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1. Precautions

1. SCREW TAPTITE 6003 000119 gt gt gt lt gt lt gt lt gt x gt gt lt O O x x gt lt gt O gt lt x gt lt gt lt gt lt O lt gt x O x x x x gt lt 4 N 6 7 Exploded View and Parts List 6 4 Frame Lower Assembly Transfer Roller 6 8 Exploded View and Parts List Frame Lower Assembly Parts List Description SEC Code O Service available X Service not available ELA HOU FRAME LOWER JC81 00463A 110V CBF HARNESS OPE GND JC39 00036A CBF HARNESS FUSER JC39 00042A SPRING P R APOLLO JC61 00014A SPRING GUIDE DEVE JC61 00038A BEARING PRESSURE R JC66 10205A IPR SAW PLATE JC70 00030A IPR EARTH TRANS JC70 00031A IPR GROUND GUIDE JC70 00032A N O1 IPR GROUND HVPS JC70 00034A IPR GROUND FUSER JC70 00035A IPR GUIDE TR JC70 00039A IPR PLATE TERMINAL JC70 00040A IPR GROUND DRIVE JC70 00067A PMO BUSHING TERMINAL JC72 00103A PMO ACTUATOR EXIT JC72 00130A PMO GUIDE INPUT JC72 00149A PCT FILM SAW JC72 00217A PMO HOLDER PR JC72 00531A PMO HOLDER EX
2. 6 3 Exploded View and Parts List 6 2 Shield Engine Unit Assembly 6 4 Exploded View and Parts List Shield Engine Unit Assembly Parts List Description SEC Code 4 0 Service available X Service not available D Remark ELA HOU SHIELD ENGINE JC96 02087D CABLE FLAT J3809 001161 CBF HARNESS LSU JC39 00043A CBF HARNESS MAIN HVPS JC39 00109A CBF HARNESS MAIN HOOK JC39 00174A CBF HARNESS MODULA 2 JC39 00175A CBF HARNESS JC39 40022A IPR SHIELD ENGINE JC70 00200A PO IPR SHILED SMPS JC70 00263A MEC GUIDE STAKE ASS Y JC75 00087A PBA MAIN MAIN JC92 01308C ELA M MEDIO AUD SPEAKER JC96 01607A WASHER E T 6031 000120 CBF HARNESS THERMISTOR JC39 00045A SCREW MACHINE 6001 000568 SCREW TAPTITE 6003 000221 p SCREW TAPTITE 6003 000264 gt x x x x gt x O O x x x x x x x x B 6 5 Exploded View and Parts List 6 3 Engine Assembly lt 5 8 8 4 Bushing Shaft 6 6 Exploded View and Parts List Engine Assembly Parts List O Service available X Service not available D Description SEC Code 9o gt Re
3. 3 40 Actuator Empty Feeder 1 Before you remove the actuator empty feeder you should remove Rear cover see page 3 9 Shield Engine ass y see page 3 19 Remove one connector from the main board and two screws securing the holder feed ass y then remove the holder feeder ass y Disassembly and Reassembly 3 Remove the Feed sensor and the Empty sensor Feed Sensor 3 23 Disassembly and Reassembly 3 41 Roller Feeder Before you remove the actuator empty feeder you 3 Rotate the pick up bushing as shown below and should remove remove holder feeder 55 and roller feeder All covers see page 3 0 Motor ass y see page 3 15 2 Release two snap fits and remove the gear feed clutch feed and the spring clutch Spring clutch 4 Separate the Roller Feeder from the Holder Feeder Ass y Mi Clutch feed a Roller Feed T Holder Feed 3 24 4 Circuit Description 4 1 Main PBA 4 1 1 Summary The main circuit that consists of CPU MFP controller including various I O device drivers system memory scanner printer motor driver PC I F and FAX transceiver controls the whole system The entire structure of the main circuit is as f
4. Item SYMBOL MIN TYP MAX UNIT NOTE Power Supply VDD 4 75 5 0 5 25 V VLED 4 75 5 0 5 25 V Input Voltage VIH 32 V SI amp CLK VIL 0 8 V Input Current IIH 20 pA SI amp CLK IIH 0 2 mA LED Current ILEDr 30 mA REF ILEDg 60 mA REF ILEDb 60 mA REF Clock Frequency CLK 2 MHz Clock Pulse L Duty 15 tw to Setup Time tsu 0 tw 2 ns Hold Time th tw 2 ns SIG Delay Time tod 1 250 ns 2 30 ns Sampling Reriod ts 90 ns CIS Driver Clock Timing 1st ts 4 18 Circuit Description CIS Block Diagram VLED LEDR LEDG LEDB VDD GND 51 CLK SIG n n n O ROD LENS ARRAY 151 SENSOR ST LEDR OFF G OFF LED B OFF 2 5ms 1 2ms OFF OFF OFF B O P R O P G O P B O P R O P G O P 7 5ms line 4 19 Circuit Description 4 1 7 HOST INTERFACE Parallel Port Interface PARALLEL PORT INTERFACE PART KS32C61100 has the Parallel Port Interface Part that enables Parallel Interface with PC This part is connected to PC through Centronics connector It generates major control signals that are used to actuate parallel communication It is comprised of ERROR PE BUSY ACK SLCT INIT SLCTIN AUTOFD and STB This part and the PC data transmission method support the method specified in IEEE P1283 Parallel Port Standard http Awww fapo com ieee1284 html
5. O O1 OJN GEAR 39 20 JC66 00304A GEAR IDLE 30 JC66 00305A IPR BRKT MOTOR JC70 00199A NPR GROUND CIS JC71 00018A PMO OPEN LOCKER L JC72 00140A PMO OPEN LOCKER R JC72 00141A PMO BRKT SCAN B D JC72 00222A PMO OPEN BUTTON JC72 00273A PMO COVER MOTOR JC72 00670A PMO COVER FRONT JC72 00673A PMO DUMMY CIS L JC72 00495A PMO DUMMY CIS R JC72 00496A PMO STOPPER EXIT JC72 41396B MEC ROLLER DRIVE JC75 00123A MEA ETC ROLLER ADF JC97 01452A SPECIAL SCREW JG60 10001A LOCKER TX JG64 30001A GEAR IDLE25 JG66 40036A PMO SHAFT EXIT JG72 40042A PMO GEAR TRANS B4 JG72 40741A PMO BUSHING TX B4 JG72 40744A RING C 6044 000159 SPRING CIS JC61 00015A SCREW MACHINE 6001 000131 SCREW TAPPING 6002 000175 SCREW TAPPING 6002 001078 SCREW TAPTITE 6003 000196 SCREW TAPTITE 6003 000119 SCREW TAPTITE 6003 000119 SA X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X 6 17 Exploded View and Parts List 6 10 RX Drive Unit Assembly RX Drive Assembly Parts List Description SEC Code 9o gt Remark ELA HOU RX DRIVE JC96 01755A MOTOR STEP JC31 00005A PMO GEA
6. 10 v ________ Modem Interconnect Telephone Line Line Interface AGND RESERVED RESERVED TALK pp 1 __ __ 7 Telephone Line Interface RESERVED EN E gus e RESERVED c 0 JN 1 E Modem interconnect A lt Oo M Modem Interconnect RESERVED RESERVED __ VDD1 XTALI CLKIN Overhead Signal Overhead Signal HOST Interface HOST Interface 5 lt o AG 42 Modem Interconnect IA OB HOST Interface p HOST interface to 4 E 17 48 19 2 2 24 2 26 2 28 2 3 3 32 E mM 39 4 IA OB HOST Interface upi PWR D2 D3 V D5 D7 RSO NC 8 ___ y Notes 1 types MI Modem interconnect IA IB Digital input OA OB Digital output Analog input O DD O DF Analog output NC No external connection required RESERVED No external connection allowed Interface Legend HOST Modem Control Unit Host DTE Data Terminal Equipment Modem Interconnect e meer Interconnect 05 C HOST Interface 6 HOST Interface 7 wo HOST Interface 52 wo HOST Interface HOST Interface AA AIO ine VDD PLL GND p 4 12 Circu
7. Two 16 byte FIFO data buffers for burst data transfer with extension up to 255 bytes NRZI encoding decoding Diagnostic capability 3 3V operation with 5V tolerant inputs 5V analog signal interface Typical power consumption Sleep mode 20 mW Normal mode 250 mWa 100 pin PQFP package 4 9 Circuit Description Signaling Rates and Data Rates Carrier Frequency Data Rate bps Symbol Rate Bits Symbol Bits Symbol Constellation Hz 0 01 0 01 Symbols Sec Data TCM Points V 34 33600 TCM Note 2 33600 3429 only Note 2 Note 2 Note 2 V 34 31200 TCM Note 2 31200 3200 min Note 2 Note 2 Note 2 V 34 28800 TCM Note 2 28800 3000 min Note 2 Note 2 Note 2 V 34 26400 TCM Note 2 26400 2800 min Note 2 Note 2 Note 2 V 34 24000 TCM Note 2 24000 2800 min Note 2 Note 2 Note 2 V 34 21600 TCM Note 2 21600 2400 min Note 2 Note 2 Note 2 V 34 19200 TCM Note 2 19200 2400 to 3429 Note 2 Note 2 Note 2 V 34 16800 TCM Note 2 16800 2400 to 3429 Note 2 Note 2 Note 2 V 34 14400 TCM Note 2 14400 2400 to 3429 Note 2 Note 2 Note 2 V 34 12000 TCM Note 2 12000 2400 to 3429 Note 2 Note 2 Note 2 V 34 9600 TCM Note 2 9600 2400 to 3429 Note 2 Note 2 Note 2 V 34 7200 TCM Note 2 7200 2400 to 3429 Note 2 Note 2 Note 2 V 34 4800 TCM Note 2 4800 2400 to 3429 Note 2 Note 2 Note 2 V 34 2400 TCM Note 2 2400 2400 only Note 2 vas rors __ esx Lee Up 10300 300 V 17 14400 TCM V 17 12000 TCM V 17 9600 TCM V 17
8. port TESTO 169 12 Test 0 pin At normal operation this pin must connected to GND TEST1 170 12 Test 1 pin At normal operation this pin must connected to GND TEST2 171 12 Test 2 pin At normal operation this pin must connected to GND 4 5 Circuit Description Signal Pin No Type Description Not external chip select Three I O banks are provided for external memory mapped I O operations Each I O bank HEC STO 1213 91 contains up to 4M half word The nECS signals indicate that an external I O bank is selected nRCS 2 51 02 Not ROM SRAM chip select KS32C65100 can access nRCS 1 GOPA 7 50 O1 up to three external ROM SRAM banks nRCS 0 corresponds to ROM SRAM bank 0 nRCS 1 to bank 1 and nRCSI0 49 01 nRCS 2 to bank 2 By controlling the nRCS signals CPU addresses can be mapped into the physical memory banks SC CONPHA 102 O1 Scan motor control Bi phase 19 SC_CONPHB gt 105 O1 Scan motor control Bi phase GOPA 20 103 104 SC_CURJ3 0 106 107 O1 Scan motor bi current uni phase PWMO 2 0 118 120 O1 PWM out signal GOPA 13 11 VDO2 GOPA 29 121 O4 Video out from PIFC VDO1 GOPA 14 122 O5 Video out from LSU control LSU CLK 123 O1 Clock for LSU motor 15 nHSYNC 1 GIP 10 125 11 HSYNC1 nLREADY GIP 11 126 11 LSU ready nHSYNC2 GIP 12 127 11 HSYNC2 VDI GIP 13 128 12 Vid
9. LSU All covers see page 3 3 3 9 2 Remove three screws securing the LSU 3 10 Disassembly and Reassembly 3 17 Transfer roller 1 Pull the cover release button on both sides of the machine and open the front cover 2 Lift the transfer roller using a proper tool Driver and take out the roller 3 18 Engine board 1 Before you remove the Engine board you should 2 Unplug five connectors and remove one screw from remove the engine board then remove the board All covers see page 3 3 3 9 LSU see page 3 10 Disassembly and Reassembly 3 19 Pick up roller ass y 4 Remove two screws and remove the roller from the 1 Before you remove the pick up roller ass y you plate should remove All covers see page 3 3 3 9 LSU see page 3 10 2 Unplug all the connectors from the engine board Note When you reassemble the pick up roller make sure that the right end of the pick up roller fits into the pick up gear shaft 3 Remove four screws securing the plate upper and remove the plate upper as below Pick up gear shaft 3 12 Disassembly and Reassembly 3 20 Knock up 5 1 Before you remove the knock up ass y you should 3 Remove the knock up ass y from the main frame remove All covers see page 3 3 3 9 LSU see page 3
10. PMO ROLLER IDLE EXIT JC72 00567A SPRING EXIT JC61 00017A PMO GEAR EXIT DRV16 JC72 00143A PMO GEAR EXIT IDLE JC72 00146A GEAR FUSER 1210 JC66 00037B LABEL R CAU HOT FU JC68 30928B SPRING CLAW JC61 00064A PMO GUIDE CLAW JC72 41128A SCREW TAPTITE 6003 000119 SCREW TAPTITE 6003 000196 O O gt x O xxx x 6 11 Exploded View and Parts List 6 6 Plate Upper Unit Assembly 6 12 Exploded View and Parts List Plate Upper Unit Assembly Parts List Description SEC Code q Service available X Service not available 2 o gt Remark MEC PLATE UPPER JC75 00057A IPR UPPER PLATE JC70 00036A IPR PLATE SPRING DEV JC70 10223A ELA UNIT FUSE DEVE JC96 01117A MEA ETC ROLLER PICK UP JC97 01308A PMO HOUSING PICKUP JC72 00109A RMO ROLLER PICKUP JC73 00018A PMO IDLE PICKUP JC72 00110A MEA ETC IDLE FEED JC97 01309A PMO HOLDER PICKUP JC72 00111A SPRING FEED JC61 00011A PMO HOLDER IDLE FEED JC72 00112A CABLE CLAMP 6502 000130 ICT ROLLER IDEL FEED JC70 00154A SCREW TAPTITE 6003 000113 SCREW TAPTITE 6003 000266 SCREW TAPTITE 6003 000266 N po po n af a XX g
11. 54 c x 5 Ju C jN O 6 _ _________ _ ___ HOST interface _ 56 Sleep Modem Interconnect 57 voi P Oe TE Serial interface RESERVED __ 9 _ REsERWD _ C p r jN _____ TxD So w _ Modem Interconnect vcore 1 ew RESERVED ee rene DTE Serial Interface vs NC Ur DTE Serial Interface voo j RESET IA SLEEP M Modem Interconnect DTE Serial Interface MAVDD SPKR TXA2 4 gt lt 58 oa 59 OA M 1 Oe _ EZ on Sor c9 ne iN 70 SN 71 vee cik OUT oa 72 vyck OA Overhead Signal EYESYNC Diagnostic Signal 73 Ooa __ Overhead Signal EvecLK Diagnostic Signal 74 evexy Diagnostic Signal eno J 75 sR DrTESerial interface PwR a 1 Telephone Line Interface O DF Telephone Line Interface 77 A Telephone Line interface O DD Telephone Line Interface __ 78 ____ Interface O DD Telephone Line Interface __ 79 IRQ HOSTinterface VREF M Modem interconnect so vss cov M ea e m 9 95 e
12. 6 1 Main Assembly 6 2 Exploded View and Parts List Main Assembly Parts List Description SEC Code Service available X Service not available 9o gt Remark Muratec F 110 SMPS V1 JC44 00032A 110V UNIT LSU JC59 00006A IPR PLATE_CHANNEL JC70 00058A MEC PLATE UPPER JC75 00057A MEC TRAY P JC75 00075A MEC CRADLE JC75 00083A OPTIONAL PBA MAIN LIU PBA JC92 01379A A Co TO ELA HOU HANDSET JC96 01629B OPTIONAL ELA UNIT DEV APO6 E JC96 01871A ELA HOU ENGINE ASS Y JC96 02086A ELA HOU SHIELD ENGINE JC96 02087A ELA HOU FRAME LOWER JC81 00463A ELA HOU RX DRIVE JC96 01755A AS OPE FRONT MUR JB81 00777A PBA MAIN SCAN JC81 00472A PMO BASHING WHITE JC72 41306A PMO COVER TOP JC72 00128A MEC COVER REAR JC75 00059A PMO COVER REAR JC72 00167A PMO TRAY LARGE JC72 00180A MEC STACKER JC75 00060A PMO STACKER MAIN JC72 00169A PMO STACKER SUB JC72 00170A MEA UNIT CHUTE ASS Y JC97 01187E PMO CHUTE JC72 00371A PMO DUMMY CHUTE JC72 41334B MEC STACKER JC75 00084A PMO STACK TX APOLLO JC72 00223A PMO STACKER TX B JC72 41331D PMO CAP CRADLE JC72 00488A
13. LINE ERROR Your unit cannot connect with the remote Try again If failure persists wait an hour machine or has lost contact because of a prob or so for the line to clear then try again lem on the phone line Or turn the ECM mode on LOAD DOCUMENT You have attempted to set up a sending oper Load a document and try again ation with no document loaded LSU ERROR There occurs a problem in the LSU Unplug the power code and plug it back Laser Scanning Unit in If the problem still persists please call for service MEMORY FULL The memory is full Either delete unnecessary documents or retransmit after more memory becomes available or split the transmission into more than one operation NO ANSWER The remote machine has not answered after all Try again Make sure the remote machine is operational NO NOT ASSIGNED The one touch or speed dial location you tried to use has no number assigned to it Dial the number manually with the key pad or assign a number 5 8 Troubleshooting Error Message Description Solution NO PAPER The recording paper has run out Load the recording paper OVER HEAT The printer part in your unit has overheated Please wait until it cools down If you cannot solve the problem please call for service lear the jam gee ae Recording paper has jammed in the paper feed Gea ie jam ing area PAPER JAM 2 Clear the jam or install the cartridge Jammed pa
14. 4 FT 3KV470pF sBR306 4 _ 103 R302 R303 AN A 4 33K 100 MESS Toss X R314 100 333Z 1 7K 0302 D302 C303 102 T 103 L 304 T 500v103z 4 35 Circuit Description 4 4 2 11 Environment Recognition THV voltage recognizes changes in transfer roller environment and allows the voltage suitable for the environment in order to realize optimum image output The analog input is converted to digital output by the comparator that recognizes the environ mental changes of the transfer roller It is to allow the right transfer voltage to perform appropriate environmental response con sidering the environment and the type of paper depending on this digital output by the programs that can be input to the engine controller ROM For ML 5000 or ML 5200 series this environment recognition setting is organized as follows First set the THV standard voltage Allow 200M2 load to transfer output enable output and set the standard voltage 800V using VR201 Then set 78 CPU s recognition index value as the standard using VR302 This standard value with CPU makes sure that the current feed back is when output voltage is 800V and load is 200MO If the load shows different resistance value when 800V is output the current feedback will also be different and thus the index value will also be different according to the ind
