Samsung SCX-4100 manual

SERVICE DIGIT AL LASER MFP SCX-4100 Manual DIGIT AL LASER MFP CONTENTS 1. Precautions 2. Reference Information 3. Specifications 4. Summary of product 5. Disassembly and Reassembly 6. Alignment and Adjustments 7. T roubleshooting 8. Exploded Views and Parts List 9. Block Diagram 10. Connection Diagram[...]

© Samsung Electronics Co.,Ltd. Ma y 2004 Printed in Korea. VERSION NO. : 1.00 CODE : JC-0125A This service manual is also provided on the web, the ITSELF system f Samsung Electronics Co., Ltd. http://itself.sec.samsung.co.kr[...]

1 1 1-1 Precautions Service Manual 1. Precautions In order to prevent accidents and to prevent damage to the equipment please read the precautions listed below carefully before servicing the printer and follow them closely . 1.1 Safety W arning (1) Only to be serviced by appropriately qualified service engineers. High voltages and lasers inside thi[...]

1-2 Precautions Service Manual 1.2 Caution for safety 1.2.1 T oxic material This product contains toxic materials that could cause illness if ingested. (1) If the LCD control panel is damaged it is possible for the liquid inside to leak. This liquid is toxic. Contact with the skin should be avoided, wash any splashes from eyes or skin immediately a[...]

1-3 Precautions Service Manual 1.2.3 Handling Precautions The following instructions are for your own personal safety , to avoid injury and so as not to damage the printer (1) Ensure the printer is installed on a level surface, capable of supporting its weight. Failure to do so could cause the printer to tip or fall. (2) printer contains many rolle[...]

1-4 Precautions Service Manual 1.2.5 Disregarding this warning may cause bodily injury (1) Be careful with the high temperature part. The fuser unit works at a high temperature. Use caution when working on the printer . Wait for the fuser to cool down before disassembly . (2) Do not put finger or hair into the rotating parts. T ake care when using [...]

1-5 Precautions Service Manual 1.3 ESD Precautions Certain semiconductor devices can be easily damaged by static electricity . Such components are commonly called “Electrostatically Sensitive (ES) Devices”, or ESDs. Examples of typical ESDs are: integrated circuits, some field effect transistors, and semiconductor “chip” components. The tec[...]

2 2 2-1 Samsung Electronics Reference Information Service Manual 2. Reference Information This chapter contains the tools list, list of abbreviations used in this manual, and a guide to the location space required when installing the printer . A definition of tests pages is also included. 2.1 T ool for T roubleshooting The following tools are recom[...]

2-2 Reference Information Samsung Electronics Service Manual 2.2 Acronyms and Abbreviations The table in the below explains abbreviations used in this service manual. The contents of this service manual are declared with abbreviations in many parts. Please refer to the table. ADC Analog-to-Digital-Conversion AP Access Point AC Alternating Current A[...]

2-3 Samsung Electronics Reference Information Service Manual IPC Inter Process Communication IPM Images Per Minute LCD Liquid Crystal Display LED Light Emitting Diode LSU Laser Scanning Unit MB Megabyte MFP Multi-Functional Product MHz Megahertz MPBF Mean Prints Between Failure MPF/MPT Multi Purpose Feeder/Multi Purpose T ray NIC Network Interface [...]

2.3 Select a location for the printer • Leave enough room to open the printer trays, covers, and allow for proper ventilation. (see diagram below) • Provide the proper environment : - A firm, level surface - Away from the direct airflow of air conditioners, heaters, or ventilators - Free of extreme fluctuations of temperature, sunlight, or humi[...]

2-5 Samsung Electronics Reference Information Service Manual 2.4 The Sample Pattern for the T est The sample pattern shown in below is the standard pattern used in a factory . The contents of the life span and the printing speed are measured with the pattern shown in below . (The picture in the manual is 70% size of the actual A4 size.) 2.4.1 A4 5%[...]

2-6 Reference Information Samsung Electronics Service Manual 2.4.2 A4 2% Pattern[...]

2-7 Samsung Electronics Reference Information Service Manual 2.4.3 A4 IDC 5% Patten[...]

2-8 Reference Information Samsung Electronics Service Manual MEMO[...]

3 3 3-1 Samsung Electronics Specifications Service Manual 3. Specifications Specfications are correct at the time of printing. Product specifications are subject to change without notice. See below for product specifications. 3.1 General Specifications Items SCX-4100 Remarks General Major Features Copier ,Print,Scan Size (W*D*H) 16.6"x15.8&quo[...]

