Page 2 - ELECTRONICS
ELECTRONICS Samsung Electronics Co.,Ltd. November. 2005 Printed in Korea.VERSION NO. : 1.00 CODE : JC-0155 C * This service manual is a property of Samsung Electronics Co., Ltd. Any unauthorized use of Manual can be punished under applicableinternational and/or domestic law. * This service manual is...
Page 3 - Contents; Product Specification
Contents 1. Precautions 1.1 Safety Warning 1-1 1.2 Caution for safety 1-2 1.3 ESD Precautions 1-5 1.4 Super Capacitor or Lithium Battery Precautions 1-5 2. Product Specification 2.1 Product Overview 2-1 2.2 Specifications 2-2 3. System Overview 3.1 System Outline 3-1 3.2 H/W Structure abd Descriptio...
Page 4 - Continued; Disassembly and Reassembly
Continued 5. Disassembly and Reassembly 5.1 General Precautions on Disassembly 5-1 5.2 Front Cover 5-2 5.3 Rear Cover 5-3 5.4 DC Fan 5-4 5.5 Right Side Cover 5-5 5.6 Left Side Cover 5-6 5.7 Scanner Unit 5-7 5.8 OPE Unit 5-10 5.9 Middle Cover Unit 5-11 5.10 Fuser 5-12 5.11 Exit Roller 5-14 5.12 LSU 5...
Page 5 - diagram
Continued 7. Block diagram 7.1 System Block Diagram 7-1 8. Exploded Views & Parts List 8.1 Exploded Views and Parts List 8-1 9. Connection Diagram 9.1 SCX-4200 Connection Diagram 9-1 10. Schematic Diagram 10.1 Main Board 10-1 10.2 OPE Circuit Diagram 10-8 10.3 SMPS-110V 10-9 10.3 SMPS-220V 10-13...
Page 6 - Precautions; Samsung Electronics
Precautions Samsung Electronics Service Manual 1-1 1 1 1. Precautions In order to prevent accidents and to prevent damage to the equipment please read the precautions listedbelow carefully before servicing the printer and follow them closely. 1.1 Safety Warning (1) Only to be serviced by appropriate...
Page 7 - Caution for safety; and if swallowed you should contact a doctor.; Electric Shock and Fire Safety Precautions; to overheat and potentially cause a fire.
Samsung Electronics Service Manual Precautions 1-2 1.2 Caution for safety 1.2.1 Toxic 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...
Page 8 - the printer to tip or fall.
Precautions Samsung Electronics Service Manual 1-3 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 co...
Page 9 - Disregarding this warning may cause bodily injury
Samsung Electronics Service Manual Precautions 1-4 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 cooldown before disassembly. (2) Do not...
Page 10 - Use only a grounded tip soldering iron to solder or desolder ESDs.; Super Capacitor or Lithium Battery Precautions
Precautions Samsung Electronics Service Manual 1-5 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 fieldeffec...
Page 11 - Product Specifications; Service Manual; Item Descriptions; Product Specification; Product Overview
Product Specifications Samsung Electronics Service Manual 2-1 2 2 Item Descriptions Remark Basic Model SCX-4200/SEE Series Model SCX-4200 Market of Sailes Persnal user MFP(Low Price for small work Group.) Specification 18ppm(Ltr. 19ppm), Chorus2(CPU : Use 16/32 Bit RISC Processor) 1K(initial), 3K(sa...
Page 12 - Items
Samsung Electronics Service Manual Product Specifications 2-2 2.2 Specifications Specfications are correct at the time of printing. Product specifications are subject to change without notice. See below forproduct specifications. 2.2.1 General Specifications Items SCX-4200 Remarks General Major Feat...
Page 16 - Accessory Items
Samsung Electronics Service Manual Product Specifications 2-6 2.2.6 Other Specification Items SCX-4200 Remarks Software O.S Win 2.x No *Dos(No) Win 95 No Win 98&WinME Yes Win NT 4.0 No Win 2000 Yes Win XP Yes Mac Yes Print, Scan Linux Yes Print, Scan Driver Printer SPL TWAIN Yes WIA Yes Applicat...
