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Samsung ML-1200 manuel d'utilisation

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Le mot vient du latin "Instructio", à savoir organiser. Ainsi, le manuel d’utilisation Samsung ML-1200 décrit les étapes de la procédure. Le but du manuel d’utilisation est d’instruire, de faciliter le démarrage, l'utilisation de l'équipement ou l'exécution des actions spécifiques. Le manuel d’utilisation est une collection d'informations sur l'objet/service, une indice.

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Tout d'abord, le manuel d’utilisation Samsung ML-1200 devrait contenir:
- informations sur les caractéristiques techniques du dispositif Samsung ML-1200
- nom du fabricant et année de fabrication Samsung ML-1200
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Habituellement, cela est dû au manque de temps et de certitude quant à la fonctionnalité spécifique de l'équipement acheté. Malheureusement, la connexion et le démarrage Samsung ML-1200 ne suffisent pas. Le manuel d’utilisation contient un certain nombre de lignes directrices concernant les fonctionnalités spécifiques, la sécurité, les méthodes d'entretien (même les moyens qui doivent être utilisés), les défauts possibles Samsung ML-1200 et les moyens de résoudre des problèmes communs lors de l'utilisation. Enfin, le manuel contient les coordonnées du service Samsung en l'absence de l'efficacité des solutions proposées. Actuellement, les manuels d’utilisation sous la forme d'animations intéressantes et de vidéos pédagogiques qui sont meilleurs que la brochure, sont très populaires. Ce type de manuel permet à l'utilisateur de voir toute la vidéo d'instruction sans sauter les spécifications et les descriptions techniques compliquées Samsung ML-1200, comme c’est le cas pour la version papier.

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Table des matières du manuel d’utilisation

  • Page 1

    SERVICE LASER PRINTER ML-1200 Series ML-1210 / ML-1250 / ML-1220M Manual LASER PRINTER CONTENTS 1. Precautions 2. Specifications 3. Disassembly and Reassembly 4. T roubleshooting 5. Exploded Views and Parts List 6. Block Diagram 7. Connection Diagram[...]

  • Page 2

    © Samsung Electronics Co.,Ltd. October . 2001 Printed in Korea. VERSION NO. : 2.03 CODE : JC-0051A This service manual is also provided on the web, the ITSELF system Samsung Electronics Co., Ltd. http://itself.sec.samsung.co.kr[...]

  • Page 3

    This manual is stated and provided for service description. All rights reserved. Any parts of the information in this manual are pr ohibited from fr ee duplication, use or translation without prior written approval except in cases allowed by the Copyright Act. Specifications are subject to change without prior notice. Copyright (c) 2001. 5. Samsung[...]

  • Page 4

    Precautions 1-1 Samsung Electronics 1. Precautions 1-1 Safety Precautions 1-2 Precautions on Disassembly and Reassembly Please read the following carefully to prevent any accidents and not to damage the unit during service. 1. Safety Precautions There are some electric or machinery parts with safety related property . If the parts replaced are dif-[...]

  • Page 5

    Precautions 1-2 Samsung Electronics 1-3 T ools for T roubleshooting The following tools are recommended for safe and smooth troubleshooting described in this service manual. DCU(Diagnostic Control Unit) Standard: T est equipment to diagnose the Laser printer supplied by Samsung Electronics. DVM(Digital V olt Meter) Standard: Indicates more than 3 d[...]

  • Page 6

    Specifications 2-1 Samsung Electronics 2. Specifications Speed Resolution FROP(Fist Power On T ime) W arm-Up T ime Power Consumption Dimension Weight Processor Memory Emulation Interface OS Support N/W Input Output Manual Media T ype T ype Life Cartridge Pick up Roller Feed Roller T ransfer Roller Fuser Key & LED LCD T oner Save Reprint Engine [...]

