Samsung ML-6050 Service Manual
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Samsung ML-6050 Service Manual

Samsung ML-6050 Service Manual

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SERVICE
LASER PRINTER
LASER PRINTER
ML-6050
QwikLaser 6050
MANUAL
2. Specifications
CONTENTS

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Summary of Contents for Samsung ML-6050

  • Page 1: Table Of Contents

    LASER PRINTER ML-6050 QwikLaser 6050 SERVICE MANUAL LASER PRINTER CONTENTS 1. Precautions 2. Specifications 3. Reference Information 4. Disassembly and Reassembly 5. Troubleshooting 6. Exploded Views and Parts List 7. Electrical Parts List 8. Schematic Diagrams...
  • Page 2 ELECTRONICS ©Samsung Electronics Co., Ltd. Mar. 1999 Printed in Korea P/N. JC68-00072A Rev.1.00...

  • Page 3: Precautions

    11. Unplug this printer from the wall outlet before cleaning. Do not use liquid cleaners or aerosol sprays. Use a damp cloth for cleaning. 12. Do not touch the surface of the photo-sensitive drum as marks or scratches may impair print quality. Samsung Electronics...

  • Page 4: Esd Precautions

    All compo- 5. Use only anti-static solder removal device. Some sol- nents are susceptible to heat damage. der removal devices are not rated as “anti-static;”these can accumulate sufficient electrical charge to damage ESDs. Samsung Electronics...

  • Page 5: Reference Information

    Vp-p peak-to-peak voltage lock bus lock variable resistor Lready LSU power ready millimeter(s) Analog to Digital Converter Light Emitting Diode Address-Latch Enable Laser Scanner Unit ASCII American Standard Code for Main High Voltage Information Interchange Micro Processor Unit Samsung Electronics...
  • Page 6 11. Always inspect the work with a magnifying lens. proper flux and solder which can be cleaned by Check after installing cold solder joints, etc. water. Improper flux may cause the soldering area to cor- rode and may cause a fatal system error. Samsung Electronics...
  • Page 7 Use desoldering wire to completely remove the c. When the solder melts, grasp and remove the old solder from the part location on the board. A part with the soldering iron tips. clean pattern for installing the new part is very Samsung Electronics...
  • Page 8 4. Use a sharp soldering iron tip. Bring close to the part contact without actually touching it. Melt thin 6. Remove any solder bridges with desoldering wire. (0.3mm) solder between the tip and part so that it flows into the part contact. Samsung Electronics...

  • Page 9: Error Status

    High Voltage Probe A high voltage probe which can measure about less than 10KV DCU (Diagnostic Control Unit) DCU can be supplied from Samsung which can easily shows the engine’s error status Table 3-4-1 Equipment List LBP DIAGNOSTIC CONTROL UNIT...
  • Page 10 DEV/SUPPLY HIGH VOLTAGE/PTL ON LSU OPERATING SYSTEM PICKUP CLUTCH ON PEMPTY/PWIDTH/NEW CRU TEST FEED & EXIT SENSOR TEST COVER OPEN SENSOR TEST FUSER TEST HOT BURN TEST CLEANING MODE PRINT THV(+) TRIGGER ALL HV & FAN ON THV(+) REFERENCE ON Samsung Electronics...
  • Page 11 3. Replace OP1, OP3 on the engine board. 4. Check the fuser roller for any dirt. If dirty, clean the roller. 1. Check for U205 on the engine board. 2. Replace LSU. 3. Measure the resistance at R62 and R8. If abnormal, replace them. Samsung Electronics...
  • Page 12 Reference Information Memo Samsung Electronics...
  • Page 13 AC100~120V/ 220~240V(±15%), 50/60Hz (±3%) Power Consumption 300W Printing Avg/14W pring sleep Power Saving During Sleep : Max 28 W Consumption Less than 30W during 1 hour when it turned on Certification & Compliance C-UL, TUV, FCC, CDRH, CE, CB Samsung Electronics...
  • Page 14 2M byte (8M bit x 2 : Program) Flash Memory EEPROM 512 bytes Interface Bidirectional Parallel Standard - IEEE 1284 COMPATIBLE MODE - IEEE 1284 NIBBLE MODE - IEEE 1284 BYTE MODE - IEEE 1284 ECP WITHOUT RLE - IEEE 1284 ECP WITH RLE Samsung Electronics...

  • Page 15: Disassembly And Reassembly

    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. Samsung Electronics...

  • Page 16: Transfer Roller

    1. Press the cover open switch and raise the printer 3. Pull the roller slightly to the right to release the left cover. end of the roller, then take it out. 2. Use a phillips screwdriver to release the right end of the roller. Samsung Electronics...

  • Page 17: Controller Board

    2. Remove one screw. Slide the shield cover in the direction of OPEN arrow marked on the cover, then remove the cover. 4. Remove three screws securing the board and pull the board out of the printer. Samsung Electronics...

  • Page 18: Panel Board

    1. Press the cover open switch and raise the printer 4. Remove three screws from the board, and remove cover. the board. 2. Remove the panel cap. 5. Remove the Window LED and button panel LED. 3. Unplug one connector from the panel board. Samsung Electronics...

  • Page 19: Pickup Assembly

    2. Remove one ground screw. Push the solenoid if you have difficulty to remove the pickup assembly. 4. Check the pickup rubber wear. If the rubber is heavily worn, replace it with a new one. Squeeze this tab to remove the rubber. Samsung Electronics...

  • Page 20: Main Cover

    4. Remove the panel cap inside the operator panel. -Controller Board (see page 4-3) 2. Remove two screws at the back of the printer. 5. Unplug one connector from the panel board. 3. Open the printer cover, and remove two screws. Samsung Electronics...
  • Page 21 3. Remove three screws, and remove the LSU. Then unplug two connectors from the LSU. -Controller Board (see page 4-3) -Main Cover (see page 4-6) 2. Remove two screws securing the fuser cover, and remove the fuser cover. Samsung Electronics...

