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Samsung ML-920 Service Manual

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SERVICE
Digital Laser MFP
Digital Laser MFP
SF-830/SF-835P
Msys830/Msys835P
ML-920
MANUAL
1. Precautions
2. Specifications
3. Disassembly
4. Troubleshooting
5. Exploded Views and Parts List
6. Block Diagram
7. Connection Diagram
8. Dual Line Option
Contents

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Summary of Contents for Samsung ML-920

  • Page 1 Digital Laser MFP SF-830/SF-835P Msys830/Msys835P ML-920 SERVICE MANUAL Contents Digital Laser MFP 1. Precautions 2. Specifications 3. Disassembly 4. Troubleshooting 5. Exploded Views and Parts List 6. Block Diagram 7. Connection Diagram 8. Dual Line Option...
  • Page 2 ITSELF system Samsung Electronics Co., Ltd. VERSION NO. : 1.01 CODE : JC-0069A “http://itself.sec.samsung.co.kr” - This Service Manual is a property of Samsung Electronics Co.,Ltd. Any unauthorized use of Manual can be punished under applicable International and/or domestic law. -...
  • Page 3 Copyright Act. Specifications are subject to change without prior notice. Samsung Electronics Digital Printing CS Group Copyright (c) 2002. 6.

  • Page 4: Table Of Contents

    3-14 SMPS ....................... page(3-15) 3-15 LSU ........................page(3-16) 3-16 Main Frame Ass'y..................... page(3-17) • Cover Exit Rear ........................page(3-18) • MP Ass'y ..........................page(3-19) • Feed Ass'y ........................page(3-20) • Pick Up Ass'y ........................page(3-20) • Main PBA ..........................page(3-21) 3-17 SCF Ass’y ......................page(3-22) Samsung Electronics...
  • Page 5 • Paper Jam(Jam 1)......................page(4-36) • Engine Error........................page(4-37) 4-7-3 Toner Cartridge and Drum Cartridge Service ..........page(4-38) 4-7-3-1 Signs and Measures at Poor toner cartridge .......... page(4-39) 4-7-4 The cause and solutions of bad environment of the software ...... page(4-42) Samsung Electronics...
  • Page 6 8-3 Dual Line Board Connector Pin Assignment ............page(8-2) 8-4 Troubleshooting of Dual Line Board ..............page(8-3) 8-4-1 Troubleshooting Flow Chart ................page(8-3) 8-4-2 Dual Line Board error..................page(8-3) 8-4-3 Modem interface error................... page(8-4) 8-4-4 LIU interface error ..................page(8-5) Samsung Electronics...

  • Page 7: Precautions

    6. Observe the original lead dress, especially near sharp edges, AC, and high voltage power sup- plies. 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 8: Esd Precautions

    2. Be sure to replace the battery with the same or 4. Dispose of used batteries according to the manu- equivalent type recommended by the manufac- facture’s instructions. turer. Samsung Electronics...

  • Page 9: Tools For Troubleshooting

    Cotton Swab Standard: Equipment to check the weight of consum- Standard: For general home use, for medical service. ables(toner cartridge) supplied by Samsung Electron- ics. (The gram unit can be measured.) Cleaning Equipments a IPA(Isopropyl Alcohol)dry cloth or a soft stuff neutral detergent.

  • Page 10: Specifications

    Recommended System Requirement Pentium II 233 Mhz, 64 MB RAM, 120MB(Hard Disk) Minimum System Requirement Pentium II 400Mhz, 128 MB RAM, 220MB(Hard Disk) 16 characters X 2 lines Memory 4 Mbyte for flash Memory , 20 Mbyte for DRAM Samsung Electronics...

  • Page 11: Printer Specifications (Sf-835P Only)

    Data coding(Compression) MH/MR/MMR/JBIG(Transmission) Modem speed 33600/28800/14400/12000/9600/7200/4800/2400 bps Transmission Speed Approximately 3 sec(33,600 bps) Effective Scanning Width 8.2 inches(208 mm) Halftone 256 Levels ADF(Automatic Document Feeder) : 50Sheets(75g/ß ≥ ) Paper Capacity(Input) FAX Mode Standard /Fine/Super Fine Memory 8 MB Samsung Electronics...

  • Page 12: Scanner Specification

    Plain , Legal , Cardstock , Transparency Zoom Range ADF : 25~200 %(1% Step) NOTE : (1) Speed claims based on the test chart : Letter size. SDMP : Single Document Multiple Printout MDSP : Multiple Document Single Printout Samsung Electronics...

  • Page 13: Telephone Specification

    Tone only user modeTone/Pulse selectable in tech mode. 2-7 Consumables Item Description Type Separate type (Toner Cartridge / Drum Cartridge) Life Toner Cartridge 6,000 sheets ( 5% coverage pattern, simplex normal mode ) Drum Cartridge 15,000 sheets (simplex normal mode ) Samsung Electronics...

  • Page 14: Disassembly And Reassembly

    2. Unplug the power cord. 3. Use a flat and clean surface. 4. Replace only with authorized components. 5. Do not force to remove or planten plastic-material components. 6. Make sure all components are in their proper position. Samsung Electronics...

  • Page 15: Cover Rear Ass'y

    1. Open the Side cover. 2. Remove he four screws securing the Cover Rear Ass’y. Cover Rear Ass’y 3-3 Rear Cover 1. Remove the six screws securing the Rear Cover. 2. Separate the Rear Cover from the Base Frame and Scanner Ass'y. Samsung Electronics...

  • Page 16: Scanner Ass'y

    2. Remove the six screws and take out the Shield Main Upper. 5. Unplug the one connector from the Main Board and remove two screws. 3. Remove the three screws, as shown below. 6. Pull up the Scanner Ass'y in the direction of arrow. Samsung Electronics...

  • Page 17: Ope Ass'y

    2. Remove the two screws securing the Scanner Ass'y. 3. Pull the OPE Ass'y as shown below. 6. Remove the Contact Rubber from the unit. 4. Unplug the two connector from the OPE Ass'y. 7. Remove the Key Pad from the unit. Samsung Electronics...

  • Page 18: Adf Upper Ass'y

    - Rear cover (see page 3-2) - Scanner Ass'y (see page 3-3) - OPE Ass'y (see page 3-4) Cover Gear Link Tray 2. Open the ADF Upper Ass'y. 4. Remove the ADF Upper Ass'y, as shown below. ADF Upper Ass’y Samsung Electronics...

  • Page 19: Guide Lower Ass'y

    5. Take out the Housing Upper ADF, as shown below. Housing Upper ADF 3. Push the part to the arrow direction (to the inner), unlatch the part to the arrow direction and remove Guide Lower Ass'y. Guide Lower Ass’y Samsung Electronics...