  • Page 7

    3-1-1 Front Cover 1. Pull the both side of the cover to open. 2. Remove a screw and remove the stopper that holds the printer cover . 3. Loosen the right lower part of the cover , then push the cover in the direction of arrow to loosen the left lower part. 4. Remove a screw of the front cover PCB and remove the connector , then remove the cover . 3[...]

  • Page 8

    Disassembly and Reassembly 3-2 Samsung Electronics 3-2 LED Panel PBA 1. Before you remove other covers, you should remove. • Front Cover (see [3-1 Main Cover]) 2. Remove two screws of PCB cover , and widen the hooks( ) to remove. 3. Remove two screws, and remove LED panel. 4. Remove PCB from the PCB cover . 3-3 LSU(Laser Scanning Unit) 1. Before [...]

  • Page 9

    Disassembly and Reassembly 3-3 Samsung Electronics 3-4 T ransfer Roller 1. Open the front cover . 2. Use a proper tool("-" type screwdriver) to pull the one end of the roller slightly , then take it out. 3-5 Motor Assembly 1. Before you remove the motor assembly , you should remove: • Main Cover (see [3-1 Main Cover]) • Shield Engine [...]

  • Page 10

    Disassembly and Reassembly 3-4 Samsung Electronics 3-6 HVPS Board 1. Before you remove HVPS board, you should remove: •Main Cover (see [3-1 Main Cover]) 2. Remove four screws and a connector from HVPS board, then take the board out. 3-7 Fuser Assembly 1. Before remove fuser assembly , you should remove: • Main Cover (see [3-1 Main Cover]) 2. Re[...]

  • Page 11

    Disassembly and Reassembly 3-5 Samsung Electronics 3-8 Thermostat and Halogen Lamp 1. Remove a screw from the fuser assembly and remove the thermostat cover , then remove two screws securing the thermostat. 2. Remove two screws from the fuser assembly , and take the Heat Roller out. 3. T ake the halogen lamp out from the Heat Roller . Note When you[...]

  • Page 12

    Disassembly and Reassembly 3-6 Samsung Electronics 3-9 SMPS Board 1. Before you remove the SMPS board, you should remove: • Main Cover (see [3-1 Main Cover]) 2. Remove screws in the order of then remove the shield engine assembly . 3. Unplug connectors from the main board and connec - tors from SMPS, then remove the SMPS. Remove four screws from [...]

  • Page 13

    Disassembly and Reassembly 3-7 Samsung Electronics 3-10 Main Board and Sensor Board 1. Before you remove the main board, you should remove: • Main Cover (see [3-1 Main Cover]) • SMPS board (see [3-9 SMPS Board]) 2. Remove two screws from the main board and unplug all of connectors, then remove the board. 3. Release four snap-fits securing the i[...]

  • Page 14

    T roubleshooting 4-1 Samsung Electronics 4. T roubleshooting 4-1 How to use DCU 4-1-1 DCU Setup ......................................Page(4-2) 4-1-2 Code ................................................Page(4-2) 4-1-3 Self Diagnostic Mode ......................Page(4-3) 4-1-4 Self T est Button ................................ Page(4-4) 4-1-5 Paper[...]

  • Page 15

    T roubleshooting 4-2 Samsung Electronics 4-1 How to use DCU 4-1-1 DCU Setup Y ou can examine the malfunction of the printer . T o perform DCU, open the front discharge cover and leave the connect the harness wire(10 pin/4 pin) to the CN10(4 pin) of the Main control board. 4-1-2 Code Connect DCU to the printer and turn the power on. It show 7 LED on[...]

  • Page 16

    T roubleshooting 4-3 Samsung Electronics 4-1-3 Self Diagnostic Mode If Error code occurs due to malfunction of the printer , perform Self Diagnostic Mode to solve the problem. The printer works only in the self-test mode to solve the malfunction problem. T o enter the self-test mode, turn the power on pressing the buttons of [Down], [Shift] and [St[...]

