Samsung ML-1210 Service Manual
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Samsung ML-1210 Service Manual

Ml-1200 series
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See also: Driver Manual , User Manual
ML-1200 Series
SERVICE
Manual
LASER PRINTER
CONTENTS

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Summary of Contents for Samsung ML-1210

  • Page 1: Service Manual

    ML-1200 Series SERVICE Manual LASER PRINTER CONTENTS...
  • Page 2 This service manual is also provided on the web, © Samsung Electronics Co.,Ltd. October. 2001 the ITSELF system Samsung Electronics Co., Ltd. Printed in Korea. VERSION NO. : 2.03 CODE : JC-0051A...
  • Page 3 Copyright Act. Specifications are subject to change without prior notice. Samsung Electronics Digital Printing CS Group Copyright (c) 2001. 5.

  • Page 4: Precautions

    5. Do not force to open or fasten plastic material compo- latch away from the part to nents. which it is latched. 6. Be careful that small parts such as screws should not get in the printer. Samsung Electronics...

  • Page 5: Tools For Troubleshooting

    The following tools are recommended for safe and smooth troubleshooting described in this service manual. DCU(Diagnostic Control Unit) Driver Standard: Test equipment to diagnose the Laser Standard: "-" type, "+" type (M3 long, M3 short, printer supplied by Samsung Electronics. M2 long, M2 short). Pinset Standard: For general home use, small type. Cotton Swab...

  • Page 6: Specifications

    Specifications 2. Specifications ML-1210 (ML-1220M) ML-1250 Engine Speed 12ppm Resolution 600 x 600 dpi 1200 x 600 dpi FROP(Fist Power On Time) Under 12.5 sec Warm-Up Time 30 sec Power Consumption 25W (Print), 10W (Sleep) Dimension 329 x 355 x 231 mm (13” x 14” x 9.1”) Weight Max 6.5Kg (With Toner Cartridge)

  • Page 7: Disassembly And Reassembly

    3. Top Cover : Remove the cover in the direction of 4. Side Cover L, R : Remove the cover in the direction of 3. Loosen the right lower part of the cover, then push the cover in the direction of arrow to loosen the left lower part. Samsung Electronics...

  • Page 8: Led Panel Pba

    1. Before you remove LSU, you should remove front 3. Remove two connectors from the LSU, then remove cover, rear cover and top cover. the LSU. • Main Cover (see [3-1 Main Cover]) 2. Remove three screws securing the LSU. Samsung Electronics...

  • Page 9: Transfer Roller

    • Main Cover (see [3-1 Main Cover]) • Shield Engine Assembly 2. Remove five screws securing the motor assembly and remove a connector from engine board(Engine board and SMPS board are integrated), then take the motor assembly out. Samsung Electronics...

  • Page 10: Hvps Board

    3. Remove two screws and unplug a fuser assembly harness. Then use a " - " screwdriver to unlatch the • Main Cover (see [3-1 Main Cover]) fuser assembly to remove. 2. Remove two ground screws and a connector as illus- trated. Samsung Electronics...

  • Page 11: Thermostat And Halogen Lamp

    When you reassemble the halogen lamp, handle it with care as it is fragile. Note 2. Remove two screws from the fuser assembly, and take the Heat Roller out. Samsung Electronics...

  • Page 12: Smps Board

    SMPS and remove the SMPS • Main Cover (see [3-1 Main Cover]) board. 2. Remove screws in the order of then remove the shield engine assembly. The Engine board and SMPS board are integrated in a body. Note Samsung Electronics...

  • Page 13: Main Board And Sensor Board

    • SMPS board (see [3-9 SMPS Board]) 2. Remove two screws from the main board and unplug all of connectors, then remove the board. Main B’d 4. Release four snap-fits securing the sensor board and then remove the sensor board. Samsung Electronics...

  • Page 14: Table Of Contents

    4-6-2 The printer is not working (2) ..Page(4-26) 4-3-1 Wrong Print Position .......Page(4-12) 4-6-3 Abnormal Printing......Page(4-27) 4-3-2 JAM 0..........Page(4-12) 4-6-4 SPOOL Error ........Page(4-28) 4-3-3 JAM 1..........Page(4-13) 4-3-4 JAM 2..........Page(4-13) 4-3-5 Multi-Feeding........Page(4-14) 4-3-6 Paper rolled in the fuser ....Page(4-14) 4-3-7 OPC ..........Page(4-15) Samsung Electronics...

