Samsung ML-4600/XET Service Manual Download Page 14

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Disassembly and Reassembly

3-6

Samsung Electronics

3-8 LSU

1. Before you remove the LSU, you should remove:

– All covers (see page 3-2, 3-4, 3-5)

2. Remove the three screws securing the LSU.

3-9 Transfer Roller

1. Open the front cover.

2. Lift the transfer roller using a proper tool as

shown in the figure and take out the roller.

3. Unplug two connectors from the LSU and

remove the LSU.

Summary of Contents for ML-4600/XET

Page 1: ...G Manual LASER PRINTER CONTENTS 1 Precautions 2 Specifications 3 Disassembly and Reassembly 4 Troubleshooting 5 Exploded Views and Parts List 6 Electrical Parts List 7 Block Diagrams 8 Connection Diagrams 9 PCB Diagrams 10 Schematic Diagrams ...

Page 2: ...ELECTRONICS Samsung Electronics Co Ltd October 2000 Printed in Korea VERSION NO 1 00 P N JC 0029A ...

Page 3: ... original specifications Always determine the cause of damage or overheating and correct any potential hazards 6 Observe the original lead dress especially near sharp edges AC and high voltage power supplies Always inspect for pinched out of place or frayed wiring Do not change the spacing between components and the printed circuit board 7 Product Safety Notice Some electrical and mechanical parts...

Page 4: ...s anti static can generate electrical charges sufficient to damage ESDs 5 Do not use Freon propelled chemicals When sprayed these can generate electrical charges sufficient to damage ESDs 6 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 comp...

Page 5: ... Width 100 216mm Weight For MPF 60 90g m 2 For Manual 60 163g m 2 Paper Capacity MPF 150 Sheets based on 75g m 2 Manual Slot 1 Sheet Paper Stacker Capacity Face up 100 Sheets 75g m 2 20 lb Warming up Time Under 30 Sec First Printing Time Stand By Under 20Sec Power Save Mode Less than 5min Power Rating AC 110V 120V 15 50 60Hz 3Hz AC 220V 240V 15 50 60Hz 3Hz Power Consumption Avg 180Wh Power Saving ...

Page 6: ...g External Dimension 329 W X 343 D x 224 H mm Developer Life Span 5 Pattern Min 2 500 1 000 Sheets Developing Non magnetic Contact Developing Charging Conductive Roller Charging Density Adjustment Normal Economic Mode selectable by the PC driver Only ML 4500 Toner Supply Method Exchanging Toner Cartridge New Developer Checkable Transfer System Conductive Roller Transfer Fusing System Temperature P...

Page 7: ... 10mm 10 Sheets 75g m2 Paper After Cooling Less than 10mm 10 Sheets 75g m2 Paper Reliability Insulation Resistance Less than 10 MΩ at DC 500V Dielectric Strength AC 1000V DC 1420V 10mA Ground Continuity Less than 0 1Ω Voltage DIP Rated Voltage 15 AC Impulse Noise AC 1000V 10 100 200 400 1000ns Rated Power Leakage Current Less than 3 5mA Surge 6 KV 500A 3 KV 500A OZONE Emission Less than 0 1 ppm 8 ...

Page 8: ...ypical 230V 120V Maximum 264V 135V Max AC Input Current 2 5Amps 3Amps Max Inrush Current Ap p at 20 C Output DC Line Regulation 24V 10 5V 5 Road Regulation 24V 10 5V 5 5V 5 Ripple Noise 24V Peak 300mV 5V Peak 500mV 5V Peak 500mV Over Current Protect 24V 2 7A 10 by Circuit 5V A 10 by Circuit Over Voltage Protect 24V 33VDC 5V 5 6VDC ...

Page 9: ...irect room light or sun light and be careful not to scratch the drum surface 2 Turn the power switch off 3 Unplug all the cables from the printer 4 Replace with only an authorized component 5 Do not force to open or fasten a plastic material component 6 Be careful no obstacles are included when you reassemble components 7 When you reassemble components be careful small size components are located ...

Page 10: ... and pull it towards you 3 Release the right bottom of the cover then pull it in the direction of arrow to release the other end 2 Remove the one screw to release the stopper securing the cover to the main body 4 Unplug the connector connecting the OPE cover to the main body and remove the cover ...

Page 11: ...n the direction of arrow Then Spread out the parts securing the guide stacker on both sides to release the cover 3 Remove the LED 4 Remove the PCB from the cover PCB 3 3 OPE Board 1 Before you remove the board you should remove the OPE cover see page 3 2 2 Remove the three screws then remove the cover PCB ...

Page 12: ...ides in the direction of the arrows then lift the rear cover to unlatch it from the bottom then remove the cover 3 5 Top Cover 1 Before you remove the top cover you should remove OPE cover see page 3 2 Rear cover see above 2 Slide the paper guide on the paper tray inwards Remove the two screws on the top cover then remove the cover Paper guides ...

Page 13: ...2 Rear cover see page 3 4 Top cover see page 3 4 Side covers see above 2 Take out the tray from the main frame 3 6 Side covers R L 1 Before you remove the top cover you should remove OPE cover see page 3 2 Rear cover see page 3 4 Top cover see page 3 4 2 Remove the two screws and pull the left and right side covers in the direction of arrow ...

Page 14: ...U you should remove All covers see page 3 2 3 4 3 5 2 Remove the three screws securing the LSU 3 9 Transfer Roller 1 Open the front cover 2 Lift the transfer roller using a proper tool as shown in the figure and take out the roller 3 Unplug two connectors from the LSU and remove the LSU ...

Page 15: ...re you remove the engine board you should remove All covers see page 3 2 3 4 3 5 LSU see page 3 6 2 Unplug the four connectors and remove the two screws from the engine board then pull the board in the direction of arrow 3 Remove the Insulator which was under the engine board ...

Page 16: ...2 3 4 3 5 LSU see page 3 6 2 Unplug all the connectors from the engine board 3 Remove the four screws securing the plate and remove the plate as shown below 4 Remove the two screws and remove the roller from the plate 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 Pick up gear shaft ...