  • Page 17

    T roubleshooting 4-4 Samsung Electronics 13. THV(+) TRIGGER. ALL HV All high voltage output by each HV terminal and LSU and the fan is in operation. In this mode, electronic resistance of transfer roller and high voltage is detected. If no toner cartridge in the printer , output of THV is +199V ~ + 2100V . 14. PTL T est Indicates the PTL LED. 15. F[...]

  • Page 18

    T roubleshooting 4-5 Samsung Electronics 4-2 The cause and solution of Bad image 4-2-1 V ertical Black Line and Band • Description 1. Straight thin black vertical line occurs in the printing. 2. Dark black vertical band occur in the printing. Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Check and Cause Solution [...]

  • Page 19

    T roubleshooting 4-6 Samsung Electronics 4-2-3 Horizontal Black Band • Description 1. Dark or blurry horizontal stripes occur in the printing periodically . (They may not occur periodically .) Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Check and Cause Solution 1. Bad contacts of the voltage terminals to develo[...]

  • Page 20

    T roubleshooting 4-7 Samsung Electronics 4-2-5 Light Image • Description The printed image is light, with no ghost. Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Check and Cause Solution 1. Develop roller is stained when the toner of developer cartridge is almost con- sumed. 2. Ambient temperature is below than 1[...]

  • Page 21

    T roubleshooting 4-8 Samsung Electronics 4-2-7 Uneven Density • Description Print density is uneven between left and right. Check and Cause Solution 1. The pressure force on the left and right springs of the transfer roller is not even, the springs are damaged, the transfer roller is improperly installed, or the trans- fer roller bushing or holde[...]

  • Page 22

    T roubleshooting 4-9 Samsung Electronics 4-2-9 Ghost (1) • Description Ghost occurs at 75 mm intervals of the OPC drum in the whole printing. Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer 75mm Check and Cause Solution 1. Bad contacts caused by contamination from toner particles between high voltag[...]

  • Page 23

    T roubleshooting 4-10 Samsung Electronics 4-2-1 1 Ghost (3) • Description White ghost occurs in the black image printing at 32mm intervals. Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer 32mm Check and Cause Solution 1. The life of the developer may be expired. 2. The abnormal voltage and bad conta[...]

  • Page 24

    T roubleshooting 4-11 Samsung Electronics 4-2-14 Satins on Back of Page • Description The back of the page is stained at 47mm intervals. Digital Digital Pri Digital Printer Digital Printer Digital Printer Check and Cause Solution 1. T ransfer roller is contaminated. 2. Pressure roller is contaminated. 1. Perform the OPC Cleaning Mode Print 2 or 3[...]

  • Page 25

    T roubleshooting 4-12 Samsung Electronics 4-3 The cause and solution of the bad discharge 4-3-1 Wrong Print Position • Description Printing begins at wrong position on the paper . Check and Cause Solution Wrong sense time caused by defective feed sensor actuator . Replace the defective actuator (Service Parts : Figure 8-16 , chapter 5) 4-3-2 JAM [...]

  • Page 26

    T roubleshooting 4-13 Samsung Electronics 4-3-4 JAM 2 • Description 1. Recording paper is jammed in front of or inside the fuser . 2. Recording paper is stuck in the discharge roller and in the fuser just after passing through the Actuator-Feed. EXIT 2 EXIT 1 CARTRIDGE CARTRIDGE PICK UP EXIT SENSOR FEED SEN LSU LSU JAM 2 Check and Cause Solution [...]

  • Page 27

    T roubleshooting 4-14 Samsung Electronics 4-3-5 Multi-Feeding • Description Multiple sheets of paper are fed at once. Check and Cause Solution 1. Solenoid malfunction(the solenoid does not work properly): Perform DCU mode : solenoid check 06. 2. Pad-Friction is contaminated with foreign matter .(oil...) 3. The face of paper is blended. 1. Replace[...]