  • Page 20: Housing Lower Ass'y

    5. Unlatch the Scan Roller gear part and remove it, as shown below. Scan Roller 6. Unlatch the ADF Roller gear part and remove it, 3. Remove the seven screws securing the ADF as shown below. Lower Ass'y. ADF Roller Samsung Electronics...
  • Page 21 11. Unlatch the Cover Switch and remove it, as Take out the CIS Ass'y. shown below. Cover Switch CIS Ass’y 12. Unlatch the both side and remove the Scan 9. Remove the one screw securing the CIS Bracket Board. and take out the CIS. CIS Bracket Samsung Electronics...

  • Page 22: Side Cover Ass'y Page

    Tray-Case from the Tray Link. The Tray Link (inner side) locates at an angle of 45˚ from the Side Cover Ass’y and then remove the Tray Link. MP Tray Tray Link Tray-Case Samsung Electronics...

  • Page 23: Transfer Roller Ass'y

    1. Unite the part and home to the projection 1. Take out the Transfer Roller, as shown below. part of the Side Cover assembly, and widen them from each other to dissemble the Side Cover Ass’y. Deplex Ass’y 3-10 Samsung Electronics...

  • Page 24: Fuser Ass'y

    3. Unplug the one connector. 7. After remove the two screw and open the Lower Ass’y froward tack out the Heat Roller Ass’y from Upper Fuser Ass’y. 4. Remove the three screws and take out the Fuser Ass'y. Heat Roller Samsung Electronics 3-11...

  • Page 25: Exit Ass'y

    - Rear Cover (see page 3-2) - Cover Rear Ass’y (see page 3-2) - Scanner Ass'y (see page 3-3) - Side Cover Ass'y (see page 3-9) 2. Remove three screws, unplug four connectors and unlatch the Dummy Base Frame, as shown below. 3-12 Samsung Electronics...

  • Page 26: Cover Paper Exit Ass'y

    1. Before you remove the Cover Paper Exit Ass'y, 2. Remove two screws and Cover Paper Exit Ass'y, you should remove: as shown below. - Rear Cover (see page 3-2) - Cover Rear Ass’y (see page3-2) - Scanner Ass'y (see page3-3) Cover Paper Exit Ass’y Samsung Electronics 3-13...

  • Page 27: Drive Ass'y

    - Rear Cover (see page 3-2) - Shield Main Upper (see page 3-2) 2. Unplug the two connectors. (Main Motor:9pin, Duplex Solenoid : 2pin) Dust Fan 4. Remove the five screws and take out the Drive Ass'y. Drive Ass’y 3-14 Samsung Electronics...

  • Page 28: Smps

    - Side Cover Ass'y (see page 3-9) - Exit Ass'y (see page 3-12) - Cover Paper Exit Ass'y (see page 3-13) 2. Remove three screws and take out the Shield SMPS Upper. 4. Remove the SMPS, as shown below. SMPS Samsung Electronics 3-15...

  • Page 29: Lsu

    - Rear Cover (see page 3-2) - Cover Rear Ass’y (see page 3-2) - Scanner Ass'y (see page 3-3) - Side Cover Ass'y (see page 3-9) - Exit Ass'y (see page 3-12) 2. Unplug the two connectors. 3-16 Samsung Electronics...

  • Page 30: Main Frame Ass'y

    Dummy Scan Lower. Dummy Base Frame Cam Jam Remove 5. Remove the seven screws and take out the Main Frame Ass'y. Main Frame Ass’y Front Cover 3. Remove the Locker Deve. Cover Motor Bracket Lock Deve Samsung Electronics 3-17...

  • Page 31: Cover Exit Rear

    Disassembly and Reassembly * Cover Exit Rear 1. Remove the one screw and take out the Panel 2. Remove the one screw and Cover Exit Rear, as Connect MPF. shown below. Cover Exit Rear 3-18 Samsung Electronics...

  • Page 32: Mp Ass'y

    Disassembly and Reassembly * MP Ass'y 1. Unplug the two connectors. 3. Release the SMPS fit. Pull the MP Ass'y Upward and remove it. MP Ass’y 2. Remove the four screws and take out the Dummy Cover. Dummy Cover Samsung Electronics 3-19...

  • Page 33: Feed Ass'y

    1. Unplug the three connectors. 3. Remove the four screws and take out the Pick Up Ass'y, as shown below. 2. Remove the two screws and take out the Cas- sette Rail. Guide Paper Out Pick-up Ass’y Cassette Rail 3-20 Samsung Electronics...

  • Page 34: Main Pba

    2. Remove the five screws and take out the Main Main Lower. PBA from the Shield Main Lower. Main PBA Shield Main Lower 3. Remove the one screw and unlatch the LIU PBA securing the Main PBA and remove it. LIU PBA Main PBA Samsung Electronics 3-21...

  • Page 35: Scf Ass'y

    5. Unplug the one connector from the Main PBA, as shown below. 3. Remove the nine screws securing the Top Cover and remove it. 6. Remove the two screws securing the Guide Paper Upper and remove it. 3-22 Samsung Electronics...
  • Page 36 8P Harness 9. Remove the two screws securing the Motor 12. Remove the one screw securing the Ground Ass'y and remove it. Cable. Remove the Ground Cable frome the Plate Ground. Motor Ass’y Samsung Electronics 3-23...
  • Page 37 15. Remove the four screws securing the Main Ground and remove it, as shown below. PBA and remove it. Plate Ground 14. Remove the four HV Shaft and HV Spring, as shown below. HV Shaft HV Spring 3-24 Samsung Electronics...

  • Page 38: Maintenance & Troubleshooting

    The cycle period given below is for reference only. COMPONENT REPLACEMENT CYCLE ADF Rubber 20,000 Pages ADF Roller 50,000 Pages Pick-up Roller 75,000 Pages Transfer Roller 75,000 Pages Fuser 75,000 Pages Toner Cartridge 6,000 Pages Drum Cartridge 15,000 Pages Samsung Electronics...

  • Page 39: Error Messages

    15000 print pages. NO CARTRIDGE When the machine detected the toner cartridge has Install the Cartridge. not been installed. BYPASS JAM When the machine detected the non-feeding from Open the side Cover and clear the jam. BYPASS Tray. Samsung Electronics...
  • Page 40 Thermister does not connected to main board or con- Check thermister contact point, Heating tact point is not coupled tightly in power on. Camp & Thermostat. Heating Error During operation, Temperature does not go up. Check thermister contact point & Heating Lamp. Samsung Electronics...

  • Page 41: User Mode

    DEPARTMENT CODE (Menu + One-touch15) TX CONFIRM (Menu + One-touch16) SCHEDULE JOB (Menu + One-touch17) PHONE BOOK (Menu + One-touch18) SYSTEM LIST (Menu + One-touch19) TX JOURNAL (Menu + One-touch20) RX JOURNAL (Menu + One-touch21) HELP LIST (Menu + One-touch22) HELP LIST Samsung Electronics...

  • Page 42: Tech Mode

    To return to normal user mode, press MENU, #, 1, 9, 3, 4 in sequence again, or turn the power off, then on by unplugging and plugging the power cord. Options changed while in service mode do not remain changed unless you clear the machine’s memory. Samsung Electronics...