Page 17: ...Before you remove the knock up ass y you should remove All covers see page 3 2 3 4 3 5 LSU see page 3 6 Plate in the pick up roller ass y see page 3 8 2 Pull the knock up ass y fully backward 3 Remove the knock up ass y from the main frame Make sure it is properly unlatched ...

Page 18: ... 3 6 Plate in the pick up roller ass y see page 3 8 Knock up ass y see page 3 10 2 Take out the cap pad from the main frame 3 14 Holder pad 1 Before you remove the holder pad you should remove All covers see page 3 2 3 4 3 5 LSU see page 3 6 Plate in the pick up roller ass y see page 3 8 Knock up ass y see page 3 10 2 Remove the holder pad from the main frame ...

Page 19: ... see page 3 2 3 4 3 5 2 Remove the three screws securing the motor ass y and unplug one connector from the engine board then remove the motor ass y 3 16 Fan 1 Before you remove the fan you should remove All covers see page 3 2 3 4 3 5 2 Unplug the one connector on the fan from the engine board remove the one screw then remove the fan ...

Page 20: ...semble the gear make sure that the direction of the gear is correct 2 Spread out the two snap fits on the gear to release the gear then remove the gear pick up ass y from the main frame 3 18 Solenoid 1 Before you remove the solenoid you should remove All covers see page 3 2 3 4 3 5 2 Unplug the connector on the solenoid from the engine board remove the one screw then remove the solenoid ...

Page 21: ...Before you remove the HVPS board you should remove All covers see page 3 2 3 4 3 5 2 Remove three three screws and the connector from the HVPS board then remove the board Note when you reassemble the board make sure that the five terminals are correctly inserted in place ...

Page 22: ...ou remove the fuser ass y you should remove All covers see page 3 2 3 4 3 5 2 Remove the two ground screws and unplug the one connector as shown in the figure 3 Remove the two screw and unlatch the fuser ass y using a proper tool as shown in the figure then remove the fuser ass y ...

Page 23: ...should remove All covers see page 3 2 3 4 3 5 Fuser ass y see page 3 14 2 Lift and remove the pressure roller from the main frame 3 22 Actuator exit 1 Before you remove the actuator exit you should remove All covers see page 3 2 3 4 3 5 Fuser ass y see page 3 15 2 Lift and remove the actuator exit from the main frame ...

Page 24: ...ce up and remove the face up 4 Remove the two screws and take out thermostat from the fuser ass y 3 Remove the halogen lamp from the heat roller 3 24 Halogen Lamp 1 Before you remove the thermostat you should remove All covers see page 3 2 3 4 3 5 Fuser ass y see page 3 14 2 On the fuser ass y remove the two screws then remove the heat roller 3 On the fuser ass y remove the one screw then remove t...

Page 25: ...re you remove the thermister you should remove All covers see page 3 2 3 4 3 5 Fuser ass y see page 3 14 2 On the fuser ass y remove the heat roller as described on page 3 16 3 Unwrap the thermister wire as shown in the figure 4 Remove the one screw then remove the thermister ...

Page 26: ...move the four screws securing the shield engine ass y and remove the shield engine ass y from the main frame 3 27 SMPS Board 1 Before you remove the SMPS board you should remove Rear cover see page 3 4 Shield engine ass y see above 2 Remove the four screws and on the SMPS board unplug the two connectors from the SMPS board and the one connector from the main board then remove the SMPS board ...

Page 27: ...two screws unplug and all the con nectors from the main board then remove the board 3 29 Sensor Board 1 Before you remove the sensor board you should remove Rear cover see page 3 4 Shield engine ass y see page 3 18 2 Release four snap fits securing the insulator engine board and remove the insulator engine board 3 Release four snap fits securing the sensor board then remove the sensor board ...

Page 28: ...ty Sensor 1 Before you remove these parts you should remove Rear cover see page 3 4 Shield engine ass y see page 3 18 2 Unplug the one connector from the main board and remove the two screws securing the holder feed ass y then remove the holder feeder ass y 3 Remove the feed sensor and the empty sensor ...

Page 29: ...you should remove All covers see page 3 2 3 4 3 5 Motor ass y see page 3 11 2 Spread out the two snap fits on the gear to release the gear then remove gear feed spring clutch and clutch feed from the gear 4 Remove the feed roller from the holder 3 Rotate the pick up bushing in the direction of arrow then remove the the feed roller ass y ...

Page 30: ...Disassembly and Reassembly 3 22 Samsung Electronics MEMO ...

Page 31: ...PLACEMENT CYCLE Cartridge Pickup Roller Feed Roller Transfer Roller Fuser Driver 2 500 Pages 60 000 Pages 60 000 Pages 60 000 Pages 60 000 Pages 60 000 Pages 4 2 Print Quality No Roller Abnormal image period Kind of abnormal image 1 OPC Drum 75 4mm 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 ...

Page 32: ...Print Start The code is displayed when engine controller is received PRINT command from the video controller 30 Feed Sensor On It means that paper is passing the feed sensor 50 Paper out It means that paper passed the exit sensor 69 Sleep Mode It means that the printer fuser is turned off and the power consumption is minimized ERROR STATUS CODE If the printer stops printing by any malfunction the ...

Page 33: ...N THV There is output of 1300V to THV terminal 03 TRANSFER HIGH VOLTAGE REFERENCE ON THV There is output of 1300V to THV terminal 04 DEV SUPPLY HIGH VOLTAGE There is output DEV and SUPPLY high voltage to each HV terminals At this time the left one of three LEDs Diagnostic Mode Indicator in the DCU lights and DEV HV is 630V To change this voltage push the UP button and two center and right of three...

Page 34: ...ng the OPC drum in CRU Same method of the code 06 13 THV TRIGGER ALL HV There is all output of high voltages to each HV terminal and the Motor operate 14 PTL TEST This operation mean PTL LED status 15 FAN TEST This operation mean FAN status 4 3 4 Self Test Button When you push this button the machine prints vertical line pattern while it is pushed In this mode the machine does all printing operati...

Page 35: ...n the paper path causing the trouble NO OK after replacing developer Any obstacles on the developer blocking the laser beam OK after removing the obstacles Any obstacles ON mirror lens of LSU and laser path Remove the obstacles Replace the LSU Replace the developer END YES YES YES NO NO NO 4 4 Troubleshooting Flow Chart ...