  • Page 22: Exit Assembly

    2. Remove three screws, and remove the bracket. 5. If you want to remove the exit rollers, sqeeze the bottom of roller and take it out. 3. Remove two screws, unlatch the exit tray and take it out. Samsung Electronics...
  • Page 23 3. If you want to replace the fan, take the fan out. 6. Remove the motor assembly. Remove two screws securing the motor to the motor bracket, then take the motor out. Samsung Electronics...
  • Page 24 -Controller Board (see page 4-3) -Main Cover (see page 4-6) 2. Remove three screws, and remove the bracket. Exit Actuator 5. Remove four screws, and remove the fuser assembly. 3. Remove two screws from the SMPS bracket. 4-10 Samsung Electronics...
  • Page 25 To remove the thermistor from the fuser assembly : 1. Release the wire from the three holders. 2. Remove one screw, then take the thermistor out. Note: When you reassemble the thermistor, make sure that it puts in place. Samsung Electronics 4-11...
  • Page 26 Fuser’ and unplug four connectors. 3. Remove one screw from the engine board. 6. Remove one ground screw. 4. Turn the printer over. Remove six screws from the left and the right base brackets, and take them out. 4-12 Samsung Electronics...
  • Page 27 8. While you push the stopper to release the PCU shield, take the PCU shield out of the printer. To replace HV terminals : Remove the terminals. Stopper HV terminals Note: When you replace with new ones, be careful that they are inserted in place. Samsung Electronics 4-13...
  • Page 28 To replace the paper empty sensor : Take the sensor out while you push the both ends of the sensor inward. To replace the cover open sensor : Remove the spring and take it out. Paper empty sennsor 4-14 Samsung Electronics...
  • Page 29 M3 x 8 2. Turn the unit over, and remove the actuator. To replace the PTL module : Release the three tabs latching the sensor using a phillips screwdriver, then push the sensor down. Samsung Electronics 4-15...
  • Page 30 Release each tab latching the left and right holder, then push the holder down. To replace the thermistor assembly : Remove one screw, and remove the thermistor assembly. Note: When you reassemble the thermistor assembly, make sure that it puts in place. 4-16 Samsung Electronics...
  • Page 31 4-12. ROM 1. Press the cover open switch and raise the printer 3. Replace ROM using the specified jig. cover. Note: When you install a new ROM, be careful for the direction. 2. Remove the ROM cover. Samsung Electronics 4-17...
  • Page 32 Disassembly and Reassembly Memo 4-18 Samsung Electronics...