15. Circuit Description 4 1 2 Circuit Operation CLOCK 1 System Clock Device Oscillator Frequency 9 500132 MHz KS32C65100 RISC PROCESSOR drives PLL internally and uses 37 17 MHz 2 Video Clock Device Oscillator Frequency 28 7448 MHz 3 USB Clock Device Oscillator Frequency 48 MHz 4 2 Circuit Description e KS32C65100 MICROPROCESSOR 1 KS32C65100 MICROPROCESSOR PIN amp INTERFACE Signal OSCI OSCO PLL FILTER nRESET nSLCTIN GIP 16 nAUTOF D GIP 17 nINIT GIP 15 SELECT PERROR nFAULT PPD 7 0 SAVRT SAIN SAVRB KS32C65100 master clock input KS32C65100 master clock output PLL filter 184 185 Not reset nRESET is the global reset input for the KS32C65100 For a system reset nRESET must be held to low level for at least 65 machine cycles Not select information This input signal is used by parallel port interface to request on line status information Not strobe The nSTROBE input indicates when valid data is on parallel port data bus PPD 7 0 Not auto feed The nAUTOFD input indicates whether data on the parallel port data bus PPD 7 0 is an auto feed command Otherwise the bus signals are interpreted as data only Not initialization The nINIT input signal initializes the parallel port s input control Not parallel port acknowledge The nACK output signal is issued whenever a transfer on the parallel port data bus is completed Parallel port b
16. 3 17 Disassembly and Reassembly 3 30 Thermostat 2 Remove two screws and take out thermostat from the 1 Remove one screw and remove the cover thermostat fuser ass y from the fuser ass y Halogen Lamp 3 31 3 Remove the halogen lamp from the heat roller 1 Before you remove the thermostat you should remove Va All covers see page 3 3 3 9 Fuser ass y see page 3 17 2 On the fuser ass y remove the two screws then remove the heat roller 3 18 3 32 Pressure roller Disassembly and Reassembly 1 Before you remove the pressure roller you should remove All covers see page 3 3 3 9 Fuser ass y see page 3 17 2 Lift and remove the pressure roller from the main frame 3 33 Actuator exit 1 Before you remove the actuator exit you should remove All covers see page 3 3 3 9 Fuser ass y see page 3 17 2 Lift and remove the actuator exit from the main frame 3 19 Disassembly and Reassembly 3 34 Shield Engine 55 1 Before you remove the shield engine ass y you should remove Rear cover see page 3 9 Remove eight screws securing the shield engine ass y and remove the shield engine 55 from the main frame 3 34 SMPS board Before you remove the SMPS board you should remove Rear cover see page 3 9 Shield Engine ass y see page 3 19 Remove four screws and three co
17. D R in developing unit has the defect Replace the developer Too high voltage supplied due to the setting error of transfer voltage Adjust replace HVPS 5 26 Troubleshooting 5 the OPC Trembling at the End When OHP Printing mode selected using NO the software application Recommended NO gt Set to OHP mode gt Use the recommended film OHP film used Inserted over than 10 films into the MPF When multi page OHP printng less than 10 films are guranteed When OHP printing does the fan temporarily stops and revolves Use the recommended film Other parts are touching the fan and prevents it from revolution gt Check and repair 5 27 Troubleshooting Poor Fusing Grade After printing completed any error related fuser Both ends of thermostat open YES Replace thermostat and re test Replace the contol component on engine Check any contact problem in thermistor and repair The machine placed under the severe low tempera ture for a long time While printing the voltage of pin 208 of U5 CPU on Main board is 2 0V 2 3V Thermistor s NO contact is OK YES v Place the machine Re assemble at no
18. In other words it supports both compatibility mode basic print data transmitting method the nibble mode 4bit data supports data uploading to PC and ECP enhanced capabilities port 8bits data high speed two way data transmission with PC Compatibility mode is generally referred to as the Centronics mode and this is the protocol used by most PC to transmit data to the printer ECP mode is an improved protocol for the communication between PC and peripherals such as printer and scan ner and it provides high speed two way data communication ECP mode provides two cycles in the two way data transmis sion data cycle and command cycle The command cycle has two formats Run Length Count and Channel Addressing RLE Run Length Count has high compression rate 64x and it allows real time data compression that it is useful for the printer and scanner that need to transmit large raster image that has a series of same data Channel Addressing was designed to address multiple devices with single structure For example like this system when the fax printer scanner have one structure the parallel port can be used for other purposes while the printer image is being processed This system uses RLE for high speed data transmission PC control signals and data send receive tasks such as PC data printing high speed uploading of scanned data to PC upload download of the fax data to send or receive and monitoring the system control signal and overall system from
19. roller Clean the contact point of transfer roller Check the output of high voltage terminal and adjust or replace if required Replace the toner cartidge Clean the TR holder the TR gear OPC roller gear and the transfer roller YES END 5 24 Troubleshooting Irregular Density OK after When gray transfer 2 2 taking out and pattern printing charge developing ster supplying part rocking the toner irregular density voltage drops while 0 SE cartridge persists printing gt Replace the developer Check if the guide deve YES YES YES spring works OK and repair repalce It is over the guaranty Check high voltage life of toner cartridge output and repair Check the counter replace terminals HVPS and replace it Bad images NO Irregualrity of toner aroung the no image suppy from developer area gt Repalce developer Light distortion due to the mirror ruined or LSU s diffused reflection gt Replace LSU 5 25 Troubleshooting White Spot Is it regular interval of 75 4mm Transfer voltage is normal Obstacles stuck on OPC s surface gt Clean the OPC and machine or replace developer When putting in out the developer scratch is made gt Replace the developer
20. 10 Plate upper see page 3 12 2 Pull the knock up ass y fully backward 3 21 1 Before you remove the cap pad you should remove 2 Take out the cap pad from the main frame All covers see page 3 3 3 5 LSU see page 3 10 Plate upper see page 3 12 Knock up ass y see above 3 13 Disassembly and Reassembly 3 22 1 Before you remove the holder pad you should remove All covers see page 3 3 3 9 LSU see page 3 10 Plate upper see page 3 12 Knock up ass y see 3 13 Cap Pad see 3 13 2 Remove the holder pad from the main frame 3 23 Motor ass y 1 Before you remove the motor ass y you should Note When you reassemble the motor ass y make remove sure that the boss shown in the figure below fit into the corresponding screw holes on the motor All covers see page 3 3 3 9 ass y to allow the screws to be fastened properly 2 Remove four screws securing the motor ass y and unplug one connector from the engine board then remove the motor ass y 8 14 3 24 Fan Disassembly and Reassembly 1 Before you remove the fan you should remove All covers see page 3 0 Motor see page 3 15 2 Unplug one connector from the engine board and remove the fan 3 25 Gear pick up ass y 1 Before you remove the gear pick up ass y you
21. 17 ZD401 150V R117 10K 1 101 20402 150V 20403 51V DEV EA R115 3 3K g V R106 Q105 A1413 SUPPLY OUTPUT 2 w VIL 33K 9 20404 150V 1K 101 20405 150V 20406 100V lt SUPPLY EA gt 4 lt ZD407 100V 4 34 Circuit Description 4 4 2 10 THV THV THV Output Unit Transfer output unit is the transfer output control signal PWM LOW When THV PWM LOW signal is received Q203 turns on and the steady voltage will be accepted to the non inverting terminal of OP AMP 324 As the voltage is higher than the inverting reference voltage of OP AMP OP AMP output turns high The 24V power adjusts the electric potential to 20201 and 20202 sends IB to TRANS auxiliary wire through current restrict ing resistance R215 via R212 and C204 and eventually Q204 will turn on When the current is accepted to Q402 Ic increas es to the current proportional to time through the T201 primary coil and when it reaches the Hfe limit of Q204 it will not retain the on state but will turn to off As 0402 turns off TRANS N1 will have counter electromotive force discharge energy to the secondary coil sends current to the load and outputs THV voltage through the high voltage output enable which is com prised of Regulation circuit The output voltage is determined by the DUTY width Q203 switches with PWM DUTY cycle to fluctuate the output by fluctuating the OP AMP non inverting end VREF electric
22. 6 X 194 2 mm Weight 10 2Kg With accessories Power Rating AC 110V 120V x 15 50 60Hz 3Hz AC 220V 240V 15 50 60Hz 3Hz Operating Environment Temperature 10 32 C Humidity 20 8596 RH LCD 16 X 1 Char Interface ECP IEEE1284 Halftone 64 Level Maintenance Cycle 60 000 Pages Power Power Button No Input Voltage 110V 120V Power Idle 10 WH Consumption Max 140 W H Power Save Mode OFF 5 10 15 Min Print Print Method Laser Speed 8ppm Resolution Normal 600 x 600 DPI Print language GDI Toner Save 30 50 Scan Scan Method CIS Mono Quick Scan Speed 3 sec Resolution 300 x 300 DPI Scan Width Max 216 mm Effective 210 mm Scan Length Max 1000 mm Std Mode 356 mm Copy Speed 8 ppm Resolution 600 x 600 DPI Zoom Range 50 200 Collate Reverse Yes Multi Copy 1 99 Specifications ITEMS DESCRIPTION REMARKS Telephone Handset No Optional 1 Touch Dial 20EA Speed Dial 80EA Group Dial 20EA Caller ID Yes TAD No TAD I F Yes Tone Pulse Tone DTMF Pulse Tech Mode only No Power Operation No Earth Recall No External Phone Transfer Yes FAX Compatibility ITU T G3 Communication System PSTN PABX Modem Speed 33 6Kbps Fax Modem TX Speed Using CCITT 1 Chart with Sandard Resolutio
23. 7200 TCM V 29 9600 1700 V 29 7200 1700 V 29 4800 1700 V 27 ter 4800 SK 1800 vercmme rs v5 Notes 1 Modulation legend TCM Trellis Coded Modulation QAM Quadrature Amplitude Modulation FSK Frequency Shift Keying DPSK Differential Phase Shift Keying 2 Adaptive established during handshake Carrier Frequency Hz Symbol Rate Baud V 34 Low Carrier V 34 High Carrier 2400 1600 1800 2800 1680 1867 3000 1800 2000 3200 1829 1920 3429 1959 1959 Configuration Modulation1 4 10 Modem Functions Interface Signals V 24 Interface RDCLK DTR gt OSR e a IR lt m Host Processor IRD WR ICS p 07 0 RS 4 0 IRQ RESET gt TXRQ RXRQ Selectable TXRQ output replaces RI output Selectable RXRQ output replaces DSR output EYESYNC EYECLK Circuit Description Crystal OR Oscillator telephone line f PR Line Interface RING Optional Eye Pattern Generator Speaker Amplifier Power Supply 1176DG F2 1 4 11 Circuit Description FM336 Pin Signals Pin Signal Label VO Type1 Interface 3 Pin Signal Label VO Type1 Interface 3 1 RESERVED RESERVED 2 ne A HOST interface an 3 A s ss ew 4 Ras
24. ADF JC61 00040A PMO SCAN UPPER JC72 00671A PMO LEVER SENSOR DOC JC72 00823A PMO LEVER SENSOR JC72 41322A ICT SHAFT PINCH JF70 40521B PMO HOLDER RUBBER JG72 40044A PMO ROLL PINCH JG72 40663A PMO SUPPORT ADF JG72 41083A RPR RUBBER ADF JC73 00032A MEC BRUSH ANTISTATIC JG75 10004A lt lt lt lt gt O gt gt lt gt x gt gt gt gt gt gt gt gt gt gt O 6 15 Exploded View and Parts List 6 9 Front Assembly S 3230 4530 C gy CORE 6 16 Exploded View and Parts List Front Assembly Parts List Description SEC Code O Service available X Service not available D Remark ELA HOU FRONT ASS Y JC81 00458A MEA ETC GUIDE PAPER JC97 01462A PMO GUIDE PAPER JC72 00666A PMO GUIDE DOC L JC72 00136A PMO GUIDE DOC R JC72 00137A GEAR PINION JG66 40003A IPR WASHER SPRING CU JF70 10616A CONTACT IMAGE SENSOR J0609 001125 MOTOR STEP SCAN JC31 00011B MEC ROLLER WHITE JC75 00126A CBF HARNESS SCAN CIS 300 JC39 00136A CBF HARNESS MAIN SCAN JC39 00086A CBF HARNESS SCAN GND JC39 00101A SPRING LOCKER R JC61 00027A SPRING LOCKER L JC61 00028A
25. PC are all processed through this part 4 20 Circuit Description COMPATIBILITY HARDWARE HANDSHAKING TIMING PPD 7 0 BUSY nSTROBE nACK ECP HARDWARE HANDSHAKING TIMING FORWARD 1 2 3 4 5 6 nSTROBE BUSY PPD 7 0 nAUTOFD x COMMAND BYTE 1 The host places data on the data lines and indicates a data cycle by setting nAUTOFD 2 Host asserts nSTROBE low to indicate valid data 3 Peripheral acknowledges host by setting BUSY high 4 Host sets nSTROBE high This is the edge that should be used to clock the data into the Peripheral 5 Peripheral sets BUSY low to indicate that it is ready for the next byte 6 The cycle repeats but this time it is a command cycle because nAUTOFD is low 4 21 Circuit Description ECP HARDWARE HANDSHAKING TIMING REVERSE nACK nAUTOFD PPD 7 0 BUSY DATA BYTE COMMAND BYTE nINIT PE 1 The host request a reverse channel transfer by setting nINIT low 2 The peripheral signals that it is OK to proceed by setting PE low 3 The peripheral places data on the data lines and indicates a data cycle by setting BUSY high 4 Peripheral asserts nACK low to indicate valid data 5 Host acknowledges by setting nAUTOFD high 6 Peripheral sets nACK high This is the edge that should be used to clock the data into the host 7 Host sets nAUTOFD low to indicate that it is ready for the next byte 8 The
26. PROGRAM DOWNLOAD Use this feature to download a new upgraded ROM file from a PC that is connected to the machine with a parallel cable IEEE 1284 SCAN COUNT CLEAR If performing this feature the value of scanning original until now is initialized 0 Total scan count value on the system data list becomes 0 Adjust Shading Sample Pattern CIS SHADING PROFILE DATE 4 JAN 2000 TUE 10 43 CIS 200 DPI WHITE o MEAN 212 MAX 249 MIN 56 VARIANCE 202 10 SD 14 22 UNIFORMITY 608 DV 608 BLACK MEAN 0 MAX 4 MIN 0 VARIANCE 1 23 SD 1 11 5 5 Troubleshooting 5 2 4 Printout Report In TECH mode press Report Help then select the desired list or report by using lt q or key then press Start Enter The following options are available HELP It shows a brief description the machine s basic func tions and commands Use it as a quick reference guide SENT JOURNAL This journal shows a specific information concerning trans mission activities the time and dates of up to 40 of the most recent transmissions RECEIVED JOURNAL This journal shows a specific information concerning reception activities the time and dates of up to 40 of the most recent receptions PHONEBOOK It lists all telephone numbers that have been stored in the machine SENDING CONFIRM It shows the result of the last send operation 5 2 5 Engine Test Mode The E