  • Page 15: How To Use Dcu

    The front part of paper is jammed between the Discharge sensor and Feed sensor. Paper Jam 2 The front part of paper is jammed just after passing through the discharge sensor. LSU Not Ready LSU Scanner Motor not ready or Hsync signal not output. Samsung Electronics...

  • Page 16: Self Diagnostic Mode

    If you press the button once more, the left LED is on and temperature of the fuser is up to overheat Mode. Hot Burn Test If the [enter] button pressed, the printer is continuously printing without detection. Turn the power off to stop operation. Cleaning Mode Print Mode Print the paper to clean the OPC Drum in the Cartridge. Samsung Electronics...

  • Page 17: Self Test Button

    KNOCK UP EXIT 2 PICK UP CARTRIDGE CARTRIDGE FUSER IDLE H R/L FEED EMPTY SEN FACE UP FEED SEN EXIT 1 SENSOR BOARD SENSOR BOARD MAIN BOARD MAIN BOARD Pr R/L EXIT SENSOR SMPS SHIELD SHIELD SHIELD SHIELD Samsung Electronics...

  • Page 18: The Cause And Solution Of Bad Image

    Remove if found. 5. If the problems are not solved, check to see if the weight of the developer is below 670g. If so, replace the developer cartridge. Samsung Electronics...

  • Page 19: Horizontal Black Band

    4. In case of 37mm interval unremovable in 1, take measures as to replace the developer cartridge and try to print out. 5. Clean the inside of the set against the paper particles and foreign matter in order not to cause the trouble. Samsung Electronics...

  • Page 20: Light Image

    Digital Printer the bad contacts between power supply connects the engine board and HVPS. in the side of the Developer and charge terminal of HVPS. 3. Replace the HVPS if not solved by the above direction 1 and 2. Samsung Electronics...

  • Page 21: Uneven Density

    3. The up-to-down movement of the trans- 3. Clean the busing part of the transfer roller. fer roller is swift? 4. The HVPS is normal? 4. Replace the Developer if not solved by the (Perform DCU diagnostic code 01~04) above direction 1~3. Samsung Electronics...

  • Page 22: Ghost (1)

    Select 'Thick Mode' on paper type menu from Digital Printer mal paper or transparencies such as OHP, the software application and after using return- Digital Printer higher transfer voltage is required. ing to the original mode is recommended. Digital Printer Digital Printer Digital Printer Samsung Electronics...

  • Page 23: Ghost (3)

    2. If the transfer roller is contaminated, satins 2. If the transfer roller is contaminated, run PC on the face of page will occur. Cleaning Mode Print 2 or 3 times. Digital Printer And perform Self-Test 2 or 3 times to remove contamination. 4-10 Samsung Electronics...

  • Page 24: Satins On Back Of Page

    Solenoid is normal.(refer to code 06) 3. If not solved by the above directions 1-2, Replace the engine board. (Service Parts : Figure 9 , chapter 5) 4. Turn the power off, delete the data of PC and try printing again. Samsung Electronics 4-11...

  • Page 25: The Cause And Solution Of The Bad Discharge

    (Service Parts : Figure 8-135, 8-12, chapter 5) become open or is broken away. 5. If the paper feeds into the printer rand Jam 0 occurs, perform DCU to check feed-sensor of the sensor board. 4-12 Samsung Electronics...

  • Page 26: Jam 1

    3. Remove the jammed paper after disas- sembling the fuser : Clean the surface of the pressure roller with dry gauze. • Remove the toner particles stained on the rib. • Check the assemblage and perfor- mance of the exit. Samsung Electronics 4-13...

  • Page 27: Multi-Feeding

    1. Disassemble the fuser, clean the area between the (Background, Hot off set) Heat-roller and Thermistor and remove the foreign matter of the pressure roller. 2. If background appears badly in the printing, fix it by referring to the solutions for background. (See 4-2-8 Background) 4-14 Samsung Electronics...