  • Page 28

    T roubleshooting 4-15 Samsung Electronics 4-3-7 OPC • Description Paper is rolled up in the OPC. Check and Cause Solution 1. Paper is too much thin. 2. The face of paper is curled. 1. Recommend to use normal paper . 2. How to remove the rolled paper in the OPC. • Remove the paper while turning the OPC against the ongoing direction. • Clean fi[...]

  • Page 29

    T roubleshooting 4-16 Samsung Electronics 4-4 The cause and solution of the malfunction 4-4-1 All LEDs blinking (Fuser Error) • Description 1. All the lamps on the operator panel blink. 2. Gear of the fuser does not work and breaks away melt away . When printing, motor breaks away from its place due to defective fuser gear . Check and Cause Solut[...]

  • Page 30

    T roubleshooting 4-17 Samsung Electronics 4-4-3 Not function of the gear of the fuser due to melting away • Description The motor breaks away from its place due to gear melting away . Check and Cause Solution DCU Mode : Check if the Error States '60' '62' '68' occur . Check the operation of Fuser Erasing Lamp On/Of f[...]

  • Page 31

    T roubleshooting 4-18 Samsung Electronics 4-4-6 Cover Open • Description The ERROR lamp is on even when the print cover is closed. Check and Cause Solution 1. The hook lever in the top cover may be defective. 2. Check the connector and circuit of the cover switch department in the Main Control board. Perform DCU mode : If Error state '64&apo[...]

  • Page 32

    T roubleshooting 4-19 Samsung Electronics 4-4-9 Defective motor operation • Description Main motor is not driving when printing, and paper does not feed into the printer , resulting 'Jam 0'. Check and Cause Solution 1. Motor harness or sub PCB may be defective. 2. Perform DCU diagnostic code 00 and Check the motor operation. 1. Check th[...]

  • Page 33

    T roubleshooting 4-20 Samsung Electronics 4-4-1 1 V ertical Line Getting Curved • Description When printing, vertical line gets curved. Check and Cause Solution 1. If the supply of +24v is unstable in the Main Control board linking with LSU, check drive by DCU Mode: LSU Check -05- LSU Motor on. 1. Replace LSU. (Service Parts : Figure 13, chapter [...]

  • Page 34

    T roubleshooting 4-21 Samsung Electronics 4-5 T oner 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 T oner Cartridge Excessive exposure to direct light more than [...]

  • Page 35

    T roubleshooting 4-22 Samsung Electronics 4-5-4 Signs and Measures at Poor toner cartridge Fault Signs Cause & Check Solution Light image and partially blank image (The life is ended.) T oner Contamination • The printed image is light or unclean and untidy . • Some part of the image is not print- ed. • Periodically a noise as "tick t[...]

  • Page 36

    T roubleshooting 4-23 Samsung Electronics Fault Signs Cause & Check Solution White Black spot Recycled product • Light or dark black dots on the image occur periodically . • White spots occur in the image period- ically . • Poor appearance of the developer . • Unclean and rough printouts. • Bad background in the image. 1. If light or [...]

  • Page 37

    T roubleshooting 4-24 Samsung Electronics Fault Signs Cause & Check Solution Ghost & Image Contamination • The printed image is too light or dark, or partially contami- nated black. • T otally contaminat- edblack. (Black image print- ed out) • The density of print- outs is too dark and ghost occurs. 1. The printed image is too light o[...]

  • Page 38

    T roubleshooting 4-25 Samsung Electronics 4-6 The cause and solutions of bad environment of the software 4-6-1 The printer is not working (1) • Description While Power turned on, the printer is not working in the printing mode. Check and Cause Solution 1. Run Self-T est Mode: T urn the power on while pressing the test printing button for 2 or 3 s[...]

  • Page 39

    T roubleshooting 4-26 Samsung Electronics 4-6-2 The printer is not working (2) • Description After receiving the printing order , no response at all or the low speed of printing occurs due to wrong setup of the environment rather than malfunction of the printer itself. Check and Cause Solution 1. Secure more space of the hard disk. 2. Printing er[...]