3-2 Specifications Samsung Electronics Service Manual 3.3 Scan Specification 3.2 Print Specification Items SCX-4100 Remarks PRINT Print Speed 15ppm/Ltr , 14ppm/A4 Print Method Laser Print Language SPL Power Save Y es(5/10/15/30/45min.) Resolution Normal 600 x 600 dpi RET No T oner Save Y es LCD Only (T oner Save On/Off Setting method is in the Menu[...]

3-3 Samsung Electronics Specifications Service Manual 3.4 Copy Specification Items SCX-4100 Remarks COPY Copy Quality Selection or T ext 600x300dpi Original Image type T ext/Photo 600x300dpi selection Mode Photo 600x600dpi for Platen FCOT Stand by Approx. 12 seconds From Cold Status Less than 54 seconds Copy Speed / Letter SDMC at all mode 15cpm/Lt[...]

3-4 Specifications Samsung Electronics Service Manual 3.5 Paper Handiling Specification Items SCX-4100 Remarks Paper Handling Capacity( 20lbs) Main T ray 250sheets Bypass(MP Tray) Single Sheet Optional Cassette No Output Capacity Face Down: 50Sheets/20lb Face Up: 1Sheet Output Control Face down/Face up Paper Size Main T ray Legal,A4,Letter , Folio,[...]

3-5 Samsung Electronics Specifications Service Manual 3.6 Other Specification Items SCX-4100 Remarks Software WHQL Win 3.x No Win 95 Y es Win 98&WinME Y es Win NT 4.0 Y es Win 2000 Y es Win XP Y es Mac Y es Mac Printer Only Linux Y es Print, Scan Printer Y es Printer driver only for WinXP WIA Scanner No Driver Printer SPL Package TW AIN Y es WI[...]

3-6 Specifications Samsung Electronics Service Manual MEMO[...]

4 4 4-1 Samsung Electronics Summary of product Service Manual 4. Summary of Product This chapter describes the functions and operating principles of the main component. 4.1 Printer Components 4.1.1 Front View[...]

4-2 Summary of Product Samsung Electronics Service Manual 4.1.2 Rear View[...]

4-3 Samsung Electronics Summary of product Service Manual 4.1.3 Control Panel[...]

4-4 Summary of Product Samsung Electronics Service Manual 4.2 System Layout SCAN P ART[...]

4-5 Samsung Electronics Summary of product Service Manual 4.2.1 Paper Feed Mechanism The printer has a universal cassette which automatically loads paper and a manual feed which supplies paper single sheet at a time. The cassette has a friction pad which separates paper to ensure single sheet feeding, and it has a sensor , which checks when the pap[...]

4-6 Summary of Product Samsung Electronics Service Manual 4.2.4.5 Safety Relevant Facts • T o prevent overheating - 1st protection device: Hardware cuts off when overheated - 2nd protection device: Software cuts off when overheated - 3rd protection device: Thermostat cuts of f mains power to the lamp. • Safety device - Fuser power is cut off wh[...]

4-7 Samsung Electronics Summary of product Service Manual 4.2.6 LSU (Laser Scanner Unit) This is the core of the laser printer . It converts the video data received from the computer into an electrostatic latent image on the surface of the OPC drum. This is achieved by controlling the laser beam and exposing the surface of the OPC drum to the laser[...]

4-8 Summary of Product Samsung Electronics Service Manual 4.2.7 T oner Cartridge The toner cartridge is an integral unit containing the OPC unit and toner unit. The OPC unit consists of the OPC drum and charging roller , and the toner cartridge unit consists of the toner , supply roller , developing roller , and blade (Doctor blade) - Developing Me[...]

4-9 Samsung Electronics Summary of product Service Manual 4.3 Main PBA The Engine Board and Controller Board have been integrated into a single PBA. This consists of the CPU, printer scanner and line control functions. The CPU functions as the bus controller , I/O handler , motor driver and PC inter-fac e. The main board sends the Current Image Vid[...]

4-10 Summary of Product Samsung Electronics Service Manual 4.3.1 ASIC (Chorus2) The Chorus2 (16Bit RISC Processor) ASIC is the main processor controlling the whole system. It controls all of the printing and scanning functions using a system program stored in flash memory . •Main function block • Completely Integrated System for Embedded Applic[...]

4-11 Samsung Electronics Summary of product Service Manual 3) Paper Feeding, T oner Cartridge Sensing When paper passes the actuator on the feed sensor , it is detected by the Photo interrupter . Signal (nP_FEED, PIN 186) monitored by the CPU and this signal starts the process of creating the image after certain delay time If the feed sensor is not[...]

4-12 Summary of Product Samsung Electronics Service Manual 4.4 SMPS & HVPS The SMPS and HVPS are on one integrated board. The SMPS supplies the DC power to the system. It takes either 1 10V or 220V and outputs the +5V and 24V supplies to the main and other PBAs. The HVPS creates the high voltage of THV/MHV/Supply/Dev and supplies it to the tone[...]