  • Page 43: Setting-Up System In Tech Mode

    TX JOURNAL (Menu + One-touch20) The same as User Mode. RX JOURNAL (Menu + One-touch21) The same as User Mode. HELP LIST (Menu + One-touch22) MSG. CONFIRM SCHEDULE JOB PHONE BOOK SYSTEM DATA TRANSMISSION RECEPTION HELP LIST PROTOCOL ERROR CODE Samsung Electronics...

  • Page 44: System Data

    2. Push the ENTER button. 3. Select you country. 4. Push the ENTER button then it will be all memory clear. . NOTICE : Always perform the memory clear after replace the main board. Otherwise, the system may not operate properly. Samsung Electronics...

  • Page 45: Maintenance

    3. Always use a clean white paper in ADJUST SHADING (Maximum paper width: Letter Size). ADJUST SHADING may be performed even in the User Mode but ADJUST SHADING profile is output only in the TECH MODE. < ADJUST SHADING > Samsung Electronics...
  • Page 46 It is needed in the production progress. Service person doesn't need to use it. ROM TEST Use this feature to test the machine'S ROM. The result and the software version appear in the LCD display. • FLASH VER : 1.00 V • ENGINE VER :1.00V Samsung Electronics...
  • Page 47 PROGRAM DIAL It is a function setting transmitting conditions to transmit to specific address preliminary. When user transmit specific address set this function, the condition sapplied automatically. 4-10 Samsung Electronics...

  • Page 48: Report/Help

    It lists all telephone numbers that have been stored in the machine. SCHEDULE JOB This list shows a specific information on the documents currently stored for delayed transmission. It provides the operation number, starting time, type of operation, etc. ERROR CODE It shows error history occurred using product. Samsung Electronics 4-11...

  • Page 49: Firmware Upgrade

    1. sending and receiving fax must be the same model. 2. A sending fax must be set up as ECM mode, and a receiving memory must be set up as 100%. If not, the function operates abnormally. 4-12 Samsung Electronics...

  • Page 50: Identify Sale Date

    Method : Press MENU, #, 1, 9, 3, # in sequence.Firmware version is displayed on LCD. FLASH VER : 1.00 ENGINE VER : 1.00 Press 1( in the number keypad) : The LCD display shows "Updated date" Press 2( in the number keypad) : The LCD display shows "Product first use date" Samsung Electronics 4-13...

  • Page 51: Engine Test Mode

    When the function is on, sentence to explain the condition of engine is printed in the below section of the printing output. It is needed in the development progress. Service person doesn't need to use it.4-7 Troubleshooting 4-14 Samsung Electronics...

  • Page 52: Troubleshooting

    1. LSU light power normal? 1. Check the rated level and replace. 2. Bias voltage output is high? 2. Set to power rating. 3. Video data is always supplied? 3. Replace defected board. Digital Printer Digital Printer Samsung Electronics 4-15...
  • Page 53 2. The toner cartridge is out of position? 2. Checkand adjust. Partial blank image 1. Develope roller scar or particle. 1~2. Replace toner cartridge. (periodic) 2. Scar or particle. (94 mm) 3. Transfer roller scar or particle . 3. Replace transfer roller. (47 mm) 4-16 Samsung Electronics...

  • Page 54: Abnormal Image Printing And Defective Roller

    Supply Roller 35.8 mm Horizontal dark band Develope Roller 44.8 mm Horizontal dark band Transfer Roller 57.8 mm Black side contamination/transfer fault Heat Roller 82.5 mm Black spot, White spot Pressure Roller 69.1 mm Black side contamination Samsung Electronics 4-17...

  • Page 55: No Image

    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 defective matters in the machine Samsung Electronics 4-18...
  • Page 56 This could occurs when he power of LSU is low or life the density is low due to the obstacles on the window -> Replace LSU or clean the window Replace the toner cartridge 4-19 Samsung Electronics...

  • Page 57: All Black

    -> Repair or replace the boards Replace LSU Is charge voltage supplied Repair or replace HVPS from HVPS? Is the Hsync/ signal received Replace LSU in LSU? Charge part's contact is bad -> Repair or replace toner cartridge Samsung Electronics 4-20...

  • Page 58: Vertical White Line (Band)

    OPC of Check both if the toner cartridge's developer and LSU prevent the counter is over its guaranty and path -> Remove the obstacles amount of the toner material -> Replace the toner cartridge 4-21 Samsung Electronics...

  • Page 59: Dark Image

    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 volume Samsung Electronics 4-22...

  • Page 60: Background

    Check if the LED of PTL in front of the transfer roller is on when it presses the top cover switch on purpose -> If not, replace PTL Internal blade or supplying part of the developer is defective -> Replace the toner cartridge 4-23 Samsung Electronics...

  • Page 61: Ghost

    OK? (-300V) 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 4-24...

  • Page 62: Black Dot

    Check toner is stuck onto since the obstacles toner material dropped the P/R or H/R in fuser stuck to charge roller onto the paper -> -> Clean it or replace -> Clean the Charge Roller Replace the developer and then reprint. 4-25 Samsung Electronics...

  • Page 63: Horizontal Band

    (38mm) -> 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 4-26...

  • Page 64: Irregular Density

    Bad images Any obstacles supply from developer around the no image on the PTL lamp? -> Replace developer area? Light distortion due to Clean the window of PTL the mirror ruined or LSU's diffused reflection -> Replace LSU 4-27 Samsung Electronics...

  • Page 65: White Spot

    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 Samsung Electronics 4-28...

  • Page 66: Trembling At The End When Ohp Printing

    Other parts are touching the When multi-page OHP printng, fan and prevents it from less than 10 films are revolution guranteed. (Reduce the -> Check and repair number of films and re-insert after paper check LED if off) 4-29 Samsung Electronics...

  • Page 67: Poor Fusing Grade

    3 Kg) 3.5mm? Replace the control The paper used is too component on Main thick or contains too much cotton in it -> Re-test with the Check any contact recommended paper problem in thermistor and repair Samsung Electronics 4-30...

  • Page 68: Malfunction

    Clean around fuser. 2. Paper is curled in the exit cover?. 2. Check locking works wells. Watch whether the ribs of exit cover hace any burr or resisitive edge. If they do, remove obstacles or replace. 4-31 Samsung Electronics...
  • Page 69 1. Check whether the Reg. sensor is working or not. ADF. 2. Check whether the Feed Roller is working or not. Does it curl while coming out? 1. Check the Open Cover whether there are bosses. 2. Check the ADF ass'y is well assemble. Samsung Electronics 4-32...

  • Page 70: No Power (Lcd No Display Led Off)

    -> Replace the boards Detect failure due to the Repair/replace the Remove the shortage board which detects side board or replace the board cover open or switch error -> Replace the board or switch 4-33 Samsung Electronics...