  • Page 40

    T roubleshooting 4-27 Samsung Electronics 4-6-3 Abnormal Printing • Description The printing is not working properly even when the cable has no problem. (even after the cable is replaced) If the printer won't work at all or the strange fonts are repeated, the printer driver may be defec - tive or wrong setup in the CMOS Setup. Check and Caus[...]

  • Page 41

    T roubleshooting 4-28 Samsung Electronics 4-6-4 SPOOL Error • Description T o spool which stands for "simultaneous peripheral operations online" a computer document or task list (or "job") is to read it in and store it, usually on a hard disk or larger storage medium so that it can be printed or otherwise processed at a more c[...]

  • Page 42

    • Deal drawings and service parts are declared for the items with higher rate of inferiority and replaceable in the level of service description only . • If inferiority occurs, you can replace the parts by the unit declared in deal drawings and service items. Exploded Views and Parts List 5-1 Samsung Electronics 5. Exploded V iews and Parts Lis[...]

  • Page 43

    O : Service available X : Service not available Exploded Views and Parts List 5-2 Samsung Electronics 5-1 Exploded Views and Parts List No. Description SEC.Code Q’ty SA Remark 1 ELA UNIT -CVR FRONT * 1 X 1-1 PBA SUB-LED P ANEL JC92-01280A 1 O 1-2 PMO-COVER FRONT refer to the table ⇒ 1O 1-3 CBF HARNESS-FRONT P ANEL JC39-001 12C 1 O 1-4 PMO-COVER[...]

  • Page 44

    Exploded Views and Parts List 5-3 Samsung Electronics 8-13 8-14 13 12 11 12-1 8 6 7 4 3 8-4-2 8-4-1 8-4 10 9 5 8-12 8-17 8-16 8-25 8-29 8-28 8-10 8-15 8-1 1 8-9 8-8 8-7 8-1 8-6 8-3 8-2 8-20 8-21 8-24 8-23 8-22 8-30 8-5 8-27 8-19 8-18 8-26 1-2 1-2’ 1-7 ML-1210 / ML-1250 ML-1220M 1-1 2 1 1-2 1-5 1-6 1-4 1-3 M L - 1 2 1 0 / 1 2 5 0 M L - 1 2 2 0 M M[...]

  • Page 45

    Exploded Views and Parts List 5-4 Samsung Electronics 5-2 Front Assembly SAMSUNG SAMSUNG 0 0 ’ 2 2 2 ’ 10 8 6 1 10 4 5 3 11 7 12 9 SAMSUNG 13 ML-1210 / ML-1250 ML-1210 / ML-1250 ML-1220M ML-1220M NO DESCRIPTION 0 ELA HOU-COVER FRONT ELA HOU-COVER FRONT 1 CBF-HARNESS-P ANEL MAIN 2 PMO-COVER FRONT 3 PMO-GUIDE ST ACKER 4 PMO-DOOR FACE UP 5 PPR-SHE[...]

  • Page 46

    Exploded Views and Parts List 5-5 Samsung Electronics 5-3 Engine/Frame Lower Assembly 2-17 2-3-2 2-3-1 2-7 2-7-3 2-7-1 2-7-2 2-9-1 2-9-2 2-9-4 2-9-3 2-8 2-9 2-10 3-3 3-3-1 3-2-3 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 3-8 3-7 3-[...]

  • Page 47

    Exploded Views and Parts List 5-6 Samsung Electronics 5-4 Fuser Assembly 15 15-2 15-1 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 NO DESCRIPTION 0 ELA HOU-FUSER ASS ’ Y 1 THERMISTOR-NTC 2 THERMOST A T-150C 3 LAMP-HALOGEN 4 PMO-COVER FUSER 5 PMO-BUSHING H/R, L 6 PMO-BUSHING H/R, R[...]