  • Page 28: Opc

    2. How to remove the rolled paper in the OPC. • Remove the paper while turning the OPC against the ongoing direction. • Clean fingerprints on the OPC softly with soft cloth dampened with IPA(Isopropyl Alcohol) or tis- sue. Samsung Electronics 4-15...

  • Page 29: The Cause And Solution Of The Malfunction

    DCU Mode : Perform DCU diagnostic code 05. If the DCU Replace LSU. error code 95 is displayed, replace LSU. (Service Parts : Figure 13, chapter 5) If you cannot solve the problem after you replace LSU, replace the main board. 4-16 Samsung Electronics...

  • Page 30: Not Function Of The Gear Of The Fuser Due To Melting Away

    (Service Parts : Figure 8-17, chapter 5) 2. The function of the sensor board is defective Perform. 2. Replace the sensor board. DCU mode : Perform DCU diagnostic code 8. (Service Parts : Figure 8-10, chapter 5) Samsung Electronics 4-17...

  • Page 31: Cover Open

    Main Control board. Perform DCU Connect. mode : If Error state '64' occurs, Check the related codes of the Cover Open Error 2. Replace the Main Control board or Cover Open Sensor. (Service Parts : Figure 9, chapter 5) 4-18 Samsung Electronics...

  • Page 32: Defective Motor Operation

    2. Check the inferiority of LED-Panel on the front-cover if 2. Replace the control board. the LED of Panel does not appear after normal warming- (Service Parts : Figure 9, chapter 5) 3. Replace the LED-panel. (Service Parts : Figure 1-1, chapter 5) Samsung Electronics 4-19...

  • Page 33: Vertical Line Getting Curved

    1. Replace LSU. linking with LSU, check drive by DCU Mode: LSU Check (Service Parts : Figure 13, chapter 5) -05- LSU Motor on. 2. Replace the Main Control board. (Service Parts : Figure 9, chapter 5) 4-20 Samsung Electronics...

  • Page 34: Toner Cartridge Service

    4-5 Toner Cartridge Service It is not guaranteed for the default caused by using other toner cartridge other than the cartridge supplied by the Samsung Electronic or caused by non-licensed refill production. 4-5-1 Precautions on Safe-keeping of Toner Cartridge Excessive exposure to direct light more than a few minutes may cause damage to the cartridge.

  • Page 35: Signs And Measures At Poor Toner Cartridge

    (1)Check whether foreign sub- stances or toner are stuck to the terminal (contact point) of the developer. (2)Check whether the state of the terminal assembly is normal. 3. If it cannot be recycled: Replace the developer. 4-22 Samsung Electronics...
  • Page 36 (1)It occurs when the developer the developer. is recycled over 2 times. (2)Check whether the state of (2)If toner nearly being expired the terminal assembly is nor- are collected to use, it is mal. judged as the recycled devel- oper. Samsung Electronics 4-23...
  • Page 37 Clean the terminals of the (point of contact) of the developing roller, then recheck it. developer and the state of assembly. (Especially check the devel- oping roller terminal.) 4-24 Samsung Electronics...

  • Page 38: The Cause And Solutions Of Bad Environment Of The Software

    4. If the scanner needs to be connected to the printer, 4. Check if the printer cable is directly connected to periph- first the remove the scanner from the PC to see if the eral devices printer is properly working alone. Samsung Electronics 4-25...

  • Page 39: The Printer Is Not Working (2)

    Turn the PC and printer off, and reboot the system to print again. If not solved, double-click the printer in my computer If the regular fonts are not printed this time again. the cable must be defective so replace the cable with new one. 4-26 Samsung Electronics...

  • Page 40: Abnormal Printing

    3. Delete the unnecessary files to secure enough (The printing job sometimes stops or due to insufficient space of the hard disk and start printing job again. virtual memory, but it actually comes from the insuffi- cient space of the hard disk.) Samsung Electronics 4-27...

  • Page 41: Spool Error

    Before choosing the document, the menu is still inactive. Or put the document out of the list and repeat the routine as in the above or finish the spool manager. 4-28 Samsung Electronics...

