Samsung ML-7000P Service Manual
  1. Manuals
  2. Brands
  3. Samsung Manuals
  4. Printer
  5. ML-7000P
  6. Service manual
Samsung ML-7000P Service Manual

Samsung ML-7000P Service Manual

Hide thumbs Also See for ML-7000P:
Table of Contents

Advertisement

Quick Links

Download this manual See also: User Manual
SERVICE
Laser printer
Download Service Manual And Resetter Printer at http://printer1.blogspot.com
ML-7000 Series
ML-7000P
ML-7000N
QwikLaser 7000
QwikLaser 7000P
QwikLaser 7000N
Manual
1. Precautions
2. Reference Information
3. Product Information
4. Disassembly
5. Trouble Shooting
6. Exploded Views & Parts List
7. Block Diagrams
8. PCB Diagrams
9. Port Thru
(Network Printer Card)
Contents

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the ML-7000P and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Samsung ML-7000P

Summary of Contents for Samsung ML-7000P

  • Page 1 ML-7000 Series ML-7000P ML-7000N QwikLaser 7000 QwikLaser 7000P QwikLaser 7000N SERVICE Manual Laser printer Contents 1. Precautions 2. Reference Information 3. Product Information 4. Disassembly 5. Trouble Shooting 6. Exploded Views & Parts List 7. Block Diagrams 8. PCB Diagrams 9.

  • Page 2: Troubleshooting

    5. Troubleshooting 5-1 Print Quality Error status Check Solution 1. Check HVPS output voltage 1. Refer to HVPS output spec 2. Check terminal contact for - Replace the engine board Dark Image HVPS. - Refer to “4 - 11” 2. Fix the terminal to contact well. 1.
  • Page 3 Error status Check Solution 1. Check HVPS voltage 1. Refer to HVPS output spec. - Replace the engine board 2. Check the GND OPC contact. 2. Fix contact points to fit well. - Contact among GND OPC contact points. - Image cartridge. - GND OPC terminal on frame - GND OPC terminal on the No image (all white)
  • Page 4 5-2 HVPS Output Spec CODE NO. HVPS OUTPUT REMARK CHARGER “01” - 1.55 KV 1. Turn off the printer 2. Open the rear cover and disassemble TRANSFER “-” “02” -1KV~ -1.4KV TRANSFER “+” “03” +1.8 KV the cover-shield. 3. Connect the DCU on engine board and BIAS “04”...
  • Page 5 5-3 Malfunction Error status Check Solution 1. Check FUSE 1. Replace SMPS. - F1(8A), F2(5A) OPEN. - Refer to “4-12” 2. Check FUSE. 2. Measure the resistance +5V and GND. No Power - F3(250V/3A) OPEN. (Engine board CN5-pin6 and CN5- pin9).
  • Page 6 Error status Check Solution 1. Check the exit sensor. 1. Replace Exit sensor. - Refer to DCU mode “08” - Refer to “4-11” 2. Check the exit sensor actuator. 2. Replace Exit sensor actuator. Jam 2 3. Check the Exit Roller. - Refer to “4-5, 6-6”...
  • Page 7 Error status Check Solution 1. Check the DC supply for laser 1. If +5Vs for laser diode isn’t supplied. scanning unit check the cover switch assembly for +5Vs and fix it, Internal Error 10 2. Check laser scanning unit 2. If the DC power supply for laser (Scanner Error) - Refer to DUC mode “05”...
  • Page 8 Error status Check Solution - Refer to DCU mode “00” 1. Check the supply voltage. (+24Vdc) 1. Replace to cover open unit. Engine board CN1 -2,5 pin 2. Replace cable 2. Check the Motor cable for cuts or 3. Replace Motor. pinched wiring.
  • Page 9 5-4 .Connector Pin Assignment 5-4-1. Engine Board Connector Pin Assignment CONNECTOR PIN-NO DESCRIPTION IDLE ACTIVE IN/OUT MOTOR_PB* +24V PULSE +24V +24V +24V MOTOR_PB +24V PULSE MOTOR MOTOR_PA* +24V PULSE MOTOR_PA* +24V +24V +24V +24V +24V DUPLEX D_CLUTCH +24V +24V +24V +24V +24V CAST_SENS1...
  • Page 10 CONNECTOR PIN-NO DESCRIPTION IDLE ACTIVE IN/OUT DGND DGND DNGD LDON +5Vs HSYNC LREADY PMOTOR +24V AGND AGND AGND +24VS2 +24V +24V EBUSY 2 , 1 7 , 1 9 , 2 0 , 2 1 D G N D D G N D D N G D 2 2 , 2 3 , 2 4 E M S G...
  • Page 11 5-4-2. Joint Board Connector Pin Assignment CONNECTOR PIN-NO DESCRIPTION IDLE ACTIVE IN/OUT 1,2,4 MP_CLUTCH 0.7V Q_LAMP 0.7V +5Vs SCF_READY CN501 8,10 +24VS2 +24V +24V JOINT BOARD STS_SCF PULSE PULSE INTERFACE MP_PAPER 12,14 AGND AGND AGND TONER CMD_SCF PULSE PULSE 16,18 DGND DGND DGND...
  • Page 12 5-4-3. S.C.F Board Connector Pin Assignment CONNECTOR PIN-NO DESCRIPTION IDLE ACTIVE IN/OUT AGND AGND AGND +24V +24V +24V ENGINE STS_SCF PULSE PULSE JONIT BOARD CMD_SCF PULSE PULSE INTERFACE OPT_CLK PULSE PULSE SCF_READY DGND DGND DGND MOT_PA +24V PULSE MOT_PB +24V PULSE MOTOR MOT_PA*...