27. Use the recommended 5 32 Troubleshooting LSU Error Check CBF Harness28P NO MAIN to ENGINE B D YES NO MAIN B D CN9 3 Try again to connector or Replace connector P_MOTOR Signal MAIN B D CN9 4 NO Replace MAIN B D LREDADY Signal Check MAIN B D CN9 9 NO Replace LSU LDON Signal L YES Check MAIN B D CN9 6 NO Replace MAIN B D HSYNC Signal mm YES END Replace LSU 5 33 6 Exploded View and Parts List 61 Main Assembly X eee ee 62 Shield Engine Unit 63 Engine lt 6 4 Frame Lower Assembly 65 FuserAssembly 5 Ew wc re e o Re ERR E he 6 6 Plate Upper Unit Assembly 68 69 Front Assembly cuoco val n eee saka tae 6 10 RX Drive Unit Assembly Deal drawings and service parts are declared for the items with higher rate of inferiority and replaceable in the level of service description only If inferiority occurs you can replace
28. clear the machine s memory in TECH mode To communicate via direct connection with another fax machine press OHD V REQ followed by Start Enter Caution When you finish operating in Tech Mode you must turn the power Off On Troubleshooting 5 2 1 System Data List in TECH MODE FAX NUMBER NAME FAX NUMBER FAX NAME TIME DATE SETUP DATE FORMAT EUROPE USA USA TIME DATE SYSTEM SETUP LANGUAGE ENG GER FRE ITA SPA POR DUT ENGLISH SENDING MEMORY ON OFF ON SEND FROM CONFIRM ON OFF ERROR ERROR FAX PAPER SIZE LETTER A4 LEGAL LETTER TONER SAVE MODE ON OF OFF POWER SAVE MODE OFF 5 10 15 5 MIN AUTO REDUCTION ON OFF ON DISCARD SIZE 0 30mm 20MM RINGS TO ANSWER 1 7 2 STAMP RCV NAME ON OFF OFF RCV START CODE 0 9 59 ECM MODE ON OFF ON CALLER ID ON OFF OFF JUNK FAX BARRIER ON OFF OFF DRPD MODE ON OFF OFF GROUP DIAL SETUP GROUP 20 VOLUM SETUP ALARM VOLUM ON OFF ON KEY VOLUM ON OFF ON MEMORY CLEAR FAX NUMBER NAME DIAL SCHEDULE JOURNAL DEFAULT SETUP MAINTENANCE CLEANING DRUM ADJUST SHADING REMOTE TEST OFF ON NOTIFY TONER LOW OFF ON Ps only Tech Mode 5 2 Troubleshooting 5 2 2 Tech Mode Options In TECH mode press SETUP then press lt or until TECH MODE appears in the display Press Start Enter The following technical options are available Note If necessary print System Data List in TECH mode The list shows all current system data se
29. cycle repeats but this time it is a command cycle because BUSY is low 4 22 Circuit Description 4 2 OPE PBA 4 2 1 SUMMARY OPE Board is separated functionally from the main board and operated by the 48 in the board OPE and the main use UART universal asynchronous receiv er transmitter channel to exchange information OPE reset can be controlled by the main OPE micom controls key scanning and LCD and LED dis play detects documents and senses SCAN position If there occurs an event in OPE such as key touch and sensor level change it sends specific codes to the main to respond to the situation and the main analyzes these codes and oper ates the system For example it the main is to display messages in OPE the main transmits data through UART line to OPE according to the designated format and OPE displays this on LCD LED OPE s sensing is also transmitted to the main through UART line and then the main drives necessary operation OPE PBA consists of U1 MICOM HT48C5A LCD key matrix LED indicators SCAN position sensor and the doc ument detect sensor Refer to OPE Schematic Diagram and Wiring Diagram sections of this manual Display from the controller is received at U2 pin 47 RX DATA LCD drive signals are sent from P1 x pin group P1 4 P1 14 pins Machine status LED drive signals are sent from U2 LEDO LED4 Document detect sensor output is received at U2 pin 1 S
30. etc To use photo coupler PC814 you must carefully select the resister connected parallel 750 to the photo coupler in order to satisfy the voltage drop standards of England and a few other countries The diode connected to the current detector pin 5 6 was used to detect the external hook all through when the line parity turns over 4 Recall Circuit In the discrete LIU method we used the recalling method using low cost photo coupler instead of using photo MOS relay in order to initiate the recalling for handset hook off dialling after the power is turned on In this case the time break recall was enabled by switching the power transistor of the telephone circuit using the secondary CPU control 4 26 Circuit Description 4 4 Engine PPA 4 4 1 Engine Configuration 4 4 1 1 Video Controller Board Video Controller Board receives image data from the host computer and converts it into bitmap binary image or receives bitmap image directly from the host computer and sends it to the engine controller board 4 4 1 2 SMPS Board It basically receives AC input and generates ripple free DC level 5V and 5V 24V Next it supplies these voltages to each unit appropriately It also supplies AC power to heat lamp of fixing unit 4 4 1 3 HVPS Board HVPS board generates high voltages of THV MHV Supply Dev and supplies them to the developing unit to create images It is designed to realize optimum conditions for the images This
31. from an active condition of RTS are shown in Table 1 3 External Transmit Clock In synchronous communication an external transmit data clock can be connected to the modem XTCLK input The clock supplied at XTCLK must exhibit the same characteristics as TDCLK The XTCLK input is then reflected at the TDCLK output OA Received Data The modem presents received serial data to the local DTE on the Received Data RXD output and to the interface memory Receive Data Register DBUFFER in parallel data mode sequence The DATA bit must be set to complete the handshake In V 21 or V 23 configuration activating DTR causes the modem to enter the data state provided that the DATA bit is a 1 If in answer mode the modem immediately sends answer tone During the data mode deactivating DTR causes the transmitter and receiver to turn off and return to the idle OA Data Set Ready DSR ON indicates that the modem is in the data transfer state DSR OFF indicates that the DTE is to disregard all signals appearing on the interchange circuits except Ring Indicator RI DSR is OFF when the modem is in a test mode local analog or remote digital loopback The DSR status bit reflects the state of the DSR output the serial data mode TPDM bit 0 or in DBUFFER in the parallel data mode TPDM bit 1 when CTS becomes active The RTS hardware control input is logically ORed with the RTSP bit by the modem to form the Data Terminal
32. image on OPC drum to the paper 4 4 1 7 Fixer It is comprised of heat lamp heat roller pressure roller thermistor and thermostat It fixes the toner powder transferred to the paper on the paper using pressure and high heat in order to finish the final printing job 4 27 Circuit Description 4 4 2 Developing Process 4 4 2 1 Feeder Engine operates this unit Solenoid rotates the feed roller and feeds one paper Then the paper is fed into the set and hits the actuator of the feed sensor At this point the engine detects the signal and prepares to spray according to the image data If any problem happens to this feed sensor operation the system displays paper jam error on the OP panel Also feed sensor unit is closely related to the paper margin 4 4 2 2 Electrifier This unit electrifies consistent negative voltage to OPC When the high negative voltage 1550V is allowed to charge roller the OPC drum surface will be consistently electrified with approximately 1300V This is the first process in generating the dig ital picture 4 4 2 3 Exposer After receiving bitmap image data from engine board LSU turns the laser diode either on or off depending on whether the dig ital data is present or absent in order to expose the OPC drum with the switched laser beam data The difference between the voltages generated at this point is presented above In other words the part exposed to the laser will have 50V and its rela tiv
33. interval of 75 4 mm When taking out the cartridge toner leaks YES Remove obstacles stuck on OPC drum s surface Bad image removes by scratching NO Toner leaks and toner material dropped onto the paper gt Replace the developer Check toner is stuck onto the P R or H R in fuser gt Clean it or replace YES v The problem occured since the obstacles stuck to charge roller Replace toner cartridge The problem randomly occured due to the toner fallen gt Clean the machine 5 20 Troubleshooting Horizontal Band Black band The black band has regular interval 75 4 mm interval Black band is far about 10mm from white band Problem of internal contacts in OPC gt Replace developer This occurs when no Hsync at LSU Replace LSU Does it appear at every 56 1mm at specific place The OPC is damaged due to the irregular transfer voltage of HVPS Repair replace HVPS gt If the same problem persists replace the developer Heat roller is ruined Replace the roller NO The OPC is damaged under the direct sunlight for around 5 minutes If the same problem persists in 10 hours replace the developer Problems of terminal contact transfer voltage supplying and transfer roller
34. is specified by RAS SIGNAL and CAS SIGNAL DRAMWE SIGNAL is activated when writing data and DRAMOE SIGNAL when reading 4 1 5 Modem and TX and RX Related Circuits MODEM The Conexant FM336 modem is a V 34 half duplex modem that supports Group facsimile send and receive speeds up to 33600 bps using the V 34 half duplex mode Using a V 34 technique to optimize modem configuration for line conditions the modem connects at the optimal selected data rate that the channel can support from 33600 bps to 2400 bps The modem can operate over the public switched telephone network PSTN through a line terminator provided by a Data Access rrangement DAA The modem satisfies the requirements specified inITU T recommendations V 34 V 17 V 29 V 27 ter V 23 V 21 and meets the binary signal ingrequirements of V 8 and T 30 Internal HDLC support eliminates the need for an external serial input output SIO device in the DTE for products incorporating error detection and T 30 protocol The modem can perform HDLC framing per T 30 at all data speeds CRC generation checking along with zero insertion deletion enhances DLC HDLC frame operations An FSK flag pattern detector facilitates FSK detection during high speed reception The modem features a programmable DTMF transmitter receiver and three programmable tone detectors which operate in the tone mode The modem offers lower power consumption and small size to allow the design of compact system enclosures f
35. should remove All covers see page 3 3 3 9 Note When reassembling make sure that the direction of the gear is correct gt eoo 70 2 Release two snap fits and remove the gear pick up ass y from the main frame 3 15 Disassembly and Reassembly 3 26 Solenoid 1 Before you remove the solenoid you should remove All covers see page 3 3 3 9 2 Unplug one connector from the engine board and remove one screw then remove the solenoid 3 27 HVPS board 1 Before you remove the HVPS board you should remove All covers see page 3 3 3 9 2 Remove three screws and one connector from the HVPS board then remove the board Note when reassembling make sure that the terminal is five 3 16 Disassembly and Reassembly 3 28 Hook board 1 Before you remove the hook board you should remove All covers see page 3 3 3 9 2 Unplug one connector from the main board and remove two screws then remove the hook board from the main frame 3 29 Fuser ass y k Before you remove the fuser ass y you should remove 3 Remove two screws and unlatch the fuser ass y using a proper tool All covers see page 3 3 3 9 2 Remove two wires after remove two screws from the main frame and one connector from the inter connec tor
36. 005820003380140200001302090018010000 CSI 2020202020202020202020202020202020202020 DIS 00000000 01110111 00010111 00100010 NSF 61005020003380140200001302090018010000 CSI 2020202020202020202020220202020220202020 DIS 00000000 01110111 00010111 00100010 TSI 2020202020202020202020202020202020202020 DCS 00000000 01100001 00010101 00000000 FTT TSI 2020202020202020202020202020202020202020 DCS 00000000 01100001 00010101 00000000 CFR MPS MCF DCN 5 5 5 5 5 5 R R 5 R R 5 R 5 5 lt SAMPLE OF PROTOCOL DUMP LIST gt 5 7 Troubleshooting 5 3 Diagnostics This section describes methods and procedures to isolate the cause of a malfunction in the machine This machine displays diag nostic information on the LCD In addition it can perform a series of tests that allow the machine to observe individual machine functions 5 3 1 Error Messages Error Message Description Solution the redial attempts DOCUMENT JAM The loaded document has jammed in the feeder Clear the document jam DOOR OPEN The top cover is not securely latched Press down on the cover until it clicks in place FUSER ERROR Unplug the power code and plug it back There occurs a problem in the fuser unit in If the problem still persists please call for service JAM NO CARTRIDGE Recording paper has jammed inside the unit or Clear the jam or install the cartridge the toner cartridge is not installed
37. CRIA1 GOPA 26 CRIBO GOPA 27 Current control line 1 for phase A Current control line O for phase B CRIB1 GOPA 28 Current control line 1 for phase B CHX GIP 8 9 Encode sensor Encode sensor ADDRI2 1 0 Address bus The 22bit address bus ADDR 21 0 covers the full 4M half words address range of each ROM SRAM DRAM and external I O bank DATA 15 0 nRAS 1 0 nCAS 1 0 External bi directional 16 bit data bus Not row address strobe for DRAM The KS32C65100 supports up to two DRAM banks One nRAS output is provided for each bank Not column address strobe for DRAM The two nCAS outputs indicate the byte selections whenever a DRAM bank is accessed Not output enable Whenever a memory access occurs the nOE output controls the output enable port of the specific memory device nWE Not write enable Whenever a memory access occurs the nWE output controls the write enable port of the specific memory device nPHGA 13 1 PHOE 16 1 GIOP 26 11 Gate control line for print head Drain control line for print head 4 4 Circuit Description Signal Pin No I O Type Description RXDO GIP O0 194 T Receive data input for the RXDO is the UARTO channel s input signal for receiving serial data RXD1 GIP 1 192 T Receive data input for the UART1 RXD1 is the UART1 c
38. IT JC72 00532A PMO FRAME LOWER JC72 00533A PMO COVER PTL JC72 00534A PMO CAP PLTE G DEV R JC72 41135A PMO CAP PLTE G DEV L JC72 41173A PMO STOPPER EXIT JC72 41396B RMO RUBBER FOOT JC73 00027A MEC ROLLER FEED JC75 00054A RPR ROLLER FEED JC73 00038A MEC SHAFT FEED JC75 00092A MEC HOLDER FEED JC75 00055A SPRING ACT FEED JC61 00019A PMO HOLDER FEED JC72 00114A PMO BUSHING FEED JC72 00117A PMO ACTUATOR EMPTY JC72 00118A PMO ACTUATOR FEED JC72 00119A MEC HOLDER TR JC75 00106C SPRING TR 300 JC61 00024A IPR PLATE_TR JC70 00029A PMO HOLDER TR JC72 00100A PMO BUSHING TR L JC72 00102A MEC HOLDER TR R JC75 00107C SPRING TR 300 JC61 00024A PMO HOLDER TR JC72 00100A PMO BUSHING TR R JC72 00101A MEC ROLLER PR 1210 JC75 00130A PBA MAIN SENSOR JC92 01197A ELA HOU MOTOR GND JC96 01579A ELA HOU OPEN SENSOR JC96 01584A CBF HARNESS COVER JC39 00041A IPR BRKT SENSOR JC70 00038A ELA HOU PTL ASS Y JC96 02312A ELAHOU FUSER 110V JC81 00439A PMO BUSHING SHAFT JG72 40849A GEAR FU_IN 47 JC66 00306A PMO HUB GEAR JC72 00676A GEAR FU OUT 47 JC66 00307A PMO GEAR 83 35 JC72 00154A IPR BRACKET FUSER DRV JC70 00108A af x of ofa lt fo fof a ff f