  • Page 71: Fuser Error

    If not check the CN6 on the power board. The voltage of pin #60 of U51 Thermistor, connecting point or engine (CPU) on the Main PBA board defect -> Repair/replace the is about 2.65V when component/board printing? Samsung Electronics 4-34...

  • Page 72: Paper Jam (Mis-Feeding)

    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 4-35 Samsung Electronics...

  • Page 73: Paper Jam(Jam 1)

    Adjust the paper guides to fit the or sensitive paper to is grounded Check paper width static electricity? the shutter prevents feeding The force of springs pressing the developer is weak -> Check guide-DEVE Use the recommended paper Samsung Electronics 4-36...

  • Page 74: Engine Error

    (Main B'D to LSU) Check Main B'D CN1-9, Replace Main PBA P_MOTOR Signal Check Main B'D CN1-8, Replace LSU LREADY Signal Check Main B'D CN1-4, Replace Main PBA LDON Signal Check Main B'D CN1-1, Replace LSU HSYNC Signal 4-37 Samsung Electronics...

  • Page 75: Toner Cartridge And Drum Cartridge Service

    4-7-3 Toner Cartridge and Drum Cartridge Service It is not guaranteed for the default caused by using other toner and Drum Cartridge cartridge other than the cartridge supplied by the Samsung Electronic or caused by non-licensed refill production. Precautions on Safe-keeping of the Drum Cartridge Excessive exposure to direct light more than a few minutes may cause damage to the cartridge.

  • Page 76: Signs And Measures At Poor Toner Cartridge

    2. Check whether it could be recycled. contaminated with toner. (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. 4-39 Samsung Electronics...
  • Page 77 (contact point) of the cled over 2 times. developer. (2)If toner nearly being expired are col- (2)Check whether the state of the lected to use, it is judged as the recycled terminal assembly is normal. developer. Samsung Electronics 4-40...
  • Page 78 Clean the terminals of the nal(point of contact) of the charged roller, then recheck it. developer and the state of assembly. (Especially check the charged roller terminal.) 4-41 Samsung Electronics...

  • Page 79: The Cause And Solutions Of Bad Environment Of The Software

    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. Samsung Electronics 4-42...

  • Page 80: Abnormal Printing

    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. 4-43 Samsung Electronics...

  • Page 81: Exploded View & Parts List

    5. Exploded View & Parts List You can searc for the updated part code through ITSELF Web Site URL : http://itself.sec.samsung.co.kr 5-1 Main Exploded View & Parts List ........page(5-2) 5-2 Scanner Ass’y Exploded View & Parts List ......page(5-5) 5-3 ADF UpperAss’y Exploded View &...
  • Page 82 Exploded Views and Parts List Appendix information The following list shows different materials by model. The material codes mentioned in themanual are subject to change without prior notice. For the latest exact information, see ITSELF SYSTEM. (http://itself.sec.samsung.co.kr) •SF-835P/XAA •SF-830/XAA DESCRIPTION SEC.CODE...

  • Page 83: Main Exploded View & Parts List

    Exploded Views and Parts List 5-1. Main Exploded View & Parts List Samsung Electronics...
  • Page 84 JC70-00244A ASSY PBA SUB-LIU refer to info. PMO-DUMMY BASE FRAME JC72-00789A IPR-SHIELD MAIN LOWER JC70-00245A PMO-COVER FEED AY JC72-00801A PMO-COVER BRKT MOTER JC72-00834A PMO-GUIDE PAPER OUT JC72-00835A SHEET-CONNECTOR JC63-00072A O : Service available X : Service not available Samsung Electronics...
  • Page 85 MEA UNIT-HOLDER GND ASS’Y JC97-01574A 53-1 SPRING ETC-TR_R 53-2 PMO-BUSH 53-3 PMO-HOLDER GEAR TR MEA ETC-COVER REAR ASS’Y JC97-01620A 54-1 PMO-GUIDE-EXIT-OPEN JC72-00939A 54-2 PMO-COVER REAR JC72-00915A ELA UNIT-CSF ASS’Y(ZEUS) OPTIONAL O : Service available X : Service not available Samsung Electronics...

  • Page 86: Scanner Ass'y Exploded View & Parts List

    Exploded Views and Parts List 5-2. Scanner Ass’y Exploded View & Parts List Samsung Electronics...
  • Page 87 PMO-TRAY INPUT DOC JC72-00897A AS-OPE ASS'Y refer to info. PCT-COVER LCD refer to info. CBF HARNESS-OPE JC39-00167A AS-HOU LOWER ASS’Y JC81-00785A PMO-TRAY LINK,MP JC72-00857A IPR B/K JOINT COVER JC70-00297A SCREW-TAPTITE 6003-000196 O : Service available X : Service not available Samsung Electronics...

  • Page 88: Adf Upperass'y Exploded View & Parts List

    Exploded Views and Parts List 5-3. ADF Upper Ass’y Exploded View & Parts List 17-1 17-2 17-3 17-4 17-5 17-6 17-7 Samsung Electronics...
  • Page 89 MEA HOU-PRESSER ADF ASSY JC97-01664A 17-1 PMO-HOLDER ADF 17-2 IPR-SPRING ADF1 17-3 IPR-SPRING ADF2 17-4 PPR-FILM ADF2 17-5 SILICON/RUBBER-PAD ADF 17-6 PPR-FILM ADF1 17-7 RIVET-SNAP PPR-WHITE BAR SHEET JC72-00752A O : Service available X : Service not available Samsung Electronics...

  • Page 90: Scan Lower Ass'y Exploded View & Parts List

    5-15-2 5-15-4 5-14 5-15-1 5-14-5 5-17-1 5-14-3 5-14-6 5-17-2 5-17-3 5-14-2 5-14-4 5-17-4 5-17 5-14-1 5-17-3 5-16-11 5-17-5 5-17-4 5-16-9 5-16 5-10 5-16-7 5-16-10 5-16-6 5-16-8 5-16-5 5-16-3 5-12 5-16-1 5-16-4 5-16-2 5-13-3 5-13-1 5-13-4 5-13 5-13-2 5-11 Samsung Electronics...
  • Page 91 MEC-ROLLER EXIT 5-15-2 RING-E 5-15-3 WASHER-PLAIN 5-15-4 SPRING ETC-SHAFT 5-15-5 PMO-BUSHING SHAFT 5-15-6 GEAR-AGITATOR_1 5-16 MEA HOU-ROLLER ADF ASS’Y JC97-01613A 5-16-1 GEAR-ADF ROLL 5-16-2 SPRING ETC-CLUTCH 5-16-3 PMO-SLEEVE ADF 5-16-4 MEC-ROLLER ADF 5-16-5 ICT-SHAFT ADF 5-16-6 ICT-PIN ADF 5-10 Samsung Electronics...
  • Page 92 WASHER-PLAIN 5-16-9 SPRING ETC-SHAFT 5-16-10 PMO-BUSHING SHAFT 5-16-11 GEAR-ADF JC66-00363A 5-17 AS-MOTOR ASSY JC81-00788A 5-17-1 IPR-BRKT GEAR 5-17-2 MOTOR-STEPPING HELICAL 5-17-3 GEAR-REDUCTION 45/19 5-17-4 RING-C 5-17-5 GEAR-RDCN 4316 O : Service available X : Service not available Samsung Electronics 5-11...
  • Page 93 Exploded Views and Parts List 5-5. OPE Ass’y Exploded View & Parts List 5-12 Samsung Electronics...
  • Page 94 PMO-KEY SAVE JC72-00892A PMO-KEY OHD JC72-00864A PMO-KEY START JC72-00868A PMO-KEY STOP JC72-00869A RMO-KEY RUBBER MEMORY JC73-00111A RMO-KEY RUBBER NAVI JC73-00110A RMO-KEY RUBBER TEL JC73-00109A AS-OPE PBA JC81-00789A SCREW-TAPPING 6002-000319 O : Service available X : Service not available Samsung Electronics 5-13...