Page 36: ...he defective component or board The mirror in LSU might be misplaced so the light path to the OPC deviates Repair or replace LSU or remove any deffective matters in the machine Self test pattern prints No image Self testing is possible via Tech Mode Is the OPC terminal of machine is well connected to Frame Does the video data line to LSU transit to High Low when printing Re test after replacing th...

Page 37: ...Is the connection of OPC GND and Frame Ground correct less than 10 Are the connection terminal and connection correct Repair or replace terminal Replace HVPS or repair defective component Is the connection terminal OK Check the connection of frame Ground and OPC GND Replace HVPS or repair defective component Repair or replace terminal Developing 350V and supplying 550V voltage are OK Does the coun...

Page 38: ...O YES Clean transfer roller and gear holder YES NO Replace the LSU Replace the developer Is it not over the guaranty life of dot counter Is the toner save mode or the light mode is selected Is the high voltage normal charging developing transfer Any obstacles on the gab between high voltage terminal and developer Transfer roller works OK OK after replacing LSU HVPS works OK Light image ...

Page 39: ...n LSU Transfer part s contact is bad Repair or replace toner cartridge Does the video data line to LSU transit to High Low when printing Replace LSU Check the path among video controller engine board HVPS LSU for the shortage or open Repair or replace the boards Repair or replace HVPS Replace LSU NO NO NO NO YES YES YES YES All Black ...

Page 40: ...material might be stuck to blade in the developer inside and it prevents toner supply Replace the toner cartridge Check both if the toner cartridge s counter is over its guaranty and amount of the toner material Replace the toner cartridge The ribs in fuser or toner on the roller may invoke the image problem Replace the fuser cover or the defective part The image is originally black or the black p...

Page 41: ...e Works correctly after replaced LSU Repair or replace the defective component The power of LSU is set high or internal problem Replace LSU or adjust voluem NO Toner over supply due to the adjustment fault of metering blade in developer Replace developer NO YES YES Dark Image ...

Page 42: ... the charge roller or replace step up device terminal after check Work OK Internal blade or suppying part of the developer is defective Replace the toner cartridge Check Terminals or contacts and Guide Deve Spring are misplaced Repair or replace transfer roller etc Print 20 to 30 pages using the recommended paper Same problem occurs Adjust voltage or replace HVPS Repair or replace after checking t...

Page 43: ...ace HVPS There may be a problem in toner layer control in toner cartridge Replace the developer Use the machine with recommended paper and at condition NO NO NO NO NO NO YES YES YES YES YES YES NO YES YES YES YES Check HVPS contacts and HVPS s self output If failed repair replace HVPS Repair or replace HVPS Check and Repair or replace the terminal contacts NO NO Is it regular interval of 31 6mm Is...

Page 44: ...he developer Bad image removes by scratching Check toner is stuck onto the P R or H R in fuser Clean it or replace The problem randomly occured due to the toner fallen Clean the machine Remove obstacles stuck on OPC drum s surface Perform the OPC cleaning using the control panel buttons END NO YES NO NO YES NO YES Does the same problesm persist Is it regular interval of 37 7mm Is it regular interv...

Page 45: ...place the developer This occurs when no Hsync at LSU Replace LSU 75 4 mm interval Heat roller is ruined Replace the roller The OPC is damaged due to the irregular transfer voltage of HVPS Repair replace HVPS If the same problem persists replace the developer Does it appear at every 56 1mm at specific place Problems of terminal contact transfer voltage supplying and transfer roller s due to the cha...

Page 46: ... Samsung Electronics Troubleshooting Transfer roller is clear Clean the transfer roller NO YES Paper path is clear Clean the paper path Clean the pressure roller NO YES Toner Contaminations on Back of Paper ...

Page 47: ... toner cartridge installed correctly Install the toner cartridge correctly NO Transfer roller works properly Clean the TR holder the TR gear OPC roller gear and the transfer roller NO Clean the contact point of transfer roller Check the output of high voltage terminal and adjust or replace if required Partial Blank Image not Periodic ...

Page 48: ... 1mm Transfer roller works properly OK after replacing the transfer roller Is it regular interval of 75 4mm 31 6mm or 37 7mm Replace the fuser 50 2mm 45 2mm or exit 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 END YES YES NO YES NO YES Clean the TR holder the TR gear OPC roller gear and the ...

Page 49: ... repalce Check high voltage output and repair replace terminals HVPS Irregualrity of toner suppy from developer Repalce developer Light distortion due to the mirror ruined or LSU s diffused reflection Replace LSU NO NO YES YES YES YES NO NO OK after taking out and rocking the toner cartridge When gray pattern printing irregular density persists transfer charge developing voltage drops while printi...

Page 50: ...the OPC and machine or replace developer When putting in out the developer scratch is made Replace the developer Transfer voltage is normal 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 NO NO YES YES White Spot ...

Page 51: ...the fan temporarily stops and revolves Use the recommended film Other parts are touching the fan and prevents it from revolution Check and repair NO NO NO YES Set to OHP mode NO YES YES YES Is the OPC mode selected using the software application Recommended OHP film used Inserted over than 10 films into the MPF Trembling at the End When OHP Printing ...

Page 52: ... for a long time Place the machine at normal temperature and re test While printing the voltage of pin 60 of U34 CPU on Main board is 2 0V 2 3V Thermistor s contact is OK Open the top cover When black printing is the fuser NIP width is 1 2 3 0mm The paper used is too thick or contains too much cotton in it Re test with the recommended paper Check if the hardness of P R and spring force is OK sprin...

Page 53: ...he rating Connections on board are OK Re connect firmly and re test The connection error between controller board and panel board or malfunction of boards Replace the boards Fuse of SMPS if open Shortage between 5V and GND or between 24V and GND Replace the fuse Toner cartridge is in the set Detect failure due to the board which detects top cover open or switch error Replace the board or switch Pu...

Page 54: ...to the heat etc Replace the thermostat Check the PCI and fusing control part and CN502 on the SMPS Replace the component or replace the SMPS Measure the resistance at the both ends of AC Line with covers open Remove the covers Re assemble the top cover and close it Thermistor connecting point or engine board defect Repair replace the component board NO NO NO YES YES YES Fuser Error ...