4-13 Samsung Electronics Summary of product Service Manual 4.4.1 HVPS(High V oltage Power Supply) 1) T ransfer High V oltage (THV+) - Function : It is this voltage that transfers toner from the OPC Drum to the paper . - Output voltage : Maximum +5000V ± 5% (no load, variable duty cycle) - Error : IF THV (+) is not present, low density printing occ[...]

4-14 Summary of Product Samsung Electronics Service Manual 4.4.2 SMPS (Switching Mode Power Supply) This is the power source for the whole system. It is an independent module so that it is possible to use it for common use. It is mounted at the bottom of the set. It consists of the SMPS section, which supplies the DC power to drive the system, and [...]

4-15 Samsung Electronics Summary of product Service Manual 6) Feature - Insulation resistance : over 50M Ω (at DC500V) - Insulation retest pressure : Must be no problem within 1min. (at 1500Vzc, 10mA) - Leakage voltage : under 3.5mA - Running voltage : under 40A peak (at 25 ° c, Cold start) Under 60A peak (in other conditions) - Rise T ime : Wit[...]

4-16 Summary of Product Samsung Electronics Service Manual 4.5 Engine F/W 4.5.1 Feeding If feeding from the cassette the drive of the pickup roller is controlled by controlling the pick-up solenoid. The on/off of the solenoid is controlled by controlling the general output port or the external output port. If feeding from the manual feeder the set [...]

4-17 Samsung Electronics Summary of product Service Manual 4.5.4 Fusing The temperature of the heat roller's surface is detected according to the resistance value of the thermistor . The thermistor resistance is measured using the A/D converter and thus the CPU can determine the temperature of the heat roller . The AC power is controlled by co[...]

4-18 Summary of Product Samsung Electronics Service Manual MEMO[...]

5 5 5-1 Samsung Electronics Disassembly and Reassembly Service Manual 5. Disassembly and Reassembly 5.1 General Precautions on Disassembly When you disassemble and reassemble compo- nents, you must use extreme caution. The close proximity of cables to moving parts makes proper routing a must. If components are removed, any cables disturbed by the p[...]

5-2 Disassembly and Reassembly Samsung Electronics Service Manual 5.2 Front and Rear Cover Units 1. T ake the Cassette out of the printer . 2. Remove the Front Cover in the direction of arrow . 3. Remove the 4 screws securing the Rear Cover and remove it, as shown below . Cassette Rear Cover[...]

5-3 Samsung Electronics Disassembly and Reassembly Service Manual 5.3 Side Covers 1. Before you remove the Side Cover(Left Cover , Right Cover), you should remove: -Rear Cover (see page 5-2) -Front Cover (see page 5-2) 2. Remove 1 screw at the front of the unit. Unclip the right cover along the top edge and remove it from the Frame Assembly . 3. Re[...]

5-4 Disassembly and Reassembly Samsung Electronics Service Manual 5.4.1 Remove Scanner Ass’y 1. Before you remove the Scanner Ass'y , you should remove: -Rear Cover (see page 5-2) -Side Cover(Left Cover , Right Cover)(see page 5-3) 2. Remove the 2 connectors from the main PBA and release the ground wire from the Motor Drive Ass’y as shown [...]

5-5 Samsung Electronics Disassembly and Reassembly Service Manual 5.4.2 Dismantle Scanner Ass’y 1. Lift the Platen Cover upward and remove it. 2. Release 8 clips (2 per side) securing the scanner upper frame to the scanner lower frame and remove the upper frame 3. Remove the CCD Cable, as shown below . Platen Cov er Scan Upper < Caution > 1[...]

5-6 Disassembly and Reassembly Samsung Electronics Service Manual 4. Pull up the CCD Shaft and take out the Scanner Module. 5. Push the Belt Holder and take out the Belt, as shown below . 6. Remove the Pulley Idle, as shown below . 7. Remove the 2 screws and take out the Scan Motor Ass'y . Belt Pulley Idle Pulley Bracket Spring ETC Belt Scanne[...]

5-7 Samsung Electronics Disassembly and Reassembly Service Manual 5.5 Middle Cover 1. Disconnect the OPE harness from the Main PBA and remove the 4 screws securing the Middle Cover . Remove it, as shown below . 2. Remove the 4 screws securing the OPE Unit from the Middle Cover . Middle Cover OPE Harness OPE Unit[...]

5-8 Disassembly and Reassembly Samsung Electronics Service Manual 1. Before you remove the Fuser , you should remove: -Rear Cover (see page 5-2) 2. Unplug two connectors from the boards and then remove 4 screws. Remove the Fuser Ass ’ y taking care not to damage the Exit Sensor . 3. Remove 2 screws and take the Thermostat out of the Fuser . 4. Re[...]