  • Page 33: Troubleshooting

    2. Transfer roller 3. Charge roller Cause 1. Defective develop roller or bad blade of toner cartridge. 2. Defective transfer roller or charge roller. Solution 1. Replace the toner cartridge, if defective. 2. Replace the roller defective. Remark Others Samsung Electronics...
  • Page 34 3. Open rear cover and check ribs in the fuser for contamination. Clean if necessary. Remark Use LSU cleaner dated after January 1997. Others If white streaks occurs fewer than 5 or 6 times, it can be considered as normal. Samsung Electronics...
  • Page 35 31.3 mm = Supply roller 94.2 mm = OPC drum 46 mm = Develop roller non periodical = Blade Solution 1. Check all voltages, and adjust as necessary. 2. Check for terminal contacts, and replace the cartridge, if necessary. Remark Others Samsung Electronics...
  • Page 36 Repeat 2 or 3 times. Run the self-test. If the same problem persists, replace the developer. 2. Clean the rollers. If problem persists, replace the Developer. 3. The transfer roller guarantees 50,000 sheets printing. If the roller’s life is expired, replace it. Remark Others Samsung Electronics...
  • Page 37 2. In low temperature, wait 30 minutes after printer is powered on before you start printing. 3. Check if the hopper gear is visible from the side of the developer. If not, replace the developer. 4. Check for the supply roller contact and the supply voltage. Remark Others Samsung Electronics...
  • Page 38 Remark Check the charge voltage (MHV) at : U201; while operating, #10/#9 2.5~2.9V, #8 5.5~8.5V while idling, #9 2.7V, #10/#8 0V Q201 operating voltage; Base 2~2.5V, Emitter 0~1V, Collector 30~60V U203; #1 0V input, #2 0V output Others Samsung Electronics...
  • Page 39 2. Check if contrast mode is set to ‘Light’. If not, change the install position of the printer or attach OPC cover sheet (P/No: JC72-49093A). Remark Bias and supply voltage check point: U203; #9 pulse input, #8 pulse output Others Samsung Electronics...
  • Page 40 U201(KA324)’s pin #12, #13 ; 2.5~2.9 V, pin #14 ; 5.5~8.5 V For standby, pin #13 ; 2.7V, pin #12 & #14 ; 0V Q201’s operating voltage ; base=+2~2.5 V, emitter=0~1 V collector=30~60 V U203(7407N)’s pin #1 ; 0V input, pin #2 ; 0V output Remark Others Samsung Electronics...
  • Page 41 (Perform DCU diagnostic code ‘04’ to measure the voltage). Solution 1-1. Check the following parts : U201(KA324), Q204(D526-Y), T204, U203 (SN7407N), resistors, diodes in the output and feedback area. 1-2. Refer to the following information. U203(7407N)’s pin #1; pulse input, pin #2; pulse output. Remark Others Samsung Electronics...
  • Page 42 U201(KA324), Q204(D526-Y), T204, U203 (SN7407N) resistors, diodes in the output and feedback area. 1-2. Refer to the following information. U203(7407N)’s pin #9; pulse input, pin #8; pulse output. 1-3. Check developer contacts for contamination by toner particles. Remark Others 5-10 Samsung Electronics...
  • Page 43 2. The toner level is not even on the developer roller due to the bad blade. Solution 1. Replace defective holder or springs. Adjust the transfer voltage. 2. Replace the developer cartridge. Remark Others Samsung Electronics 5-11...
  • Page 44 1-3. Refer to Error Codes 1-090 and 1-091. 2. Use a recommended type of recording paper. 3. If the printer is under abnormal ambient condition for a long time, print errors may occur. Improve the operating environment. 4. Replace the toner cartridge. Remark Others 5-12 Samsung Electronics...
  • Page 45 2. After replacing the transfer roller, make sure the transfer voltage is normal. 3. Use a recommended type of recording paper. 4. Check for the PTL operation, and if required, check for the main board. Remark Others Samsung Electronics 5-13...
  • Page 46 1. Abnormal low temperature and humidity. In this case, ghost occurs on the entire page and the print density is too light. Solution 1. If the operating temperature and relative humidity are too low, try waiting about 1 hour after power on before using printer. Remark Others 5-14 Samsung Electronics...
  • Page 47 U201(KA324), Q207(A708), Q202(KSD526-Y), T201, U203 (SN7407), resistors, or diodes in the output and feedback area. Remark Others In case of no minus transfer output voltage, image quality may be poor, and background may occur in the printing. Samsung Electronics 5-15...
  • Page 48 1. Select ‘Thick Mode’ on paper type menu from software application to print on card stock or transparencies. 2. If the transfer voltage in the engine board is out of specification, refer to Error Code 1-091 Remark Others 5-16 Samsung Electronics...
  • Page 49 Solution Open the rear cover and check if the heat roller is stained. If stained, disassemble the fuser and clean the rollers with soft cloth dampened with alcohol. If ghost still occurs, replace the fuser. Remark Others Samsung Electronics 5-17...
  • Page 50 2. Abnormal transfer voltage or bad contact of the transfer roller Solution 1. Measure the weight of the developer and replace if the weight is less than 960g +/-20g. 2. Check the supply voltage and adjust if necessary. Check for the contact. Remark Others 5-18 Samsung Electronics...
  • Page 51 3-2. Measure the transfer voltage. If the voltage is abnormal, disassemble the main board and clean the components stained with toner or paper particles. 3-3. Measure the weight of the developer. If the weight is less than 960 g ±20 g, replace the developer. Remark Others Samsung Electronics 5-19...
  • Page 52 1. Clean the unit thoroughly. If problems still occurs, replace the developer. 2. If the roller is shorter than the recording paper or the roller is severely stained, replace the roller. 3. Clean the contaminated components. Remark Others 5-20 Samsung Electronics...
  • Page 53 1. Transfer roller is contaminated. 2. Abnormal (+) (-) transfer voltage, or cleaning voltage. 3. Defective transfer roller Solution 1. Clean the transfer roller thoroughly. Replace if contaminated severely. 2. Adjust the voltages. 3. Replace if necessary. Remark Others Samsung Electronics 5-21...
  • Page 54 1. GND OPC is not well grounded. 2. Seal tape is not removed. 3. Low toner Solution 1. Repair or replace the GND terminal. 2. Remove the seal tape. 3. Shake the toner cartridge and print. Or replace with new one. Remark Others 5-22 Samsung Electronics...
