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Samsung ML-4500/XAA Service Manual
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Samsung ML-4500/XAA Service Manual

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SERVICE
LASER PRINTER
LASER PRINTER
ML-4500/XAA
ML-4500/XAC
Manual
6. Electrical Parts List
8. Connection Diagrams
CONTENTS

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Summary of Contents for Samsung ML-4500/XAA

  • Page 1: Table Of Contents

    LASER PRINTER ML-4500/XAA ML-4500/XAC SERVICE 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.Schemaic Dagrams...
  • Page 2 ELECTRONICS © Samsung Electronics Co.,Ltd. August 2000 Printed in Korea. VERSION NO. : 1.00 P/N.: JC-0011A...

  • Page 3: Precautions

    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. Samsung Electronics...
  • Page 4 2. Be sure to replace the battery with the same or equivalent type recommended by the manufacturer. Samsung Electronics...

  • Page 5: Specifications

    AC 220V ~ 240V ± 15% 50/60Hz ± 3Hz Power Consumption Avg. 180Wh Power Saving Consumption Avg. 10Wh Sleep Mode Certification & Compliance FCC, C-UL, CE, CB,TUV Acoustic Noise Stand-by : Less than 35dB Sleep Mode : Less than 29dB Operating : Less than 50dB Samsung Electronics...
  • Page 6 PC driver (Only ML-4500) . Toner Supply Method : Exchanging Toner Cartridge . New Developer Checkable . Transfer System : Conductive Roller Transfer . Fusing System : Temperature & Pressure . OZONE Emission : Max. 0.1 PPM(8 Hours) Samsung Electronics...
  • Page 7 .The temperature is too high. 240 ~ 250 ° C (The thermostat cuts off the Fuser Overheat Sensing from the power.) Thermistor Open Sensing : Without the initial temperature change of the Fuser Samsung Electronics...
  • Page 8 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 Samsung Electronics...

  • Page 9: Disassembly And Reassembly

    Many of the parts are held in place with plastic latches. The latches break easily; release them care- fully. To remove such parts, press the hook end of the latch away from the part to which it is latched. Samsung Electronics...
  • Page 10 2. Remove the one screw to release the stopper 4. Unplug the connector connecting the OPE cover securing the cover to the main body. to the main body and remove the cover. Samsung Electronics...
  • Page 11 3-3 OPE Board 3. Remove the LED. 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. 4. Remove the PCB from the cover PCB. Samsung Electronics...
  • Page 12 1. Before you remove the top cover, you should remove: – OPE cover (see page 3-2) Paper guides – 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. Samsung Electronics...
  • Page 13 1. Before you remove the paper tray, you should remove: – OPE cover (see page 3-2) – 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. Samsung Electronics...
  • Page 14 – 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. Samsung Electronics...
  • Page 15 – 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. Samsung Electronics...
  • Page 16 Note: When you reassemble the pick-up roller, make sure that the right end of the pick-up roller fits into the pick-up gear shaft. 3. Remove the four screws securing the plate and remove the plate as shown below. Pick-up gear shaft Samsung Electronics...
  • Page 17 – 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. Samsung Electronics...
  • Page 18 – 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. 3-10 Samsung Electronics...
  • Page 19 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. Samsung Electronics 3-11...
  • Page 20 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. 3-12 Samsung Electronics...
  • Page 21 – 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. Samsung Electronics 3-13...
  • Page 22 2. Remove the two ground screws and unplug the one connector as shown in the figure. 3. Remove the one screw and unlatch the fuser ass’y using a proper tool as shown in the figure, then remove the fuser ass’y. 3-14 Samsung Electronics...
  • Page 23 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. Samsung Electronics 3-15...
  • Page 24 3. Remove the halogen lamp from the heat roller. remove: – All covers (see page 3-2, 3-4, 3-5) – Fuser ass’y (see page 3-15) 2. On the fuser ass’y, remove the two screws, then remove the heat roller. 3-16 Samsung Electronics...
  • Page 25 – Fuser ass’y (see page 3-15) 2. On the fuser ass’y, remove the heat roller as described on page 3-17. 3. Unwrap the thermister wire as shown in the figure. 4. Remove the one screw, then remove the thermister. Samsung Electronics 3-17...
  • Page 26 – 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. 3-18 Samsung Electronics...
  • Page 27 1. Before you remove the sensor board, you should then remove the sensor board. remove: – Rear cover (see page 3-4) – Shield engine ass’y (see page 3-19) 2. Release four snap-fits securing the insulator engine board and remove the insulator engine board. Samsung Electronics 3-19...
  • Page 28 – Rear cover (see page 3-4) – Shield engine ass’y (see page 3-19) Feed sensor 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. Empty sensor 3-20 Samsung Electronics...
  • Page 29 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. Spring-clutch Clutch-feed Gear-feed 3. Rotate the pick-up bushing in the direction of arrow, then remove the the feed roller ass’y. Samsung Electronics 3-21...
  • Page 30 Disassembly and Reassembly MEMO 3-22 Samsung Electronics...
  • Page 31 •Black spot Charge Roller 37.7mm Black spot Supply Roller 26.8mm Horizontal density band Develope Roller 31.6mm Horizontal density band Transfer Roller 47.1mm Black side contamination/transfer fault Heat Roller 57.1mm Black spot, White spot Pressure Roller 56.5mm Black side contamination Samsung Electronics...

