12 9mm 0 35 3mm 0 12 SC SE B5 182mm 7 2 257mm 10 1 3mm 0 12 3mm 0 12 3mm 0 12 ean SCH Legal 216mm 8 5 356mm 14 0 3mm 0 12 9mm 0 35 3mm 0 12 SC GE Statement 139 7mm 5 5 215 9mm 8 5 3mm 0 12 3mm 0 12 3mm 0 12 SE SN Ex
170. thead for Stylus Color 740 Printhead Unit Figure 4 6 Removing the Print Head 110 Chapter 4 Disassembly and Assembly EPSON Stylus Color 440 640 740 Revision A This part should be touching the r CR shaft receiver 4 Make sure aa ie rotrusion is i ao tch of the ri head Make sure that the protrusion of the carriage is aligned with the hole of the earth board Carriage Assembly I Print Head i Th Tr Nozzle Selecto Stylus Color AAG 1 piece Nozzle Selector has been enclosed into head Stylus Color 640 2 pieces Stylus Color 740 ow Ny we dE ps SE Figure 4 7 Installing the Printhead Chapter 4 Disassembly and Assembly 111 EPSON Stylus Color 440 640 740 4 2 4 2 Removing the Absorber Tray Assembly A 1 2 Remove the housing Refer to Section 4 2 1 Remove the operation panel Refer to Section 4 2 3 Remove one screw No 4 securing Absorber tray assembly located on the right side of the printer mechanism On the right side of the printer mechanism release the hook securing the Absorber tray assembly AT to the frame and remove it pulling it downward sure to fix it with the spacer tray in the left side of the an When installing the absorber tray assembly A make printer mechanism Chapter 4 Disassembly and Assembly Revision A De V c hm m Rammed Spacer Tray oo em
171. tion 1 BCO In Black ink cartridge detect signal 2 CCO In Color ink cartridge detect signal 3 THM In Thermistor detect signal 4 GND Ground 5 LAT Out Head data latch pulse output 6 GND Ground 7 SI6 Out Head data output 6 8 SI5 Out Head data output 5 9 SI4 Out Head data output 4 10 SI3 Out Head data output 3 11 SI2 Out Head data output 2 12 SI1 Out Head data output 1 13 GND Ground 14 CLK Out Clock pulse for head data transfer 15 GND Ground 16 NCHG Out Head all on pulse output 17 GND Ground 18 VDD gt Logic power supply 5V 19 GND2 Ground 20 GND2 Ground 21 GND2 Ground 22 GND2 Ground 23 COM Head drive power supply 24 COM Head drive power supply 25 COM Head drive power supply 26 COM Head drive power supply 27 VHV Head drive voltage control signal Chapter 7 Appendix 168 EPSON Stylus Color 440 640 740 Revision A A 2 EEPROM Address Map 640 EEPROM ADDRESS Map Stylus Color 440 This section provides EEPROM address map for the Stylus Color 440 and Stylus Color 640 Since the contents of the EEPROM maps of the main boards C206MAIN B C255MAIN and C256MAIN are mostly common they are combined into one table except for some addresses This section contains EEPROM map for Stylus Color 440 640 and Stylus Color 740 As it is in Section A 2 this section is separated in 2 parts as shown below Therefore be sure to refer to the correct section d
172. tylus Color 740 174 Circuit Board Component Layouts 178 Exploded Diagrams ce eee eee eee nenea en na 188 Part LISE ss ia cpt ao nai Dn aha o Ta a mg een eth ou tel Daia i 198 Part List for Stylus Color AA0 G40 198 Part List for Stylus Color 740 200 Cireuit Dia Grams eect ac a a a a acea a e aaa nn nn a Nr qe 202 Download Service Manual and Resetter Printer at http printer1 blogspot com Download Service Manual and Resetter Printer at http printer1 blogspot com EPSON Stylus Color 440 640 740 Revision A 1 1 FEATURES EPSON Stylus Color 440 640 740 are designed for PC users at home and low price for hat high performance Also Stylus Color 440 printer has the same high color print quality 720 X 720dpi as Stylus ProXL and Stylus Color 640 740 have the same high color print quality 1440 X 720 as Stylus Color 600 and Stylus Pro 5000 The major printer features are m Chapter 1 Product Description 9 High color print quality 720 H x 720 V dpi printing for Stylus Color 440 1440 H X 720 V dpi printing for Stylus Color 640 740 4 color printing YMCBk Traditional and New Microwave Black 64 nozzles CMY 21 nozzles for Stylus Color 440 Black 64 nozzles CMY 32 color nozzles for Stylus Color 640 Black 144 nozzles CMY 48 color nozzles for Stylus Color 740 Built in auto sheet feeder Holds 100 cut sheets 55g m2 Holds 10 envelopes Holds 10 transparency films Holds 65 special papers