  • Page 42: Exploded Views And Parts List

    The are inscription type 2. It is recognized by Part character and front side of description. DIVISION PART CODE DESCRIPTION A/S Private **81-****** AS-***** (JB81-00039A) (AS-USE) ASS’Y Part **75-****** MEC-***** (JB75-00068A) (MEC-CHUTE) ASS’Y Part **92-****** PBA ****** (JB92-01131A) (PBA MAIN-CONTROLLER) ASS’Y Part **97-****** MEA ****** (JB97-01089A) (MEA UNIT-PULLEY IDLE) Samsung Electronics...
  • Page 43 EMC-HOLDER FEED JC75-00055A 8-30 PMO-HOLDER TR JC72-00100D PBA MAIN-CONTROLLER GDI JC92-01316D ML-1210 PBA MAIN-CONTROLLER PCL JC92-01333A ML-1250 PBA MAIN-ML-1220M IMAC(SUB) JC92-01316C ML-1220M SMPS-ML-1210 V2 JC44-00026A 220V SMPS-ML-1210 V1 JC44-00025A 110V SMPS-HVPS JC44-00024A ML-1210/1220M SMPS-HVPS JC44-00036A ML-1250 ELA UNIT-RX DRIVE JC96-02125A 12-1 MOTOR-STEP 7.5...
  • Page 44 Exploded Views and Parts List 8-18 8-26 8-20 8-22 8-23 8-30 8-21 8-12 8-24 8-13 8-14 8-15 8-19 8-11 8-25 1-2’ 8-4-2 8-17 8-27 8-16 8-29 8-28 8-4-1 8-10 12-1 ML-1210 / ML-1250 ML-1220M Samsung Electronics...

  • Page 45: Front Assembly

    Exploded Views and Parts List 5-2 Front Assembly ML-1210 / ML-1250 0’ ML-1220M DESCRIPTION ELA HOU-COVER FRONT ELA HOU-COVER FRONT CBF-HARNESS-PANEL MAIN PMO-COVER FRONT PMO-GUIDE STACKER PMO-DOOR FACE UP PPR-SHEET PAPER GUIDE PMO-KEY A PMO-KEY B PMO-LENS SED 2’ PMO-COVER PCB...

  • Page 46: Engine/Frame Lower Assembly

    3-12 IPR-PLATE-TERMINAL 3-42 PMO-HINGE FRONT(R) 2-13 PMO-GEAR_TRANSFER 3-13 IPR-SAW_PLATE 3-43 PMO-COVER PTL 2-14 PPR-SPACER DR 3-14 PCT-FILM SAW 3-44 ELA HOU-PTL 2-15 MEC-TRANSFER ROLLER 3-15 IPR-EARTH_TRANS 3-45 PCT-COVER SHEET LAMP 2-16 MEC-TERMINAL 3-16 IPR-GROUND_GUIDE 3-46 PCT-INSULATOR SENSOR B’D Samsung Electronics...

  • Page 47: Fuser Assembly

    14-2 14-2 RMO-RUBBER_EXIT PMO-ROLLER_IDLE EXIT 15-1 IPR-PIN ROLLER EXIT SPRING-EXIT PMO-GEAR_EXIT_DRV16 PMO-GEAR_EXIT_IDLE PMO-GEAR_FUSER LABEL (R)-CAU_HOT_FU SPRING-EXIT DOWN SPRING-ES, GUIDE CLAW GEAR-EXIT F/DOWN BEARING-EXIT FU L PMO-COVER FUSER F/DOWN PMO-HOLDER_EXIT_DOWN PMO-EXIT_DOWN_L PMO-EXIT_DOWN_S RMO-RUBBER-KICKER MEC-UNIT_EXIT, F_DOWN SCREW TAPTITE SCREW TAPTITE Samsung Electronics...

  • Page 48: Shield Engine Unit Assembly

    Exploded Views and Parts List 5-5 Shield Engine Unit Assembly DESCRIPTION ELA HOU-SHIELD ENGINE MEC-SHIELD BRKT CONTROLLER IPR-SHIELD ENGINE IPR-BRKT CONTROLLER PCT-INSULATOR SMPS CBF HARNESS-INLET ASS’Y SCREW-MACHINE SCREW-TAPTITE SCREW-TAPTITE Samsung Electronics...