Page 17 - System Overview
System Overview Samsung Electronics Service Manual 3-1 3 3 3. System Overview This chapter describes the functions and operating principles of the main components. 3.1 System Outline 3.1.1 Front View
Page 21 - - Feeding Method: Universal Cassette Type
System Overview Samsung Electronics Service Manual 3-5 3.1.4.1 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...
Page 22 - ) Safety Relevant Facts
Samsung Electronics Service Manual System Overview 3-6 4) Pressure roller The Pressure Roller mounted under the heat roller, it is made of a silicon resin, and the surface of the roller istubed with Teflon. This ensures that toner does not adhere to the roller surface. 5) Safety Relevant Facts • To ...
Page 24 - - Developing Method: Non magnetic 1 element contacting method
Samsung Electronics Service Manual System Overview 3-8 3.1.4.7 Toner Cartridge The toner cartridge is an integral unit containing the OPC unit and toner unit. The OPC unit consists of the OPCdrum and charging roller, and the toner cartridge unit consists of the toner, supply roller, developing rolle...
Page 25 - - Main function block
System Overview Samsung Electronics Service Manual 3-9 3.2 H/W Structure and Descriptions SCX-4200 is roughly made up Main Control part, Operation Panel part, Scanner part, PC interface part andPower part. Each Part is separated Module which focus on common and standard design of different kind prod...
Page 27 - * Scan Image Control Specification
System Overview Samsung Electronics Service Manual 3-11 3.2.2 Scan Part 1) Pictorial signal input part: output signal of CIS passes through Bypass Cap change to ADC at IP Main and defined signal between AFE and IP Main processes the Image signal. When AFE accept each pixel, CDS(Correlated Double Sam...
Page 29 - Chorus 2 Block Diagram
System Overview Samsung Electronics Service Manual 3-13 Boundary Scan ARM7TDMI TAP Controller General Purpose I/O Bus Arbiter Write Buffer ARM7TDMI CPU Core Cache 4K Byte CPU Unit System Timer (4-ch) GPIO Controller Watchdog Timer 10bit ADC Rotator RTC (Real Time Clock) JTAG AIN[3:0] General DMA (2-...
Page 33 - ITEM
System Overview Samsung Electronics Service Manual 3-17 Consumption Power Length of Power Cord : 1830 50mm Power Switch: Use Feature - Insulating Resistance: 100 or more (at DC 500V) - Insulating revisiting pressure: Must be no problem within 1 min. (at 1,000V-LV / 1,500Vac-HV,10mA) - Leaking Curren...
Page 34 - - High Repetive Peak Off State Voltage : Min 600V
Samsung Electronics Service Manual System Overview 3-18 3.2.7 FUSER AC POWER CONTROL Fuser(HEAT LAMP) gets heat from AC power. The AV power controls the switch with the Triac, a semiconductorswitch. The ‘ON/OFF control’ is operated when the gate of the Triac is turned on/off by Phototriac (insulting...
Page 35 - The following diagram shows the Engine Control System.; Print Interface Control Module; Sensors signals
System Overview Samsung Electronics Service Manual 3-19 3.3 S/W Structure and Descriptions 3.3.1 Architecture The following diagram shows the Engine Control System. Fig 1. The architecture of the engine firmware Main F/W of the printer controller Print Interface Control Module Engine Print Processin...
Page 36 - - Control the HVPS for the Developer Process
Samsung Electronics Service Manual System Overview 3-20 3.3.2 S/W Overview Engine Control F/W is executed every 10msec by the timer interrupt of the main system. And it consists of 4 control modules. Power on Initial, Engine Print Processing Control, Print Interface Control andEngine Unit Control Mo...
Page 40 - Functional Requirements for LSU Control; It uses the single beam .
Samsung Electronics Service Manual System Overview 3-24 3.3.4 Functional Requirements for LSU Control LSU receives the image data from PVC and make the latent image on OPC surface. It uses the single beam . The Eiger has many different registers for LSU. These registers are in manual book of CHORUS2...