  • Page 13: Troubleshooting Of Video Controller

    5-5 .Troubleshooting of Video Controller Most electronic products are sensitive to connectors and assemblies that are not complete seated. Therefore, before starting the troubleshooting procedure, do a mechanical check of all the connectors and assemblies to make sure that everything is properly seated. 1.

  • Page 14: Power Error

    Power Error Download Service Manual And Resetter Printer at http://printer1.blogspot.com...

  • Page 15: System Error

    System Error Download Service Manual And Resetter Printer at http://printer1.blogspot.com...
  • Page 16 Engine Error Self Test Error Download Service Manual And Resetter Printer at http://printer1.blogspot.com...
  • Page 17 Parallel Interface Error Printing Error Download Service Manual And Resetter Printer at http://printer1.blogspot.com...
  • Page 18 5-5-2. Troubleshooting Table of Video Controller Board Error Type Ckeck List Repair Power cord connection Connect the power cord Vcc voltage(nominal is +5V) level Refer to the section of Vcc voltage should be in the range between+4.38-+5.2V Engine troubleshooting The backlight Short Between Vcc and GND Repair board of LCD is not...

  • Page 19: Front View

    4. Disassembly 4-1 Front View Control Panel ° Cover Open Power Switch ° Cover Tray Cover Front ° Paper Level Indicator ° ° ° 4-2 Rear View Cover Rear Controller Cassette ° Power Inlet ° ° Download Service Manual And Resetter Printer at http://printer1.blogspot.com...