  • Page 95: Side Cover Ass'y Exploded View & Parts List

    Exploded Views and Parts List 5-6. Side Cover Ass’y Exploded View & Parts List 1-4 1-4 11-4 1-10 1-11 1-10 1-12 10-2 10-7 10-3 10-4 10-6 10-5 10-1 5-14 Samsung Electronics...
  • Page 96 PMO-TRAY LINK,MP 10-7 LABEL(R)-HEIGHT,MP CBF HARNESS-OPE GND PMO-TIE STOPPER JC72-00766A IPR-BRKT GROUND B JC70-00230A IPR-BRKT GROUND TR JC70-00231A IPR-BRKT GROUND A JC70-00232A IPR-BRACKET GUIDE B JC70-00234A PMO-BUSHING FEED JC72-00730A O : Service available X : Service not available Samsung Electronics 5-15...

  • Page 97: Cassette Ass'y Exploded View & Parts List

    Exploded Views and Parts List 5-7. Cassette Ass’y Exploded View & Parts List 5-16 Samsung Electronics...
  • Page 98 PMO-GUIDE FRONT CST PMO-GUIDE REAR JC72-00717A PMO-GUIDE/SIDE CST JC72-40967D PMO-LOCKER PLATE JC72-41210A PRP-PAD CST JC73-10910A SPRING ETC-LOCKER PLATE JG61-70531A SPRING ETC-PLATE K/UP JC61-00455A LABEL(R)-INSTRUCTION CST LABEL(R)-HEIGHT CST PMO-IMPACT CASSETTE O : Service available X : Service not available Samsung Electronics 5-17...

  • Page 99: Exit Ass'y Exploded View & Parts List

    Exploded Views and Parts List 5-8. Exit Ass’y Exploded View & Parts List 5-18 Samsung Electronics...
  • Page 100 SPRING-EXIT ROLL FD PMO-HOLDER EXIT ROLL PMO-ROLLER FD F PMO-ROLLER FD R SPRING ETC-EXIT LOWER IDLE MEC- BRUSH ANTISTATIC JC75-00095A PBA SUB-BIN-FULL SENSOR JC92-01400A RING-C PMO-LEVER STACKING JC72-00709A O : Service available X : Service not available Samsung Electronics 5-19...

  • Page 101: Feeder Ass'y Exploded View & Parts List

    Exploded Views and Parts List 5-9. Feeder Ass’y Exploded View & Parts List 5-20 Samsung Electronics...
  • Page 102 JC72-00727A PMO-HOLDER PINCH C PMO-HOLDER PINCH SUB PMO-ROLLER FEED L SPRING-FEED CAST PMO-HOLDER PINCH M PMO-SUB HOLDER FEED SPRING ETC-FEED MP WASHER-PLAIN PMO-ROLLER FEED S IPR-SHAFT FEED IDLER O : Service available X : Service not available Samsung Electronics 5-21...

  • Page 103: Mp Ass'y Exploded View & Parts List

    Exploded Views and Parts List 5-10. MP Ass’y Exploded View & Parts List 5-22 Samsung Electronics...
  • Page 104 PMO-HOLDER PAD,MP JC72-00771A PMO-HOLDER SENSOR,MP JC72-00772A PMO-HOUSING PICK UP,MP PMO-PLATE KNOCK UP,MP PMO-IDLE PICK UP,MP JC72-41027A RPR-RUBBER PICK UP,MP RPR-RCT-PAD-PICKUP,MP JC73-00090A RPR-PAD KNOCK UP,MP JC73-10906A PBA SUB-MP SEN JC92-01362A O : Service available X : Service not available Samsung Electronics 5-23...

  • Page 105: Base Frame Exploded View & Parts List

    IPR-GROUND PLATE B(BASE) JC70-00241A PMO-BASE FRAME PMO-BRACKET PUSH DEVE PMO-BRACKET SIDE OPEN JC72-00781A PMO-COVER FRONT DUMMY ELA M/MEDIO AUD-SPEAKER JC96-01607A IPR-GROUND PLATE SCF JC70-00243A CBF HARNESS SCF JC39-00082A O : Service available X : Service not available 5-24 Samsung Electronics...

  • Page 106: Pick-Up Ass'y Exploded View & Parts List

    PMO-LENS TONER SENSOR PMO-PTL PATH PMO-SHAFT PICK UP RPR-RUBBER PICK UP JC73-00086A SPRING-PICKUP JC61-00482A PBA SUB-FEED+P.EMP SEN. JC92-01363A PBA SUB-PTL JC92-01361A PBA SUB-TONER_TX JC92-01359A PICK UP, CSTAS (FRU) JC81-00428A O : Service available X : Service not available Samsung Electronics 5-25...

  • Page 107: Drive Ass'y Exploded View & Parts List

    Exploded Views and Parts List 5-13. Drive Ass’y Exploded View & Parts List 5-26 Samsung Electronics...
  • Page 108 GEAR-SWING DRV GEAR-35/19 GEAR-71/23 GEAR-DEVE DRV PMO-DEV/COUPLING GEAR-RDCN,OPC GEAR-86/23 GEAR-RDCN FEED OUTER GEAR-HUB CLUTCH GEAR-RDCN FEED INNER GEAR-FEED DRV GEAR-OPC DRV GEAR-GEAR FUSER DRV OUTER GEAR-FUSER DRV INNER RING-E O : Service available X : Service not available Samsung Electronics 5-27...

  • Page 109: Main Frame Ass'y Exploded View & Parts List

    Exploded Views and Parts List 5-14. Main Frame Ass’y Exploded View & Parts List 29.30 5-28 Samsung Electronics...
  • Page 110 PBA SUB-EXIT SENSOR JC92-01364A PBA SUB-TONER_RX JC92-01360A GEAR-EXIT/U,ID GEAR-EXIT,IDLE(Z17) CBF-HARNESS THERMISTOR_JOINT JC39-00164A PMO-HOUSING TERMINAL IPR-TERMINAL FU PMO-CAP CONNECTOR L JC72-00463A PMO-CAP CONNECTOR U JC72-00465A ELA HOU-MOTOR GND SPRING-CLUTCH RING-CS O : Service available X : Service not available Samsung Electronics 5-29...