39. R_71 28 JC72 00152A PMO GEAR 73 22 JC72 00153A PMO GEAR 132 19 JC72 00158A IPR BRKT MOTOR JC70 00201A IPR BRKT GEAR JC70 00202A CBF HARNESS MOTOR JC39 00144A SCREW MACHINE 6001 000131 gt lt gt lt gt lt gt x gt x gt O O YELLOW 7 Block Diagram T No 1193130 3NOHd XY XL 7 009 1009 JSNVH 13SQNVH lH Vd ON LLY 49985 NN k W3a0N YNY JSNVHI SdAH x 0 8 3010 13105 JNNA YOLOW XM UOS 35 we s Adans 240 AHW 3503 240 3 ii SII 39V3831NI 510 sdq 009 il WAON USAIN YOLON XL 311 AYININ os ow bia ovo il oll n Gs 001990287 pny 1184 dn yoeg 50 INOH IN3O 4O LON 512 XL gt pJe0q NVOS ueog 001 WOOIW 380 YOS NAS 204 7 1 8 Connection Diagram CIS SCAN MOTOR 3 a l H SPKOUT 24V 24V SCNVOT A 5V EE ae SCNVOT B SCNVOT A SCNVOT B GND OPE RXD GND5 CPE TXD CPE RST 6405 5V as sia cls LCD as si 6 START PULSE 8 CIS MAIN CLOCK 7 GND SCAN B D DET 9 8 e nam 2 2 2 LCD 1 24
40. Ready In V 8 and V 34 configuration activating DTR initiates the handshake state The DTR input and the DTR control bit are logically ORed Request to Send active low RTS input allows the modem to transmit data present at TXD resultant control signal HOST INTERFACE Chip Select The active low CS input selects and enables the modem DSP for parallel data transfer between the DSP and the host over the microprocessor bus Write Writing is controlled by the host pulsing WR input low during the microprocessor bus access cycle The write timing is Parameter Symbol Min CS Setup Time TCS 0 RSi Setup Time TRS 10 Control Hold Time THC 10 Write Data Setup Time TWDS 20 Write Data Hold Time TDHW 10 Max Units ns ns ns ns ns A read or write operation following a write operation must be delayed by at least 4 XCLK cycles Read Enable Reading is controlled by the host pulsing RD input low during the microprocessor bus access cycle The read timing is Parameter Symbol Min CS Setup Time TCS 0 RSi Setup Time TRS 10 Data Access Time TDA Data Hold Time TDHR 10 Control Hold Time THC 10 Notes 1 CS and RD must not both be continuously active Max 45 Units ns ns ns ns ns A read or write operation following a read operation must be delayed by at least 2 XCLK cycle 4 15 Circuit Description FM336 Signals Definitions Cont d Signal Name Description Interrupt
41. Request Interrupt request outputs may be connected to the host processor interrupt request input in order to interrupt host program execution for immediate modem service The IRQ output can be enabled in DSP interface memory to indicate immediate change of conditions in the modem The use of IRQ is optional depending upon modem application The IRQ output structure is an open drain field effect transistor FET The IRQ output can be wire ORed with other IRQ lines in the application system Any of these sources can drive the host interrupt input low and the host interrupt servicing process normally continues until all interrupt requests have been serviced all IRQ lines have returned high Because of the open drain structure of IRQ an external pull up resistor to 3 3V is required at some point on the IRQ line The resistor value should be small enough to pull the IRQ line high when all IRQ drivers are off it must overcome the leakage currents The resistor value should be large enough to limit the driver sink current to a level acceptable to each driver If only the modem IRQ output is used a resistor value of 5 6K ohms 20 0 25 W is sufficient Data Lines Eight bi directional data lines 00 07 provide parallel transfer of data between the host and the modem The most significant bit is D7 Data direction is controlled by the Read Enable 0 22 and Write Enable WRITE R W signals During a read cycle data from the DSP interfa
42. TALK In this case TALK active opens the relay to disconnect the handset from the telephone line Relay A Control The OH open collector output can directly drive a 5V reed relay coil with a minimum resistance of 360 ohms 13 9 mA max 5 0V and a must operate voltage no greater than 4 0 VDC A clamp diode such as a 1N4148 should be installed across the relay coil An external transistor can be used to drive heavier loads electro mechanical relays OH is controlled by host setting resetting of the RA bit In a typical application is connected to the normally open Off Hook relay In this case OH active closes the relay to connect the modem to the telephone line Alternatively in a typical application OH is connected to the normally open Caller ID relay CALLID When the modem detects a Calling Number Delivery CND message the OH output is asserted to close the CALLID relay in order to AC couple the CND information to the modem RIN input without closing the off hook relay and allowing loop current flow which would indicate an off hook condition Ring Indicator RI output follows the ringing signal present on the line with a low level 0 V during the ON time and a high level 3 3 V during the OFF time coincident with the ringing signal The RI status bit reflects the state of the RI output DIAGNOSTIC SIGNALS Three signals provide the timing and data necessary to create an oscilloscope quadrature eye pattern T
43. V 2 24VS SENSOR D COVER SW TCH 1 es 5 5 IN 10 co Heat Lamp Fuser TZ MODEM XN 1 113 MODEM TXA2 8 1
44. Voltage Connect to VDD1 RESERVED Reserved pins are used for future development and should not be connected to any circuitry 4 16 Circuit Description 4 1 6 Scanner Part CIS DRIVER INPUT PROCESSOR CIS contacl signal is consist of BLED RLED GLED CIS_CLK CIS SI CIS driver power supply is 5v LED driver power sup ply is 5v also As CIS input signal minc Vref values O MAXC Vref Values is about 1 2V SPECIFICATION Readable width 216mm Number of sensor elements 2552 dots 21 2572 dots available Resolution 75 ms line Scanning speed 7 5 Light source Color LEDs Red 640 mm Green 525mm Blue 470mm Data output 1 analogue Outward dimension WXHXL 18 0 X 12 2 X 231 0 mm attachment PIN FUNCTION DESCRIPTION No Signature Name Description 1 SIG signal output Video output signal 2 GND Ground OV DC reference point 3 VDD Supply voltage 5V DC supply ref to GND 4 GND Ground OV DC reference point 5 GND Ground OV DC reference point 6 SI Start pulse Start pulse 7 GND Ground 0V DC reference point 8 CLK Clock CIS main clock 9 LEDB LED Ground blue LED POWER SUPPLY BLUE 10 LEDG LED Ground green LED POWER SUPPLY GREEN 11 LEDR LED Ground red LED POWER SUPPLY RED 12 VLED Supply voltage LED POWER SUPPLY Circuit Description ELECTRICAL CHARACTERISTICS 25
45. art with this mark You must use regular parts described in specifica tions for the parts inflammable and where the cur rent can be flown Otherwise any hazard such as an electric shock or a fire could occur LASER STATEMENT LASERTURVALLISUUS WARNING NEVER OPERATE AND SERVICE THE PRINTER WITH THE PROTECTIVE COVER REMOVED FROM LASER SCANNER ASSEMBLY THE REFLECTIVE BEAM ALTHOUGH INVISIBLE CAN DAMAGE YOUR EYES Class 1 laser product Luokan 1 laserlaite Klass 1 laser apparat Allonpituus 770 795nm Teho 0 3mW 0 03mWw THIS COVER VORSICHT UNSICHTBARE LASERSTRAHLUNG WENN ABDECKUNG GEOFFNET NIGHT DEM STRAHL AUSSETZEN ATTENTION REYONNEMENT LASER INVISIBLE EN CAS D OUVERTURE EXPOSITION DANGERUSE AU FAISCEAU ATTENZIONE RADIAZIONE LASER INVISIBLE IN CASO DI APERTURA EVITARE L ESPOSIZONE LA FASCIO PRECAUCION REDIACION LASER INVISIBLE CUANDO SE ABRE EVITAR EXPONERSE AL RAYO CAUTION INVISIBLE LASER RADIATION WHEN THIS COVER OPEN DO NOT OPEN CAUTION Avoid exposure to invisible laser radiation when the development unit is not installed 1 2 Precautions on Disassembly and Reassembly Very careful precautions should be taken when replacing parts Before replacing please check cables because you cannot put the cables that you removed for replacing parts into the proper place if you would not make sure of where they were connected and in which condition Please do the following before dis
46. assembling for a repair or replacement of parts 1 Pull out paper cassette printer cartridge installed Especially careful not to be scratched by the surface of developer or not to expose them to light 2 Turn the power switch off 3 Take out the power plug printer cable from the printer 4 Use only the same type of part as original when replacing parts 5 Do not force to open or fasten plastic material compo nents 6 Be careful that small parts such as screws should not get in the printer 7 When disassembling assembling also observe small components are located in place 8 If you uncover and turn the machine over to replace some parts toner or paper particles may contaminate the LSU window Protect the LSU window with clean paper Releasing Plastic Latches Many of parts are held in place with plastic latches The latches break easily release them carefully To remove such parts press the hook end of the latch away from the part to which it is latched 14 Precautions 1 3 ESD Precautions Certain semiconductor devices can be easily damaged by static electricity Such components are commonly called Electrostatically Sensitive ES Devices or ESDs Examples of typical ESDs are integrated circuits some field effect transistors and semiconductor chip components The techniques outlined below should be followed to help reduce the incidence of component damage caused by sta tic el
47. atic dialing the machine automatically redials the number Select the time interval between auto matic redial attempts Enter the desired redial interval using the number keypad 1 15 minutes REDIAL COUNT You can set times that redial automatically attempts when automatic transmission is done or when the remote machine is busy or when the machine send a fax If there is no response after redialing by the times already set redial is no longer attempted No redial is attempted if the settings is 0 Enter the desired times from 1 through 5 DP Make Break Select the dial pulse make and break time 40 60 or 33 67 Caution Send Fax Level is set at the best condition in the ship ment from factory Never change settings arbitrarily SILENCE TIME In ANS FAX mode after a call is picked up by the answer ing machine the machine monitors the line f a period of silence is detected on the line at any time the call will be treated as a fax message and the machine begins receiving Silence detection time is selectable between limited about 12 seconds and unlimited time When 2 sec is selected the machine switches to receiv ing mode as soon as it detects a period of silence When unlimited is selected the machine waits until the answer ing operation is concluded even though a period of silence is detected After the answering operation is concluded the machine switches to receiving mode ERROR RATE When th
48. board includes LSU interface unit and cover open sensing unit that it intercepts 24V voltage to the main motor LSU fan clutch and fixing unit when you open the front cover 4 4 1 4 Developer Using the digital picture process developing unit generates visible images It is comprised of charge roller OPC drum devel oper roller supply roller and toner 4 4 1 5 LSU Laser Scanning Unit This is controlled by engine controller Using laser beam control exposure of OPC drum and the rotational principle of polygon mirror it forms electro static latent image in the OPC drum with the video data received from engine It is the core part of LBP OPC drum synchronizes with the feeding speed of the paper and rotates When the laser beam inside LSU reaches at the end of polygon mirror it generates HSYNC signal and send it to engine Then the engine detects HSYNC signal and adjusts the lengthwise row of the image on the paper After detecting HSYNC and after set time period it sends the video data to LSU to adjust the left margin on the paper The one side of the polygon mirror is the one line scanned 4 4 1 6 Transfer Transcribing unit is comprised of PTL pre transfer lamp and transcribing roller PTL detects the beam of the OPC drum low ers the electric potential of the developing unit and lower the adhesiveness of toner to enhance transcription coefficient And the transcribing roller transfers the toner constituting element of video
49. can position sensor output is received at U2 pin7 Scan Position Sensor RESONATOR 7 37 MHz Document LCD Detect MICOM 1 16x 1Line Sensor HT48C5A EA Key Matri Y 8 y Ur Connector Reset X LEDs OPE BLOCK DIAGRAM 4 23 Circuit Description 4 3 LIU PBA The LIU Line Interface Unit using the discrete method is comprised of the following 1 Tel line Interface Circuit that connects the PSTN exchange and the system Facsimile 2 Telephone circuit composed of dial speech circuit 4 4 1 Tel Line interface Circuit Tel Line Interface is the path that connects the signals between PSTN exchange and the system Facsimile and it is com prised of Tel Line Interface Circuit and Impedance Matching Trans Circuit 1 TEL LINE Interface Circuit 2 TRANS Circuit for IMPEDANCE MATCHING 4 4 2 Telephone Circuit Ringer Dial Speech Circuit etc The telephone circuit is comprised of ring detect circuit dialer circuit speech circuit external hook detect circuit and recall cir cuit 1 Ring Detect Circuit 2 Dialling Circuit including MF Dialling Signal Transmitting Circuit 3 Speech Circuit 4 External Hook Detect Circuit 5 Recall Circuit 4 24 Circuit Description 4 4 3 Detailed Spec TEL LINE INTERFACE CIRCUIT 1 TEL LINE INTERFACE CIRCUIT t is an interface that physically connects facsimile to the PSTN public switching tele
50. ce memory register is gated onto the data bus via three state drivers in the DSP These drivers force the data lines high for a one bit or low for a zero bit When not read the three state drivers assume their high impedance off state During a write cycle data from the data bus is copied into the selected DSP interface memory register with high and low bus levels representing one and zero bit states respectively RSO RS4 Register Select Lines Five active high Register Select inputs RS0 RS4 address interface memory registers within the DSP when CS is low These lines are typically connected to address lines 4 When selected by CS low the DSP decodes RSO through RS4 to address one of 32 8 bit internal interface memory registers 00 1F The most significant address bit is RS4 while the least significant address bit is RSO The selected register can be read from or written into via the 8 bit parallel data bus DO D7 OVERHEAD SIGNALS PWR 3 3V Supply Voltage for DSP Digital Circuits Label Signal Name Description XTALI CLKIN Crystal In Clock In Connect to an external 28 224 MHz crystal circuit or an external 28 224 MHz oscillator circuit Label Crystal Oscillator XTALI CLKIN XTALI CLKIN XTALO NC Crystal OuUNC Connect to the external crystal circuit return or leave open Label Crystal Oscillator XTALO NC XTALO NC PLL VDD PLL Supply Voltage PLL GND PLL Supply Voltage return VCORE 3 3V Supply