  • Page 55 2. If blank page is printed one time or continuously, check that the video controller oscillates properly at 47.7789 MHz. (lower than 0.75V, higher than 3.5V) 3. If blank pages prints continuously when the printer turns on, check the CPU works properly, and replace if defective. Remark Others Samsung Electronics 5-23...
  • Page 56 3. Defective CPU in the video controller. Solution 1. Check that the port and related parts are properly connected or soldered. 2. Check the oscillators (47.7789 MHz, 50MHz) on the video controller. 3. Replace the CPU on the video controller. Remark Others 5-24 Samsung Electronics...
  • Page 57 When printing on xerographic paper from cassette, the printed image is diffused. Check Engine board Cause Defective the fuser (Heat lamp) control circuit in the engine board. Solution Refer to solution 2-1 under Error Code 3-011. Remark Others Samsung Electronics 5-25...
  • Page 58 1-1. Select ‘Thick Mode’ on paper type menu from the software application to print on card stock or transparencies. 1-2. Check the fuser control circuit. Refer to Solution 2-1 under Error Code 3-011. 2. Check the transfer voltage and adjust if necessary. Remark Others 5-26 Samsung Electronics...
  • Page 59 2. Reassemble or replace the LSU. Reassemble or replace the pick-up ass’y. Reassemble or replace the defective mechanical parts. (for example, Bracket-dust). 3. Replace the solenoid. Check OP1. Check the Vedio Controller or its connection. Remark Others Samsung Electronics 5-27...
  • Page 60 0.7V. One side of R15 in OP1 transmitter should be 5V, and the other end 1.2V. If normal, check OP1 receiver. If not shorted, replace CPU. 3. Replace the cassette, if damaged. Remark Others 5-28 Samsung Electronics...
  • Page 61 1-2. Check OP contacts. In operating mode, U6 (74HC245) pin#13 should be below 0.7V. If not, check OP3 contact resistance. Replace OP3 if over 100 ohms. If the switch works normally, check R30. If defective, replace the exit sensor actuator. 2. In case of multi feeding, refer to Error Code 2-050. Remark Others Samsung Electronics 5-29...
  • Page 62 1-2. Check the exit sensor OP3 contact and related parts. Refer to Error Code 2-030. 2. If the paper is stuck in the fuser, disassemble the fuser and remove the jammed paper, and clean the surface of the pressure roller with soft cloth, dampened with alcohol. Remark Others 5-30 Samsung Electronics...
  • Page 63 2. If the clutch works properly, but the armature does not engage the pick-up housing in the pick-up ass’y, bend the armature to pick up properly. Remark The feed clutch spring has 40 turns. A pad is attached to solenoid yoke, the armature angle is 90 degrees. Others Samsung Electronics 5-31...
  • Page 64 2-2. Check the overheat circuit. When U5 pin 7 is below 0.5V, the overheat circuit should activate and the lamp turns off. In normal mode, pin 6 is approximately 2.6V, pin 5 is over 2.6V, and pin 7 is over 4V. If not, check all related parts. Remark Others 5-32 Samsung Electronics...
  • Page 65 2-3. Replace PC151 if pin 4 and 6 are short. 2-4. Replace Q101 if T1 and T2 are short. 3. Check if the overheat circuit works properly : Refer to the solution 2-2 under ‘Error Code 3-010’. Remark Others Samsung Electronics 5-33...
  • Page 66 (2) When you press UP key with DCU code ‘05’, if ON and OFF lamps do not turn on, check CPU pin 28 and 41, and their related parts. Normally pin 28 is over 3.5V when high, and below 0.7V when low. If the transformer works normally, replace CPU. Remark Others Q3, U3, CN3, SW151 5-34 Samsung Electronics...
  • Page 67 2-2. One end of R24 in the transmitter of OP2 should be 5V, and the other end 1.2V. 2-3. If the related resistors are good, check for short circuit of OP2 receiver. If OP2 is normal, replace U6 (74HC245). Remark Others Samsung Electronics 5-35...
  • Page 68 2-2. Check D4 anode when SW151 is pressed. D4 anode will be below 3.5V when SW151 is open. Check for R38 and R39, and replace if defective. 2-3. If D4 anode is over 3.5V, check if CPU pin 48 is short. If not, replace CPU. 3. Replace the defective actuator. Remark Others 5-36 Samsung Electronics...
  • Page 69 -If all are normal, check CPU pin 55. If OK, replace CPU. 2-2. Check for X1 oscillation (6.94407MHz). 2-3. Replace EPROM in the engine board, if defective. 2-4. If all above are OK, replace CPU. Remark Others U4, U202, Q9 Samsung Electronics 5-37...
  • Page 70 Troubleshooting Error code 3-060 Fault Model ML-xxxx Memory Overflow Description When printing, error message is printed out. Check Control board Cause Insufficient printer memory. Solution Install optional SIMM memory in the control board. Remark Others 5-38 Samsung Electronics...
  • Page 71 2-2. With DCU code ‘00’, check for pulse at U1 pin 8 and pin 13. Or, check the related parts. 2-3. With DCU code ‘00’, check U1 pin 4 and pin 17 are over 4V. If the pins are below 1V, check R424. 2-4. If all above are OK, replace U1. Remark Others Samsung Electronics 5-39...
  • Page 72 2. Foreign materials in the fuser gear or developer Solution 1-1. Replace the LSU, if defective. 1-2. Check the main motor bracket or its wiring harness. 1-3. Check pick-up ass’y rolls. 2. Reassemble or replace the fuser and developer if defective. Remark Others 5-40 Samsung Electronics...
  • Page 73 3. Check F151 on the engine board. If open, measure the resistance between 5V and ground. If it is below 50 ohm, it is short. 4. Check F101 on the engine board. If open, check also : - R114 open - Q102, D-S, G-D, or G-S short - Defective BD101 Remark Others Samsung Electronics 5-41...
  • Page 74 1. For LSU, +24V supply is unstable in the engine board. 2. Difference according to LSU vendors Solution • Check the capacitor between CN 3 pin 5 and +24V is 100nF. • Check the resistor R63 (12.1Kohm). • Replace LSU. • Replace the main board. Remark Others 5-42 Samsung Electronics...
  • Page 75 2. LSU error 3. Bad connection between engine board and control board. Solution 1. Replace the fuser. 2. Replace the LSU. 3. Check the wiring between the engine board and the control board. 4. Replace engine board. Remark Others Samsung Electronics 5-43...
  • Page 76 Fault Model ML-xxxx Jitter Description When printing, image is irregular. Check LSU, Motor bracket Cause 1. LSU hexahedron period 2. Defective motor bracket gears Solution 1. Replace the LSU. 2. Replace the motor bracket ass’y. Remark Others 5-44 Samsung Electronics...