  • Page 20: Cabinet Disassembly

    4-3 Cabinet Disassembly 4-3-1. Cover Right Remove the screws and open the Cover Rear. ° Cover Rear Screw ° Cover Right Screw In order to remove the Cover Right. Please see the hook which locks the cabinet to the frame, right hand should first grab the hook and pull it out for releasing the hook from the frame.
  • Page 21 The left hand should slide the Cover Right to the backward. Download Service Manual And Resetter Printer at http://printer1.blogspot.com...
  • Page 22 4-3-2. Cover Left Remove screw and open the Cover Rear. Please see the hook of the Cover Left. Pull the Hook and release it Screw from the frame. Hook Hook Slide the Cover Left to the backward with pulling the hook out. The Cover Left can be easily removed.
  • Page 23 4-3-3. Cover Front Please see the MP tray disassembly. (4-9) 4-3-4. Cover Main Cover Open Open the Cover Open. Remove two screws. Cover Top Screw Screw Cover Main See the hooks. Push the hooks up and pull them upward. With holding Cover Main, remove the panel wire.
  • Page 24 4-3-5. Cover Rear Open the Cover Rear. Stripe Detach the stripe by pushing the stripe. There is a hook holding the stripe. ® ® Cover Rear After detaching the stripe from the Cover Rear, Release the Cover Rear from the hinge.
  • Page 25 4-4 Video Controller board & Joint board After removing external cabinet, see the 5 screws and you should remove them. The Shield ICU is important for EMI and protection for Controller. ° Shield ICU Screw Joint Board After removing Shield ICU, you can see the assembled controller.
  • Page 26 Remove the screws which hold the Bracket ICU to the frame and deta- ch controller from the frame. You can see the Frame ICU. Screw Parallel reserved for Network reserved for Serial Screw ASIC(QP1700) ASIC (Powerbridge) Connector for Network ASIC (Hype chip) Power PC processor Video Controller Board...
  • Page 27 4-5 Fuser Ass’y Open the Cover Rear and see the screws and unscrew and remove the Cover pcb. Screw Cover pcb for engine B’d After removing the Cover pcb, unplug the Thermistor connetor from the Engine Board. Thermistor connector Download Service Manual And Resetter Printer at http://printer1.blogspot.com...
  • Page 28 See the 4 screws which hold the fuser assy to the frame. You should unscrew and pull the fuser out and it will be removed. The AC connector for fuser is des- igned to be directly connected to the AC socket which is positioned in the frame.
  • Page 29 When Jam happens, you can easily remove it by pulling the Guide Rear out like figure. In order to remove Guide Rear, opening the Guide Rear out like figure and pull out hinge of Guide Rear. ® ® Guide Rear Download Service Manual And Resetter Printer at http://printer1.blogspot.com...
  • Page 30 4-6 Bracket Motor Ass’y & Cover Open Switch Unit Bracket Motor ass’y is located in the right-upper side. Remove 7 black screws and detach the ass’y from the frame and unplug the motor connector from the motor. Bracket Motor Ass’y You can see the Bracket Motor ass’y.
  • Page 31 After removing the Bracket Motor ass’y, you can see the Cover Open Cover Open Switch unit Switch Unit. Remove the SMPS. Refer to SMPS & Bracket Duplex Ass’y disassembly (4-12) Detach two Connectors form the SMPS. Remove 2 screws and detach the unit from the frame.
  • Page 32 4-7 Pickup Ass’y After running about more than 100,000 pages, the pickup ass’y may be needed to be replaced depending on feeding quality. Remove the screw of Bracket Support and tension spring. Pickup Ass’y Tension Spring Screw Lift Guide Front Duplex and remove the 3 mounting screws of Pickup Ass’y.

  • Page 33: Laser Scanner Unit

    4-8 Laser Scanner Unit Cover Top Cap-wire LSU Laser Scanner Unit is located in the upper frame. In order for LSU disassembling, disassemble the Cover Main, you should take off the left and right cover. There is wiring protection cover(Cap Wire LSU)for LSU wires. Remove Cap wire LSU.
  • Page 34 There are two wires for LSU. One is LSU motor and the other is Laser beam control. The wires are wire to wire types. You can easily disconnect the wires. After disconnection, unscrew and remove LSU. Download Service Manual And Resetter Printer at http://printer1.blogspot.com...