5-9 Samsung Electronics Disassembly and Reassembly Service Manual 6. Remove 4 screws and divide the Fuser into two parts. 7. Unwrap the Thermistor Harness, as shown below . 8. Remove the Thermister from the Fuser Cover . Fuser Cover Thermister Thermister Harness[...]

5-10 Disassembly and Reassembly Samsung Electronics Service Manual 5.7 Exit Roller 1. Before you remove the Exit Roller you should remove: - Rear Cover (see page 5-2) - Side Covers (see page 5-3) - Scanner Ass ’ y (see page 5-4) - Middle Cover (see page 5-6) 2. Remove the white Exit Gear , and release a bearing clip at one end then remove the sha[...]

5-11 Samsung Electronics Disassembly and Reassembly Service Manual 5.9 Fan 1. Before you remove the Fan you should remove: - Rear Cover (see page 5-2) - Right Side Cover (see page 5-3) 2. Unplug the connector from the SMPS and remove 1 screw . Then take out the Fan. DC Fan 5.10 Drive Ass’y 1. Before you remove the Drive Ass ’ y , you should rem[...]

5-12 Disassembly and Reassembly Samsung Electronics Service Manual 5.1 1 Engine Shield Ass’y 1. Before you remove the Fuser , you should remove: - Rear Cover (see page 5-2) - Side Covers (see page 5-3) - Fuser Connector (see page 5-7) 2. Remove the 14 screws securing the Engine Shield Ass'y and unplug the all connectors. Then remove the Engi[...]

5-13 Samsung Electronics Disassembly and Reassembly Service Manual 5.13 SMPS 1. Before you remove the SMPS, you should remove: - Rear Cover (see page 5-2) - Side Covers (see page 5-3) - Fuser Connector (see page 5-7) - Engine Shield Ass'y (see page 5-1 1) 2. Unplug 1 connector and remove 3 screws then take the Inlet Bracket out. 3. Remove 1 sc[...]

5-14 Disassembly and Reassembly Samsung Electronics Service Manual 5.14 T ransfer Roller 1. Before you remove the T ransfer Roller you should remove: - Rear Cover (see page 5-2) - Side Covers (see page 5-3) - Scanner Ass ’ y (see page 5-4) - Middle Cover (see page 5-6) - LSU(see page 5-9) 2. Remove 3 screws and take the T ransfer Earth out. 3. Un[...]

5-15 Samsung Electronics Disassembly and Reassembly Service Manual 5.15 Feed Roller 1. Before you remove the Feed Roller you should remove: - Rear Cover (see page 5-2) - Side Covers (see page 5-3) - Scanner Ass ’ y (see page 5-4) - Middle Cover (see page 5-6) - LSU (see page 5-9) - Drive Ass ’ y (see page 5-10) 2. Remove 2 screws from the Guide[...]

5-16 Disassembly and Reassembly Samsung Electronics Service Manual 7. Remove the Feed Roller and Feed Roller1, as shown below . Feed Roller1 Feed Roller[...]

5-17 Samsung Electronics Disassembly and Reassembly Service Manual 5.16 Pick Up Roller & Solenoid 1. Before you remove the Pick Up Roller and Solenoid you should remove: - Rear Cover (see page 5-2) - Side Covers (see page 5-3) - Scanner Ass ’ y (see page 5-4) - Middle Cover (see page 5-6) - LSU (see page 5-9) - Drive Ass ’ y (see page 5-10)[...]

5-18 Disassembly and Reassembly Samsung Electronics Service Manual MEMO[...]

6 6 6-1 Samsung Electronics Alignment & Adjustments Service Manual 6. Alignment and Adjustments This chapter describes some of the main service procedures including: Using the EDC mode; Clearing paper jam and test patterns. Much of this chapter is also included in the user's guide. 6.1 Engine T est Mode The Engine T ests Mode supplies usef[...]

6-2 Alignment & Adjustments Samsung Electronics Service Manual 6.2 Paper Path SCAN P ART PTL P I C K / R PR CR DR SR TR FR Empty Sensor OPC L S U Fuser Toner Cartridge EXIT Sensor Feed Sensor MP Sensor PTL P I C K / R PR CR DR SR TR FR Empty Sensor OPC L S U Fuser Toner Cartridge EXIT Sensor Feed Sensor MP Sensor PTL P I C K / R PR CR DR SR TR [...]