  • Page 48

    Exploded Views and Parts List 5-7 Samsung Electronics 5-5 Shield Engine Unit Assembly 1-2 1 1-1 3 S-1 2 0 S-2 S-3 NO DESCRIPTION 0 ELA HOU-SHIELD ENGINE 1 MEC-SHIELD BRKT CONTROLLER 1-1 IPR-SHIELD ENGINE 1-2 IPR-BRKT CONTROLLER 2 PCT -INSULA TOR SMPS 3 CBF HARNESS-INLET ASS ’ Y S-1 SCREW-MACHINE S-2 SCREW-T APTITE S-3 SCREW-T APTITE[...]

  • Page 49

    Exploded Views and Parts List 5-8 Samsung Electronics 5-6 RX Drive Assembly NO DESCRIPTION 0 ELA HOU-RX DRIVE 1 MOTOR-STEP 2 PMO-GEAR_71/28 3 PMO-GEAR_73/22 4 PMO-GEAR_132/19 5 IPR-BRKT_MOTOR 6 IPR-BRKT_GEAR 7 CBF-HARNESS_MOTOR S-7 SCREW-MACHINE 5-7 Plate-Upper Unit Assembly 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 NO DESCRIPTION 0[...]

  • Page 50

    Block Diagram 6-1 Samsung Electronics 6. Block Diagram 6-1. Block Diagram(GDI) MA I N S3C 46M 0X SD RAM (8 M B ) SM P S En g i n e PA N E L B' D FL AS H MEM O RY (0. 5 M B ) PO W E R CO R D +2 4V MOT O R FA N EX I T SE N SO R HV P S B' D MHV OPC G N D SU P PL Y DE V TH V BU F F ER MH V P W M BI ASP W M THV P W M PO WE R SW IT C H IN - L E[...]

  • Page 51

    Block Diagram 6-2 Samsung Electronics 6-2. Block Diagram(PCL) MA I N S Option Up to 68MB DR A M (4 (2MB) MB ) LS U En g i n e PA N EL B' D FL AS H MEM O RY PO W E R CO R D +2 4V MOT O R SO L EN O I D FA N EX I T SE N SO R HV P S B' D MHV OPC G N D SU P PL Y DE V TH V MH V P W M BI ASP W M THV PWM POWER SWITCH LE D 4 3 KEY IE E E 12 84 C A[...]

  • Page 52

    Connection Diagram 7-1 Samsung Electronics 7. Connection Diagram 7-1. Connection Diagram(GDI) 1 2 3 4 5 6 7 8 9 10 11 1 2 3 4 5 1 2 3 4 5 6 +2 4V _ T +2 4V GND *P MOTO R +3 . 3V EX T _CLK *H S Y N C +5 V +5 V GND *L D _ O N VD O +5 V G N D LSU POL Y G ON MO T O R LD D I O D E +5 V +5 V G ND LE D _ E RROR LE D _P A P E R LE D _D AT A LE D _T O N E R[...]

  • Page 53

    Connection Diagram 7-2 Samsung Electronics 7-2. Connection Diagram(PCL) 1 2 3 4 5 6 7 8 9 10 11 +2 4V _ SLEEP +2 4V GND * P LREADY* MOT O R EX T _ C L K * HS Y NC +5 V +5 V GND * LD_ ON VD O +5 V G N D LSU POL Y G ON MO T O R LD D I O D E +5 V +5 V G ND KEY_TONER* KEY_CANCEL* KEY_DEMO* 1 2 3 4 5 6 7 8 9 LE D DIS P L A Y PA N E L 1 2 3 4 5 6 7 8 9 +[...]

  • Page 54

    Repair Manual Repair Manual 1. Block Diagram 2. Connection Diagram 3. Schematic Diagrams CONTENTS LASER PRINTER ML-1200 Series[...]