Page 55: ...or and paper width detect sensor are assembled reverse Switch them The Sensor board defected Repair replace Too many papers in the feeder Paper guides fit the paper width Paper end curled Does the extender pulled out Recommendation Use the MPF for the thick paper such as envelope and cardstock Reduce the amount and re test Take out the paper and re insert Use the recommended and quality paper Pull...

Page 56: ...the recommended paper Check guide transfer is grounded Check the shutter prevents feeding Check the input path to the fuser such as mis assembly The actuator of paper exit sensor works OK Check the actuator exists and its operation and around the engine board Replace Is the paper rolled around the presseure roller Remove the fuser remove the paper and replace the pressure roller if necessary Feeds...

Page 57: ... NO Check CBF Harness28P MAIN B D to ENGINE B D YES Check MAIN B D CN12 6 HSYNC Signal Replace LSU NO YES Check MAIN B D CN12 3 P_MOTOR Signal Replace MAIN B D NO YES Check MAIN B D CN12 4 LREDADY Signal Replace LSU NO YES Check MAIN B D CN12 9 LDON Signal Replace MAIN B D NO YES LSU Error ...

Page 58: ...4 28 Samsung Electronics Troubleshooting Memo ...

Page 59: ...ded Views and Parts Lists 5 1 Main Exploded View 5 2 Front Exploded View 5 3 Engine Frame Lower Exploded View 5 4 Fuser Exploded View 5 5 Shield Engine Unit Exploded View 5 6 RX Drive Exploded View 5 7 Plate Upper Unit Exploded View ...

Page 60: ... Views and Parts Lists 5 2 Samsung Electronics 5 1 Main Exploded View S 1 S 1 S 1 SAMSUNG SAMSUNG 7 8 10 9 12 13 11 14 15 16 3 18 17 19 20 2 1 4 5 6 5 1 5 2 5 3 5 4 5 5 5 5 5 10 6 2 6 1 5 6 5 7 5 8 5 9 5 4 5 4 ...

Page 61: ...APTITE SCREW 6 X 6 MEC COVER REAR JC75 00094A 1 O 6 1 PMO TRAY_LARGE 1 X 6 2 PMO COVER REAR 1 X 7 PMO COVER TOP JC72 00522A 1 O 8 PMO COVER SIDE L JC72 00523A 1 O 9 PMO COVER SIDE R JC72 00524A 1 O 10 ELA HOU COVER FRONT JC96 01758C 1 O 11 UNIT LSU JC59 00006A 1 O 12 MEC PLATE UPPER JC75 00111A 1 O 13 IPR PLATE_CHANNEL JC70 00058A 1 O 14 PBA SUB MOTOR JC92 01273A 1 O 15 ELA HOU FRAME LOWER JC96 01...

Page 62: ...Exploded Views and Parts Lists 5 4 Samsung Electronics 5 2 Front Exploded View SAMSUNG SAMSUNG 0 2 10 8 6 1 10 4 5 3 11 7 12 9 ...

Page 63: ...96 01758C 1 O 1 CBF HARNESS PANEL MAIN 1 X 2 PMO COVER FRONT 1 X 3 PMO GUIDE STACKER 1 X 4 PMO DOOR FACE UP 1 X 5 PPR SHEET PAPER GUIDE 2 X 6 PMO KEY A 1 X 7 PMO KEY B 1 X 8 PMO LENS SED 1 X 9 PMO COVER PCB 1 X 10 PMO STOPPER 1 X 11 PMO BRKT PUSH DEVE 1 X 12 PBA SUB DISP PANEL 1 X SA Service Available O Service available X Service not available ...

Page 64: ... 3 3 2 1 2 3 2 12 2 15 2 14 2 13 3 2 3 2 2 3 2 3 3 2 1 3 2 4 3 43 3 44 3 12 3 5 3 17 3 6 3 6 3 4 3 15 2 11 1 2 16 2 16 2 2 16 1 3 3 41 3 25 3 16 3 24 3 22 3 23 3 21 3 46 3 8 3 7 3 27 3 28 3 10 3 47 3 9 3 10 1 3 10 2 3 22 3 23 3 21 3 11 3 13 3 14 3 26 3 38 3 36 3 35 3 40 3 20 3 37 3 45 3 30 2 6 2 5 2 2 2 2 2 3 2 2 1 2 2 2 1 3 1 3 26 3 31 3 39 3 32 3 29 3 19 3 18 3 42 3 34 3 33 2 4 ...

Page 65: ...A 1 O 2 7 MEC KNOCKUP ASS Y JC75 00053A 1 O 2 7 1 PMO PLATE_KNOCKUP 1 X 2 7 2 PMO CAM KNOCKUP 1 X 2 7 3 IPR BAR_KNOCKUP 1 X S 6 SCREW TAPTITE 2 X 2 8 SPRING KNOCK UP JC61 00023A 1 O 2 9 MEC HOLDER PAD JC75 00093A 1 O 2 9 1 PMO HOLDER_PAD JC72 00535A 1 O 2 9 2 PMO HOLDER_PAD 1 X 2 9 3 RPR PAD FRICTION 1 X 2 9 4 SPRING PAD 2 X 2 10 PMO CAP_PAD JC72 00124A 2 O 2 11 MEC SIDE PAD R JC75 00051B 1 O 2 12...

Page 66: ...V R 1 X 3 5 PMO CAP PLTE GU DEV L 1 X 3 6 SPRING GUIDE DEVE 2 X 3 7 PMO ACTUATOR_EXIT 1 X 3 8 PMO HOLDER_EXIT 1 X 3 9 PMO BUSHING_TERMINAL 1 X 3 10 ELA HOU OPEN SENSOR 1 X 3 10 1 IPR BRKT_SENSOR 1 X 3 10 2 CBF HARNESS COVER 1 X S 10 SCREW TAPTITE 1 X 3 11 IPR GUIDE TR 1 X 3 12 IPR PLATE TERMINAL 1 X 3 13 IPR SAW_PLATE 1 X 3 14 PCT FILM SAW 1 X 3 15 IPR EARTH_TRANS 1 X 3 16 IPR GROUND_GUIDE 1 X 3 1...