6-3 Samsung Electronics Alignment & Adjustments Service Manual 6.3 Clearing Paper Jams When a paper jam occurs, "Paper Jam" appears on the display . Refer to the table below to locate and clear the paper jam. T o avoid tearing the paper , pull the jammed paper out gently and slowly . Follow the steps on the next pages to clear the jam[...]

6-4 Alignment & Adjustments Samsung Electronics Service Manual 1 Open and close the front cover . The jammed paper is automatically ejected from the machine. If the paper is not ejected continue to step 2. 2 Gently pull the paper out of the front output tray . Skip to step 9. If you cannot see the jammed paper in the front output tray , continu[...]

6-5 Samsung Electronics Alignment & Adjustments Service Manual NOTE: The fuser area is hot. T ake care when removing paper from the machine. 1 Open the front cover and lightly push down on the cartridge then pull to take it out. 2 Remove the jammed paper by gently pulling it straight out. 3 Replace the toner cartridge and close the front cover [...]

6-6 Alignment & Adjustments Samsung Electronics Service Manual 6.4 Printing the System Data List Y our machine can print the system data report which shows the status of the user-selectable options. Y ou may print this list to confirm your changes after changing any settings. T o print the system data list: 1 Press Menu/Exit until "Report&[...]

6-7 Samsung Electronics Alignment & Adjustments Service Manual 6-7 Samsung Electronics Service Manual COMPONENT REPLACEMENT CYCLE Pick-up Roller 60,000 Pages Paepr Feeding Roller(Friction Pad) 60,000 Pages T ransfer Roller 60,000 Pages Fuser 60,000 Pages T oner Cartridge Original 1,000 Pages Replacement 3,000 Pages 6.7 Consumables and Replaceme[...]

6-8 Alignment & Adjustments Samsung Electronics Service Manual 6.9 Periodic Defective Image If a mark or other printing defect occurs at regular intervals down the page it may be caused by a damaged or contaminated roller . Measure the repetition interval and refer to the table below to identify the roller concerned. No Roller Defective image T[...]

7 7 7-1 Samsung Electronics T roubleshooting Service Manual 7. T roubleshooting 7.1 Printing Problems – Causes and Solutions 7.1.1 V ertical Black Lines and Bands • Description 1. Straight thin black vertical lines occur in the printing. 2. Dark black vertical bands occur in the printing. Digital Printer Digital Printer Digital Printer Digital [...]

7-2 T roubleshooting Samsung Electronics Service Manual 7.1.3 Horizontal Black Bands • Description 1. Dark or blurry horizontal stripes occur in the printing periodically . (These may occur at regular intervals down the page.) Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Check and Cause Solution 1. Bad contacts [...]

7-3 Samsung Electronics T roubleshooting Service Manual 7.1.5 Light Image • Description The printed image is light, with no ghost. Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Check and Cause Solution 1. T oner Save mode enabled 2. Develop roller is contaminated or the toner cartridge is almost empty . 3. Ambien[...]

7-4 T roubleshooting Samsung Electronics Service Manual 7.1.7 Uneven Density • Description Print density is uneven between left and right. Check and Cause Solution 1. The pressure force on the left and right springs of the transfer roller is not even, the springs are damaged, the transfer roller is improperly installed, or the trans- fer roller b[...]

7-5 Samsung Electronics T roubleshooting Service Manual 7.1.9 Ghost (1) • Description Ghost occurs at 75.5 mm intervals of the OPC drum in the whole printing. Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer 75.5 mm Check and Cause Solution 1. Bad contacts caused by contamination from toner particles[...]

7-6 T roubleshooting Samsung Electronics Service Manual 7.1.1 1 Ghost (3) • Description Ghost occurs at 57 mm intervals. Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer 57 mm Check and Cause Solution 1. Disassemble the fuser and remove any contamination on the rollers. Clean any contamination from b[...]

7-7 Samsung Electronics T roubleshooting Service Manual 7.1.14 Stains on Back of Page • Description The back of the page is stained at 46.5 or 58.7 mm intervals. Digital Digital Pri Digital Printer Digital Printer Digital Printer Check and Cause Solution 1. 46.5mm : T ransfer roller is contaminated. 2. 58.7mm : Pressure roller is contaminated. 1.[...]

7-8 T roubleshooting Samsung Electronics Service Manual 7.2.1 White Copy • Description Blank page is printed out when copying. 7.2 Copy Problems 7.2.2 Black Copy • Description Black page is printed out when Copying. Check and Cause Solution 1. Check for CIS problem on the Main PBA. 2. Check shading profile. 1. Check the CIS harness is properly [...]

7-9 Samsung Electronics T roubleshooting Service Manual 7.2.3 Abnormal noise • Description There is noise from the ADF when copying. Check and Cause Solution 1. Check the Scanner Motor , gearbox and rollers. 2. Check the Motor Driver on Driver PBA. 7.2.4 Defective Image Quality • Description The copied image is excessively light or dark Check a[...]