  • Page 77: Exploded Views And Parts List

    6-2. Cover Exploded View 6-3. Frame Exploded View 6-4. Fuser Exploded View 6-5. Drive Assembly Exploded View 6-6. Pick-Up Exploded View 6-7. Cassette Exploded View 6-8. Second Cassette Exploded View (Option) 6-9. Second Cassette Frame Exploded View (Option) Samsung Electronics...

  • Page 78: Main Exploded View

    Exploded Views and Parts Lists 6-1. Main Exploded View Samsung Electronics...
  • Page 79 ELA HOU-CONTROLLER_K JC96-00982A O (220V) JC96-00982B O (110V) PRO-COVER_SIMM JC72-41224A IPR-SHIELD SIMM JC70-10234A MEC-BRKT, BASE JC75-10920B ELA HOU-ENG B’D(220) JC96-01228A O (220V) ELA HOU-ENG B’D(110) JC96-01236A O (110V) Note •110V : for QwikLaser 6050 •220V : for ML-6050 Samsung Electronics...
  • Page 80 Exploded Views and Parts Lists 6-2. Cover Exploded View Samsung Electronics...
  • Page 81 6107-000117 SPRING-COVER OPEN, R JC61-70945A COVER-FRONT, LED JC72-41215F X (220V) COVER-FRONT, XAR JC72-41215E X (110V) WINDOW-LED JC72-41397A BUTTON-PANEL, LED JC72-41219A PBA-PANEL, LED JC92-00346A CAP-PANEL WIRE JC72-41222A SCREW-TAPTITE 6003-000002 Note •110V : for QwikLaser 6050 •220V : for ML-6050 Samsung Electronics...
  • Page 82 Exploded Views and Parts Lists 6-3. Frame Exploded View 18-1 22-1 22-2 18-2 22-3 22-4 16-2 18-3 24-3 24-1 25-1 16-2 24-2 24-2 22-2 18-4 25-2 16-1 16-2 24-4 16-3 16-4 16-1 13-2 13-1 24-5 49-2 49-1 13-2 47-1 43 42 Samsung Electronics...
  • Page 83 JC92-01050A 18-4 CBF HARNESS JC39-40543A CBF HARNESS JC39-40546A GND PLATE G/TR JC70-10980A GROUND-EXIT JC70-11058A MEA RACK-TR HOLDER, L JC97-01079A 22-1 BUSHING-TR12 (L) JC72-41283A 22-2 SPRING-TR (12) JC61-70940A 22-3 HOLDER-TR L (12) JC72-41285A 22-4 SPRING-PLATE (12) JC70-11050A ROLLER-TRANSFER JC75-10962A Samsung Electronics...
  • Page 84 SCREW-TAPTITE 3*8 6003-000119 PLATE-SAW JC70-10232A HOLDER-SAW PLATE JC72-40247A ELA HOU-THERMISTOR JC96-01148A SPRING-CVR OPEN (12) JC61-70964A ACTUATOR-C/O JC72-40269A ELA-DEVELOPER, GUID JC96-00291A 47-1 GUIDE-DEV R JC72-40275A ROM COVER JC72-41186A MEA RACK-EMPTY_ACT JC97-01207A 49-1 SPRING-EMPTY JC61-70965A 49-2 ACTUATOR-EMPTY12 JC72-41290A ACTUATOR-TR JC72-41287A Samsung Electronics...
  • Page 85 Exploded Views and Parts Lists Location No. Description SEC. Code Q'ty Remark HOLDER-ACTUATOR JC72-41289A PBA MAIN-CLN JC92-01084A CBF-HARNESS JC39-40513A ELA-HOU CLEANING PLT JC96-01229A CAP-GND WIRE JC72-00011A CBF-HARNESS MOTOR JC39-40575A Samsung Electronics...
  • Page 86 Exploded Views and Parts Lists 6-4. Fuser Exploded View 6-10 Samsung Electronics...
  • Page 87 4713-001076 O (110V) BEARING-EXIT FU L JC66-10200A GEAR-EXIT JC66-40209A PMO-FUSER UPPER JC72-41073A RING-CS 6044-000001 GEAR-EXIT, L/ID JC66-40964A NPR-ELECTRODE FUSER JC71-10902A THERMOSTAT 4712-000001 PMO-CLAW SEPARATOR JC72-41064A SPRING-CLAW JC61-70922A Note •110V : for QwikLaser 6050 •220V : for ML-6050 Samsung Electronics 6-11...
  • Page 88 Exploded Views and Parts Lists 6-5. Motor Exploded View 6-12 Samsung Electronics...
  • Page 89 JC70-10984A SCREW-MACHINE M3x6 6001-000131 GEAR-FUSER DRIVE JC66-40378A GEAR-125/18 JC66-40376A IPR-BRKT, MOTOR JC70-10985A MOTOR-STEP 3101-001144 GEAR-132/50 (12) JC66-40959A GEAR-IDLE, FU JC66-40377A GEAR-IDLE OPC (12) JC66-40960A GEAR-OPC DRV2 JC66-40001A GEAR-OPC DRIVE (12) JC66-40961A GEAR-FEED DRV (12) JC66-40962A FILM-BRACKET JC73-00002A Samsung Electronics 6-13...
  • Page 90 Exploded Views and Parts Lists 6-6. Pick-Up Exploded View 21 20 6-14 Samsung Electronics...
  • Page 91 JC72-40261A PLT, ROLLER-FEED, SMALL JC72-40262A IMP, SHAFT-FEED, IDLER JC70-10230A PLT, ROLLER-FEED, DRIVE JC72-41295A SCREW (M3X6 FH+, BLK) 6003-000002 PLT, HOLDER-FEED1 JC72-41184A SPRING-FEED (1) JC61-70941A IMP, SHAFT-FEED JC70-10229A PLT, GEAR-FEED JC66-40375A PLT, GEAR-P/UP DRIVE JC66-40219A IMP, GND-FEED JC70-10991A Samsung Electronics 6-15...
  • Page 92 Exploded Views and Parts Lists 6-7. Cassette Exploded View 6-16 Samsung Electronics...
  • Page 93 JG61-70531A LABEL-HEIGHT JG68-30572A PMO-GUIDE LEGAL JC72-41393A IPR-BRACKET_LEGAL JC70-11086A PMO-GUIAE_LETTER JC72-41392A IPR-BRACKET_LETTER JC70-11087A IPR-TENSION_LETTER JC70-11085A PMO-ADJUSTER_S CAST JC72-41394A IPR-GUIDE-PLATE JC70-10993A PMO-FRAME_CASSETTE, P JC72-41382A SCREW-TAPTITE M3x10 FH, WHITE 6003-000002 GUIDE-CASSETTE, M JC72-00013A PMO-GUIDE SUB CAST. JC72-41225A PMO-GUIDE REAR JC72-41180A Samsung Electronics 6-17...
  • Page 94 Exploded Views and Parts Lists 6-8. Second Cassette Exploded View 6-18 Samsung Electronics...
  • Page 95 MMP, PAD JC73-10911A LABEL(R) PLATE JC68-30929A LOCKER-PLATE JC72-41210A SPRING-LOCKER PLATE JG61-70531A GUIDE PAPER JC70-10219A LABEL(R) HEIGHT JG68-30572A GUIDE-LEGAL JC72-41180A IPR-BRACKET_LEGAL JC70-11086A PMO-GUIDE_LETTER JC72-41392A IPR-BRACKET_LETTER JC70-11087A IPR-TENSION_LETTER JC70-11085A GUIDE-SIDE CASSETTE JC72-41116A GUIDE PLATE JC70-10993A FRAME-CASSETTE JC72-41183A PMO-GUIDE REAR JC72-41180A Samsung Electronics 6-19...
  • Page 96 Exploded Views and Parts Lists 6-9. Second Cassette Frame Exploded View 6-20 Samsung Electronics...
  • Page 97 Exploded Views and Parts Lists Second Cassette Frame Parts Lists Location No. Description SEC. Code Q'ty Remark ELA HOU-SCF(ML-6050) JC96-01268A E-RING 6044-000126 BEARING ROLLER IDLER JC66-10304A TAPTITE SCREW 6003-000179 TAPTITE SCREW 6003-000344 FOOT RUBBER JC61-40301A GUIDE INNER UPPER JC72-40307B GEAR-FEED...
  • Page 98 Remark MACHINE SCREW 6001-001532 FRAME LOWER JC70-11065A SHAFT PICKUP JC70-40002A IDLE-SCF JC72-41348A HODER-HOUSING JC72-40654A RUBBER P/UP JC73-40907A BRKT SUPPORT JC70-10461A COVER-RIGHT JC72-40367B TAPTITE SCREW 6003-000205 GROUND ROLLER JC70-10467A FRAME RIGHT(SCF) JC70-10022A MACHINE SCREW 6001-000153 CABLE CLAMP 6502-000003 6-22 Samsung Electronics...