  • Page 32: Troubleshooting

    Displays when the paper leading edge stops between the feed sensor and the exit sensor. Paper Jam 2 Displays when the paper leading edge stops after the exit sensor. LSU Not Ready The LSU scanner motor is not ready or ‘Hsync’ signal is not output. Samsung Electronics...
  • Page 33 LEDs lights. If you set new CRU in the machine in this mode, the right LED lights. FEED & EXIT SENSOR TEST The feed & exit sensor also can be tested by the same method of the code ‘06’. Samsung Electronics...
  • Page 34 After warmed up, it is in ‘Ready’ state, and code ‘88’ is displayed in DCU. In this mode, the machine does all printing operation (demo page printing and printing the data from PC) without all sensor operating. If you diagnose the control board with malfunction printer engine, this mode is very useful. Samsung Electronics...
  • Page 35 OK after removing the obstacles? OK after Remove part on the paper replacing the LSU? path causing the trouble Any obstacles ON mirror lens of LSU and Replace the LSU laser path? Remove the obstacles. Samsung Electronics...
  • Page 36 LSU transit to High/Low the defective component when printing? 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 Samsung Electronics...
  • Page 37 This could occurrs when he power of LSU is low or the toner’s guarranty the density is low due to the obstacles on the window life -> Replace LSU or clean the window Replace the toner cartridge Samsung Electronics...
  • Page 38 HVPS works OK? Any obstacles on the Remove the obstacles gab between high voltage terminal and developer? Clean transfer roller Transfer roller and gear holder works OK? OK after replacing Replace the LSU LSU? Replace the developer Samsung Electronics...
  • Page 39 -> Repair or replace printing? the boards Replace LSU Is transfer voltage supplied Repair or replace HVPS (-1.55 KV)? Is the Hsync/ signal received Replace LSU in LSU? Transfer part’s contact is bad -> Repair or replace toner cartridge Samsung Electronics...
  • Page 40 Toner 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 4-10 Samsung Electronics...
  • Page 41 Toner over supply due to the Works adjustment fault of metering correctly after blade in developer replaced LSU? -> Replace developer The power of LSU is set high or internal problem -> Replace LSU or adjust voluem Samsung Electronics 4-11...
  • Page 42 /terminal after check Check Terminals or contacts and ’Guide-Deve Spring’ are misplaced Work OK? -> Repair or replace transfer roller etc. Internal blade or suppying part of the developer is defective -> Replace the toner cartridge 4-12 Samsung Electronics...
  • Page 43 HVPS Operating/storage There may be a problem in toner temperature is too low or layer control in toner cartridge not recommended -> Replace the developer paper used? Use the machine with recommended paper and at condition Samsung Electronics 4-13...
  • Page 44 P/R or H/R in fuser the paper -> Replace the -> Clean it or replace developer The problem occured Does the same since the obstacles problesm stuck to charge roller persist? -> Replace toner cartridge 4-14 Samsung Electronics...
  • Page 45 (37.7mm) -> Repair/replace HVPS, developer The OPC is damaged due to Heat roller is ruined the irregular transfer voltage -> Replace the roller of HVPS -> Repair/replace HVPS -> If the same problem persists, replace the developer Samsung Electronics 4-15...
  • Page 46 Troubleshooting Toner Contaminations on Back of Paper Transfer roller Clean the transfer roller is clear ? Paper path is Clean the paper path clear ? Clean the pressure roller 4-16 Samsung Electronics...
  • Page 47 Clean the TR holder, the TR gear, works properly? OPC roller gear and the transfer roller - Clean the contact point of transfer roller - Check the output of high voltage terminal and adjust or replace if required Samsung Electronics 4-17...
  • Page 48 - Check the output of high voltage terminal and adjust or replace if required. Is it regular interval of 75.4mm, 31.6mm Replace the toner cartidge or 37.7mm? Replace the fuser (50.2mm, 45.2mm or exit roller 4-18 Samsung Electronics...
  • Page 49 (Check the counter replace terminals, HVPS and replace it) Irregualrity of toner Bad images suppy from developer aroung the no image -> Repalce developer area? Light distortion due to the mirror ruined or LSU’s diffused reflection -> Replace LSU Samsung Electronics 4-19...
  • Page 50 Obstacles stuck on OPC’s D/R in developing unit has surface the defect -> Clean the OPC and -> Replace the developer machine or replace developer When putting in/out the developer, scratch is made -> Replace the developer 4-20 Samsung Electronics...
  • Page 51 Use the recommended film than 10 films into temporarily stops the MPF? and revolves? Other parts are touching the When multi-page OHP printng, fan and prevents it from less than 10 films are revolution guranteed. -> Check and repair Samsung Electronics 4-21...
  • Page 52 1.2~ 3.0mm? Replace the contol The paper used is too component on engine thick or contains too board much cotton in it -> Re-test with the Check any contact recommended paper problem in thermistor and repair 4-22 Samsung Electronics...
  • Page 53 -> Replace the boards Detect failure due to the Repair/replace the Remove the shortage board which detects top board or replace the board cover open or switch error -> Replace the board or switch Samsung Electronics 4-23...
  • Page 54 -> Replace the component or replace the SMPS The voltage of pin #208 of U5 Thermistor, connecting point or engine (CPU) on the Main board board defect -> Repair/replace the is about 2.3V when component/board printing? 4-24 Samsung Electronics...
  • Page 55 Switch them Does the Pull out the Paper end curled? extender pulled out? extender <Recommendation> Use the recommended Use the MPF for the thick and quality paper paper such as envelope and cardstock Samsung Electronics 4-25...
  • Page 56 Adjust the paper guides to fit the or sensitive paper to paper width is grounded Check static electricity? the shutter prevents feeding The force of springs pressing the developer is weak -> Check guide-DEVE Use the recommended paper 4-26 Samsung Electronics...
  • Page 57 B’D) Replace connector Check MAIN B’D CN9-3, Replace MAIN B’D P_MOTOR Signal Check MAIN B’D CN9-4, Replace LSU LREDADY Signal Check MAIN B’D CN9-9, Replace MAIN B’D LDON Signal Check MAIN B’D CN9-6, Replace LSU HSYNC Signal Samsung Electronics 4-27...
  • Page 58 Troubleshooting Memo 4-28 Samsung Electronics...