7-10 T roubleshooting Samsung Electronics Service Manual 7.3 Paper Feed problems – Causes and Solutions 7.3.1 Wrong Print Position • Description Printing begins at wrong position on the paper . Check and Cause Solution Wrong sensor timing caused by defective feed sensor actuator . Replace the defective actuator 7.3.2 JAM 0 • Description 1. Pa[...]

7-11 Samsung Electronics T roubleshooting Service Manual 7.3.4 JAM 2 • Description 1. Recording paper is jammed in front of or inside the fuser . 2. Recording paper is stuck in the discharge roller and in the fuser just after passing through the Actuator-Feed. PTL P I C K / R PR CR DR SR TR FR Empty Sensor OPC L S U Fuser Toner Cartridge EXIT Sen[...]

7-12 T roubleshooting Samsung Electronics Service Manual 7.3.5 Multi-Feeding • Description Multiple sheets of paper are fed at once. Check and Cause Solution 1. Check that the paper size guides are set correctly (cassette and MPF tray). 2. Solenoid malfunction (the solenoid does not work properly). 3. Friction Pad is contaminated. 4. Paper has a [...]

7-13 Samsung Electronics T roubleshooting Service Manual 7.3.7 Paper rolled on the OPC Drum • Description Paper is rolled up in the OPC. Check and Cause Solution 1. Paper is too thin. 2. The face of paper is curled. 1. Use paper that conforms to the printer specification. 2. Ensure paper is stored properly to prevent curl. Note. T o remove paper [...]

7-14 T roubleshooting Samsung Electronics Service Manual 7.4 Printer Faults – Causes and Solutions 7.4.1 Fuser Error • Description A message "Open Heat Error/Over heat/Heating Error' is displayed in the LCD panel. Check and Cause Solution 1. Thermostat, fuser power cable or heat lamp is open circuit. 2. Thermistor is open circuit. 3. [...]

7-15 Samsung Electronics T roubleshooting Service Manual 7.4.3 Fuser gear melts due to overheating causing Paper Jam. • Description Constant Jam where paper is entering Fuser unit. Fuser rollers do not turn Check and Cause Solution 1. Check the Heat Lamp, thermostat and thermistor 1. Use EDC Mode to test the fuser . Replace Fuser unit Replace SMP[...]

7-16 T roubleshooting Samsung Electronics Service Manual 7.4.5 Paper Empty without indication • Description The paper empty message does not appear in the LCD when the paper cassette is empty . Check and Cause Solution 1. Deformed paper sensor actuator or faulty sensor . 2. SMPS PBA or Main PBA is defective . 1. Replace the defective actuator . 2[...]

7-17 Samsung Electronics T roubleshooting Service Manual 7.4.7 No error message when the cover is open • Description The Cover Open message does not appears on the LCD even when the print cover is open. Check and Cause Solution 1. The ‘Open Cover’ microswitch may be stuck or faulty 2. Check the connector and cables between Switch and main PBA[...]

7-18 T roubleshooting Samsung Electronics Service Manual 7.4.8 Defective motor operation • Description Main motor is faulty and paper does not feed into the printer , resulting in Jam 0' Check and Cause Solution 1. The main motor harness or Motor PCB may be faulty . 1. Check the motor harnesses and connectors, replace if defective.. If the p[...]

7-19 Samsung Electronics T roubleshooting Service Manual 7.4.10 Printed V ertical Lines become curved • Description When printing, vertical lines are not straight. Check and Cause Solution 1. Check stability of 24V supply to LSU. 1. 24V stable - Replace LSU. 24V unstable replace SMPS, if the problem persists replace the main PBA.[...]

7-20 T roubleshooting Samsung Electronics Service Manual 7.5 T oner Cartridge Service Only toner cartridges supplied by Samsung should be used. Printing defects or set damage caused by the use of non-approved toner cartridges or un-licensed toner refills are not covered by the guarantee. 7.5.1 Precautions on Safe-keeping of T oner Cartridge Excessi[...]

7-21 Samsung Electronics T roubleshooting Service Manual 7.5. 4 Signs and Measures of Poor toner cartridge Fault Signs Cause & Check Solution Light image and partially blank image (Cartridge life is ended.) T oner Contamination • The printed image is light or dirty and untidy . • Parts of the image are not printed. • Periodically a "[...]

7-22 T roubleshooting Samsung Electronics Service Manual Fault Signs Cause & Check Solution White Black spot Recycled product • Light or dark black dots on the image occur periodically . • White spots occur in the image periodically . • Poor appearance of the toner cartridge. • Dirty or rough printouts. • Bad background in the image. [...]