  • Page 35: Multi Purpose Tray

    4-9 Multi Purpose Tray Remove the Cover main. Hook See the Links which hold the MP tray in the both side. Hold the Links and pull it to the arrow direction. Hold the MP tray and pull it to the arrow direction.
  • Page 36 Screw Hook Cover Front After detaching the Tray MP, see the screws and remove them. Remove the hook and release the Cover Front by releasing the hook. Download Service Manual And Resetter Printer at http://printer1.blogspot.com...
  • Page 37 Screw Screw Screw Screw After removing Cover Front, detach the MP ass’y by unscrewing 4 screws. Before detaching MP Ass’y, unplug the MP solenoid and MP sensor connector from the Joint Board. < MP Assy > Download Service Manual And Resetter Printer at http://printer1.blogspot.com...

  • Page 38: Control Panel

    4-10 Control Panel Cover Top LCD Ass’y Cover Open First lift up Cover Main and see the panel wire and disconnect the wire from the panel board. And next step is to remove the panel board which is located in the Cover Top. Control panel consists of LCD ass’y and Key&LED ass’y.
  • Page 39 LCD Ass’y Hook Cover Top Hinge After removing Key&LED ass’y, release the hook of LCD assy from Cover Top and see the hinge for LCD ass’y in the cabinet and release them. You should spread the hinge of LCD ass’y. But be careful not to damage the hinge.

  • Page 40: Engine Controller Board

    4-11 Engine Controller Board Paper In order for disassembling PCU, the printer should be turned upside down. When turned over, toner may contamin- ate LSU window. Open the Cover Top and you should insert one paper into the inner like above figure. Open the Cover Rear and remove the Cover PCB.
  • Page 41 Bar Cross Bottom CST Sensor After turning over, remove Bar cross Bottom by unscrewing them 8 screws. Next remove the CST Sensor and remove the screws in the PCU which are black colored screws. Download Service Manual And Resetter Printer at http://printer1.blogspot.com...
  • Page 42 After unscrewing, lift the PCU like above figure. And you can see the connector which are LSU’s and ‘Video I/F’s’. Unplug them with care. Be careful not to be hurt to your hands when you disconnect the wires because the connection is tight and you may pull the connectors strongly. Download Service Manual And Resetter Printer at http://printer1.blogspot.com...
  • Page 43 PCU room < PCU Ass’y > Above is to show the disassembled PCU and Frame. PCU Assy has some sensor, some actuator, solenoid and Shield plate and HVPS circuit. Service man could ask the Assy or repair parts. Download Service Manual And Resetter Printer at http://printer1.blogspot.com...
  • Page 44 Screw Screw Screw Screw In order to remove SMPS, first remove Cover Left. Use your left hand to release hook from the frame and slide the Cover Left to backward by use of right hand. After removing Cover Left, you can see the SMPS. Unplug the power connector and release the wire from the wire guide of the SMPS.
  • Page 45 +24V AC Connector There are 4 connectors to the SMPS. The power connector is +5V and +24V output from SMPS. AC for fuser is AC output from SMPS to the fuser. And there are microswitches whice are attached to the upper frame and which are attached to the upper frame and which are shorted when Top cover is closed, namely interlock Switches for +24V for HVPS, motor and for +5V for Laser beam.
  • Page 46 4-13 Transfer Roller Ass’y Holder Transfer Roller Open the Cover Top, you can see colored levers at each side of Transfer Roller, push the levers which is attached in the Holder transfer Roller to release the Ass’y. Download Service Manual And Resetter Printer at http://printer1.blogspot.com...

  • Page 47: Product Information

    3. Product Information Engine Specifiation Item Descriptions Remarks Speed 17 PPM Letter Resolution 600 DPI +RET Imaging Eletrophotography Toning/Fusing Non-mag monocomponent/contact WarmUp time Less than 60 secs N/N condition FPOT Less than 13 secs standby mode Engine Duty Cycle Maximum 50,000 pages per month 427 °...

  • Page 48: Controller Specification

    Controller Specification Item Descriptions Remarks Power PC, 100MHZ °Default : PCL6 Emulation °Option : Postscript Level 2 °4MB Standard °Max up to 68MB °Speed : 60nS ° DRAM Module’s Features °Refresh Time : 2048 Cycles/32mS °Fast Page Mode with Extended data out Memory °CAS-before-RAS refresh capability °TTL compatible inputs and outputs...