Page 41 - Functional Requirements of Environment Recognition
System Overview Samsung Electronics Service Manual 3-25 3.3.5 Functional Requirements of Environment Recognition It is intended to gain the index to indicate the inner environment in a present machine. The engine is divided intoseveral levels with the index. It is used to control high-voltage values...
Page 42 - Functional Requirements of HVPS Control; There are 3 kinds of high-voltages as follows:; Functional Requirements of Power Save Mode
Samsung Electronics Service Manual System Overview 3-26 3.3.6 Functional Requirements of HVPS Control The engine supplies the developer unit with high voltage through the HVPS unit in order to form the image on thepaper fed through the paper pass. So the engine-control f/w supplies the high voltage ...
Page 43 - Functional Requirements of Toner Cartridge; The Fan activated at that time warmming_up and printing.
System Overview Samsung Electronics Service Manual 3-27 3.3.8 Functional Requirements of Toner Cartridge 3.3.8.1 Installation Toner Cartridge The engine of the Eiger doesn’t check it but the main f/w checks it. The method to check whether it is new or old isthe crum. The crum stores the ID, the opc ...
Page 46 - The errors related to LSU are as follows:
Samsung Electronics Service Manual System Overview 3-30 3.3.16 LSU Error The errors related to LSU are as follows: By LReady: When the printing is started, the engine drives the polygon motor of LSU. After the specified time iselapsed, if the motor is not in a ready status, the engine detects the er...
Page 47 - Alignment and Adjustmens; Alignment and Adjustments; To enter the Engine Test mode; Main Menu
Alignment and Adjustmens Samsung Electronics Service Manual 4-1 4 4 4. 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. 4.1 Engine Test Mo...
Page 48 - occurs if the sensor is not operated within a certain time)
Samsung Electronics Service Manual Alignment and Adjustmens 4-2 4.2 Paper Path SCAN PART Paper Input (Cassette) Paper Input (Manual Feeder) Paper Out (Face Down) Paper Em pty Sensor (Manual) Paper Em pty Sensor (Cassette) Paper Feeding Sensor Paper Exit Sensor Paper Out (Face Up) SCAN PART SCAN PART...
Page 49 - Clearing Paper Jams; Message
Alignment and Adjustmens Samsung Electronics Service Manual 4-3 4.3 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. To avoid tearing the paper, pull the jammed paper out gently and slowly. Follow the...
Page 51 - NOTE: The fuser area is hot. Take care when removing; In the Fuser Area or Around the Toner Cartridge
Alignment and Adjustmens Samsung Electronics Service Manual 4-5 NOTE: The fuser area is hot. Take 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 ...
Page 52 - Printing the System Data List
Samsung Electronics Service Manual Alignment and Adjustmens 4-6 4.4 Printing the System Data List Your machine can print the system data report which shows the status of the user-selectable options. You may print thislist to confirm your changes after changing any settings. To print the system data ...
Page 53 - COMPONENT; Consumables and Replacement Parts; LCD; The LCD Status Display by Each Error
Alignment and Adjustmens Samsung Electronics Service Manual 4-7 COMPONENT REPLACEMENT CYCLE Pick-up Roller 50,000 Pages Paepr Feeding Roller(Friction Pad) 50,000 Pages Transfer Roller 50,000 Pages Fuser 50,000 Pages Toner Cartridge Original 1,000 Pages Replacement 3,000 Pages 4.7 Consumables and Rep...
Page 54 - Periodic Defective Image; Roller; PTL
Samsung Electronics Service Manual Alignment and Adjustmens 4-8 4.9 Periodic Defective Image If a mark or other printing defect occurs at regular intervals down the page it may be caused by a damaged orcontaminated roller. Measure the repetition interval and refer to the table below to identify the ...
Page 55 - Display Meaning
Alignment and Adjustmens Samsung Electronics Service Manual 4-9 4.10 Error Message Display Meaning Suggested solutions Door Open The front cover is not securely latched. Close the cover until it locks into place. Hsync Error A problem has occurred in the LSU (Laser Scanning Unit). Unplug the power c...