  • Page 99: Electrical Parts List

    Electrical Parts Lists 7. Electrical Parts Lists 7-1. Engine PBA 7-1-1. Engine PBA (ML-6050 : 110V) SEC. Code Location No. Description Spec JC92-01047A ENGINE (110V) 0201-000008 ADHESIVE-HM PP_#3748, WHT, 6500CPS, - 1102-000239 IC-EPROM 27C256, 32Kx8BIT, DIP, 28P, 600MIL 0401-000005 D154, D209...
  • Page 100 R-CARBON 33KOHM, 5%, 1/8W, AA, TP, - 2001-000660 R257, R263, R266 R-CARBON 33KOHM, 5%, 1/8W, AA, TP, - 2001-000660 R500, R503, R507 R-CARBON 33KOHM, 5%, 1/8W, AA, TP, - 2001-000734 R110 R-CARBON 4.7KOHM, 5%, 1/8W, AA, TP, - Samsung Electronics...
  • Page 101 75Kohm, 1%, 1/8W, AA, TP, 1.8x3.2mm 2004-001231 R506 R-METAL 75Kohm, 1%, 1/8W, AA, TP, 1.8x3.2mm 2004-001315 R234 R-METAL 86.6Kohm, 1%, 1/8W, AA, TP, 1.8x3.2 2004-001315 R505 R-METAL 86.6Kohm, 1%, 1/8W, AA, TP, 1.8x3.2 2004-001357 R233 R-METAL 93.1Kohm, 1%, 1/8W, AA, TP, 1.8x3.2 Samsung Electronics...
  • Page 102 C-AL 100uF, 20%, 50V, WT, TP, 8x12, 5 2401-000613 C109, C152 C-AL 1uF, 20%, 50V, WT, TP, 5x11, 5 2401-001476 C-AL 47uF, 20%, 10V, GP, TP, 6.3x5mm, 2.5 2401-001585 C114 C-AL 47uF, 20%, 50V, WT, TP, 8x11.5, 5 Samsung Electronics...
  • Page 103 JP199, JP200, JP203, JP187, JP268, JP204, JP205, JP206, JP208, JP209, JP210, JP211, JP212, JP213, JP214, JP217, JP218, JP219, JP220, JP221, JP222, JP223, JP224, JP225, JP226, JP227, JP228, JP229, JP230, JP231, JP232, JP233, JP234, JP25, JP26, JP27, JP28, JP272, JP273, JP274, JP275, Samsung Electronics...
  • Page 104 5311, DIP, 8P, 300MIL, PLASTIC, -, 3 1404-000167 TH101 THERMISTOR-NTC 5ohm, 10%, 3150K, 18.7mW/C, TP 1405-000147 TNR101 VARISTOR 470V, 4500A, 17x12mm, BK 2003-000703 R157, R158 R-METAL OXIDE(S) 470ohm, 5%, 3W, AA, TP, 6x16mm 2003-000706 R108 R-METAL OXIDE(S) 47Kohm, 5%, 2W, AA, TP, 4.3x12mm Samsung Electronics...
  • Page 105 T202, T204 TRANS AF- ML-80, -, 95MH JC26-20301C T101 TRANS AF- ML-80, -, 0.4WIRE JC26-30506A T203 TRANS POWER-THV ML-7000, -, 57.5/1.3uH, 180mH JC27-40502A L103 COIL CHOCK-68UH ML5500, 68uH, 0.04ohm, 32T JC27-60101B L152 COIL FILTER- -, 9UH, -, - Samsung Electronics...
  • Page 106 Q102, D152.D153 HEAT SINK-TRANS ML-80, AL, - JC62-30002A Q203 HEAT SINK-SMPS ML-80, AL, - JF62-30201A Q101, Q201 HEAT SINK HVPS, SPCC, t1.0 JF68-30527H LABEL(R)-BAR CODE SF1000, PY, 38X6.5, T0.1, WHT JF68-30527N LABEL(R)-BAR CODE SF500, PY, 20X10, T0.1, WHT Samsung Electronics...
  • Page 107 Electrical Parts Lists 7-1-2. Engine PBA (ML-6050 : 220V) SEC. Code Location No. Description Spec JC92-01051A ENGINE (220V) 0201-000008 ADHESIVE-HM PP_#3748,WHT,6500CPS,- 1102-000239 IC-EPROM 27C256,32Kx8BIT,DIP,28P,600MIL 0401-000005 D154,D209 DIODE-SWITCHING 1N4148,75V,200MA,DO-35,TP 0401-000005 D215, D220 DIODE-SWITCHING 1N4148, 75V, 200MA, DO-35, TP 0401-000005 D221, D222, D223, D224...
  • Page 108 33KOHM, 5%, 1/8W, AA, TP, - 2001-000734 R110 R-CARBON 4.7KOHM, 5%, 1/8W, AA, TP, - 2001-000734 R251 R-CARBON 4.7KOHM, 5%, 1/8W, AA, TP, - 2001-000761 R218 R-CARBON 430OHM, 5%, 1/8W, AA, TP, - 2001-000780 R156 R-CARBON 470OHM, 5%, 1/8W, AA, TP, - 7-10 Samsung Electronics...
  • Page 109 86.6Kohm, 1%, 1/8W, AA, TP, 1.8x3.2 2004-001357 R233 R-METAL 93.1Kohm, 1%, 1/8W, AA, TP, 1.8x3.2 2004-001357 R515 R-METAL 93.1Kohm, 1%, 1/8W, AA, TP, 1.8x3.2 2004-002001 R245 R-METAL 12.1Kohm, 1%, 1/8W, AA, TP, 1.8x3.2 2004-004179 R258 R-METAL 174KOHM, 1%, 1/8W, AA, TP, 1.8X3.2MM Samsung Electronics 7-11...