  • Page 59: Exploded Views And Parts List

    5. Exploded 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 Samsung Electronics...
  • Page 60 Exploded Views and Parts Lists 5-1 Main Exploded View 5-10 Samsung Electronics...
  • Page 61 ELA HOU-FRAME LOWER JC96-01756A 110V ELA HOU-FRAME LOWER JC96-01757A 220V ELA UNIT-DEVE SET CBF HARNESS-MAIN PANEL JC39-00112A CBF HARNESS-THERMISTOR JC39-00045A CBF HARNESS-MAIN_HVPS JC39-00109A CBF HARNESS-LSU JC39-00043A Indicate part is for electrical safety components O: Service available X: Service not available Samsung Electronics...
  • Page 62 Exploded Views and Parts Lists 5-2 Front Exploded View Samsung Electronics...
  • Page 63 ELA HOU-COVER FRONT JC96-01758A 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 PMO-COVER PCB PMO-STOPPER PMO-BRKT PUSH DEVE PBA SUB DISP-PANEL O: Service available X: Service not available Samsung Electronics...
  • Page 64 2-9-4 3-25 3-16 3-24 2-2-1 2-2-3 3-22 2-2-2 3-23 3-21 3-26 3-19 3-11 3-39 3-13 3-31 3-32 3-46 3-30 3-29 3-22 3-14 3-18 3-34 3-23 3-42 3-21 3-26 3-33 3-20 3-35 3-38 3-36 3-40 3-37 3-28 3-45 3-27 Samsung Electronics...
  • Page 65 2-11 MEC-SIDE PAD(R) JC75-00051B 2-12 MEC-SIDE PAD(L) JC75-00050B 2-13 PMO-GEAR_TRANSFER JC72-00179A 2-14 PPR-SPACER DR 2-15 MEC-TRANSFER ROLLER JC75-00035A 2-16 MEC-TERMINAL JC75-00049A 2-16-1 TERMINAL 2-16-2 SPRING-HV APOLLO 2-17 PCT-INSULATOR ENG BD SCREW-TAPTITE O: Service available X: Service not available Samsung Electronics...
  • Page 66 3-14 PCT-FILM SAW 3-15 IPR-EARTH_TRANS 3-16 IPR-GROUND_GUIDE 3-17 IPR-GROUND_HVPS 3-18 IPR-GROUND_FUSER 3-19 IPR-GROUND_DRIVE 3-20 CBF HARNESS-OPE GND 3-21 PMO-HOLDER_PR 3-22 BEARING-PRESSUE R 3-23 SPRING-PR O: Service available X: Service not available Indicate part is for electrical safety components Samsung Electronics...
  • Page 67 PMO-HINGE FRONT(L) 3-42 PMO-HINGE FRONT(R) 3-43 PMO-COVER PTL 3-44 ELA HOU-PTL 3-45 PCT-INSULATOR SENSOR BD 3-46 PMO-FRONT FUSER 3-47 PCT-COVER SHEET LAMP SCREW-TAPTITE SCREW-TAPTITE Indicate part is for electrical safety components O: Service available X: Service not available Samsung Electronics...
  • Page 68 Exploded Views and Parts Lists 5-4 Fuser Exploded View 15-1 14-1 14-2 5-10 Samsung Electronics...
  • Page 69 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 Indicate part is for electrical safety components O: Service available X: Service not available Samsung Electronics 5-11...