Page 56 - DIRECT KEY
2nd level 3rd level 4th level Default Value Descriptions Upper Level -- Upper Level Left/Right && Enter -- ඖ 16 Character Left/Right Enter Menu 1.Reduce/Enlarge Original(100%) 100% A4 ױ LTR(94%) EXE ױ LTR(104%) 50%150%200%Custom:50-200% 1 Normal 2 Dark 3 Light 1 Text * Default 2 Text/Photo 3...
Page 57 - ڌډڞڪګڴٻڟڤڭڠڞگٻڦڠڴ; ڍډڞڪڨڨڪکٻڟڤڭڠڞگٻڦڠڴ; ڎډڮۏڼۏېێٻڧڠڟ
;ΒΔΙΚΟΖ͑͑ͺ͵ͽͶ͑ΕΤΚΡΝΒΪ ڭڠڜڟڴٻٻٻڌڋڋڀٻٻٻٻٻٻٻٻٻګډڌ ͵ͺͶʹ΅͑ͼͶΊ ڌډڞڪګڴٻڟڤڭڠڞگٻڦڠڴ notice ڤۉٻۀڼھۃٻڧڞڟٻڿۄێۋۇڼ۔ٻ ڞڪګڴٻٻٻٻٻٻٻٻٻٻٻٻڌڊڌڋ ڤہٻېێۀۍٻۋۍۀێێٻڮۏڼۍۏڊڠۉۏۀۍٻۆۀ۔ ٻٻٻٻٻٻٻٻٻٻٻٻٻٻٻٻٻګډڌ ͝;ΒΔΙΚΟΖ͑ΤΥΒΣΥΤ͑ΔΠΡΪ ڤۉٻۀڼھۃٻڧڞڟٻڿۄێۋۇڼ۔ٻ Ready ڤہٻېێۀۍٻۋۍۀێێٻڮۏۊۋڊڞۇۀڼۍ 100% P.1 ڇڨڼھۃۄۉۀٻێۏۊۋێٻھۊۋ۔ LCD Display ڞۊۋۄۀێ ڞۊۋ...
Page 58 - Disassembly and Reassembly; General Precautions on Disassembly; Check to verify that documents are not stored; Releasing Plastic Latches
Disassembly and Reassembly Service Manual 5-1 Samsung Electronics 5 5 5. Disassembly and Reassembly 5.1 General Precautions on Disassembly When you disassemble and reassemble compo-nents, you must use extreme caution. The closeproximity of cables to moving parts makes properrouting a must. If compon...
Page 59 - To remove the Front Cover, first pull the part below
Service Manual Disassembly and Reassembly 5-2 Samsung Electronics 5.2 Front Cover 1. Take the Cassette out of the printer. 2. Open the Front Cover. 3. To remove the Front Cover, first pull the part below the right side of the Front Cover with a light pressureto the direction of arrow and then remove...
Page 60 - Remove the four screws securing the Rear Cover, as
Disassembly and Reassembly Service Manual 5-3 Samsung Electronics 5.3 Rear Cove 1. Remove the four screws securing the Rear Cover, as shown below. 2. To remove the Rear Cover make sure the Power Switch doesn't get jammed to Rear Cover and thenUnplug the one connector(DC Fan) from the MainPBA, as sho...
Page 61 - First release the harness from the Harness Holder
Service Manual Disassembly and Reassembly 5-4 Samsung Electronics 5.4 DC Fan 1. Before you remove the DC Fan, you should remove: - Rear Cover (Refer to 5.3) 2. First release the harness from the Harness Holder and then remove the one screw securing the HarnessHolder and remove it, as shown below. 3....
Page 62 - Before you remove the Right Side Cover, you should
Disassembly and Reassembly Service Manual 5-5 Samsung Electronics 5.5 Right Side Cover 1. Before you remove the Right Side Cover, you should remove: - Front Cover (Refer to 5.2) - Rear Cover (Refer to 5.3) 2. Remove the one screw at the front of the unit. 3. Apply light pressure to the back of the R...
Page 63 - Before you remove the Left Side Cover, you should
Service Manual Disassembly and Reassembly 5-6 Samsung Electronics 5.6 Left Side Cover 1. Before you remove the Left Side Cover, you should remove: - Front Cover (Refer to 5.2) - Rear Cover (Refer to 5.3) 2. Remove the one screw at the front of the unit. 3. Apply light pressure to the back of the Lef...