  • Page 110 47uF, 20%, 50V, WT, TP, 8x11.5, 5 2401-001700 C153, C154, C155 C-AL 470uF, 20%, 10V, -, -, 10x12.5, - 2401-002075 C33, C35 C-AL 4.7uF, 20%, 50V, GP, TP, 5x11, 5 2902-001011 BD1, BD101, BD102 FILTER-LINE -, -, - 7-12 Samsung Electronics...
  • Page 111 JP214, JP217, JP218, JP219, JP220, JP221, JP222, JP223, JP224, JP225, JP226, JP227, JP228, JP229, JP230, JP231, JP232, JP233, JP234, JP25, JP26, JP27, JP28, JP29, JP30, JP31, JP216, JP272, JP273, JP274, JP275, JP276, JP601, JP38, JP39, JP40, JP41, JP42, Samsung Electronics 7-13...
  • Page 112 R-METAL OXIDE(S) 47Kohm, 5%, 2W, AA, TP, 4.3x12mm 2009-001082 R280 R-METAL GLAZE 30Mohm, 2%, 2W, -, BK, 30x8.5mm 2009-001083 R220 R-METAL GLAZE 200Mohm, 2%, 1/2W, CM, BK, 18x6mm 2009-001084 R211 R-METAL GLAZE 30Mohm, 2%, 0.5W, CM, BK, 18x6mm 7-14 Samsung Electronics...
  • Page 113 COIL CHOCK-68UH ML5500, 68uH, 0.04ohm, 32T JC27-60101B L152 COIL FILTER- -, 9UH, -, - JC27-60101C L151 COIL FILTER- -, 6UH, -, - JC27-60501A L101 COIL FILTER-LINE220V ML5500, 13.0mH, 0.10ohm, - JC27-60503A L102 COIL FILTER-3MH ML5500, 3.0mH, 0.40ohm, 30T Samsung Electronics 7-15...
  • Page 114 Q102, D152, D153 HEAT SINK-TRANS ML-80, AL, - JC62-30002A Q203 HEAT SINK-SMPS ML-80, AL, - JF62-30201A Q101, Q201 HEAT SINK HVPS, SPCC, t1.0 JF68-30527H LABEL(R)-BAR CODE SF1000, PY, 38X6.5, T0.1, WHT JF68-30527N LABEL(R)-BAR CODE SF500, PY, 20X10, T0.1, WHT 7-16 Samsung Electronics...
  • Page 115 33OHM, 5%, 1/10W, DA, TP, 2012 2007-000781 R93, R94, R127, R128, R142, R-CHIP 33OHM, 5%, 1/10W, DA, TP, 2012 2007-000931 R-CHIP 470OHM, 5%, 1/10W, DA, TP, 2012 2007-000964 R109, R110, R111, R112, R-CHIP 5.1KOHM, 5%, 1/10W, DA, TP, 2012 Samsung Electronics 7-17...
  • Page 116 220pF, 5%, 50V, NPO, TP, 2012, - 2203-000634 C108, C109, C110, C111, C-CERAMIC, CHIP 22pF, 5%, 50V, NPO, TP, 2012, - C112, C120, C157, C158, C165, C166, C190 2203-000938 C341, C342, C343, C344, C-CERAMIC, CHIP 470pF, 5%, 50V, NPO, TP, 2012, - 7-18 Samsung Electronics...
  • Page 117 BOX, 4P, 1R, 2.0mm, STRAIGHT, SN 4701-001020 FREQ-ATTENUATOR 5-80MHz, 15dB, -, 0.03W JC11-10507A IC MASK ROM-HIGH ML-165, KM23C8105DG, SOP, 44P, 600 JC11-10510A IC MASK ROM-PCL6, LOW ml-165, KM23C8105DG, SOP, 44P, 600 JC41-00003A PCB-6050 PCB—CONTROLLER ML-6050, FR-4, 4, 1.6, 192.5*145 Samsung Electronics 7-19...
  • Page 118 2007-000686 R265, R266 R-CHIP 3.3KOHM, 5%, 1/10W, DA, TP, 2012 2007-000781 R150, R153, R154, R168, R-CHIP 33OHM, 5%, 1/10W, DA, TP, 2012 R36, R37, R38, R39, R40, R59, R87, R88, R89, R90, R91, R92, R93, R94, R127, 7-20 Samsung Electronics...
  • Page 119 C80, C81, C82, C83, C84, C85, C167 2203-000444 C139, C144, C145, C146, C-CERAMIC, CHIP 1nF, 10%, 50V, X7R, TP, 2012, - C147, C359 2203-000455 C348, C349, C350, C351, C-CERAMIC, CHIP 1nF, 5%, 50V, NPO, TP, 2012, - C352, C366, C367, C368 Samsung Electronics 7-21...
  • Page 120 JC11-10507A IC MASK ROM-HIGH ML-165, KM23C8105DG, SOP, 44P, 600 JC11-10510A IC MASK ROM-PCL6, LOW ml-165, KM23C8105DG, SOP, 44P, 600 JC13-10506A IC ASIC-RET, GRAY ML-165, HYPER CHIP, PQFP, 100P, 14 JC41-00003A PCB-6050 PCB—CONTROLLER ML-6050, FR-4, 4, 1.6, 192.5*145 7-22 Samsung Electronics...
  • Page 121 Spec JC92-01050A 0601-001244 LD1, LD2, LD3, LD4, LD5, ROUND, RED, 3mm, 690nm LD6, LD7, LD8, LD9, LD10 0601-001244 LD11, LD12, LD13, LD14, ROUND, RED, 3mm, 690nm LD15, LD16, LD17, LD18 JC41-10530A PCB-PTL ML-5500, FRI, 1L, T1.6, 218X8.5 Samsung Electronics 7-23...