  • Page 111: Fuser Ass'y Exploded View & Parts List

    Exploded Views and Parts List 5-15. Fuser Ass’y Exploded View & Parts List 23-3 23-4 23-2 23-1 5-30 Samsung Electronics...
  • Page 112 PMO-GUIDE INPUT IPR-GROUND FU MEA UNIT-ACTUATOR ASS’Y JC97-01611A 23-1 PMO-ACTUATOR EXIT 23-2 PMO-GUIDE DUPLEX 23-3 PMO-ARM ACTUATOR 23-4 GUIDE REMOVE SPRING-ACTUATOR 6G LABEL(R)CAU_HOT.FU LABEL(R)-LV FUSER 110V LABEL(R)-HV FUSER 220V O : Service available X : Service not available Samsung Electronics 5-31...

  • Page 113: Scf Ass'y Exploded View & Parts List

    Exploded Views and Parts List 5-16. SCF Ass’y Exploded View & Parts List 5-10 5-11 5-12 5-32 Samsung Electronics...
  • Page 114 ELA HOU-GUIDE PAPER LOWERSCF PMO-GUIDE PAPER LOWER PMO-HOLDER IDLE ROLL16 PMO-IDLE ROLLER SCF16 PMO-BUSH IDLE ROLL-SCF16 SPRING ETC-PAD ICT-SHAFT HV LARGE SPRING ETC--HV LARGE IPR-PLATE GROUND(A) CAM-CATCH FOOT-ML80 MEA UNIT-CASSETTE(A4) ASS'Y O : Service available X : Service not available Samsung Electronics 5-33...

  • Page 115: Screw

    SEC CODE DESCRIPTION SPEC 6006-000127 SCREW-ASS’Y MACH “WS,PH,+,M3,L6,ZPC(YEL),MSWR15” 6001-000568 SCREW-MACHINE “PH,+,M3,L8,NI PLT,SM20C,-” 6002-000175 SCREW-TAPPING “PWH,+,2,M3,L8,ZPC(YEL),SM20C” 6002-000351 SCREW-TAPPING “PH,+,2,M2,L8,ZPC(YEL),SM20C” 6003-000119 SCREW-TAPTITE “BH,+,B,M3,L8,CBLACK,SWRCH18A” 6003-000196 SCREW-TAPTITE “PWH,+,B,M3,L10,NI PLT,SWRCH18A” 6003-000198 SCREW-TAPTITE “PWH,+,B,M3,L12,ZPC(YEL),SWRCH1” 6003-000221 SCREW-TAPTITE “PWH,+,S,M4,L8,ZPC(YEL),SWRCH18” 6003-000266 SCREW-TAPTITE “PWH,+,S,M3,L6,ZPC(YEL),SWRCH18” 6003-000269 SCREW-TAPTITE “BH,+,S,M3,L6,ZPC(YEL),SWRCH18A” 5-34 Samsung Electronics...
  • Page 116 Exploded Views and Parts List SEC CODE DESCRIPTION SPEC 6003-001256 SCREW-TAPTITE “BH,+,B,M4,L10,NI PLT,SWRCH18A” 6002-000319 SCREW-TAPPING “PH,+,2,M3,L8,ZPC(YEL),SM20C” 6003-000267 SCREW-TAPTITE “PWH,+,S,M3,L8,ZPC(YEL),SWRCH18” Samsung Electronics 5-35...
  • Page 117 Exploded Views and Parts List 5-36 Samsung Electronics...

  • Page 118: Block Diagrams

    FAST SRAM Image Processor EXTERNAL FIFO PHONE LINE PHONE (1Mbit) INTE RFACE INTERFACE 12bit ADC SRAM I/F PART FUNCION UNIT I/O PORT : INPUT FORMAT/ Motor CNTR ENCODING/DECO Dual Line I/F ING /SCALING/ Connector(64P) DMA I/F ROTATION (Optional) Samsung Electronics...

  • Page 119: Connection Diagram

    T EL L IN E SW ITCH SF-830 3. +24V 1. +5V 13. RE CALL 14. nE_DP 4. +24VS SENSOR 2. S INAL only) ( Opt i onal ) 3. GND_5 FOR L SU + 5 V S CU T Samsung Electronics...

  • Page 120: Dual Line Option

    Master Board. The Master Board Received image from Slave Board and save them to User Memory. So there should be some specification between Master Board and Slave Board. 8-2 Specification ITEM Description NetBridge Chip Samsung NETBRIDGE Hardware 32bit RISC Processor, KS32C65100, 30MHz Flash Memory 1 Mbyte DRAM...

  • Page 121: Dual Line Board Connector Pin Assignment

    (CN2) MODEM_TXA1 DGND AC signal MODEM_TXA2 DGND AC signal REMOTE DGND nHOOK_OFF2 DGND CML1 DGND nRING_DET DGND DGND RECALL DGND nE_DP DGND +12V +12V +12V DGND 2, 12 DGND DGND Serial Connector (CN1) Pulse Pulse DGND DGND DGND Samsung Electronics...

  • Page 122: Troubleshooting Of Dual Line Board

    Dual Line Circuit Description 8-4 Troubleshooting of Dual Line Board 8-4-1 Troubleshooting Flow Chart 8-4-2 Dual Line Board error Samsung Electronics...

  • Page 123: Modem Interface Error

    Dual Line Circuit Description 8-4-3 Modem interface error Samsung Electronics...