7-23 Samsung Electronics T roubleshooting Service Manual Fault Signs Cause & Check Solution Ghost & Image Contamination • The printed image is too light or dark, or partially contaminated black. • T otally contaminated black. (Black image printed out) • The density of printouts is too dark and ghost occurs. 1. The printed image is too[...]

7-24 T roubleshooting Samsung Electronics Service Manual 7.6 Software Problems – Causes and Solutions 7.6.1 The printer is not working (1) • Description While Power turned on, the printer is not working in the printing mode. Check and Cause Solution 1. Run Self-T est Mode: using the menu buttons print the test page. (Menu, Enter , Enter). 2. Ch[...]

7-25 Samsung Electronics T roubleshooting Service Manual 7.6.2 The printer is not working (2) • Description After receiving the print command there is no response at all or print speed is low due to wrong setup of the environment rather than malfunction of the printer itself. Check and Cause Solution 1. Ensure you have suf ficient free hard disk [...]

7-26 T roubleshooting Samsung Electronics Service Manual 7.6.3 Abnormal Printing • Description Printing does not work – even after replacing the cable Printer does not work at all or strange fonts are printed, Check and Cause Solution 1. Set up the parallel port using CMOS SETUP . 2. Printer Driver Error . 3. Error message “insuf ficient memo[...]

7-27 Samsung Electronics T roubleshooting Service Manual 7.6.4 SPOOL Error • Description SPOOL (simultaneous peripheral operations online) is the process W indows uses to manage print jobs. Jobs are processed and then stored on the hard disk until the printer is ready to accept them Check and Cause Solution 1. Insufficient space on the hard disk [...]

7-28 T roubleshooting Samsung Electronics Service Manual MEMO[...]

8 8 8-1 Samsung Electronics Exploded View & Parts List Service Manual 8. Exploded V iews and Parts List 8.1 Main Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page(8-2) 8.2 Frame Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page(8-4) 8.3 Scanner Unit [...]

8-2 Exploded View & Parts List Samsung Electronics Service Manual 8.1 Main Assembly 0 10 1 4 6 T oner Cartridge 5-1 5-2 5-4 5-3 5-4 5-5 5 3 8 9 16 13 17 Frame 11 7 8-1 8-3 8-2 12 15 14 2 2-2 2-1[...]

8-3 Samsung Electronics EXPLODED VIEW & P ARTS LIST Service Manual Main Assembly Parts List SA : Service A vailable O : Service available X : Service not available No. Description SEC.Code Q’ty SA Remark 0 SCX-4100 1 MEA UNIT -COVER MIDDLE JC97-01958A 1 O SCX-4100 2 MEA UNIT -COVER REAR JC97-01959A 1 O SCX-4100 2-1 COVER-M_REAR JC63-00475A 1 [...]

8-4 Exploded View & Parts List Samsung Electronics Service Manual 8.2 Frame Assembly 1 4 3 6 7 61 12 6 9 53 9 51 13 14 15 18 19 21 22 23 24 25 26 37 31 27 28 29 29 30 58 63 58-1 58-2 58-3 58-4 58-5 58-6 58-6 58-4 40 41 56 42 44 53 45 46 47 48 59 59-1 59-2 59-3 59-4 50 52 52 54 2 55 11 10 8 35 36 Transfer Roller 38 60 39 43 32 34 33 62 49 49-3 4[...]

8-5 Samsung Electronics Exploded View & Parts List Service Manual Frame Unit Assembly Parts List SA : Service A vailable O : Service available X : Service not available No. Description SEC.Code Q’ty SA Remark 0 ELA UNIT -FRAME LOWER, 1 10V JC96-03137A 1 O 1 10V ELA UNIT -FRAME LOWER, 220V JC96-03137B 1 O 220V 1 FRAME-M-BASE JC61-00579A 1 O 2 [...]

8-6 Exploded View & Parts List Samsung Electronics Service Manual Frame Unit Assembly Parts List(Cont.) SA : Service A vailable O : Service available X : Service not available No. Description SEC.Code Q’ty SA Remark 39 IPR-P-GROUND_FUSER JC70-00310A 1 O 40 SHAFT -FEED IDLE JC66-00527A 1 O 41 BUSH-M-FEED IDLE JC61-00585A 2 O 42 SPRING ETC-TR J[...]

8-7 Samsung Electronics Exploded View & Parts List Service Manual 8.3 Scanner Unit Assembly 0 1 2 4 5 28 13 21 23 20 25 27 14 15 12 10 9 7 9 8 11 12 29 17 24 19 16 18 26 20 22 3[...]