  • Page 55

    1 1-1 Samsung Electronics BLOCK DIA GRAM Repair Manual 1. Bloc k Dia gr am 1.1 GDI Block Diagram(ML-1210/ML-1220M) MA I N S3C46M 0X SD RAM (8 M B ) SM P S En g i n e PA N EL B' D FL AS H MEM O RY (0. 5 M B ) PO W ER CO R D +2 4 V MOT O R FA N EX I T SE N SO R HV P S B' D MHV OPC G N D SU P PL Y DE V TH V BU F F ER MH V P W M BI ASP W M TH[...]

  • Page 56

    1-2 BLOCK DIA GRAM Samsung Electronics Repair Manual MA I N S Option Up to 68MB DR A M (4 (2MB) MB ) LS U En g i n e PA N EL B' D FL AS H MEM O RY PO W ER CO R D +2 4 V MOT O R SO L EN O I D FA N EX I T SE N SO R HV P S B' D MHV OPC G N D SU P PL Y DE V TH V MH V P W M BI ASP W M THV PWM POWER SWITCH LE D 4 3 KEY IEE E 12 84 C A B LE Osci[...]

  • Page 57

    2 2-1 Samsung Electronics CONNECTION DIAGRAM Repair Manual 2. Connection Dia gr am 2.1 GDI Connection Diagram(ML-1210/ML-1220M) 1 2 3 4 5 6 7 8 9 10 11 1 2 3 4 5 1 2 3 4 5 6 +2 4V _ T +2 4V GND *P M OT O R +3 . 3V EX T _ C LK *H S Y N C +5 V +5 V GND *L D _ O N VD O +5 V G N D LSU POL Y G ON MO T O R LD D I O D E +5 V +5 V G N D L E D _ E RROR LE D[...]

  • Page 58

    2-2 CONNECTION DIAGRAM Samsung Electronics Repair Manual 1 2 3 4 5 6 7 8 9 10 11 +2 4 V _ SLEEP +2 4V GND * P LREADY* MOT O R EX T _ C LK * HS Y NC +5 V +5 V GND * LD_ ON VD O +5 V G N D LSU POL Y G ON MO T O R LD D I O D E +5 V +5 V G ND KEY_TONER* KEY_CANCEL* KEY_DEMO* 1 2 3 4 5 6 7 8 9 LE D DIS P L A Y PA N E L 1 2 3 4 5 6 7 8 9 +5 V PT L PT L L[...]

  • Page 59

    3 3-1 Samsung Electronics SCHEMA TIC DIAGRAMS Repair Manual 3. Schema tic Dia gr ams 3.1 GDI Main Circuit Diagram (1/5)[...]

  • Page 60

    3-2 SCHEMA TIC DIAGRAMS Samsung Electronics Repair Manual Main Circuit Diagram (2/5)[...]

  • Page 61

    3-3 Samsung Electronics SCHEMA TIC DIAGRAMS Repair Manual Main Circuit Diagram (3/5)[...]

  • Page 62

    3-4 SCHEMA TIC DIAGRAMS Samsung Electronics Repair Manual Main Circuit Diagram (4/5)[...]

  • Page 63

    3-5 Samsung Electronics SCHEMA TIC DIAGRAMS Repair Manual Main Circuit Diagram (5/5)[...]

  • Page 64

    3-6 SCHEMA TIC DIAGRAMS Samsung Electronics Repair Manual 3.2 PC L Main Circuit Diagram (1/9)[...]

  • Page 65

    3-7 Samsung Electronics SCHEMA TIC DIAGRAMS Repair Manual PC L Main Circuit Diagram (2/9)[...]

  • Page 66

    3-8 SCHEMA TIC DIAGRAMS Samsung Electronics Repair Manual PC L M a i n Circuit Diagram (3/9)[...]

  • Page 67

    3-9 Samsung Electronics SCHEMA TIC DIAGRAMS Repair Manual PC L Main Circuit Diagram (4/9)[...]

  • Page 68

    3-10 SCHEMA TIC DIAGRAMS Samsung Electronics Repair Manual PC L M ainCircuit Diagram (5/9)[...]