  • Page 70 Exploded Views and Parts Lists 5-5 Shield Engine Unit Exploded View 5-12 Samsung Electronics...
  • Page 71 Description SEC. Code Q'ty Remark ELA HOU-SHIELD ENGINE MEC-SHIELD BRKT CONTROLLER IPR-SHIELD ENGINE IPR-BRKT CONTROLLER JC70-00131A PCT-INSULATOR SMPS JC72-00555A CBF HARNESS-SWITCH ASS’Y JC39-00117A CBF HARNESS-INLET ASS’Y JC39-00116A SCREW-MACHINE SCREW-TAPTITE SCREW-TAPTITE O: Service available X: Service not available Samsung Electronics 5-13...
  • Page 72 Exploded Views and Parts Lists 5-6 RX Drive Exploded View 5-14 Samsung Electronics...
  • Page 73 Exploded Views and Parts Lists RX Drive Parts Lists SA. : Service Available Location No. Description SEC. Code Q'ty Remark ELA HOU-RX DRIVE JC96-01755A MOTOR-STEP JC31-00005A PMO-GEAR_71/28 PMO-GEAR_73/22 PMO-GEAR_132/19 IPR-BRKT_MOTOR IPR-BRKT_GEAR CBF-HARNESS_MOTOR SCREW-MACHINE O: Service available X: Service not available Samsung Electronics 5-15...
  • Page 74 Exploded Views and Parts Lists 5-7 Plate-Upper Unit Exploded View 5-16 Samsung Electronics...
  • Page 75 SEC. Code Q'ty Remark MEC-PLATE UPPER JC75-00098A 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 O: Service available X: Service not available Samsung Electronics 5-17...
  • Page 76 Exploded Views and Parts Lists Memo 5-18 Samsung Electronics...

  • Page 77: Block Diagrams

    7. Block diagram Samsung Electronics...
  • Page 78 Block diagram Memo Samsung Electronics...

  • Page 79: Pcb Diagrams

    9. PCB Diagrams 9-1 Main PCB Diagram (Top) ML-4500 BAR CODE SMPS CN8 DCU CN10 KM416C1200BLJ-6 C35 R79 KM416C1200BLJ-6 C31 C105 KM93C66G C123 R106 R108 R109 R117 AM29F800B-70EC KS32C65100 OSC5 C126 R110 C116 C115 C124 74F1071SCX C118 Samsung Electronics...
  • Page 80 PCB Diagrams 9-2 Main PCB Diagram (Bottom) Samsung Electronics...
  • Page 81 PCB Diagrams 9-3 Engine PCB Diagram (TOP) DEV_FUSE TEA3718DP E B C E B C TEA3718DP E B C E B C MOTOR Samsung Electronics...
  • Page 82 PCB Diagrams 9-4 Engine PCB Diagram (Bottom) Samsung Electronics...
  • Page 83 +24VS SWITCH CN10 PTL LED ARRAY THERM_A THERMISTOR THERM_B GND5 GND5 GND5 +24V FUSER_ON GND24 *EXIT THVPWM UNUSED *THV_EA GND5 S M P S THVREAD H V P S GND24 *MHV GND24 BIASPWM GND24 +24VS GND5 +24V +24V Samsung Electronics...
  • Page 84 Connection diagram Memo Samsung Electronics...