51. e same problem even right after passed through the transfer roller YES Y The ribs in fuser or toner on the roller may invoke the image problem gt Replace the fuser cover or the defective part The image is originally black or the black part is far close to the top gt Use the pattern which has the image below bigger than 10mm from the top Dirt of dust stuck onto the window of internal lens of LSU gt Clean it or replace LSU Preventive obstacles through the path between OPC of developer and LSU prevent the path gt Remove the obstacles Does the problem END persist Toner material might be stuck to blade in the developer inside and it prevents toner supply gt Replace the toner cartridge Check both if the toner cartridge s counter is over its guaranty and amount of the toner material gt Replace the toner cartridge 5 16 Troubleshooting Dark Image Dark selected via RCP Change to Normal and test NO Same at Normal Works cor NO END with 350V of Bias voltage YES Works NO Repair or replace the defective component correctly after replaced LSU YES The power of LSU is set high or internal problem gt Replace LSU or adjust voluem Toner over supply due to the adjustment fault of metering blade in d
52. e electric potential will increase and form electrostatic latent image The part unexposed to the laser as it did not have the video data will consistently retain 800V Eventually the image will form in the part electrified and rose to 50V forms black dot and the part retaining 800V will be white in order to make the basic condition to form the video data 4 28 Circuit Description DEVELOPER BLOCK DIAGRAM Engine Operating Descriptions metering blade GND OVERALL OPERATING STRUCTURE OF THE SYSTEM HOST COMPUTER VIDEO CONTROLLER ENGINE CONTROLLER HSYNC DEVELOPER A PATH A EXIT FEED SENSOR SENSOR FACE UP 4 29 Circuit Description LSU 2 Charging 4 Development 7 Fixing om 1 Feeding A A EXIT PTL FEED SENSOR SENSOR 5 Pre Transfer Engine Operating Description gt 4 4 2 4 Developer Unit On the surface where OPC drum and developer roller rotate in opposite direction meet the toner that has negative electric characteristic moves to the exposed part 50V due to the electric potential difference but it will not move to the unexposed part 800V 4 4 2 5 Transfer Unit GND Toner on the OPC drum is transferred to paper by transfer unit In other words the toner on the OPC drum surface is induct ed by the transfer roller electrified to approximat
53. e error rate is about to be over the setting value the Baud rate automatically lowers up to 2400 bps to make the error rate remain below the setting value You can select the rate between 5 and 10 IGNORE TONER EMP You can set this function ON if desiring to drive the engine continuously even though the life of toner is run out and it becomes Toner Empty status 5 3 Troubleshooting 5 2 3 Maintenance Options In TECH mode press SETUP then press 4 or until MAINTENANCE appears in the display Press Start Enter The following technical options are available CLEAN DRUM Use this feature to get rid of the toner remained in the development unit so you can get a clean printout Perform this feature if stains or specks appear on the printing mate rials and print quality falls Perform this feature several times until a clean printing material appears ADJUST SHADING Use this feature to correct the white reference of the scan ner if you experience bad copy images When using this feature a white paper should be used to get clean copy images Use this adjustment feature to achieve best image scan quality depending on the characteristics of the CIS Contact Image Sensor parts 1 Select ADJUST SHADING from the Service Mode 2 Insert a clean white original Letter Size into the paper loading part 3 Original is scanned if pressing the Setting button 4 If the original scan is completed
54. e machine s DRAM The result appears in the LCD display SWITCH TEST Use this feature to test all keys on the operation control panel The result is displayed on the LCD window each time you press a key MODEM TEST Use this feature to hear various transmission signals to the telephone line from the modem and to check the modem If no transmission signal sound is heard it means that the modem part of the main board is poor DTMF TEST DTMF Dual Tone Multi Frequency signal When you press any key on the number keypad including and you will hear the corresponding key tone TONER COUNT This feature shows the current state of the toner cartridge TONER ONT The total number of the dots used to print up to current time CRU STATE The page number which the toner cartridge can print Caution After replacing Main board to new one you should update the information to the new board 5 4 Troubleshooting PRINTING INFO This feature allows the machine to automatically print vari ous information like toner count transfer voltage fusing temperature and so on at the bottom of each printed page PAGE TONER prints the number of dots used to print the page TOTAL TONER ONT prints the total number of the dots used to print up to current time THV ON DUTY prints ADC value of transfer voltage THERMISTER prints ADC value of fusing temperature P prints the page number
55. e transmitted without loss Therefore communication standards specifies the AC impedance of the computer and it implies the return loss The com munication standards of each country considering the characteristic of their lines requires 6000 or the return loss of 14dB and higher against the AC impedance of Complex and the AC signals of 300Hz 400Hz The AC impedance of transformer changes depending on the load resistance the core material coil inductance and resistance but generally its character istic against load resistance is considered K1 ARS2 to FAX tio s ARS1 2 RING ARS3 V FG TEL LINE INTERFACE CIRCUIT 4 25 Circuit Description RINGER DIAL CIRCUIT 1 Ringer Circuit The ring detect circuit detects the ring signal by sending the bell signal sent from PSTN to the primary photo coupler PC814 At this point C 1uF 250V is used to match the ring impedance and R is coupled directly in order to prevent any damage to the photo coupler due to ring voltage 2 Dialing Circuit Dialing circuit is initiated only when the power is on and it is transmitted to line through the modem of main part T2 trans 3 External Hook Detect Circuit In the discrete LIU method the external hook detect circuit is designed to use both the photo coupler and current detec tor in order to be used in all countries including the countries with low series resistance Germany Switzerland Belgium Austria
56. ective material to the chassis or circuit assembly into which the device will be installed Maintain continuous electrical contact between the ESD and the assembly into which it will be installed until com pletely plugged or soldered into the circuit Minimize bodily motions when handling unpackaged replacement ESDs Normal motions such as the brush ing together of clothing fabric and lifting one s foot from a carpeted floor can generate static electricity sufficient to damage an ESD Precautions 1 4 Tools for Troubleshooting The following tools are recommended for safe and smooth troubleshooting described in this service manual DVM Digital Volt Meter Pinset Standard Indicates more than 3 digits Standard For general home use small type gt Cotton Swab Standard For general home use for medical ser vice Electronic Scale Cleaning Equipments IPA Isopropyl Standard Equipment to check the weight of con Alcohol dry cloth or a soft stuff neutral sumables toner cartridge The gram unit can detergent be measured Driver Software Driver installation CD ROM Standard type type M3 long M3 short M2 long M2 short Mind your hands not to be touched when you disassemble and reassemble PBA ASS Y Note such as the main board SMPS HVPS 2 Specifications ITEMS DESCRIPTION REMARKS General Size W D H 331 X 355
57. ectricity CAUTION Be sure no power is applied to the chassis or cir cuit and observe all other safety precautions 1 Immediately before handling a semiconductor compo nent or semiconductor equipped assembly drain off any electrostatic charge on your body by touching a known earth ground Alternatively employ a commercially avail able wrist strap device which should be removed for your personal safety reasons prior to applying power to the unit under test 2 After removing an electrical assembly equipped with ESDs place the assembly on a conductive surface such as aluminum or copper foil or conductive foam to pre vent electrostatic charge buildup in the vicinity of the assembly 3 Use only a grounded tip soldering iron to solder or desol der ESDs Use only an anti static solder removal device Some sol der removal devices not classified as anti static can generate electrical charges sufficient to damage ESDs Do not use Freon propelled chemicals When sprayed these can generate electrical charges sufficient to dam age ESDs Do not remove a replacement ESD from its protective packaging until immediately before installing it Most replacement ESDs are packaged with all leads shorted together by conductive foam aluminum foil or a compa rable conductive material Immediately before removing the protective shorting material from the leads of a replacement ESD touch the prot
58. ely 1 3KV 600 2800V variable to the paper At this point the voltage 600 2800V variable is determined by temperature and humidity The above process is called transfer 4 30 Circuit Description Thermistor Heat Lamp Heat Roller Toner Pressure Spring Roller 4 4 2 6 Anchorage unit The toner transferred on to the paper is at the electronically low state and it can be easily scattered Considering this fact we used heat 180 C and pressure 4kg to fix the toner on the paper permanently Then the image formed will remain on the paper permanently Heat roller transfers the heat from the heat lamp inside to the paper The surface of the heat roller specially coated with Teflon repels toner melted by the heat from the surface The pressure roller on the bottom of the heat roller is made of silicon resin and its surface is also coated with Teflon The ther mistor of the fixer unit detects the surface temperature of the heat roller and feeds this information back in order to retain 180 C while printing and 135 C while on standby The thermostat is used as the secondary safety device and it prevents overheat by shutting the main power when the heat lamp is overheated 4 4 2 7 Exit After the digital picture process is finished the printed paper will come out of the set through the exit sensor The signal detect ed will be transferred to the engine and provide the position information If the actuator and the s
59. em be sure that the Rubber ADF and Holder Rubber fit into the guide boss and the Holder Rubber latches fit into the corresponding hole Then push firmly until it clicks 3 Clean the surface of the rubber pad with IPA Isopropyl Alcohol After wiping it be sure to dry it Check the rub ber wear If the wear reaches 1 2 its original thickness replace it with a new one 3 5 Disassembly and Reassembly 3 6 OPE Board Before you remove the OPE board you should remove OPE cover see page 3 3 2 Remove four screws securing the OPE board 3 7 Lever sensor Doc 1 Unlatch the lever sensor Doc from the scan upper frame and take it out 3 8 Lever sensor Scan 1 Push the both sides of Lever sensor Scan inward then unlatch and take out the sensor Scan from the scan upper frame 3 6 3 Release two latches securing the both side of the LCD and the two of four latches securing the board Then remove the OPE board Disassembly and Reassembly 3 9 Scan board 1 Before you remove Scan board you should remove Bracket scam board see page 3 3 2 Unplug all the connectors from the scan board and remove the board 3 10 Scan Motor 1 Before you disassemble Scan motor you should 4 Take out the gear from the motor ass y remove OPE cover see page 3 3 Bracket scan board see page 3 3 5 Remove two screws and remove the motor 2 Unplug one connector fr
60. ensor do not work normally the system will display Paper Jam 2 Error 4 81 Circuit Description BIAS OUTPUT UNIT BLOCK DIAGRAM MHV PWM SUPPLY EA REGULATION OUTPUT SWITCHING CIRCUIT CIRCUIT CONTROL UNIT SWITCHING CONTROL UNIT SWITCHING CONTROL UNIT TRANSFER OUTPUT UNIT BLOCK DIAGRAM THVPWM THVEA THVREAD PWM CONTROL UNIT SWITCHING REGULATION CONTROL UNIT TRANS CIRCUIT FEEDBACK SWITCHING REGULATION CONTROL UNIT TRANS CIRCUIT THV FEED BACK ENVIRONMENT RECOGNITION CIRCUIT THV 4 32 Circuit Description 4 4 2 8 MHV Electrification Output Enable Electrification Output Enable is the electrification output control signal PWM LOW ACTIVE When MHV PWM LOW signal is received Q401 turns on and the steady voltage will be accepted to the non inverting termi nal of OP AMP 324 As the voltage higher than the inverting reference voltage of OP AMP which is set to R405 and R406 OP AMP output turns high This output sends IB to the TRANS auxiliary wire through current restricting resistance Q402 via R408 and C403 and Q402 turns on When the current is accepted to Q402 Ic increases to the current proportional to time through the T401 primary coil and when it reaches the Hfe limit of 0402 it will not retain the on state but will turn to off As Q402 turns off TRANS 1 will have counter electromotive force discharge energy to the secondary un
61. eo data input from RET VCLK GIP 14 129 I2 External video clock nEXTWAIT GIP 7 130 13 External wait RTCXIN 202 17 RTC oscillator clock input RTCXOUT 203 O7 RTC oscillator clock output SLED 2 0 196 198 O1 CIS LED signals GOPA 18 16 GAVRT 205 15 Top reference voltage for general ADC GAIN 2 0 206 208 15 Analog inputs for general ADC RTC_VDD 201 RTC VDD 4 6 Circuit Description Signal Pin No Type Description VDD_PLL 186 PLL power 3 3V SAVDD 1 Analog power for scan ADC and general ADC 3 3V SAVSS 5 Scan ADC ground GAVSS 204 General ADC ground 15 30 81 3 3V internal power 3VDD 115 131 160 Externally connected to the 3 3V regulator 5V I O 5VDD 48 67 89 power 141 195 Externally connected to the VCC board plane 11 25 39 58 76 101 System ground VSS 108 124 150 172 Externally connected to the ground board plane 181 4 7 Circuit Description 4 1 3 PROGRAM ROM FLASH MEMORY 1 DEVICE TYPE No AM29F800B CAPACITY 2 Mbit 512K 16bit 2 2 PROGRAMMING BEFORE ASS Y EPROM PROGRAMMER or PROGRAMMING at the factory AFTER ASS Y DOWNLOAD from PC 4 1 4 DRAM CONTROL 1 DEVICE TYPE NO K4E641611D TC50 EDO Type CAPACITY 64 Mbit 4M 16bit 2 OPERATING PRINCIPLE DRAM can either read or write The data can be stored in the DRAM only when the power is on It stores data white the CPU processes data The address to read and write the data