173. us Color 740 proceed to Section 5 2 2 2 2 Step 1 138 EPSON Stylus Color 440 640 740 Revision A 5 2 2 2 2 Setting the CG Destination information For Stylus 2 For Stylus Color 740 only Color 740 only Perform one of the followings Since there are two models for Stylus Color 740 the standard model and NLSP model you are required to set the correct CG according to the model by following the steps described in this section m f your Stylus Color 740 supports the NLSP characters select NLSP by using the reverse carols Be sure to perform this operation because a spare C257 Main board has the CG set to 1 For Stylus Color 740 only Standard at factory Select No on the Initial Screen 2 Figure 5 7 and the screen m If your Stylus Color 740 does not support the NLSP characters below appears select Standard The program automatically returns to the Initial Screen 2 Figure 5 7 after a few seconds 2 MS DOS Prompt SC740 Auto d El el E sf al gt The CG value has been correctly set Return to Section 5 2 2 2 Step 6 to enter the main menu not support the NLSP characters You can distinguish the NLSP model from Standard model by referring to Esc Previous Up arr elect Enter OK the following point on the C257 Main board m Standard There is no IC6 on C257 Main board m NLSP There is IC6 on C257 Main board air Do not select the NLSP if your Stylus Color 740 does Figure
174. using the Up Down arrow key select Adjustment in the main menu Figure 5 23 Head Voltage ID Input Menu Chapter 5 Adjustment 146 EPSON Stylus Color 440 640 740 Revision A 6 When you input the head ID value the screen automatically 7 Press the Esc key once The screen returns to the Head Voltage ID advances consequently as shown below Check Input Select Menu See Figure 5 22 8 By using the Up Down arrow key select Check present data on the screen The screen below appears MS DOS Prompt SC640 LE Avo allee 5 sf al MS MS DOS Prompt SC640 Avo oee E 6 al Reading the present head voltage value HEAD VOLTAGE ID 18218 Note The information provided in this service tool is common for the Stylus Color 440 640 and 740 except for some printer specific information such as ink counter limits Esc Previous This process takes about Wei EE 5 d The information provided in this service tool is common for the Stylus Color 440 640 seconds and 740 except for some printer specific information such as ink counter limits Figure 5 25 Input ID Confirmation Menu has been written in EEPROM as the HEAD ACTUATOR VOLTAGE ID Esc Previous Note The information provided in this service tool is common for the Stylus Color 440 640 and 740 except for some printer specific information such as ink counter limits Figure 5 24 Head Voltage ID Writing S
175. ve Circuit for Stylus Color 640 Chapter 2 Operating Principles 79 Revision A EPSON Stylus Color 440 640 740 E05B588 IC2 LB1847 1C11 CRPHAA CRPHAB CRENBA CRENBB ENBL2 Vref1 Vref2 Current Detection Figure 2 40 Carriage Motor Drive Circuit for Stylus Color 740 Chapter 2 Operating Principles 80 EPSON Stylus Color 440 640 740 Revision A 3 1 Troubleshooting Table 3 1 Motor Resistance and Measurement Procedure Motor Name Location Check Point Resistance The printer may exhibit different symptoms for the same problem which CR Motor Stylus Color 440 640 Pins 1 amp 3 7 8 Ohms 10 makes troubleshooting more difficult This section however provides CNE Main board Ee e Stylus Color 740 simple and effective ways to facilitate troubleshooting CN7 Main board PF Pump Motor Stylus Color 440 640 Pins 1 amp 3 7 8 Ohms 10 The following flowchart illustrates the main steps of the trouble shooting HO Gg Main board pins 2 8 4 process e Stylus Color 740 CN8 Main board Main board refers to the following Stylus Color 440 C206Main B C255Main Stylus Color 640 C256Main Stylus Color 740 C257Main See the following page for Table 3 2 Sensor Check and Table 3 3 Unit Level Troubleshooting Printer Condition and Panel Status Unit Repair Unit Repair Unit Repair PSB PSE Main board Printer Mechanism Yy Di