Page 66 - To remove Belt using a screw driver, remove the Belt
Disassembly and Reassembly Service Manual 5-9 Samsung Electronics 11. To remove Belt using a screw driver, remove the Belt Clip at the center of the Carriage and remove theBelt, as shown below. 12. Take the CIS Shaft out of OPE Lower Unit and then remove the three screws securing the Scan MotorAss'y...
Page 67 - Lift the Platen Cover upward and remove it.
Service Manual Disassembly and Reassembly 5-10 Samsung Electronics 5.8 OPE Unit 1. Lift the Platen Cover upward and remove it. 2. To remove OPE Unit, first pull the part below the front of the OPE Unit with a light pressure to the directionof arrow. 3. Remove the three scrrews securing the OPE PBA a...
Page 68 - Before you remove the Middle Cover Unit, you should
Disassembly and Reassembly Service Manual 5-11 Samsung Electronics 5.9 Middle Cover Unit 1. Before you remove the Middle Cover Unit, you should remove: - Scanner Unit (Refer to 5.7) 2. Remove the four screws securing the Middle Cover Unit and remove it, as shown below. Middle Cover Unit
Page 69 - Unplug the two connectors from the Main PBA and
Service Manual Disassembly and Reassembly 5-12 Samsung Electronics 5.10 Fuser 1. Before you remove the Fuser, you should remove: - Rear Cover (Refer to 5.3) 2. Unplug the two connectors from the Main PBA and SMPS, as shown below. 3. Remove the four screws securing the Fuser and remove it. Notice: Re...
Page 70 - Remove the one screw securing the Gear
Disassembly and Reassembly Service Manual 5-13 Samsung Electronics 6. Remove the one screw securing the Gear RDCN(25/15) and remove it. 7. Remove the four screws and divide the Fuser into two parts. 8. Unwrap the Thermistor Harness, as shown below. 9. Remove the Thermistor from the Fuser Cover. Gear...
Page 71 - Before you remove the Exit Roller, you should
Service Manual Disassembly and Reassembly 5-14 Samsung Electronics 5.11 Exit Roller 1. Before you remove the Exit Roller, you should remove: - Scanner Unit (Refer to 5.7) - Middle Cover Unit (Refer to 5.9) 2. Remove the Exit Gear and Bearing using a screw dri- ver at one end then remove the shaft an...
Page 72 - Remove the one screw securing the CAP LSU and
Disassembly and Reassembly Service Manual 5-15 Samsung Electronics 5.12 LSU 1. Before you remove the LSU, you should remove: - Scanner Unit (Refer to 5.7) - Middle Cover Unit (Refer to 5.9) 2. Remove the one screw securing the CAP LSU and remove it. 3. Unplug the two connectors from the LSU. 4. Unpl...
Page 73 - Unplug the connector from the SMPS and remove the
5.14 Drive Ass'y 1. Before you remove the Drive Ass'y, you shouldremove: . Front Cover (Refer to 5.2) . Rear Cover (Refer to 5.3) . Left Side Cover (Refer to 5.6) 2. Remove the six screws securing the Drive Ass'y. Notice: When refitting the Drive Ass'y tighten the screws in the order that they are n...
Page 74 - Remove the eleven screws securing the Engine
Disassembly and Reassembly Service Manual 5-17 Samsung Electronics 5.15 Engine Shield Ass'y 1. Before you remove the Engine Shield Ass'y, you should remove: - Scanner Unit (Refer to 5.7) - Fuser Connectors (Refer to 5.10.2) 2. Remove the eleven screws securing the Engine Shield Ass'y and unplug the ...
Page 75 - Remove the two screws then take the Inlet Bracket
Service Manual Disassembly and Reassembly 5-18 Samsung Electronics 5.17 SMPS 1. Before you remove the SMPS, you should remove: - Engine Shield Ass'y (Refer to 5.15) 2. Remove the two screws then take the Inlet Bracket out, as shown below. 3. Unplug the Engine Harness from the SMPS and then remove th...