8-8 Exploded View & Parts List Samsung Electronics Service Manual Scanner Unit Assembly Parts List SA : Service A vailable O : Service available X : Service not available No. Description SEC.Code Q’ty SA Remark 0 UNIT SCAN JC96-03136A 1 O SCX-4100 1 COVER-M-PLA TEN JC63-00454A 1 X 2 SHEET -WHITE SPONGE JC63-00209A 1 O 3 HINGE PIVOT JC61-00929[...]

8-9 Samsung Electronics Exploded View & Parts List Service Manual 8.4 Fuser Unit Assembly 1 32 3 2 34 4 5 31 32 16 19 6 33 7 8 9 10 12 13 26 20 15 21 22 23 24 25 27 28 31 29 30 37 S2 39 14 31 11 35 40 40 S3 S3 41 40 39 38 0 18 17 39[...]

8-10 Exploded View & Parts List Samsung Electronics Service Manual No. Description SEC.Code Q’ty SA Remark 0 ELA HOU-FUSER_220V JC96-03135B 1 O 220V ELA HOU-FUSER_1 10V JC96-03135A 1 O 1 10V 1 COVER-M-FUSER JC63-00478A 1 X 2 HOLDER-M-PLA TE CLA W JC61-00584A 4 X 3 SPRING ETC-CLA W JC61-00064A 4 X 4 PMO-ROLLER EXIT JC72-40361A 2 X 5 SPRING ETC[...]

8-11 Samsung Electronics Exploded View & Parts List Service Manual No. Description SEC.Code Q’ty SA Remark 36 W ASHER-PLAIN 6031-001051 1 X 37 LABEL(R)-HV FUSER JC68-00407A 1 X 38 SCREW-T APTITE 6006-001078 1 X 39 SCREW-MACHINE 6006-001 193 5 X 40 SCREW-T APTITE 6603-000269 6 X 41 SCREW-T APTITE 6003-000196 1 X Fuser Unit Assembly Parts List [...]

8-12 Exploded View & Parts List Samsung Electronics Service Manual 8.5 Middle Cover Unit Assembly 0 5 2 3 4 7 9 8 10 11 12 1 5 6[...]

8-13 Samsung Electronics Exploded View & Parts List Service Manual Middle Cover Unit Assembly Parts List SA : Service A vailable O : Service available X : Service not available No. Description SEC.Code Q’ty SA Remark 0 MEA UNIT -COVER MIDDLE JC97-01958A 1 O 1 COVER-M_MIDDLE JC63-00473A 1 X 2 PMO-ST ACKER JC72-01340A 1 X 3 STOPPER-M-LEVER JC61[...]

8-14 Exploded View & Parts List Samsung Electronics Service Manual 8.6 Drive Unit Assembly 0 1 2 3 4 4 5 6 7 8 9 HARNESS-MOTOR 5 No. Description SEC.Code Q’ty SA Remark 0 ELA UNIT -DRIVE JC96-03138A 1 O 1 BRACKET -P-GEAR 1400 JC61-00598A 1 O 2 GEAR-RDCN 53/26 JC66-00388A 1 O 3 GEAR-RDCN 1 13/33 JC66-00391A 1 O 4 GEAR-RDCN 57/18 JC66-00389A 2 [...]

8-15 Samsung Electronics Exploded View & Parts List Service Manual 8.7 Cassette Unit Assembly 0 1 4 19 5 6 7 8 2 9 10 20 13 11 12 14 16 18 3 15 17[...]

8-16 Exploded View & Parts List Samsung Electronics Service Manual No. Description SEC.Code Q’ty SA Remark 0 MEA UNIT -CASSETTE_MB JC97-01914A 1 O 1 ADJUST -M-CASSETTE_L JC70-00300A 1 O 2 ADJUST -M-CASSETTE_R JC70-00301A 1 O 3 GEAR-PINION JG66-40003A 1 3 GEAR-PINION JG66-40003A 1 O 4 IPR-PLA TE P AD JC70-00314A 1 O 5 RPR-FRICTION P AD JC73-00[...]

9 9 9-1 Samsung Electronics Block Diagram Service Manual 9. Block Diagram[...]

1 1 0 0 10-1 Samsung Electronics Connection Diagram Service Manual 10. Connection Diagram 1: GND 2: TX 3: RST 4: RX 5: 5V 1: nP_EMPTY 2: nP_FEED 3: 5V 4: 5V 5: GND 6: GND 7: 3.3V 8: GND 9: GND 10: GND 1 1: 24VS 12: 24VS 13: MANUAL 14: 24V 15: OPE_RX 16: THV_REED 17: nOPE_RST 18: THV_PWM 19: THV_EN 20: BIAS_PWM 21: MHV_PWM 22: OPE_TX 23: 5V 24: F AN[...]