  • Page 49: Reference Information

    2. Reference Information 2-1 Abbreviations and Acronyms Tables 2-1 and 2-2 List abbreviations and acronyms which may be found in this sevice manual. Table 2-1. Abbreviations Abbv Definition Abbv Definition amps amperes pound(s) linearity ass’y assembly lock bus lock badac bad assess millimeter(s) negative...
  • Page 50 Table 2-2. Acronyms Acronym Definition Acronym Definition Automatic Blanking Limiter Intelligent Drive electronics or Imbedded Drive Electronics Automatic Color Control Intermediate Frequency Analog to Digital Converter Images Per Minute Address/Data Status Industry Standard Architecture Address-Latch Enable Keyboard Controller ASCII American Standard Code for Local Address/Data Bus Information interchange BIOS...

  • Page 51: Diagnostic Control Unit

    2-2. Diagnostic Control Unit 2-2-1. Abstract The diagnostic Control Unit(DCU) is useful for troubleshooting the Laser beam printer ML Series engines, and for checking printer status. The DCU can be used in common for ML series, but each model has several different code description. Refer to the code description for ML-7000 in next page.
  • Page 52 2-2-2. List of code description Code Description 1. DIAGNOSTIC CODE 2.STATUS CODE MAIN MOTOR OPERATING SYSTEM ERROR MAIN HIGH VOLT ON / OFF TEST Ready to print from LEGAL paper tray THV (- ) ON / OFF TEST Ready to print form LETTER paper tray THV (+) ON / OFF TEST Ready to print form A4 paper tray DEV, SUPPLY ON / OFF TEST...
  • Page 53 2-2-3. The Diagnostic Control Unit (DCU) Operating Guide The DCU has functions as follows: 1) Engine Status and Error Code Display mode ¶ ° Display the engine status and error status code. Refer to List of Code Description. 2) Self-Test mode. ¶...
  • Page 54 Code Operation LED Display ENTER Pickup Clutch ON Lighten ON LED SHIFT+STOP Pickup Clutch OFF Lighten OFF LED Increment DCU Code No. (07, Sensor TEST) SHIFT+DOWN Decrement DCU code No. (06, Pickup Clutch) No Action Paper Empty Sensor ON/OFF 1st LED ON/OFF No Action Duplex 1 Sensor ON/OFF 2nd LED ON/OFF...
  • Page 55 List of Contents 1. Precautions 6. Exploded Views & Parts List 1-1 Safety Precautions 6-1 Cover Ass’y 1-2 Laser Safety Statement 6-2 Frame Ass’y 6-3 Cassette Ass’y 2. Reference Information 6-4 MP Tray Ass’y 6-5 Pick Up Ass’y 2-1 Abbreviations and Acronyms 6-6 Fuser Ass’y 2-2 Diagnostic Control Unit 6-7 Shield Ass’y...
  • Page 56 1. Precautions 1-1 Safety precautions Read each caution carefully 1. Do not use the pinter near water or when exposed to inclement weather. 2. Do not place this printer on an unstable cart, stand or table, the product may fall, causing serious damage to the product.

  • Page 57: Laser Safety Statement

    1-2 Laser Safety Statement The printer is certified in the U.S to conform to the requirement of DHHS 21CFR Subchapter J for Class I(1) laser product, and elsewhere is certified as a class I laser product conforming to the requirement of IEC 825. Class I laser product are not considered to be hazardous.
  • Page 58 ELECTRONICS © Samsung Electronics Co., Ltd. Sep. 1998 Printed in Korea P/N. JC68-00034A Rev 1.00 Download Service Manual And Resetter Printer at http://printer1.blogspot.com...

This manual is also suitable for:

Ml-7000nQwiklaser 7000Qwiklaser 7000pQwiklaser 7000n

Table of Contents