Page 67: ...32 PMO GEAR_83 35 1 X 3 33 SPRING FUSER DR 1 X 3 34 PMO GEAR_FU_IN 47 1 X 3 35 PMO GEAR_FU_OUT 47 1 X 3 36 MEC ROLLER FEED 1 X 3 37 PBA MAIN SENSOR 1 X 3 38 EMC HOLDER FEED 1 X 3 39 CBF HARNESS MOTOR GND 1 X 3 40 IRP BRKT FUSER DRV 1 X 3 41 PMO HINGE FRONT L 1 X 3 42 PMO HINGE FRONT R 1 X 3 43 PMO COVER PTL 1 X 3 44 ELA HOU PTL 1 X 3 45 PCT INSULATOR SENSOR BD 1 X 3 46 PMO FRONT FUSER 1 X 3 47 PCT...

Page 68: ...Exploded Views and Parts Lists 5 10 Samsung Electronics 5 4 Fuser Exploded View 15 1 15 14 14 2 14 1 10 17 22 11 18 4 12 2 7 13 9 5 1 8 6 19 3 20 S 1 S 1 S 1 S 2 0 24 30 29 27 26 28 21 24 23 25 17 16 ...

Page 69: ...DE CLAW 5 X 12 ELECTRODE WIRE 1 1 X 13 ELECTRODE WIRE S 1 X 14 MEA ETC SHAFT EXIT 1 X 14 1 PMO SHAFT_EXIT Z15 1 X 14 2 RMO RUBBER_EXIT 4 X 15 PMO ROLLER_IDLE EXIT 4 O 15 1 IPR PIN ROLLER EXIT 4 X 16 SPRING EXIT 4 X 17 PMO GEAR_EXIT_DRV16 1 X 18 PMO GEAR_EXIT_IDLE 1 X 19 PMO GEAR_FUSER 1 X 20 LABEL R CAU_HOT_FU 1 X 21 SPRING EXIT DOWN 4 X 22 SPRING ES GUIDE CLAW 4 X 23 GEAR EXIT F DOWN 5 X 24 BEARI...

Page 70: ...Exploded Views and Parts Lists 5 12 Samsung Electronics 5 5 Shield Engine Unit Exploded View 1 2 1 1 1 3 4 2 0 ...

Page 71: ...IELD ENGINE 1 X 1 MEC SHIELD BRKT CONTROLLER 1 X 1 1 IPR SHIELD ENGINE 1 X 1 2 IPR BRKT CONTROLLER JC70 00131A 1 O 2 PCT INSULATOR SMPS JC72 00555A 1 O 3 CBF HARNESS INLET JC39 00117A 1 O 4 CBF HARNESS INLET JC39 00116A 1 O S 1 SCREW MACHINE X S 2 SCREW TAPTITE X S 3 SCREW TAPTITE X SA Service Available O Service available X Service not available ...

Page 72: ...Exploded Views and Parts Lists 5 14 Samsung Electronics 5 6 RX Drive Exploded View 1 4 2 3 5 6 7 S 7 S 7 0 ...

Page 73: ...SEC Code Q ty SA Remark 0 ELA HOU RX DRIVE JC96 01755A 1 O 1 MOTOR STEP JC31 00005A 1 O 2 PMO GEAR_71 28 1 X 3 PMO GEAR_73 22 1 X 4 PMO GEAR_132 19 1 X 5 IPR BRKT_MOTOR 1 X 6 IPR BRKT_GEAR 1 X 7 CBF HARNESS_MOTOR 1 X S 7 SCREW MACHINE 5 X SA Service Available O Service available X Service not available ...

Page 74: ...Exploded Views and Parts Lists 5 16 Samsung Electronics 5 7 Plate Upper Unit Exploded View 0 6 4 4 1 4 2 4 3 2 2 3 1 3 2 3 3 3 3 3 4 4 1 4 2 4 3 5 1 ...

Page 75: ... X 2 IPR PLATE SPRING DEV 2 X 3 MEA ETC ROLLER PICKUP 1 X 3 1 PMO HOUSING_PICKUP 1 X 3 2 RMO ROLLER_PICKUP 1 X 3 3 PMO IDLE_PICKUP 2 X 4 MEA ETC IDLE FEED 2 X 4 1 PMO HOLDER_PICKUP 1 X 4 2 SPRING FEED 1 X 4 3 PMO HOLDER_IDLE FEED 1 X 5 ICT ROLLER_IDLE FEED 1 X 6 CABLE CLAMP 1 X S 1 SCREW TAPTITE 3 X S 9 SCREW TAPTITE 2 X SA Service Available O Service available X Service not available ...

Page 76: ...Exploded Views and Parts Lists 5 18 Samsung Electronics Memo ...

Page 77: ...7 000070 R47 R97 R98 R128 4 R CHIP 0ohm 5 1 16W DA TP 1608 2007 000071 R48 R49 R117 R118 4 R CHIP 22ohm 5 1 16W DA TP 1608 2007 000074 R141 R142 R143 R144 4 R CHIP 100ohm 5 1 16W DA TP 1608 2007 000074 R44 R108 2 R CHIP 100ohm 5 1 16W DA TP 1608 2007 000074 R45 R56 R110 R111 R112 R121 6 R CHIP 100ohm 5 1 16W DA TP 1608 2007 000077 R46 R116 2 R CHIP 470ohm 5 1 16W DA TP 1608 2007 000078 R106 R107 R...

Page 78: ...C166 C170 C171 C172 7 C CERAMIC CHIP 0 033nF 5 50V NP0 TP 1608 2203 000998 C45 C188 1 C CERAMIC CHIP 0 047nF 5 50V NP0 TP 1608 2203 001607 C25 C26 C33 C34 C35 C36 C37 C38 8 C CERAMIC CHIP 0 22nF 5 50V NP0 TP 1608 2203 001656 C27 C28 C48 C49 C50 C51 6 C CERAMIC CHIP 0 47nF 5 50V NP0 TP 1608 2203 005105 C3 1 C CERAMIC CHIP 0 68nF 5 50V NP0 TP 1608 2401 000042 C167 1 C AL 100uF 20 16V GP TP 6 3x7 5 2...