176. vitable entry of bubbles created during installation of a new ink cartridge can be absorbed to ink itself since the ink in the cartridge is deaerated during the production process However this ability for absorption can last only about one hour after the cartridge is installed Chapter 1 Product Description Step 2 Even after the bubble absorbing ability described above stops there is problem about entering bubbles as long as the ink cartridge is installed in the printer However if the ink cartridge which does not have absorbing ability any more is once removed from the printer new coming bubbles into the cartridge will never disappear naturally These bubbles may cause not only printing malfunction but also thickening ink This thickened ink goes into the head and clogs ink path in the head or nozzle and may cause serious head damage Step 3 As standard specification for Stylus Color 400 ink consumption counter is reset when the ink cartridge is removed If an ink cartridge is removed and re installed unnecessarily the value on the ink consumption monitor which the user can check will be wrong and printer may keep printing even though the ink cartridge is installed empty This may cause head damage 1 5 2 Paper Out When the printer fails to load a sheet after power on operation including timer cleaning is done and Load Eject button on the FF command or operation panel is pressed it goes into a paper out error 1 5 3 Paper Ja
177. xing Shaft 712 Compression Spring 3 23 745 Sheet Paper Feed 713 Pad Brake Edge Guide 746 Holder Sheet Paper Feed 714 Reinforcing Plate Hopper 747 Shaft Mouting CR 716 Pad Assy Right 748 CBS P4 Screw 3x6 F Zn 717 Lever Pad Release Right 750 Spur Gear 34 718 Bar Spring Holder Pad 751 Paper Guide Lower Chapter 7 Appendix 201 EPSON Stylus Color 440 640 740 Revision B A 6 Circuit Diagrams See the following pages for the circuit diagrams below NOTE For circuit diagram for C206MAIN B refer to the hard copies as no pdf files for it is provided C206MAIN B circuit diagram 1 2 2 2 See the hard copies C255MAIN circuit diagram C256MAIN circuit diagram C257MAIN circuit diagram C206PSB circuit diagram C206PSE circuit diagram C257PSB circuit diagram C257PSE circuit diagram Iri C257PSK circuit diagram Chapter 7 Appendix 202 EPSON Stylus Color 440 640 740 Revision B C206MAIN B Circuit diagrams 1of 2 See the hard copy Chapter 7 Appendix 203 EPSON Stylus Color 440 640 740 Revision B C206MAIN B Circuit diagrams 2 of 2 See the hard copy Chapter 7 Appendix 204 Li ER pie ze 5 Hi TE a tf HE Hi fd n67 CAS EE NI 3 FBS ANN SBR j N VU Sie 5 RIANA OS 4 20
178. ype gt G 26 lt Lubrication Amount gt Approximately 5 mm long lt Lubrication Point gt Bushings for ROLLER PF Left Inside the bushing Right Inside the bushing near the pump assembly lt Lubricant Type gt G 26 lt Lubrication Amount gt Approximately 3 mm diametrically For the right bushing apply it from the paper path side and wipe off any grease sticking out to the cap assembly side Rotate ROLLER PF after applying grease to evenly distribute it in the bushing Use a syringe to apply it Contact points between HOPPER and LEVER HOPPER RELEASE lt Lubricant Type gt G 26 lt Lubrication Amount gt Evenly apply lubrication to the points lt Lubrication Point gt The round cutout in the left frame of ASF GEAR 34 is inserted to the cutout lt Lubricant Type gt G 26 lt Lubrication Amount gt Evenly apply inside the hole Completely wipe off any grease sticking out to the inner side of ASF lt Lubrication Point gt Both Left Right Bushings for ROLLER EXIT lt Lubricant Type gt G 26 lt Lubrication Amount gt Evenly apply inside the bushings Avoid applying grease around the paper path Use a syringe to apply it lt Lubrication Point gt Contact points between HOLDER PULLEY DRIVEN and FRAME UPPER lt Lubricant Type gt G 26 lt Lubrication Amount gt 2 mm long for each po

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