  • Page 122: Schematic Diagrams

    EXMREQ 23 LSYNC* nCPUPSYNC EXMACK READY* nENGREADY EXTNWAIT R142 172 nCPUPRINT C301 PRINT* nSC5 nSRD0 144 VIDEO* VIDEO_OUT 220PF nSWR0 VCLK VCLK0 nSRD1 nSWR1 VCLK1 165 WTROUT 194 U36-2 U36-3 U36-4 WTROUT U35-6 74F14 74F08 74F08 74F08 Samsung Electronics Samsung Electronics...
  • Page 123 SLCON3P-TONER 1N4148 DLCON_24P-VIDEO 100NF +24VS1 +5VT +5VS +24VS1 5.6K 5.6K 5.6K 100NF SLCON3P-CLN U205-3 BDCORE PMOTOR 74LS06 LREADY HSYNC LDON U203-3 7407 SLCON11P C231 C503 47UF 10NF 10NF 100UF 100NF 100PF 100PF 10NF R517 CN10 SLCON2P-FAN PT_LAMP KSC1008 Samsung Electronics...
  • Page 124 SLCON2P-MHV U203-6 C230 R237 D223 2.2NF 16.2K 1N4148 C208 Q211 TRANS10P R209 R208 7407 33NF HS201 KSC1008 HEAT_SINK2 Q201 KSD526 +24VS1 U202 +18V +24VS1 KA7818 R217 R207 4.7M C226 C227 C228 C217 R204 100NF 100NF 100UF 10NF 4.7M Samsung Electronics...
  • Page 125 1.2K 1N4148 FEED S58VT 10NF 500V MLC AXIAL +24V CN104 PEMPTY MOTOR_EA S58VT 10NF MOTOR_PA 500V MLC AXIAL FAN_E MOTOR_PB MP_PAPER MP_CLUTCH DLCON_10P C506 47UF EXIT S58VT 10NF R512 R513 R514 PSIZE C502 S58VT 10NF 500V MLC AXIAL Samsung Electronics...
  • Page 126 KSD526 R507 D503 1N4003 Q500 KSC1008 LM324 U201-4 R505 C505 C501 R511 4.7nF 10nF 309K 1N4148 D502 VR205 100KOHM JP641 R501 +18V 2.2K R500 R502 Q501 KSA708 +18V R260 R250 R263 5.6K 2.2K U203-5 THVEA Q207 KSA708 7407 Samsung Electronics...
  • Page 127 SLCON4P-POW SMPS[V1] R112 C112 LOCATION DESCRIPTION 0.1UF C101 220NF,250V C102 47NF,250V ZD102 R114 C107 220UF,200V 5.1V 0.22 C111 R110 R111 C113 680PF 4.7K 4.7NF F101 125V/8A F151 125V/5A PC152,PC153 PC817 Q102 IRF840 T101 1900UH R114 0.1OHM,2W R106,R107 100KOHM,1/2W Samsung Electronics...
  • Page 128 169 nENGHSYNC EXMREQ 23 LSYNC* nCPUPSYNC EXMACK READY* nENGREADY EXTNWAIT R142 172 nCPUPRINT C301 PRINT* nSC5 nSRD0 144 VIDEO* VIDEO_OUT 220PF nSWR0 VCLK VCLK0 nSRD1 nSWR1 VCLK1 165 WTROUT 194 U36-2 U36-3 U36-4 WTROUT U35-6 74F14 74F08 74F08 74F08 Samsung Electronics...
  • Page 129 +5V_3 GND3 nCAS(0) CAS(0) CAS(2) LCAS* VCC1 C181 C182 C183 SIMM VCC2 nCAS(1) 0.1UF 0.1UF 0.1UF CAS(1) VCC3 nCAS(2) CAS(2) 0.1UF 0.1UF 0.1UF nCAS(3) CAS(3) GND1 GND2 C109 C110 C111 C112 GND3 22PF 22PF 22PF 22PF KM416C1200 33UF/16V Samsung Electronics...
  • Page 130 VSS2 RCS2* VSS2 F_RD* VSS2 F_RD* VSS2 MBM29F800B MBM29F800B KM23C8105DG-L KM23C8105DG-H U34-3 WE(0) F_WE* C157 22PF 74F32 U34-1 WR_FLASH RCS0* 74F32 U34-2 R126 nRCS(0) RCS0* F_RD* nRCS(2) RCS2* 74F32 R125 C158 C120 C190 22PF 22PF 22PF C189 0.1UF Samsung Electronics...
  • Page 131 Schematic Diagrams Controller Diagram(4/10) OSC1 FILTER_22NF FILTER_22NF R143 OSCIN C177 R139 0.1UF 2 OSCOUT 0.1UF 68PF DXO-1H-66M C162 10UF REF_OFF REFOUT_RS0 R140 R129 2.2K R144 MODOUT_RS1 SYSCLK C167 18PF C176 C166 FS741 100PF 22PF 8-10 Samsung Electronics...
  • Page 132 5.1K 5.1K 5.1K 5.1K 5.1K FGND MC_ACK* MC_BUSY MC_PERROR MC_SELECT R150 PP_AUTOFD* C180 C178 C179 C163 C164 100PF 100PF 100PF 100PF 100PF CEN_5V R114 R115 R116 R127 PP_INIT* MC_FAULT* R128 PP_SELIN* C129 C128 C130 100PF 100PF 100PF Samsung Electronics 8-11...
  • Page 133 HSYNC* R274 PSYNRQ* R275 READY* EVIDEO* B114 CCLK* PRINT* R276 EMSG* R277 EXITP* R278 EBSY* CONN24 C347 C341 C346 C350 C345 C344 C343 C349 C342 C348 470PF 470PF 1000PF 470PF 470PF 470PF 1000PF 470PF 1000PF 470PF (N.A) 8-12 Samsung Electronics...
  • Page 134 U35-3 E2PROM_DI 74F14 U35-4 E2PROM_SK 74F14 E2PROM_DO 0.1UF U35-5 E2PROM_CS 74F14 93C66G C184 0.1UF LF10 FILTER_150PF C355 R149 0.1UF R124 LED(1) R123 LED(2) R122 LED(3) R291 LED(4) R120 PANEL_KEY CONN7 C147 C359 C146 C145 C144 CONN4 (N.A) Samsung Electronics 8-13...
  • Page 135 68PF 0.1UF C361 48MHZ 10UF REF_OFF R295 REFOUT_RS0 2.2K R294 R293 MODOUT_RS1 C362 18PF C365 C369 FS741 22PF 100PF U38-2 R177 74ACT32 WE(0) nECS1 U38-3 R178 74ACT32 C318 C319 100PF 100PF U38-1 74ACT32 C360 0.1UF U38-4 74ACT32 8-14 Samsung Electronics...
  • Page 136 C333 C334 0.1UF 47PF 68PF 47.7789MHZ 33UF/16V 0.1UF 0.1UF 0.1UF 0.1UF 0.1UF 0.1UF 0.1UF 0.1UF 0.1UF 0.1UF 0.1UF 0.1UF 0.1UF 0.1UF U39-3 74F14 U39-5 HYPER BLOCK Multi Function Image Processor 74F14 U39-4 C325 0.1UF 74F14 U39-6 74F14 Samsung Electronics 8-15...
  • Page 137 D(2) 100PF D(3) RA100 D(4) R700 D(5) RA702 D(6) D(7) RA100 EIRQ0* RA100 B700 1 A(4) B701 1 A(5) C704 CONN20 100PF U700 74F32 U700 WE(0) 74F32 C701 C702 100PF 100PF U700 74F32 C700 0.1UF U700 74F32 8-16 Samsung Electronics...
  • Page 138 Schematic Diagrams 8-4. Flash SIMM 8-17 Samsung Electronics...
  • Page 139 *ENABLE2 A2918SWV OUT2 MOTOR_PB PHASE2 OUT3 SLCON4P 10NF 10NF 10NF DLCON_10P 330PF 820PF 0.33 0.33 820PF 330PF 5.6K +24V BDCORE 1N4003 SLCON2P-FAN FAN_E KSC1008 5.6K DIODE_3P +24V 1N4003 SLCON2P MP_CLUTCH 5101/8 5.6K KSC1008 DIODE_3P MP_PAPER SLCON3P DIODE_3P Samsung Electronics 8-18...
  • Page 140 Schematic Diagrams 8-7. PTL Diagram CONN2 8-19 Samsung Electronics...

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