  • Page 49: Rx Drive Assembly

    MOTOR-STEP PMO-GEAR_71/28 PMO-GEAR_73/22 PMO-GEAR_132/19 IPR-BRKT_MOTOR IPR-BRKT_GEAR CBF-HARNESS_MOTOR SCREW-MACHINE 5-7 Plate-Upper Unit Assembly DESCRIPTION MEC-PLATE UPPER IPR-UPPER-PLATE IPR-PLATE SPRING DEV MEA ETC-ROLLER PICKUP PMO-HOUSING_PICKUP RMO-ROLLER_PICKUP PMO-IDLE_PICKUP MEA ETC-IDLE FEED PMO-HOLDER_PICKUP SPRING-FEED PMO-HOLDER_IDLE,FEED ICT-ROLLER_IDLE,FEED CABLE CLAMP SCREW TAPTITE SCREW TAPTITE Samsung Electronics...

  • Page 50: Block Diagram

    DETECT OR C P U DEV_FUSE Jupiter3 Crystal 10MHz S3C46M0X Mai n Clock FS781BZB PANEL Video Osci l lator Clock B' D 44 MHz MHVPWM OPC GND 3 KEY BIASPWM SUPPLY BUFFER HVPS THVPWM B' D TH V Samsung Electronics...

  • Page 51: Block Diagram(Pcl)

    DEV_FUSE Main 74HCT273 S3C46C0X01 Clock Oscillator 74ACT273 20 MHz Devi d ed by PANEL Video 74HC406ON Clock B' D Oscillator 44 MHz Crystal 6.7149 MHz OPC GND 3 KEY SUPPLY MHVPWM HVPS BIASPWM B' D THVPWM TH V Samsung Electronics...

  • Page 52: Connection Diagram

    THV PW M * EGMOT _A1 MO TOR *THV _EA * NEW_DEVE HV PS THVRE AD EGMOT _ PHA DEV _FUSE * M H VP WM BI ASPW M +5V GND ENG I NE + SM PS Unification ' d Samsung Electronics...

  • Page 53: Connection Diagram(Pcl)

    DEV_FUSE C N 2 PING THV PW M MOTOR_A* MO TOR THV _EN NEW_DVE* HV PS THVRE AD MOTOR_PA DEV_FUSE M H VP WM BI ASPW M +5V GND ENG I NE + SM PS Unification ' d Samsung Electronics...
  • Page 54 Repair Manual Repair Manual LASER PRINTER ML-1200 Series CONTENTS 1. Block Diagram 2. Connection Diagram 3. Schematic Diagrams...
  • Page 55 BLOCK DIAGRAM 1. Block Diagram 1.1 GDI Block Diagram(ML-1210/ML-1220M) Repair Manual Samsung Electronics...
  • Page 56 BLOCK DIAGRAM 1.2 PCL Block Diagram(ML-1250) Repair Manual Samsung Electronics...
  • Page 57 CONNECTION DIAGRAM 2. Connection Diagram 2.1 GDI Connection Diagram(ML-1210/ML-1220M) +24V_T IEEE1284 +24V GND POLYGON *PMOTOR COMPATI ABLE MOTOR +3. 3V CABLE EXT_C LK * HSYNC PI N +5V GND LD DIODE * LD_ON +5V GND 4PI N HOST USB CABLE...
  • Page 58 C N 2 PING THV PWM MOTOR_A* MO TOR THV _EN NEW_DVE* HV PS THVRE AD MOTOR_PA DEV_FUSE M H VP WM BI ASPW M +5V GND ENG I NE + SM PS Unification ' d Repair Manual Samsung Electronics...