62. eveloper gt Replace developer 5 17 Troubleshooting Background Replace transfer roller s holder Recommended paper used Print 20 to 30 pages using the recommended paper Is pressure of storage atmosphere is too high temperature humidity transfer roller too high Does the operation of END TR work properly Transfer N Adjust voltage or replace HVPS 7 Repair or replace after checking the 9 terminals contacts Operating Dirt or dust around the Replace the charge roller YES toner cartridge Solve the problem under Clean the charge roller the recommended condition or replace step up device 10 32 degree Centigrade terminal after check are misplaced gt Repair or replace transfer roller etc Check Terminals or contacts and Guide Deve Spring NO YES Internal blade or suppying part of the developer is defective gt Replace the toner cartridge 5 18 Troubleshooting Ghost Is it regular ls it regular interval of 31 6mm ls it regular interval of 75 4mm 50 4 mm NO Transfer Developing voltage is set to Isuppying voltage standard normal 350V 550V Clean transfer roller s holder and TR drive gearor replace TR holder as
63. ex value read by CPU the transfer voltage output will differ according to the preset transfer table The changes in transfer output required by each load is controlled by PWM DUT Y 4 36 5 Troubleshooting 5 1 Preventative Maintenance The cycle period outlined below is a general guideline for maintenance The example list is for an average usage of 50 trans mitted and received documents per day Environmental conditions and actual use will vary these factors The cycle period given below is for reference only Transfer Roller 60 000 Pages COMPONENT CLEANING CYCLE REPLACEMENT CYCLE SOLUTION ADF Rubber 6 Months 10 000 Pages SCANNER ADF Roller 1 Year 20 000 Pages White Roller As Needed 10 000 Pages CIS As Needed Cartridge 2 500 Pages Pickup Roller 60 000 Pages Feed Roller 50 000 Pages PRINTER Fuser 50 000 Pages 5 2 Tech Mode In Tech mode the technician can perform various tests to isolate the causes of a malfunction and set the technical option fea tures to customize the machine depending on the user s operation environment To access TECH mode Press SETUP 1 9 3 4 in sequence and the LCD displays TECH the standby mode screen While in TECH mode the machine still performs all normal operations To return to the normal user mode Turn the power off then back on The technical options you have set in TECH mode are not changed unless you
64. ff J J po Jp J J p a a FAN DC J3103 001085 SCREW TAPTITE 6003 000152 SCREW TAPTITE 6003 000196 SCREW TAPTITE 6003 000119 gt x gt lt x lo AS gt lt x x x x JO x O O lt gt lt gt lt O x gt lt gt lt lt O O O x gt lt x x gt lt x O gt lt lt lt gt x gt x gt O gt lt gt lt x gt gt x x gt lt gt lt gt x x gt lt gt x x gt O s 6 9 Exploded View and Parts List 6 5 Fuser Assembly 6 10 Exploded View and Parts List Fuser Assembly Parts List Description SEC Code 4 Service available X Service not available D 9o gt ELA HOU FUSER 110V JC81 00439A THERMISTOR NTC J1404 001188 THERMOSTAT J4712 000001 LAMP HALOGEN J4713 001120 PMO FUSER UPPER JC72 00129A PMO BUSHING H R L JC72 00530A PMO BUSHING H R R JC72 00529A PMO COVER THERMOSTAT JC72 00133A OI CO N NPR ROLLER HEAT JC71 00012B IPR ELECTRODE_PLATE JC70 00043A IPR GROUND FU JC70 00044A IPR PIN ROLLER EXIT JC70 00064A IPR ELECTRODE WIRE1 JC70 00066A IPR ELECTRODE WIRE S JC70 00065A MEA ETC SHAFT EXIT JC97 01306A PMO SHAFT EXIT Z15 JC72 00150A RMO RUBBER EXIT JC73 00017A
65. hannel s input signal for receiving serial data RXD2 GIP 2 190 T data input for the UART2 RXD2 is the UART2 channel s input signal for receiving serial data nEINTO GIP 3 8 I3 External interrupt request input nEINTO nEINT1 GIP 4 9 I3 External interrupt request input nEINT1 nEINT2 GIP 5 10 I3 External interrupt request input nEINT2 nXDREQ GIP 6 199 13 External DMA request TXDO GOPA O 193 O1 Transmit data output for the TXDO is the UARTO channel s output for transmitting serial data TXD1 GOPA 1 191 O1 Transmit data output for the UART1 TXD1 is the UART1 channel s output for transmitting serial data TXD2 GOPA 2 189 O1 Transmit data output for the UART2 TXD2 is the UART2 channel s output for transmitting serial data nXDACK GOPAI5 200 O1 External DMA acknowledge This active low output signal is generated whenever a DMA transfer is completed TONEOUT GOPA 3 188 O1 Tone generator output nWDTO GOPA 4 187 P3 Reset out by watch dog timer nlOWR GOPA 10 161 O1 External output write strobe nlORD GOPA 9 162 O1 External output read strobe CLKOUT GOPA 6 180 O1 Clock for external chip nECS2 GOPA 8 14 O1 External memory chip select 2 TCK 132 12 JTAG TCK interface in MDS mode TMS 135 12 JTAG TMS interface in MDS mode TDI 133 12 JTAG TDI interface in MDS mode nTRST 136 12 JTAG nTRST interface in MDS mode TDO 134 O1 JTAG TDO interface in MDS mode 137 140 GIOP 10 0 173 179 1 04 General
66. he eye pattern is a display of received baseband constellation By observing this constellation common line disturbances can usually be identified Serial Eye Pattern X Y Output EYEXY is a serial output containing two 11 bit diagnostic words EYEX and EYEY for display on the oscilloscope X axis EYEX and Y axis EYEY EYEX is the first word clocked out EYEY follows Each word has 8 bits of significance EYEXY is clocked by the rising edge of EYECLK This serial digital data must be converted to parallel digital form by a serial to parallel converter and then to analog form by two digital to analog D A converters Serial Eye Pattern Clock EYECLK is a 336 kHz output clock for use by the serial to parallel converters The low to high transitions of RDCLK coincide with the low to high transitions of EYECLK EYECLK therefore can be used as a receiver multiplexer clock EYESYNC Serial Eye Pattern Strobe EYESYNC is a strobe for loading the D A converters O DF SPEAKER INTERFACE Speaker Analog Output The SPKR output reflects the received analog input signal The SPKR on off and three levels of attenuation are controlled by bits in DSP RAM When the speaker is turned off the SPKR output is clamped to the voltage at the VC pin The SPKR output can drive an impedance as low as 300 ohms In a typical application the SPKR output is an input to an external LM386 audio power amplifier 4 13 Circuit Description FM336 Signals Defini
67. it sends current to the load and outputs MHV volt age through the high voltage output enable which is comprised of Regulation circuit T401 MHV OUTPUT C404 471 R405 220K U2 7407 R416 15M MHV PWM Q401 A708 R417 R408 15M 47K R409 4 33 Circuit Description 4 4 2 9 BIAS supply dev output unit BIAS voltage output is generated only when electrification voltage is set to output In the circuit presented above it organizes enough zener diodes required to output dev supply voltage from electrification output Supply voltage is output when the supply ea signal is L When supply ea is L Q104 turns off and as Q105 does not turn on the electric potential of the output unit retains the electric potential of zener and thus 500V is output as the supply voltage In case supply ea signal is H both 0104 and Q105 will turn on and the electric potential of the output unit will not retain the electric potential of zener and become GND level and thus the output voltage will become The output condition of developer voltage is the same as that of the supply voltage T401 24VS C404 MHV 3K 471 OUTPUT 18V lt V D402 C406 471 0402 U2 7407 R405 220K Baie MHV PWM 0401 A708 218 D526 aa i R411 2 21 2 y T 417 R403 130K R408 R409 jay 47K 390 KA324 C403 333 R412 2K R114 33K RIS 0107 1413 118 DEV 24 8 10K 8 33K OUTPUT VIL
68. it Description FM336 Signals Definitions Label VO Type Signal Name Description TELEPHONE LINE INTERFACE AUXILIARY TXA1 TXA2 O DD Transmit Analog 1 and 2 The TXA1 and TXA2 outputs are differential outputs 180 degrees out of phase with each other Each output can drive a 300 load Receive Analog RIN is a single ended receive data input from the telephone line interface or an optional external hybrid circuit Ring Detect The RINGD input is monitored for pulses in the range of 15 Hz to 68 Hz The frequency detection range may be changed by the host in DSP RAM The circuit driving RINGD should be a 4N35 optoisolator or equivalent The circuit driving RINGD should not respond to momentary bursts of ringing less than 125 ms in duration or less than 40 VRMS 15 Hz to 68 Hz across TIP and RING Detected ring signals are reflected on the RI output signal as well as the RI bit RINGD IA ITALK O DD E Relay B Control The TALK open collector output can directly drive a 5V reed relay coil with a minimum resistance of 360 ohms 13 9 mA max 5 0V and a must operate voltage no greater than 4 0 VDC A clamp diode such as a 1N4148 should be installed across the relay coil An external transistor can be used to drive heavier loads electro mechanical relays TALK is controlled by host setting resetting of the RB bit In a typical application TALK is connected to the normally closed Talk Data relay
69. ity No Roller Abnormal image period Kind of abnormal image 1 OPC Drum 75 4mm White spot on black image Black spot 2 Charge Roller 37 7mm Black spot 3 Supply Roller 26 8mm Horizontal density band 4 Develope Roller 31 6mm Horizontal density band 5 Transfer Roller 47 1mm Black side contamination transfer fault 6 Heat Roller 50 1mm Black spot White spot 7 Pressure Roller 50 2mm Black side contamination 5 5 Note for replacing Main board When you replace the main board to new one the informa tion on the toner state is cleared Therefore you should update the information to the new board by entering the exact value of total toner count and specifying the toner car tridge installed currently is shipped with the machine or new If not TONER LOW EMPTY message may not appear when the toner is run out 1 In Tech mode print SYSTEM DATA LIST The list 2 Replace Main board 3 In Tech mode 3 1 Press Setup and find MAINTENANCE by pressing repeatedly lt a or then press Start Enter 3 2 When TONER COUNT is displayed in LCD press includes the total toner count and CRU state information Start Enter and enter the value of the total toner count in the system data list 3 3 When you are prompted to enter CRU STATE press Start Enter 3 4 When you see 1 1000 2 2300 in LCD select the TOTAL TONER COUNT The total number of the dots used to print up
70. mark ELA HOU ENGINE ASS Y JC96 02086A MEC CAM PICK UP JC75 00072A PMO CAM PICKUP JC72 00107A PMO SHAFT PICKUP JC72 00108A CBF HARNESS EARTH TX MOTOR JB39 00017A SOLENOID APOLLO JC33 00002A CBF HARNESS MO_SOL JC39 40584A SMPS HVPS JC44 00017A SPRING CLUTCH JC61 00012A SPRING KNOCK UP JC61 00023A PBA MAIN HOOK 2 JC92 01378A PBA MAIN ENGINE JC92 01320A PMO GEAR FEED JC72 00115A PMO CLUTCH FEED JC72 00116A PMO CAP PAD JC72 00124A MEA RACK TR ASS Y JC97 01321A PPR SPACER DR JC72 00288A MEC TRANSFER ROLLER JC75 00035A PMO GEAR TRANSFER JC72 00179A PCT INSULATOR ENG BD JC72 00400A PMO DUMMY SIDE JC72 00624A MEC HOLDER PAD JC75 00156A SPRING PAD JC61 00054A PMO HOLDER PAD JC72 00535A PMO HOLDER PAD LARGE JC72 00536A RPR PAD FRICTION JC73 00062A MEC TERMINAL JC75 00049A MEC SIDE PAD L JC75 00050B MEC SIDE PAD R JC75 00051B MEC KNOCKUP ASS Y JC75 00053A IPR BAR_KNOCKUP JC70 00042A PMO PLATE KNOCKUP JC72 00121A PMO CAM KNOCKUP JC72 00122A MEC GEAR PICK UP JC75 00056A SPRING PICK UP GEAR JC61 00020A PMO GEAR_PICKUP 1 JC72 00104A PMO GEAR_PICKUP 2 JC72 00106A SCREW TAPTITE 6003 000196 SCREW TAPTITE 6003 000266
71. message is displayed on the LCD window and CIS SHADING PROFILE is output If the output image is different from the normal screen the CIS is poor Caution 1 Always perform the CIS TEST after downloading Firmware Otherwise the system may not operate prop erly 2 Always perform ADJUST SHADING after replacing the CIS 3 Always use a clean white paper in ADJUST SHADING Maximum paper width Letter Size 4 ADJUST SHADING may be performed even in the User Mode but ADJUST SHADING profile is output only in the TECH MODE REMOTE TEST The Remote Test feature can be enabled in order to allow a remote location to call up and run a diagnostic test on your machine You may be instructed by a service repre sentative to enable this feature NOTIFY TONER LOW With this feature enabled when the toner becomes low the toner low information will be sent to ta specified contact point for example the service company After you access this menu select ON and when the LCD prompts enter the name and the number of the contact point the cus tomer s fax number the model name and the serial num ber ROM TEST Use this feature to test the machine S ROM The result and the software version appear in the LCD display CIS TEST This test checks the operation of the Contact Image Sensor CIS Each time the number changes by one increment the average ADC value of CIS prints out DRAM TEST Use this feature to test th
72. n Compression MH MR MMR Rcv Mode TEL FAX AUTO ANS FAX ECM Yes DRPD Yes Resolution Std 203 98dpi Fine 203 196dpi S Fine 203 392 Memory Capacity 2MB 160 pages Optional Memory No Functions Voice Request Yes Yes RTI Yes Polling Yes Flash Yes Auto Reduction Yes Broadcasting 119 Locations Forced Memory Yes Delay TX 10 Commands Memory RX Yes RDC Yes Battery B U Yes Max 30 Min 2 2 Specifications ITEMS DESCRIPTION REMARKS Paper ASF Type BIN Handling Input Capacity 150 Sheets 2016 Optional Cassette No Output Capacity 100 Sheets 2016 Output Control Face up Bypass Yes single page Media Type Plain Coated Transparency Envelop Card Post Card Label Media Size Paper 4 Letter Legal Folio Executive B5 A5 Envelop Manual feeding only Envelop 6 3 4 7 3 4 9 10 DL C5 B5 Baronial Media Weight 16 43 Ib Bypass ADF Input Capacity 30 Sheets 20 Ib Media Weight 12 69 Ib Software Driver Printer GDI TWAIN Yes PC FAX No Media CD ROM Yes Diskette No Compatibility Win 95 98 ME NT 2000 XP Y2K Compliant Yes Toner Life Initial 1 500 Pages Using 4 Coverage Pattern Cartridge Running 3 000 Pages Using 4 Coverage Pattern Toner Sensor Support Yes Metthod Software Dot Counting Maintena ADF Rubber 10K Pages Scan nce Paper Feeding Rolle 50K Pages Printr Tran
73. n to off time is 40 x 5 ms for V 17 V 33 35 x 5 ms for V 29 or 11 6 x 5 ms for V 27 ter The RLSD on to off time ensures that all valid data bits have appeared on RXD The RLSD programmable threshold levels default to 43 dBm for off to on and to 48 dBm for on to off A minimum hysteresis of 2 dBm exists between the actual off to on and on to off transition levels The threshold level and hysteresis are measured with an unmodulated 2100 Hz tone applied to the Receiver Analog RXA input Note Performance may be degraded when the received signal level is less than 43 dBm TDCLK Data Clock The modem outputs a synchronous Data Clock DCLK for USRT timing The DCLK frequency is the data rate 40 01 with a duty cycle of 50 1 The DCLK low to high transitions coincide with the center of the data bits Transmit Data TXD must be stable during the one microsecond period immediately preceding the rising edge of DCLK and following the rising edge of DCLK TXD Transmit Data The modem obtains serial data to be transmitted from the local DTE on the Transmit Data TXD input in serial data mode TPDM bit 0 or from the interface memory Transmit Data Register TBUFFER in parallel data mode TPDM bit 1 4 14 FM336 Signals Definitions Cont d Signal Name Description Circuit Description Clear To Send CTS active indicates to the local DTE that the modem will transmit any data present on TXD CTS response times