Page 79: ... DISC 820pF 10 50V Y5P TP 5x3 3 2201 001057 C12 1 C CERAMIC DISC 820pF 10 50V Y5P TP 5x3 3 2201 001057 C9 1 C CERAMIC DISC 820pF 10 50V Y5P TP 5x3 3 2401 002300 C1 1 C AL 47uF 20 50V GP TP 6 3x11 5 3711 000470 CN6 1 CONNECTOR HEADER 3WALL 4P 1R 2mm STRAIGHT SN 3711 003346 CN7 1 CONNECTOR HEADER BOX 18P 2R 2mm ANGLE SN 3711 003408 CN2 1 CONNECTOR HEADER BOX 2P 1R 2mm STRAIGHT SN 3711 003968 CN5 1 C...

Page 80: ...NESS MAIN SENSOR SF 5100 26 UL 1061 150mm RED BLUE JC41 00033A SF 5100 XEU 1 PCB SENSOR SF 5100 FR 1 1L 1 6 82 20 6 3 SENSOR PBA PBA SUB DISP PANEL 0601 001254 LED2 1 LED ROUND YEL 3mm 585nm 0601 001255 LED3 LED6 2 LED ROUND GRN 3mm 570nm 0601 001261 LED1 1 LED ROUND RED 3mm 630nm 2001 000323 R1 R2 R3 R4 4 R CARBON 120OHM 5 1 4W AA TP 2 4X6 4MM 2202 000109 C1 1 C CERAMIC MLC AXIAL 100NF 80 20 50V ...

Page 81: ...MHV OPC GND SUPPLY DEV THV MHVPWM BIASPWM THVPWM POWER SWITCH IN LET 4 LED 3 KEY IE EE 12 84 C ABLE V O L T A G E D E T E C T O R P o w e r O n R e s e t Oscillator 20MHz Main Clock Oscillator 28 74448 MHz Video Clock Option Upto 68MB 72pin SIMM socket Crystal 4 446208MHz LSU Motor Clock CPU U S B Devided by 4096 74HC4060 USB Driver USB9602 28M Oscillator 48 MHz 74HCT273 L S U 74ACT245 ...

Page 82: ...Tone G ene ra tor I nte rr up t Co ntr ol 4 E xter na l VI S Eng in e Co mm I F CPU Bus Interface Block Systerm Bus Interface Block Arbiter EDO FPM D RAM C ontrol 4 B ank G EU D M AC 2 C H A D Bus CPU Data BUS CPU Addr BUS Sys Addr BUS Sys Cntl BUS Sys Data BUS PVC P PI HC T ARM7TDMI Cache 8KB ADC RAM 51 2B U ART 3 C H JB IG LRAM 1 296 B CXRAM 25 6B HPVC RAM 51 20 B 5 12 B 2 CH ...

Page 83: ... R16 CN1 R3 C79 C75 U16 R98 R99 R97 R72 U37 CD74HC08M MM74HCT273WM MM74HCT273WM DM7406MX USBN9602 28M ML 4600 PCL JC41 00079A REV2 2 BAR CODE 48MHz KM93C66C KM416C1204CJ L5T KM416C1204CJ L5T U17 C105 C72 C109 C142 C42 R50 RA13 RA14 RA3 RA4 RA15 RA12 RA5 RA7 RA1 RA2 RA6 C121 C146 R37 C94 C123 C93 C100 DSC4 28 7448MHz B2 C120 R52 R54 R17 R18 R8 R9 R10 R19 C165 C164 C169 C172 C10 C171 C170 C91 C58 R1...

Page 84: ...J4 R1 R9 Q6 R4 R14 Q2 R12 R28 R23 R19 R18 U2 C13 C14 R5 R20 C12 Q4 Q3 D3 J3 R21 R6 CN6 MOTOR D4 1 TEA3718DP C1 R25 R27 C11 U1 J11 R26 J14 J13 J5 CN4 DEV_FUSE 1 J6 J9 2 1 J10 R10 J15 E B C E B C E B C E B C TEA3718DP CN5 CN2 CN1 Q1 D1 D2 J8 1 1 1 FAN SOL PTL SF 5100 ENGINE PBA REV 02 JC92 01154A ...

Page 85: ...m CN4 J6 J9 J10 J14 J13 J5 J11 Q6 R10 R9 R14 R12 R4 C10 J2 R17 C1 C9 R20 R24 J1 J7 R1 R4 Q2 R25 R23 C11 R19 R21 J3 C B E C B E C B E C B E Q4 R6 D4 D3 Q3 R5 R20 C12 R18 CN8 R27 R25 J15 D2 D1 CN1 CN2 CN5 C13 SF 5100 ENGINE PCB REV 02 JC41 00031A C14 CN5 CN5 CN5 CN5 J8 ...

Page 86: ...PCB Diagrams Samsung Electronics 9 4 MEMO ...

Page 87: ...5 S M P S 5V 5V GND5 GND5 GND5 FUSER_ON GND24 GND24 24V 24V EXIT UNUSED GND5 GND24 24VS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 5V GND5 LED_ERROR LED_PAPER LED_DATA LED_TONER KEY_TONER KEY_CANCEL KEY_DEMO 1 2 3 4 5 6 7 8 9 LED DISPLAY PANEL 1 2 3 4 5 6 7 8 9 1 2 PTL LED ARRAY 1 2 24V GND24 THVPWM THV_EA THVREAD MHV BIASPWM 5V GND5 1 2 3 4 5 6 7 8 9 H V P S 1 2 3 4 5 6 7 8 9 THERM_A THERM_B 1 2 1 2 THE...

Page 88: ...Memo Samsung Electronics 8 2 Connection diagram ...

Page 89: ... DRAMD21 DRAMD22 163 165 DRAMD23 DRAMD24 166 167 DRAMD25 DRAMD26 168 170 DRAMD27 172 DRAMD28 DRAMD29 173 DRAMD3 136 174 179 180 DRAMA3 DRAMA4 181 183 DRAMA5 DRAMA6 184 185 DRAMA7 DRAMA8 187 189 DRAMA9 132 DRAMD0 DRAMD1 134 146 DRAMD10 DRAMD11 147 149 DRAMD12 DRAMD13 151 DRAMD14 152 153 DRAMD15 DRAMD16 DATA27 DATA28 40 42 DATA29 DATA3 4 DATA30 43 44 DATA31 6 DATA4 DATA5 8 9 DATA6 DATA7 10 DATA8 11 ...