  • Page 124: Liu Interface Error

    Dual Line Circuit Description 8-4-4 LIU interface error Samsung Electronics...
  • Page 125 Dual Line Circuit Description Samsung Electronics...
  • Page 126 Repair Manual Repair Manual Digital Laser MFP SF-835P / SF-830 Msys835P / Msys830 CONTENTS 1. Block Diagram 2. Connection Diagram 3. Circuit Description 4. Schematic Diagrams...
  • Page 127 - This Service Manual is a property of Samsung Electronics Co.,Ltd. Any unauthorized use of Manual can be punished under applicable International and/or domestic law. -...
  • Page 128 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) 2002. 02...
  • Page 129 BLOCK DIAGRAM 1. Block Diagram Repair Manual Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 130 14. nE_DP 4. +24VS SENSOR 2. S INAL only) ( Opt i onal ) 3. GND_5 FOR L SU + 5 V S CU T Repair Manual Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 131 OPE PANEL OSC.(Video) 45.3928 MHz INTERFACE JBIG OSC. Engine INTERFACE IC Comm. I/F 48 MHz (UNICON) LRAM:1296B CXRAM:256B HPVC RAM : 512B 512B+512B <Block Diagram> Repair Manual Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 132 VCC RISING/FALLING 4.5°≠4.6V RESET TIME (Td) 1.48~1.52ms • Td=(Ct*V sensing)/I charge (...Ct=33µF, Is=100µA) 2) TIMING CHART and SENSE Threahold Voltage 3.6V RESET Output Output Undefined Undefined Repair Manual Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 133 " CPU Data Bus 20 " DATA21 " CPU Data Bus 21 " Vddi 3.3 V DATA22 Input CPU Data Bus 22 PHBTT8, 8 mA Repair Manual Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 134 PHOB4 AVdd Vcca Analog 3.3 V AVin[0] Analog Input 0 PICA AVin[1] Analog Input 1 " AVss Vssa Analog Gnd AVssAVin[2] Analog Input 2 PICA Repair Manual Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 135 Data Strobe PHIL, ST Vsso 5 V Gnd RxD1 / CTin[2] Uart 1 Rx Data PHIL, ST TxD1 Uart 1 Tx Data PHOB4, 4 mA Repair Manual Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 136 PHOB4, 4 mA Vddo nDRAMCAS0 DRAM Cas Strobe 0 PHOB8, 8 mA nDRAMCAS1 " DRAM Cas Strobe 1 " nDRAMCAS2 " DRAM Cas Strobe 2 " Repair Manual Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 137 DRAM Data Bus 10 " DRAMD11 " DRAM Data Bus 11 " Vssp 5 V Gnd DRAMD12 Input DRAM Data Bus 12 PHBTT12, 12mA Vddp Repair Manual Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 138 DRAM Address Bus 0 PHOB8, 8 mA DRAMA1 " DRAM Address Bus 1 " DRAMA2 " DRAM Address Bus 2 " DRAMA3 " DRAM Address Bus 3 " Repair Manual Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 139 Address Bus 6 for ROM " ADDR7 " Address Bus 7 for ROM " Vssi 3.3 V Gnd ADDR8 Address Bus 8 for ROM PHOB8, 8 mA Repair Manual Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 140 Capacitor is connected CPU Test Mode : CPUTEST PHILD50, ST Tied to Gnd nRESET Reset Input PHIL, ST nRSTOUT Reset Output PHOB8, 8 mA Repair Manual 3-10 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 141 LED will scroll and the PROGRAM DOWNLOAD MODE will be activated. In this mode, you can download the pro- gram through the parallel port. MCLK A23-2 nROMCS ACC+1 SETUP HOLD <Write Timing Diagram for Two Beat Burst Cycle> Repair Manual 3-11 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 142 Next bank3 Bas e bank2 Next bank2 Bas e bank1 Next bank1 Bas e bank0 Next bank0 Bas e 0x0000000 <DRAM Bank Configuration> Repair Manual 3-12 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 143 MCLK nRAS nCAS column address column address r ow address DRAMA dat a 0 dat a 1 DRAMD Tcas Tcas <FPM Read Timing Diagram> Repair Manual 3-13 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 144 # register cycle # register 40 ns FPM 50 ns FPM 58Mhz 60 ns FPM 70 ns FPM <SFR Values Example for FPM> Repair Manual 3-14 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 145 5Mhz MCLK nRAS nCAS column r ow address column DRAMA data 0 data 1 DRAMD Tcas Tcas <EDO Read Timing Diagram> Repair Manual 3-15 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 146 # register cycle # register 40 ns EDO 50 ns EDO 58Mhz 60 ns EDO 70 ns EDO <SFR Values Example for FPM> Repair Manual 3-16 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 147 WRITE respectively. /IRQ is a signal for modem interrupt. Transmission speed of FM336 is supported up to 33.6k. The modem is connected to LINE through transformer directly. < FAX TRANSCEIVER > Repair Manual 3-17 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 148 CIRCUIT DESCRIPTION 3-2-10 PM-22 (JBIG COMPRESS & DECOMPRESS) 3-2-10-1 Block Diagram Repair Manual 3-18 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 149 I/O signal pins (including all inputs, outputs, and bidirectionals). in systems where 3.3V signaling only is used, connect VDDBIAS to a 3.3V supply. Repair Manual 3-19 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 150 IMPORTANT : CLOCK pin timing is measured at TTL levels, not CMOS. The system CLOCK driver must be configured cor- rectly in order to ensure that duty cycle and Vil specifications are met. Repair Manual 3-20 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 151 Output Buffer Ready OSTRB Output Buffer Strobe PLL_BYP Phase Locked Loop Bypass RA[15:0] RAM Address RAMOE RAM Output Enable < Pin Classification and Loading > Repair Manual 3-21 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 152 Combinations indicate bidirectional pins. An “H” in the Resistor column indicates the pad has an internal pull-up resistor. A tilde (~) indicates no internal resistor. Repair Manual 3-22 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 153 1 024 x 8 n CS n RD n WR A [ 5 : 0] D [ 15 : 0] n XDREQ n XDACK <Block Diagram> Repair Manual 3-23 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 154 : 25 ~ 800% by 1% unit • Vertical direction : 25 ~ 100% by 1% unit (2) Scaling data memory : 2x8Kx8bits = 128Kbits (internal) Repair Manual 3-24 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 155 Scanner PI1 , PI2 Tx_A, Tx_B, DAT A- BUS DAT A- BUS n Tx_A, nTx_B CIP3 D OCU MENT IMAGE <External interface with CIP3> Repair Manual 3-25 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 156 TX_EN1, EN2 Interface CPU I/F CIP3 SRAM Mod ule Register 1 024 x 8 nRD nWR A[5:0] D [15:0] nXDREQ nXDACK <Block diagram of CIP3> Repair Manual 3-26 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 157 PC are all processed through this part. PPD( 7: 0) DATA BUSY nSTROBE nACK <Compatibility Hardware Handshaking Timing> Repair Manual 3-27 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 158 7. Host sets nAUTOFD low to indicate that it is ready for the next byte 8. The cycle repeats, but this time it is a command cycle because BUSY is low Repair Manual 3-28 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 159 • 8-bit parallel interface with two selectable modes : non-multiplexed • multiplexed (Intel compatible) • DMA support for parallel interface • MICROWIRE/PLUS Interface • 28-pin SO package Repair Manual 3-29 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 160 D[7:0] ADDRESS ADDR 0x3F REGISTERFILE <Non-Multiplexed Mode Interface Block Diagram> D[7:0] input vvrte Address Read Data Burst Read Data <Non-Multiplexed Mode Basic