74. ngine test mode is used to check the operation of the components related to the printer engine The following test are available To access the Engine Test Mode 1 Press Setup 1 9 3 1 in sequence 2 When ENGINE TEST appears press Start Enter 3 Scroll the options by pressing a orp repeatedly find the one you want Press Start Enter to start the test 5 Press Stop to exit the Engine test mode A Caution When you finish operating in Engine Test Mode you must turn the power Off On SCHEDULE INFORM This list shows a specific information on the documents currently stored for delayed transmission It provides the operation number starting time type of operation etc SYSTEM DATA This list provides a list of the user system data settings and tech mode settings PROTOCOL LIST This list shows the sequence of the CCITT group 3 T 30 protocol during the most recent sending or receiving oper ation Use this list to check for send and receive errors If a communication error occurs while the machine is in TECH mode the protocol list will print automatically PATTERN PRINT Using this pattern printout you can check if the printer mechanism is functioning properly Examine the pattern and look for a break in the diagonal line If the diagonal lines are not broken the printer mechanism is functioning properly SHADING PRIN With this print you can check the scanning elements of the CIS C
75. nnectors then remove the SMPS board from the main frame 3 20 Disassembly and Reassembly 3 36 Speaker 1 Before you remove the speaker you should remove Rear cover see page 3 9 Shield Engine ass y see page 3 19 SMPS board see above 2 Remove one connector that connects the speaker to the main board and two screws securing the speaker then remove the speaker 3 37 LIU board 1 Before you remove the LIU board you should remove Rear cover see page 3 9 Shield Engine ass y see page 3 19 2 Remove three screws and three connectors from the LIU board then remove the board from the main frame 3 21 Disassembly and Reassembly 3 38 Main board 1 Before you remove the main board you should remove Rear cover see page 3 9 Shield Engine ass y see page 3 19 2 Remove four screws and all the connectors 9 from the main board then remove the board 3 39 Sensor board 1 Before you remove the sensor board you should remove Rear cover see page 3 9 Shield Engine ass y see page 3 19 2 Release four snap fits securing the sensor board and unplug one connector from the main board then remove the sensor board 3 22
76. oard which detects top cover open or switch error gt Replace the board or switch 5 29 Troubleshooting Fuser Error Measure the resistance at the both ends of AC Line with covers open Less than 10W NO Thermostat is open due to the heat etc gt Replace the thermostat Remove the covers AC is being supplied The voltage of pin 208 of U5 CPU on the Main board is about 2 3V when printing YES END Re assemble the top cover and close it Check the PCI and fusing control part and CN502 on the SMPS gt Replace the component or replace the SMPS Thermistor connecting point or engine board defect gt Repair replace the component board 5 30 Troubleshooting Paper Jam Mis feeding Sounds the solenoid on when starts print Does the paper move sensor and paper width detect sensor are assembled reverse Switch them NO The Engine board defected NO gt Replace boards The solenoid defected gt Replace it The pick up unit is assembled wrong gt Re assemble or replace the unit Too many papers in the feeder YES The Sensor board defected gt Repair replace Reduce the amount and re test Paper guides fit the pape
77. ollows gt 5 8 gt J A 4 ES jc 1 EIPLL amp Clock CPU 4 s s Save ARM7TDMI Scan Image amp 4 lt LBUS Scan Motor 4 Bus gt Controller 7 777777 12 pe 1 I D Cache Ink Head 4 I P Interrupt Controller 47 7 0041 gt Controller 2 KB 4 Y v Oren d A D 4 gt __ Converter Controller lt gt gt p Derasterizer AAA Parallel Pot if i P Carrier Motor Interface gt gt Control ka oir aa gt PE Video Data r I gt Position amp Controller 4 gt Fire Control E UART Paper Motor Serial 1 Se eee E S 2 loses t Control Lsu M gt Real Time Control p S rer canes es REN e jd Clock gt Watch Do PWM amp 4 m ums eei Gen Timer 2 eae Timer Y v System Manager System Bus Controller Bus Arbitration Bus Interface ROM SRAM DRAM Controller
78. om the scan board 3 Remove three screws then remove the motor 55 from the main frame 3 7 Disassembly and Reassembly 3 11 ADF roller Before you remove the ADF roller you should 3 Remove ADF roller from the scan front frame remove OPE cover see page 3 3 Remove two screws securing the guide paper and remove the guide paper 3 12 CIS 1 Remove one screw and push CIS as shown below 2 Separate the Dummy CIS from CIS and lift it 3 8 Disassembly and Reassembly 3 13 Rear cover 1 Remove two screws 2 Push the metal clip on the parallel port down and remove the rear cover from the main frame 3 14 Top cover 1 Before you remove the ADF roller you should 3 Remove two screws and slide the left and right paper guides fully inward Then spread the bottom of the top cover and lift the cover to remove remove OPE cover see page 3 3 Rear cover see above aper guides 2 Remove two screws securing the top cover from the back side of the machine 3 9 Disassembly and Reassembly 3 15 Tray 1 Before you remove the tray you should remove OPE cover see page 3 3 Rear cover see page 3 9 Top cover see page 3 9 o E o gt 5 A 48 3 16 LSU 3 Unplug two connectors from the LSU and remove the 1 Before you remove the LSU you should remove
79. ontact Image Sensor Engine Test Mode Options MAIN MOTOR TEST PTL TEST FAN TEST FUSER TEST FUSER ON 145 C FUSER OFF 145 C 1 LSU MOTOR TEST LD LASER DIODE TEST HSYNC TEST NG OK LSU OPERATION TEST NG OK 9 SENSOR TEST FEED EXIT PAPER EMPTY COVER OPEN 10 SOLENOID TEST 11 MHV TEST 1550 V 12 DEV TEST 430 V 13 THV 4 TEST 1300 V 14 THV TEST 15 THV TRIGGER TEST 16 ALL FUNCTION TEST This function is for a manufacturing press You can test all function 1 15 When you push the Start button the Main Motor runs f you push the Start button again the current test stops and the next test starts Troubleshooting 5 2 6 Maintenance List A number of reports can be printed from the fax machine To printout the protocol list within the test mode The protocol list all contain detailed information which may be required when contacting techni 1 Get into the Tech mode by pressing Setup 1 9 3 4 cal support 2 Tech mode press Report Help 3 Press lt or repeatedly until you find the Protocol List When you find PROTOCOL LIST press ENTER SAMPLE OF A PROTOCOL DUMP LIST Facsimile Information Field data described in hexdecmal code Sending Receiving Name of signal FIF data described Facsimile Control Field in ASCII code PROTOCOL DUMP LI ST OCT 20 1999 06 35 e FIF DATA NSF 61
80. or use in indus trial office and home environments The modem is available in a 100 pin PQFP package Circuit Description FM336 FEATURES 2 wire half duplex fax modem modes with send and receive data rates up to 33600 bps V 34 V 17 V 29 V 27 ter and V 21 channel 2 Short train option in V 17 and V 27 ter 2 wire full duplex data modem modes V 21 V 23 75 bps TX 1200 bps RX or 1200 bps TX 75 bps RX PSTN session starting V 8 signaling HDLC support at all speeds Flag generation 0 bit stuffing ITU CRC 16 or CRC 32 calculation and generation Flag detection 0 bit deletion ITU CRC 16 or CRC 32 check sum error detection FSK flag pattern detection during high speed receiving Tone modes and features Programmable single or dual tone generation DTMF receive Tone detection with three programmable tone detectors Serial synchronous data Parallel synchronous data Automatic Rate Adaptation ARA in V 34 Half Duplex TTL and CMOS compatible DTE interface ITU T V 24 EIA TIA 232 E data control Microprocessor bus data configuration control e Receive dynamic range 0 dBm to 43 dBm for V 17 V 33 V 29 V 27terand 21 9 dBm to 43 dBm for V 34 half duplex Programmable RLSD turn on and turn off thresholds Programmable transmit level 0 to 15 dBm Adjustable speaker output to monitor received signal DMA support interrupt lines
81. ot over the guaranty life of dot counter yes Is the toner save mode or the light mode is selected YES Replace the developer Ok after setting to the normal mode Is the high voltage normal charging developing transfer NO Y Replace the HVPS NO Any obstacles on the gab between high voltage terminal and Transfer roller works OK OK after replacing LSU Replace the developer NO HVPS works OK Remove the obstacles Clean transfer roller and gear holder Replace the LSU YES END Troubleshooting All Black All black in printing area YES Does the video data line to LSU transit to High Low when printing YES Replace LSU Check the path among video controller engine board HVPS LSU for the shortage or open gt Repair or replace the boards gt Repair or replace HVPS Is transfer NO voltage supplied 71 55 KV Is the NO Hsync signal received in LSU YES Transfer part s contact is bad gt Repair or replace toner cartridge gt Replace LSU 5 15 Troubleshooting Vertical White Line Band White line missing definitely NO Check if the printout is still has th
82. per still remains inside the unit POLLING ERROR The remote fax machine you want to poll is not ready to respond to your poll Or When setting up to poll another fax machine you have used an incorrect poll code The remote operator should know in advance that you are polling and have their fax unit loaded with the original doc ument Enter the correct poll code POWER FAILURE A power failure has occurred If documents have been stored in the memory a Power Failure Report will be printed automatically when the power is restored RECEIVE ERROR A fax has not been received successfully A problem with the facsmile communica tions has occurred Ask the sender to try again The machine is waiting for a specified time inter You can press Start to immediately redi 2 RETRY val to redial a previously busy station al or Stop to cancel the redial operation SEND ERROR Your fax has not gone through successfully A problem with the facsmile communica tions has occurred Try again TONER EMPTY The toner cartridge has run out The machine Replace with a new toner cartridge Stops TONER LOW The toner is almost empty Take out the toner cartridge and gently shake it Using this way you can tem porarily re establish the print quality WARMING UP The printer is warming up and is off line Wait until the printer is on line 5 9 Troubleshooting 5 4 Print Qual
83. phone network through TIP and RING as in fig 1 ARS 1 3 protects the system from voltage overload such as the surge coming through PSTN ARS 2 and ARS 3 are used as overload protection in common mode between TIP RING and FRAME GROUND ARS 1 is used as overload pro tection in normal mode between TIN and RING and it uses ARRESTOR for 600V However arrestor s rated voltage dif fers from European and USA 400v CML CONNECT MODEM to LINE RELAY K1 is a switch designed to selectively connect the PSTN to system voice com munication path and fax communication path In STAND BY MODE and voice communication mode it is connected to TEL PART and FAX PART while communicating and dialing CML Relay K1 CML relay interfaces with T2 600 600 TRANS in communication mode DC Impedance DC impedance is determined in the DC Feeding Unit It represents DC characteristic of the computer con nected through 48V DC power of the switch and lines The DC characteristic of required by the communication standards of a number of countries is the DC resistance of 500 3009 to the current range of 20mA 120mA value varies depend on countries AC Impedance or Return Loss AC impedance is determined by the peripheral circuits of T2 Transformer It is the stan dard required for optimum signal transmission between computer and switch When the AC impedance of the computer for AC signal transmission and the AC impedance of the switch matches the signal can b
84. potential and the maximum is output at 096 and the minimum at 10096 Transfer output unit is THV EA L enable When THV EA is L Q302 turns on and the VCE electric potential of Q302 will be formed and sends IB to TRANS auxiliary wire through R311 C305 and VR302 via current restricting resistance R314 and eventually Q303 will turn on When the cur rent is accepted to Q303 Q303 s Ic increases to the current proportional to time through the T301 primary coil and when it reaches the Hfe limit of Q303 it will not retain the on state but will turn to off As Q303 turns TRANS 1 will have counter electromotive force discharge energy to the secondary coil send current to load and output THV voltage through the high voltage output enable which is comprised of Regulation circuit 18V 24S R201 V 10K 02 11 ER EN v 1 1 T201 C206 KAB 007 3KV470pF 1 1 206 e R205 100 D201 _ caos D204 D205 1N4148 2 amp 0203 708 e 4 R213 5 6 ra 2 2K R207 Q204 gt 2 3KV470pF 2415 2K 0526 Y R216 R218 58306 MGR1 2W100KF j C101 TH ssvazuF A m 4 5 0203 R214 204 R215 ri 1N4148 2021 20205 T 3332 390 SBR207 7 sv gt 18V 0 14148 R312 1W56 ee C307 D304 3KWA470pF 4KV id A708Y e TED t lt R313 ies L coos 58515 2 68
85. r width Take out the paper and re insert YES lt Paper end curled uu Does the extender pulled out Pull out the extender Use the recommended and quality paper lt Recommendation gt Use the MPF for the thick paper such as envelope and cardstock 5 31 Troubleshooting Paper Jam Jam1 Check the LSU and if it has the defect replace it stopped before Paper the fuser Check the actuator exists and its operation and around the engine board gt Replace s the paper rolled around the presseure roller YES Check the roller and ribs of fuser are in place and remove burrs if any gt Remove the factors of jam NO multiple pages YES Remove the fuser remove the paper and replace the Remove any factors pressure roller if necessary The paper Severe skew when feeding developer YES came out through between fuser and Check the input path to the fuser such as mis assembly Adjust the paper guides to fit the Too thin Check guide transfer paper width sensitive paper to is grounded Check Static electricity the shutter prevents The force of springs pressing the feeding developer is weak gt Check guide DEVE paper
86. rfiurelec F 110 FIELD ENGINEERING MANUAL U S version 1 0 Muratec America 6400 International Parkway 1500 Plano Tx 75093 972 364 3300 Voice 972 364 3465 Fax www muratec com This page left intentionally blank F 110 Table of Contents Precautions Specifications Disassembly and Reassembly Circuit Description Troubleshooting Exploded View and Parts List Block Diagram Connection Diagram Se OT POS o N ix mx AA 1 Precautions Please read the following carefully to prevent any accidents and not to damage the unit during service 1 1 Safety Precautions Safety Precautions There are some electric or machinery parts with safety related property If the parts replaced are different from the original the safety may not function Even if the part could allow higher voltage than that of the part used do not replace it and use a regular product clarified in spec ifications Be careful not to leave a switch a cover or a safety device out when reinstalling or assembling the product after repair Replacing Precautions Do not change or add parts as you like You cannot ben efit from such a remodeled product at your will during the term of guarantee You must replace overheated or damaged parts or cords with regular products Please solve the problem causing any damage or overheating and troubles beforehand Especially mind the safety on the p