  • Page 59: Schematic Diagrams

    SCHEMATIC DIAGRAMS 3. Schematic Diagrams 3.1 GDI Main Circuit Diagram (1/5) Repair Manual Samsung Electronics...
  • Page 60 SCHEMATIC DIAGRAMS Main Circuit Diagram (2/5) Repair Manual Samsung Electronics...
  • Page 61 SCHEMATIC DIAGRAMS Main Circuit Diagram (3/5) Repair Manual Samsung Electronics...
  • Page 62 SCHEMATIC DIAGRAMS Main Circuit Diagram (4/5) Repair Manual Samsung Electronics...
  • Page 63 SCHEMATIC DIAGRAMS Main Circuit Diagram (5/5) Repair Manual Samsung Electronics...
  • Page 64 SCHEMATIC DIAGRAMS 3.2 PC L Main Circuit Diagram (1/9) Repair Manual Samsung Electronics...
  • Page 65 SCHEMATIC DIAGRAMS PCL Main Circuit Diagram (2/9) Repair Manual Samsung Electronics...
  • Page 66 SCHEMATIC DIAGRAMS PCL M a i n Circuit Diagram (3/9) Repair Manual Samsung Electronics...
  • Page 67 SCHEMATIC DIAGRAMS PCL Main Circuit Diagram (4/9) Repair Manual Samsung Electronics...
  • Page 68 SCHEMATIC DIAGRAMS PCL M ainCircuit Diagram (5/9) Repair Manual 3-10 Samsung Electronics...
  • Page 69 SCHEMATIC DIAGRAMS PCL Main Circuit Diagram (6/9) Repair Manual 3-11 Samsung Electronics...
  • Page 70 SCHEMATIC DIAGRAMS PCL M a i n Circuit Diagram (7/9) Repair Manual 3-12 Samsung Electronics...
  • Page 71 SCHEMATIC DIAGRAMS PCL M a i n Circuit Diagram (8/9) Repair Manual 3-13 Samsung Electronics...
  • Page 72 SCHEMATIC DIAGRAMS PCL M a i n Circuit Diagram (9/9) Repair Manual 3-14 Samsung Electronics...
  • Page 73 R513 MGR1/2W 15MF C504 R509 D501 1W 3 12KF 1N4148 VR501 GIL-S-9P-S2T2-EF 24VS 24VS KA7818 A-GND THV-PWM SAMSUNG ELECTRONICS TITLE SWALLOW-HVPS THV-EA THV-READ MHV-PWM DESIGNED CHECKED APPROVED DRW. NO REV. BIAS-PWM 35V 47uF REF. NO D-GND JH.CHO SIZE A4 DATE 01/01/04...
  • Page 74 KA324 200KF C303 R317 R305 5.1KF C302 R301 D302 470K 1N4148 C304 500V 103 VR301 SAMSUNG ELECTRONICS TITLE SWALLOW-HVPS C301 DESIGNED CHECKED APPROVED DRW. NO REV. REF. NO JH.CHO SIZE A4 2 OF 2 DATE 01/01/04 Repair Manual 3-16 Samsung Electronics...
  • Page 75 C506 1.5K 222MAD +24VS CN5-13,15 NO MARKING RESISTOR 1/4W-J (5%) +24VS2 FUSER_ON CN5-16 +24VS +24V A2918SWH 35301-0350 35303-0250 EGMOT_PHA PHASE1 EGMOT_PHB PHASE2 CLUTCH 1008-Y +EGMOT_A1 1008-Y +ENABLE1 2.2K +EGMOT_B1 +ENABLE2 5.6K 5.6K 35303-0450 1.2K 17.4K-F Repair Manual 3-17 Samsung Electronics...
  • Page 76 C506 1.5K 332MAD CN5-13,15 +24VS NO MARKING RESISTOR 1/4W-J (5%) +24VS2 FUSER_ON CN5-16 +24V +24VS A2918SWH 35303-0250 35301-0350 EGMOT_PHA PHASE1 EGMOT_PHB PHASE2 CLUTCH 1008-Y +EGMOT_A1 1008-Y +ENABLE1 +EGMOT_B1 2.2K +ENABLE2 5.6K 5.6K 35303-0450 1.2K 17.4K Repair Manual 3-18 Samsung Electronics...
  • Page 77 SCHEMATIC DIAGRAMS 3.5 Panel Circuit Diagram Repair Manual 3-19 Samsung Electronics...

  • Page 79: Circuit Diagram

    This manual is made and described centering around circuit diagram and circuit description needed in the repair center in the form of appendix. Samsung Electronics Digital Printing CS Group Copyright (c) 2001. 10...
  • Page 80 7-1 Connection Diagram(GDI) .......page(7-1) 7-2 Connection Diagram(PCL) .......page(7-2) Samsung Electronics...

This manual is also suitable for:

Ml-1250Ml-1220m

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