Timing Diagram> Repair Manual 3-30 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 161 ‘nHSYNC’ signal (pulse) and the CPU forms the left margin of the image using this signal (horizontal synchronous signal). Repair Manual 3-31 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 162 While the supply roller energized with -450V by HVPS and the developer roller energized with -300V rotate in the same Repair Manual 3-32 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 163 4) Transfer ‘+’ Output (Enable) Unit: THV(+)(Transfer High Voltage(+)) 5) Transfer ‘-’ Output (Enable) Unit: THV(-)(Transfer High Voltage(-)) 6) Switching Unit 7) Feedback Unit 8) Regulation Unit 9) Output Unit Repair Manual 3-33 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 164 CONTROL UNIT FEEDBACK <MHV Output unit Block Diagram> BIAS-PWM BLADE REGULATION SWITCHING CONTROL UNIT TRANS CIRCUIT CONTROL UNIT SUPPLY FEEDBACK <BIAS Output Unit Block Diagram> Repair Manual 3-34 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 165 R510 7407 2.2K R503 U101-B C501 R504 R512 100KF KA324 56.6KF MGR1/2W 12MF C504 R516 R511 R502 C502 MGR1/2W 50K R507 1W 3 12KF Repair Manual 3-35 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 166 R304 R306 100KF C305 R314 R311 389KF 26.1KF KA324 333Z 100KF 1.7K C302 C303 D302 R305 1N4148 R301 10KF 470K C304 500V103Z VR301 C301 Repair Manual 3-36 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 167 CPU, the transfer voltage output will differ according to the preset transfer table. The changes in transfer output required by each load is controlled by PWM-DUTY. Repair Manual 3-37 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 168 • Machine status LED drive signals are sent from U1 LED 1~ LED 8. RESONATOR 7.37 MHz UART2 16 X 2 Line MICOM Connector Reset Z8601 Key Matrix LEDs <OPE BLOCK DIAGRAM> Repair Manual 3-38 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 169 • CTR 21 does not have telephone capability but has the number 3 and 4 Line Connection. No DP condition but possibility to get approval only on DTMF Dial based terminal. Repair Manual 3-39 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 170 Refer to load short and when output shorted the range of when output shorted overload protection 23) for 5 sec. 3.5A~6.5A for 5 sec. Repair Manual 3-40 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 171 AC Neutral L501 R503 Zero crossing circuit Logic Unit Fuser On C502 THY501 R505 SMPS Unit R502 U501 CON502 DC Power <Fixed Lamp Control Circuit> Repair Manual 3-41 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 172 When triac commutes off-line, the volt- age of both ends of triac will have the same voltage as the line voltage. Inductive I <Inductive Circuit> Repair Manual 3-42 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 173 SCHEMATIC DIAGRAMS SCHEMATIC DIAGRAMS 4. Schematic Diagrams 4-1 Main Circuit Diagram (1/17) Repair Manual Repair Manual Samsung Electronics Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 174 SCHEMATIC DIAGRAMS Main Circuit Diagram (2/17) Repair Manual Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 175 SCHEMATIC DIAGRAMS Main Circuit Diagram (3/17) Repair Manual Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 176 SCHEMATIC DIAGRAMS Main Circuit Diagram (4/17) Repair Manual Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 177 SCHEMATIC DIAGRAMS Main Circuit Diagram (5/17) Repair Manual Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 178 SCHEMATIC DIAGRAMS Main Circuit Diagram (6/17) Repair Manual Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 179 SCHEMATIC DIAGRAMS Main Circuit Diagram (7/17) Repair Manual Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 180 SCHEMATIC DIAGRAMS Main Circuit Diagram (8/17) Repair Manual Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 181 SCHEMATIC DIAGRAMS Main Circuit Diagram (9/17) Repair Manual Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 182 SCHEMATIC DIAGRAMS Main Circuit Diagram (10/17) Repair Manual 4-10 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 183 SCHEMATIC DIAGRAMS Main Circuit Diagram (11/17) Repair Manual 4-11 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 184 SCHEMATIC DIAGRAMS Main Circuit Diagram (12/17) Repair Manual 4-12 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 185 SCHEMATIC DIAGRAMS Main Circuit Diagram (13/17) Repair Manual 4-13 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 186 SCHEMATIC DIAGRAMS Main Circuit Diagram (14/17) Repair Manual 4-14 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 187 SCHEMATIC DIAGRAMS Main Circuit Diagram (15/17) Repair Manual 4-15 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 188 SCHEMATIC DIAGRAMS Main Circuit Diagram (16/17) Repair Manual 4-16 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 189 SCHEMATIC DIAGRAMS Main Circuit Diagram (17/17) Repair Manual 4-17 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 190 0.25W ARS1-3 : OPTION (BLK) 180K, 1/4W /250V (BRW) 120K /250V 1K,1% 2.74K, 1% (RED) (ORG) 0.22UF/16V /16V /16V 600:600 (BLU) (YEL) (GRN) 15nF/400V Repair Manual 4-18 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 191 SCHEMATIC DIAGRAMS 4-3 OPE Circuit Diagram Repair Manual 4-19 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 192 SCHEMATIC DIAGRAMS 4-4 Scan Circuit Diagram Repair Manual 4-20 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 193 SCHEMATIC DIAGRAMS 4-5 Sensor Circuit Diagram VCC_DD VCC_DD D_DET D_SCAN RPI-441C1 D_DET 35303-0450 3711-003410 DGND DGND VCC_DD 35303-0350 D_SCAN DGND DOCUMENT DETECT B D Repair Manual 4-21 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 194 R516 R502 C502 R511 C504 MGR1/2W 50K R507 D501 1W 3 12KF 1N4148 R517 MGR1/2W 15MF 24VS U102 KA7818 C102 C103 C104 35V 47uF Repair Manual 4-22 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 195 C305 R306 CON03-#20 R316 U101-D 100KF R304 26.1KF KA324 200KF C303 R317 R305 9.53KF C302 R301 D302 470K 1N4148 C304 500V 103 INDEX C301 Repair Manual 4-23 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 196 1/8W680J 50V471J +24V ZD1 ZD-500MW30V ZD-500MW6.2V 1/8W1KJ RD1/8W01.5KJ 1/8W5.6KJ 50V683J +24S 1/8W1KJ 1/8W10KJ FUSER_ON 1.2KJ PC-123 1/8W68J 1/8W220J 1/8W220J C1008 1/8W680J C-MY50V104 PC-123 C-MY50V104 Repair Manual 4-24 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 197 1/8W680J 50V471J +24V ZD1 ZD-500MW30V ZD-500MW6.2V 1/8W1KJ RD1/8W01.5KJ 1/8W5.6KJ 50V683J +24S 1/8W1KJ 1/8W10KJ FUSER_ON 1.2KJ PC-123 1/8W68J 1/8W220J 1/8W220J C1008 1/8W680J C-MY50V104 PC-123 C-MY50V104 Repair Manual 4-25 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 198 SCHEMATIC DIAGRAMS 4-8 PTL Circuit Diagram Repair Manual 4-26 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 199 SCHEMATIC DIAGRAMS 4-10 Toner_Rx Circuit Diagram Repair Manual 4-27 Samsung Electronics - This Document can not be used without Samsung's authorization -...
  • Page 200 SCHEMATIC DIAGRAMS 4-11 Toner_Tx Circuit Diagram Repair Manual 4-28 Samsung Electronics - This Document can not be used without Samsung's authorization -...

This manual is also suitable for:

Sf-830Sf-835pMsys830Msys835p

Table of Contents