  • Page 85: Schemaic Dagrams

    GND5 GND5 PAPER SENSOR CN1-1 *PEMPTY *FEED Engineer: SAMSUNG PRINTER DIV Drawn by: APOLLO R&D CHK: Size: TITLE: ML-4500 DOC CTRL CHK: MFG ENGR CHK: GND5 GND5 GND5 Drawing Number: DATE : 2000.04.14 REV: 0.2 Page: 1 Samsung Electronics 10-1...
  • Page 86 Drawn by: APOLLO THVPWM *MHV R&D CHK: Size: TITLE: R115 *FEED R114 *PEMPTY DOC CTRL CHK: ML-4500 PMOTOR EGMOT_PHA *EGMOT_B1 MFG ENGR CHK: EGMOT_PHB *EGMOT_B0 GND5 GND5 GND5 REV: Drawing Number: *EGMOT_A1 DATE : 2000.04.14 Page: 2 *EGMOT_A0 10-2 Samsung Electronics...
  • Page 87 10nF 100nF GND5 GND5 GND5 GND5 Engineer: SAMSUNG RB420D T147 PRINTER DIV *WTD_OUT Drawn by: APOLLO R&D CHK: Size: TITLE: DOC CTRL CHK: ML-4500 MFG ENGR CHK: Drawing Number: REV: 0.2 DATE : 2000.04.14 Page: 3 GND5 Samsung Electronics 10-3...
  • Page 88 GND5 GND5 C130 100pF 22pF 22pF GND5 GND5 GND5 GND5 Engineer: SAMSUNG PRINTER DIV Drawn by: APOLLO R&D CHK: Size: TITLE: DOC CTRL CHK: ML-4500 MFG ENGR CHK: REV: 0.2 Drawing Number: DATE : 2000.04.14 Page: 4 10-4 Samsung Electronics...
  • Page 89 35301-0250 C133 100nF R131 C135 GND5 Engineer: SAMSUNG GND5 PRINTER DIV Drawn by: EXT_CLK APOLLO C136 R&D CHK: Size: TITLE: ML-4500 DOC CTRL CHK: MFG ENGR CHK: GND5 Drawing Number: REV: 0.2 DATE : 2000.04.14 Page: 5 Samsung Electronics 10-5...
  • Page 90 Address Drawn by City YUNIRI GND24 R&D CHK Size TITLE: GND5 DOC CTRL CHK APOLLO ENGINE MFG ENGR CHK Changed by Date Changed Time Changed QA CHK Drawing Number Sheet yichoi7 Saturday, May 29, 1999 9:32:33 am 10-6 Samsung Electronics...
  • Page 91 Schematic Diagrams 10-3 HVPS Circuit Diagram(1/2) Samsung Electronics 10-7...
  • Page 92 Schematic Diagrams HVPS Circuit Diagram(2/2) 10-8 Samsung Electronics...
  • Page 93 Schematic Diagrams 10-4 Panel Circuit Diagram Samsung Electronics 10-9...
  • Page 94 R522 PC501 CN503-3,4,5 1/2W LTV817M-B C510 1.5K 222MAD CN503-13 +24VS2 FUSER_ON CN503-6 NO MARKING RESISTOR 1/4W-J (5%) SCALE DROWING CHKD APVD TITLE SCHEMATIC UNIT J.S.YOUN MODEL NO APOLLO8-V1 DATE 00.03.22 REV NO DONGYANG INSTRUMENT IND.CO.,LTD. DWG NO 10-10 Samsung Electronics...
  • Page 95 R522 PC501 CN503-3,4,5 1/2W LTV817M-B C510 1.5K 332MAD CN503-13 +24VS2 FUSER_ON CN503-6 NO MARKING RESISTOR 1/4W-J (5%) SCALE CHKD APVD TITLE SCHEMATIC DROWING UNIT J.S.YOUN MODEL NO APOLLO8-V2 DATE 00.03.22 REV NO DONGYANG INSTRUMENT IND.CO.,LTD. DWG NO Samsung Electronics 10-11...

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Ml-4500/xac