Page 90: ...1 DQ12 36 38 DQ13 DQ14 39 40 DQ15 DQ16 41 DQ2 3 4 DQ3 DQ4 5 7 DQ5 DQ6 8 9 DQ7 DQ8 10 A0 17 18 A1 A2 19 20 A3 A4 23 24 A5 A6 25 26 A7 A8 27 C79 100nF KM416C1204CJ L5T U17 100nF 33pF C165 C75 33pF C172 33 R16 R4 22pF 10 C60 0 R97 C44 22pF 5V 22pF C171 C63 33pF 33pF C170 C169 22uF 16V R3 33 C10 33pF 5V DRAMD 17 DRAMD 18 DRAMD 19 DRAMD 20 DRAMD 21 DRAMD 22 DRAMD 23 DRAMD 24 DRAMD 25 DRAMD 26 DRAMD 27 ...

Page 91: ...13 2 A14 A15 1 A16 32 D9 9 NC1 NC2 10 13 NC3 14 NC4 VCC 37 VSS1 46 VSS2 27 15 _BUSY _BYTE 47 _CE 26 28 _OE 12 _RESET 11 _WE U12 A9 7 D0 29 31 D1 34 D10 D11 36 39 D12 41 D13 43 D14 45 D15 D2 33 D3 35 38 D4 40 D5 42 D6 44 D7 30 D8 A10 6 5 A11 4 A12 3 A13 A14 2 A15 1 A16 48 17 A17 16 A18 A2 23 A3 22 A4 21 A5 20 A6 19 A7 18 A8 8 U13 AM29F800B 70EC 25 A0 A1 24 C41 22pF 22pF C42 100pF C157 R51 68 68 R53...

Page 92: ...R89 3 3V 5V 5V 5V 5V 10K R61 B10 INSTPAR 3 33pF C17 STS104B F2 2 1 MMSD914T1 MMSD914T1 D4 D8 MMSD914T1 D5 100nF C131 2 1 3 1nF C11 100nF STS104B F7 1 NC OUT 5 8 VCC C138 28 6925MHz OSC4 GND 4 5V R67 5 6K 3 2 Q3 KSC1623 G R66 5 6K 3 2 1nF C20 1 Q1 KSC1623 G 1 U8 1 LM393D 3 2 8 4 R102 1K C15 1nF C78 100nF 74F14 U40 2 3 4 7 1 14 2 C58 22pF U40 1 74F14 1nF C191 B2 R21 5V 5V 10K 5 6K R65 R46 470 B3 C17...

Page 93: ...35 2 74ACT32SCX 5 4 C152 100pF 100pF 100pF C154 C155 R33 5 1K 9 10 8 DM7407MX U38 2 3 4 74ACT32SCX U35 3 U35 4 12 13 11 74ACT32SCX 5V 5V C108 100nF 5V 5V 5V 5V 1nF C67 14 B6 13 B7 12 B8 11 DIR 1 10 GND 20 VCC _G 19 A3 4 A4 5 A5 6 A6 7 A7 8 A8 9 B1 18 B2 17 B3 16 B4 15 B5 74ACT245 U2 A1 2 A2 3 33 R5 U39 3 74F14 5 6 5V KEY_DEMO DCU_DIN P_EMPTY P_EXIT COVER_OPEN KEY_TONER LD_ON P_MOTOR DCU_CLK RESET ...

Page 94: ... 5 C5 C6 7 8 C7 C8 C1 C10 11 12 C11 C12 13 14 C13 C14 15 17 C15 C16 18 19 U4 74F1071SCX1 23 22 4 2 3 27 28 1K R28 CENT_5V 1K 36 R30 17 18 C33 C34 220pF 220pF C151 C35 220pF 100pF 9 R12 33 8 7 R58 33 5 1K R7 470pF C28 C27 470pF 470pF C51 5 1K R40 1K R27 1 3 STS104B F9 2 1nF C18 R88 1K CENT_5V 1K R29 R26 1K 33 R13 100 R111 C48 470pF 1K R103 220pF C36 FGND 220pF R36 33 C37 33 33 R59 24 R57 26 25 470p...

Page 95: ...R14 10K 10K R25 10K 6 7 R24 6 24VS 5V R47 0 5V 3 4 5 2 CN3 1 1 5 1K R39 5 1K R38 5 1K 5V R35 1nF C65 1nF C46 R75 10K R101 33K MMSD914T1 D6 5V 24V 5V 14 15 13 11 12 D7 MMSD914T1 CN9 2 2 5V 5V 5V 5V GND24 GND24 4 24VS CN9 4 4 3 8 GND24 5V 7 4 1nF C47 3 1 2 2 GND24 CN2 1 CN6 1 1 100nF C106 100nF C109 100uF 16V C167 9 10 1 100pF CN9 1 5 C148 10 C14 1nF 5V U40 5 74F14 11 3 CN9 3 1nF C21 1 2K R96 D1 RB4...

Page 96: ...pF C73 C62 22pF 100pF C81 100 R113 100 R45 10K R80 C64 1nF R84 1K C136 100nF CN11 1 35301 0250 1 10 24 OSC2 2 386646MHz 5V 5V 5V 5V 5V 5V 5V 22 21 1nF 100nF C133 C30 9 7 8 5 6 4 5V 5V 100nF C183 C175 1nF B6 INSTPAR C182 100nF Q7 6 Q8 14 13 Q9 VCC 16 O 10 Q10 15 1 Q12 2 Q13 Q14 3 7 Q4 5 Q5 4 Q6 CD74HC4060F U7 11 I 9 O CLR 12 8 GND 100 10nF C159 R121 10nF C74 10nF C161 2 R81 10K R44 150 C24 1nF 150 ...