87. rmal thermistor temperature and re test board lt Open the top cover When black printing is the fuser NIP width is 1 2 Check if the hardness of P R and spring force is OK spring s force 2 5 Kg 3 0mm The paper used is too thick or contains too much cotton in it gt Re test with the recommended paper 5 28 Troubleshooting No Power LCD NO display LED Off Plug in the NO power cord The power voltage supplying is the same as rating YES NO The fan revolves when powered on NO LEDs blink once when powered on v The On Line i apes NO _ The connection eng error between controller board the panel Check the voltage first and plug the power cord v Supply the power as the rating Connections on board are OK YES Fuse of SMPS if open Re connect firmly and re test Replace the fuse Shortage between 5V and GND or between 24V and GND Toner cartridge is in the set YES Put in the cartridge board and panel board or malfunction YES of boards gt Replace the boards Repair replace the board Remove the shortage or replace the board Detect failure due to the b
88. s due to the charge roller is ruined 37 7mm Repair replace HVPS developer 5 21 Troubleshooting Toner Contaminations on Back of Paper Transfer roller NO is clear Paper path is NO clear YES Clean the pressure roller v Clean the transfer roller Clean the paper path 5 22 Troubleshooting Partial Blank Image not Periodic Is it not over NO the guaranty life of dot counter v Replace the toner cartridge Is toner cartridge NO installed correctly Install the toner cartridge correctly Transfer roller works properly NO Clean the TR holder the TR gear OPC roller gear and the transfer roller Clean the contact point of transfer roller Check the output of high voltage terminal and adjust or replace if required 5 23 Troubleshooting Partial Blank Image Periodic Is it not over the guaranty life of dot counter Is toner cartridge installed correctly Is it regular interval of 47 1mm Is it regular interval of 75 4mm 31 6mm or 37 7mm Replace the fuser 50 2mm 45 2mm or exit roller N a p Replace the toner cartridge NO Install the toner cartridge correctly v Transfer roller works properly OK after replacing the transfer
89. s y interval of 47mm YES as transfer roller Is it regular interval of or replace it Clean heat roller Repair or replace HVPS between rollers in Check and Repair or developer replace the terminal Replace developer contacts Check HVPS contacts and HVPS s self output If failed repair Irregularity of NIP replace HVPS Bias voltage is OK 350V Adjust the Bias voltage or replace HVPS Operating storage temperature is too low or not recommended paper used There may be a problem in toner layer control in toner cartridge Replace the developer YES Use the machine with recommended paper and at condition Does the operation of TR work properly Clean TR drive and OPC gear Does the same NO problem persist END YES v A specific part of the transfer roller has ruined or its resistance value is changed Replace transfer roller Transfer roller cannot force regularly due to the gears eccentricity of transfer roller Replace the defective component 5 19 Troubleshooting Black Spot Is it regular interval of 37 7mm Perform the OPC cleaning using the control panel buttons Does the same problesm persist NO END Is it regular
90. sfer Roller 60K Pages Print Fuser Unit 50K Pages Print 2 3 3 Disassembly and Reassembly 3 1 General Precautions on Disassembly When you disassemble and reassemble compo nents you must use extreme caution The close proximity of cables to moving parts makes proper routing a must If components are removed any cables disturbed by the procedure must be restored as close as possible to their original positions Before removing any component from the machine note the cable routing that will be affected Whenever servicing the machine you must per form as follows Check to verify that documents are not stored in memory D Be sure to remove the toner cartridge before you disassemble parts Unplug the power cord Use a flat and clean surface Replace only with authorized components Do not force plastic material components O O Make sure all components are in their proper position Releasing Plastic Latches Many of the parts are held in place with plastic latches The latches break easily release them carefully To remove such parts press the hook end of the latch away from the part to which it is latched Disassembly and Reassembly 3 2 Cradle 1 Push the lever and remove the cradle as shown below 3 3 White Roller 1 Open the OPE cover 2 Push the bushing on the end of the roller slightly inward then rotate it until it reaches
91. t lt X gt X gt gt gt gt gt gt gt gt O 6 13 Exploded View and Parts List 6 7 OPE Unit OPE Unit Parts List Description SEC Code q O Service available X Service not available D 9o gt AS OPE ASS Y MUR JC81 00778A MPR COVER ADDRESS JC74 00005A MPR PAPER ADDRESS JC74 00004A PCT LCD WINDOW JC72 00954A PMO OPE COVER JC72 00952A PMO KEY OT JC72 00188A PMO KEY FUNCTION JC72 00953A PMO KEY COPY JC72 00097A PMO KEY START JC72 00098A PMO KEY STOP JC72 00096A PMO KEY SAVE T JC72 00923A PMO KEY RESOLUTION JB72 00112A PMO KEY TEL JC72 00187A RMO TEL JC72 00954A RMO ONE TOUCH JC73 00121A PBA MAIN OPE JC81 00456B s gt gt gt gt gt gt gt gt gt O Exploded View and Parts List 6 8 Scan Upper Assembly Scan Upper Assembly Parts List Description SEC Code 0 Service available X Service not available D 2 9o gt Remark ELA HOU SCAN UPPER JC81 00457A MEC PINCH JG75 10015A RPR SPONGE ADF JB73 10913A MPR TAPE ADF JB74 10917A CBF HARNESS SCAN GND JC39 00101A SPRING SENSOR JC61 00018A SPRING COIL
92. t page Re test after replacing the conector or Main board Repair or replace the GND terminal Check the path between video controller engine board and HVPS Repair or replace the defective component or board The mirror in LSU might be misplaced so the light path to the OPC deviates gt Repair or replace LSU or remove any deffective matters in the machine 5 12 Troubleshooting Is the connection of OPC GND and Frame Ground correct less than Check the connection of frame Ground and OPC GND Trnasfer NO voltage OK on the transfer roller shaft Repair or replace terminal YES Are the NO correct YES Replace HVPS or repair defective component lt Developing 350V and supplying 550V voltage Is the connection terminal OK Repair or replace terminal are OK Replace HVPS or repair defective component gt Locate the roller into its place counter indicate over the toner s guarranty gt Replace LSU or clean the window Transfer roller might be out of its location This could occurrs when he power of LSU is low or the density is low due to the obstacles on the window Replace the toner cartridge 5 13 Troubleshooting Light image Is it n
93. the parts by the unit declared in deal drawings and service items eee ee ee eee Way to observe Code 8 Description Part code and Description is quoted and controlled by determined standard Refer to this determined standard it will help with ordering Part There are two kinds of Part code inscription type 0000 000000 ex 2007 007961 R CHIP EHEO 000008 ex JB96 01268A ELA UNIT COVER TOP It shows part specific figure Wi character alphabet 1 Controlled by Company It can be commonly used for all kinds of product SEC produce Mostly electronics Parts Type 2 Controlled by Division It is used or one produce Mostly Mostly mechanical Parts A S privately used part It is only used for A S Ass y part Assembled by more than 2 Parts If necessary part is not A S Part Ass y part including necessary par can be used It is shown in the diagram and drawing of SVC manual Ass y part and A S privately used Part is distinguished by part Code and Description The are inscription type 2 It is recognized by Part character and front side of description DIVISION PART CODE DESCRIPTION AIS Private AS JB81 000394 AS USE ABSY Part pes MEC JB75 00068A MEC CHUTE 65 Pan agp teres DEAS JB92 01131A PBA MAIN CONTROLLER ASSY Part gn MEA JB97 01089A MEA UNIT PULLEY IDLE Exploded View and Parts List
94. the slot Then lift the roller out Note Check the roller for any dirt If dirty wipe it off with soft cloth dampened with water If the roller is heavily worn replace it with a new one 3 2 Disassembly and Reassembly 3 4 OPE Cover 1 Pull the cover release button on both sides of the 4 Remove two screws securing bracket scan board machine and open the front cover then take out the bracket scan board 5 Unplug two connectors and one wire from the scan board 2 Remove two stoppers holding the front cover unit and unplug one connector and one wire 3 Pull the bottom left end of the cover downward to unlatch the front cover unit and remove the cover from the main frame 3 3 Disassembly and Reassembly 7 Remove the stopper holding the OPE cover 8 Unlatch the bottom ends then remove the OPE cover 3 4 3 5 ADF Rubber Disassembly and Reassembly 1 Open the OPE unit 2 Insert a flat blade screw driver and pinset into the slot as shown below and release the latches Take out the Holder Rubber Sheet ADF and the Rubber ADF ee gt Holder Rubber as Safely Precautions Do not force to open or fasten plastic material components 1 Pinset or Rubber ADF Notes When you reassemble the th
95. tions Cont d Label Signal Name Description REFERENCE SIGNALS AND MODEM INTERCONNECT VC MI Low Voltage Reference Connect to analog ground through 10 pF polarized terminal to VC and 0 1 uF ceramic in parallel VREF MI High Voltage Reference Connect to VC through 10 pF polarized terminal to VREF and 0 1 pF ceramic in parallel POR Power On Reset Connects to RESET RESET A Reset Connects to POR CLK_OUT IA Clock Connect to M_CLKIN SR4OUT Connect to M_TXSIN SRAIN Connect to M RXOUT SR1IO Connect to M CNTRL SIN CNTRL SIN Connect to SR1IO M CLKIN Connect to CLK OUT M TXSIN Connect to SRAOUT M STROBE Connect to EYESYNC MI SLEEP Connect to SLEEP IA SLEEP Connect to SLEEP GPOO Connect to RDCLK DTE SERIAL INTERFACE RDCLK Receive Data Clock The modem outputs a synchronous Receive Data Clock RDCLK for USRT timing The RDCLK frequency is the data rate 20 0196 with a duty cycle of 50 1 The RDCLK low to high transitions coincide with the center of the received data bits RLSD Received Line Signal Detector For V 17 V 33 V 29 and V 27 ter RLSD goes active at the end of the training sequence If energy is above the turn on threshold and training is not detected the RLSD off to on response time is 816 baud times for V 17 V 33 V 29 and V 27 ter long train 492 baud times for V 17 V 33 and 486 baud times for V 27 ter short train The RLSD o
96. to current time CRU STATE The page number which the toner car tridge can print The yield of a new toner cartridge is approximately 2 500 pages and that of the cartridge supplied with the machine is approximately 1 000 pages value of the CRU state in the system data list 4 In Tech mode print SYSTEM DATA LIST and make sure that the toner information is updated 5 10 Troubleshooting 5 6 Troubleshooting Flow Chart Vertical black line and band Any obstacles on OK after replacing the developer blocking Replace the developer developer the laser beam NO OK after removing the obstacles NO YES END OK after replacing the LSU NO Remove part on the paper path causing the trouble Any obstacles ON mirror lens of LSU and laser path NO p Replace the LSU YES Remove the obstacles 5 11 Troubleshooting No Image No image Self test pattern prints a Aon Check connection to computer or replace controller Self testing is possible via Tech Mode Take out the cartridge and prepare the tester for electronic connection Is the OPC terminal of machine is well connected to Frame Does the video data line to LSU transit to High Low when printing NO NO gt nex
97. ttings including the TECH MODE options To print the sys tem data list press Report Help then press lt or until SYSTEM DATA appears in the dis play and press Start Enter Modem Speed You can set the maximum modem speed Communication is done with modem speed automatically Set at lower speed when communicating with the modem with lower speed since communication is done on the stan dard of the side where modem speed is low for transmis Sion reception It is better set 33 6 KBPS as default setting DIALING MODE Select the dialing mode according to the user s line status TONE Electrical type of dial PULSE Mechanical type of dial SEND FAX LEVEL You can set the level of the transmission signal Typically the Tx level should be under 12 dBm The level within the range of 1 to 15 dBm is acceptable Caution The Send Fax Level is set at the best condition in the shipment from factory Never change set tings arbitrarily FLASH TIME Set the flash time to 80 280 or 600 milliseconds PAUSE TIME Pause time mean delay time unit second inserted between dial number signal and the next number of signal in the automatic dial One touch Speed dial Redial and the manual dial Caution The Send Fax Level is set at the best condition in the shipment from factory Never change set tings arbitrarily REDIAL INTERVAL If the remote machine is busy when the machine sends a fax using autom
98. usy The BUSY output signal indicates that the KS32C65100 parallel port is currently busy Parallel port select The SELECT output signal indicates whether the device connected to the KS32C65100 parallel port is on line or off line Parallel port paper error PERROR output indicates that a problem exists with the paper in the ink jet printer It could indicate that the printer has a paper jam or that the printer is out of paper Not fault The nFAULT output indicates that an error condition exists with the printer This signal can be used to indicate that the printer is out of ink or to inform the user that the printer is not turned on arallel port data bus This 8 bit tri state bus is used to 142 149 1 02 exchange data between the KS32C65100 and an external host peripheral 6 reference voltage for IP ADC 6 Analog input for IP ADC Bottom reference voltage for IP ADC Circuit Description Signal CIS_CLK CIS SI CIS latch signal PHA 0 Line feed motor phase signal A PHA 1 1 PHB IBO Line feed motor phase signal AZ Line feed motor phase signal B PHB IB1 Line feed motor phase signal BZ LF PHO GOPA 21 LF PH1 GOPA 22 Line feed motor control signal 0 Line feed motor control signal 1 CR PHA GOPA 23 Direction control line for phase A CR PHB GOPA 24 Direction control line for phase B CRIAO GOPA 25 Current control line O for phase A

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