  • Page 69

    3-11 Samsung Electronics SCHEMA TIC DIAGRAMS Repair Manual PC L Main Circuit Diagram (6/9)[...]

  • Page 70

    3-12 SCHEMA TIC DIAGRAMS Samsung Electronics Repair Manual PC L M a i n Circuit Diagram (7/9)[...]

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    3-13 Samsung Electronics SCHEMA TIC DIAGRAMS Repair Manual PC L M a i n Circuit Diagram (8/9)[...]

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    3-14 SCHEMA TIC DIAGRAMS Samsung Electronics Repair Manual PC L M a i n Circuit Diagram (9/9)[...]

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    3-15 Samsung Electronics SCHEMA TIC DIAGRAMS Repair Manual 5V 18V 24VS 24VS 18V 24VS 5V SAMSUNG ELECTRONICS TITLE REF . NO DA TE 01/01/04 1.0 1 OF 2 DESIGNED CHECKED REV . APPRO VED DRW . NO SIZE A4 SW ALLOW -HVPS CN1-#6 U2-B CN1-#7 U2-A JH.CHO IN GND OUT U3 KA7818 7407 7407 JC R422 5.6K R411 2.2K R401 100 Q401 A708-Y R412 2K R403 110KF VR401 50K R[...]

  • Page 74

    3-16 SCHEMA TIC DIAGRAMS Samsung Electronics Repair Manual 5V 18V 24VS 18V 18V 18V 24VS 24VS D-GND CN1-#5 CN1-#4 CN1-#8 TITLE DRW . NO REF . NO SIZE A4 DA TE 01/01/04 SW ALLOW -HVPS REV . 1.0 2 OF 2 DESIGNED CHECKED APPROVED SAMSUNG ELECTRONICS CN1-#3 7407 JH.CHO U2-F U2-E 7407 7407 JC R205 1K R206 100 Q203 A708-Y R207 2K R208 30KF R209 110KF VR201[...]

  • Page 75

    3-17 Samsung Electronics SCHEMA TIC DIAGRAMS Repair Manual +24V 1.8A +5V 1.0A GND NO MARKING RESISTOR 1/4W -J (5%) 1 3 5 6 11 10 7 12 GND CN5-14 CN5-13,15 CN5-16 EER2828 +5V +24VS GND GND 1 2 17 4 9 6 3 18 15 5 16 12 7 14 8 13 1A 1B 2A 2B PHASE1 +ENABLE1 RC1 SENSE1 E1 VREF GND E2 SENSE2 RC2 VCC VBB U1 A2918SWH 11 5 PHASE2 +ENABLE2 CN2 35303-0450 +5[...]

  • Page 76

    3-18 SCHEMA TIC DIAGRAMS Samsung Electronics Repair Manual +24V 1.8A +5V 1.0A GND NO MARKING RESISTOR 1/4W -J (5%) 1 3 5 6 11 10 7 12 GND CN5-14 CN5-13,15 CN5-16 EER2828 +5V +24VS GND GND 1 2 17 4 9 6 3 18 15 5 16 12 7 14 8 13 1A 1B 2A 2B PHASE1 +ENABLE1 RC1 SENSE1 E1 VREF GND E2 SENSE2 RC2 VCC VBB U1 A2918SWH 11 5 PHASE2 +ENABLE2 CN2 35303-0450 +5[...]

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    3-19 Samsung Electronics SCHEMA TIC DIAGRAMS Repair Manual 3.5 Panel Circuit Diagram[...]

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    [...]

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    Samsung Electronics Digital Printing CS Group Copyright (c) 2001. 10 This manual is made and described centering around circuit diagram and circuit description needed in the repair center in the form of appendix.[...]

  • Page 80

    Contents Samsung Electronics CONTENTS 1. Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page(1-1) 1-1 Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page(1-1) 1-2 Precautions on Disassembly and Reassembly . . . . . . . . . . . . . . .page(1-1) 1-3 T ools f[...]