Page 97: ...00nF 787780 1 CN7 4 C129 100nF C45 39pF 10 5V STS104B 2 1 3 R125 16V F14 5V C184 10uF 5V 1nF C189 R118 27 1 5K R133 C55 22pF R132 27 47pF C188 4 7K R127 16V 10uF C54 C103 33pF R135 5V B15 10K CN7 3 787780 1 3 5V STS104B F6 2 1 3 100pF C187 22pF C185 2 2K R131 68 R130 48MHZ 4 GND NC 1 5 OUT VCC 8 OSC3 68 R109 0 R128 R117 EIRQ2 CLK_48M 27 IOCS4 USB_RST CLK_48M DRAMOE DW DRAMA 11 DRAMD 24 31 DRAMD 24...

Page 98: ... 3 1 R9 R14 KSC1008 Y Q6 R12 12K 3 2 1 4 7K D2 1N4148 KSB1151 Y Q1 Q2 KSC1008 Y 2 3 1 1K R27 1 2 GND5 2 35303 0250 CN2 1 D4 1N4003T R 35301 0350 CN5 1 1 24VS GND5 GND24 GND24 GND24 5 6K R5 R28 820 C15 100nF GND24 GND24 1 2 2 3 1 CN6 1 2011P04V000 24VS 5V KSC1008 Y Q3 56K GND24 R24 R17 1K 0 5 R26 5V 1N4003T R D3 10K R23 820pF C10 14 R25 0 5 5V GND24 GND5 GND24 5V R10 5 6K 13 24VS 1 5V 2 35303 0250 ...

Page 99: ... U1 C1 KA324 D501 1N4148 R508 86 6KF R507 27K R509 12KF C502 222 Q501 A708 Y R505 100KF R506 86 6KF C501 104 R504 2K WR501 50K R502 2 2K U2 A 7407 R503 100 R501 5 6K 1 2 5V 18V BIAS PWM CN1 7 CN1 GIL S 9P S2T2 EF 5V BIAS PWM D GND THV READ MHV PWM THV PWM THV EA 24VS 24VS 1 2 3 4 5 6 7 8 9 A GND C1 104 U3 KA7818 IN OUT GND 18V C2 104 C3 35V 47uF MHV PWM CN1 6 U2 B 7404 R422 5 6K R411 2 2K 5V 3 4 R...

Page 100: ...GR1 2W 100KF R216 BR1 2W 30MJ D304 4KV C204 473 R215 430 R214 5 6K ZD202 7 5V ZD201 5 6V R213 24VS 2 2K Q204 D526 Y U1 B KA324 7 5 6 D203 1N4148 C203 223 R212 470K D201 1N4148 R210 510KF C201 103 C202 331 VR201 50K R209 110KF U2 E 24VS 7407 U2 F 7407 THV PWM CN1 3 R201 10K C101 35V 47uF R208 30KF R205 1K 18V R207 2K Q203 A708 Y R206 100 R211 1MF D202 1N4148 471 101 D207 6KV D206 6KV C207 6KV 471 C...

Page 101: ...Schematic Diagrams 10 13 Samsung Electronics 10 4 Panel Circuit Diagram ...

Page 102: ...22MAD C503 222MAD C506 630V 103 R504 82 1W R505 3W 47K R508 30 C509 50V 33uF C508 100V 223 R507 1W 0 37 D508 SF60 04 C517 50V 1000uF C520 16V 1000uF R518 4 3K R519 510 R521 2 2K F R520 2 2K F C522 10V 470uF D501x4 1N5406 C510 222MAD C523 50V 104 C518 50V 104 R524 150 R523 15K OP501 ITR8406 S R516 500 5W TNR502 102K LF502 0540 CN502 1 2 U502 T16A6CI PC502 MOC3061 L501 300uH C511 500V 103 R511 1W 12...

Page 103: ...H CN501 L F G N C504 224 C502 222MAD C503 222MAD C506 630V 103 R505 3W 47K D506 200V1A R508 30 C509 50V 33uF C508 100V 223 R507 1W 0 75 D508 SF60 04 C517 50V 1000uF C520 16V 1000uF R518 4 3K R519 510 R521 2 2K F R520 2 2K F C522 10V 470uF D501x4 1N5406 C510 332MAD U501 STRT G6153 VCC 5 DRAIN 1 OCP 2 GND 3 FB 4 R503 1W 100K C523 50V 104 C518 50V 104 R524 150 R523 15K OP501 ITR8406 S R516 500 5W LF5...

Page 104: ...4 3 6 Side covers R L 3 5 3 7 Paper Tray 3 5 3 8 LSU 3 6 3 9 Transfer Roller 3 6 3 10 Engine Board 3 7 3 11 Pick up Roller ass y 3 8 3 12 Knock up ass y 3 9 3 13 Cap pad 3 10 3 14 Holder pad 3 10 3 15 Motor ass y 3 11 3 16 Fan 3 11 3 17 Gear Pick up ass y 3 12 3 18 Solenoid 3 12 3 19 HVPS Board 3 13 3 20 Fuser ass y 3 14 3 21 Pressure Roller 3 15 3 22 Actuator exit 3 15 3 23 Thermostat 3 16 3 24 H...

Page 105: ...lack 4 9 Vertical White Line Band 4 10 Dark Image 4 11 Background 4 12 Ghost 4 13 Black Spot 4 14 Horizontal Band 4 15 Toner Contaminations on Back of Paper 4 16 Partial Blank Image not Periodic 4 17 Partial Blank Image Periodic 4 18 Irregular Density 4 19 White Spot 4 20 Trembling at the End When OHP Printing 4 21 Poor Fusing Grade 4 22 No Power LED Off 4 23 Fuser Error 4 24 Paper Jam Mis feeding...

Page 106: ...iagram 7 1 Memo 7 2 8 Connection diagram 8 1 8 Connection diagram 8 1 Memo 8 2 9 PCB Diagrams 9 1 9 1 Main PCB Diagram Top 9 1 9 2 Engine PCB Diagram TOP 9 2 9 3 Engine PCB Diagram Bottom 9 3 10 Schematic Diagrams 10 1 10 1 Main Circuit Diagrams 10 1 10 2 Engine Circuit Diagram 10 10 10 3 HVPS Circuit Diagram 10 11 10 4 Panel Circuit Diagram 10 13 10 5 SMPS Circuit Diagram 110V 10 14 10 6 SMPS Cir...

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Samsung ML-4600/XET, Service Manual

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