Page 76 - Before you remove the CRUM PCB, you should
Disassembly and Reassembly Service Manual 5-19 Samsung Electronics 5.18 CRUM PCB 1. Before you remove the CRUM PCB, you should remove: - LSU (Refer to 5.12) - Engine Shield Ass'y (Refer to 5.15) 2. Remove the four screws securing the CRUM PCB and remove it, as shown below. CRUM PCB
Page 77 - Before you remove the Transfer Roller, you should
Service Manual Disassembly and Reassembly 5-20 Samsung Electronics 5.19 Transfer Roller 1. Before you remove the Transfer Roller, you should remove: - Scanner Unit (Refer to 5.7) - Middle Cover Unit (Refer to 5.9) - LSU (Refer to 5.12) 2. Remove the three screws and take the Transfer Earth out. 3. U...
Page 78 - Before you remove the Feed Roller, you should
Disassembly and Reassembly Service Manual 5-21 Samsung Electronics 5.20 Feed Roller 1. Before you remove the Feed Roller, you should remove: - Middle Cover Unit (Refer to 5.9) - LSU (Refer to 5.12)- Drive Ass'y (Refer to 5.14) 2. Remove the two screws from the Guide Paper and take it out. 3. Pull up...
Page 79 - Pull the Feed Roller and Feed Roller1, as shown
Service Manual Disassembly and Reassembly 5-22 Samsung Electronics 6. Remove the Feed Gear1 Ass'y, as shown below. 7. Pull the Feed Roller and Feed Roller1, as shown below. Feed Gear1 Ass'y Feed Roller1 Feed Roller
Page 80 - Remove the two screws and then remove the Regi
Disassembly and Reassembly Service Manual 5-23 Samsung Electronics 5.21 Pick Up Roller & Solenoid 1. Before you remove the Pick Up Roller & Solenoid, you should remove: - Middle Cover Unit (Refer to 5.9) - LSU (Refer to 5.12)- Drive Ass'y (Refer to 5.14)- Feed Bracket and Gear (Refer to 5.19...
Page 82 - Troubleshooting; Printing Problems – Causes and Solutions
Troubleshooting Samsung Electronics Service Manual 6-1 6 6 6. Troubleshooting 6.1 Printing Problems – Causes and Solutions 6.1.1 Vertical 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 Printe...
Page 91 - Paper Feed problems – Causes and Solutions
Samsung Electronics Service Manual Troubleshooting 6-10 6.3 Paper Feed problems – Causes and Solutions 6.3.1 Wrong Print Position • Description Printing begins at wrong position on the paper. Check and Cause Solution Wrong sensor timing caused by defective feed sensoractuator. Replace the defective ...
Page 94 - • Description
Troubleshooting Samsung Electronics Service Manual 6-13 6.3.7 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 pr...
Page 95 - Printer Faults – Causes and Solutions
Samsung Electronics Service Manual Troubleshooting 6-14 6.4 Printer Faults – Causes and Solutions 6.4.1 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 circ...
Page 96 - Fuser gear melts due to overheating causing Paper Jam.; Check the Heat Lamp, thermostat and thermistor
Troubleshooting Samsung Electronics Service Manual 6-15 6.4.3 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 t...
Page 98 - No error message when the cover is open; The ‘Open Cover’ microswitch may be stuck or faulty
Troubleshooting Samsung Electronics Service Manual 6-17 6.4.7 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 conne...
Page 100 - 0 Printed Vertical Lines become curved; When printing, vertical lines are not straight.; Check and Cause
Troubleshooting Samsung Electronics Service Manual 6-19 6.4.10 Printed Vertical 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 p...
Page 101 - Toner Cartridge Service; Note : Help the environment by recycling your used toner car-; Unpack the new toner cartridge and gently shake it hor-; • Spotting a refilled cartridge by eye.
Samsung Electronics Service Manual Troubleshooting 6-20 6.5 Toner Cartridge Service Only toner cartridges supplied by Samsung should be used. Printing defects or set damage caused by the use ofnon-approved toner cartridges or un-licensed toner refills are not covered by the guarantee. 6.5.1 Precauti...
Page 102 - Signs and Measures of Poor toner cartridge; Fault
Troubleshooting Samsung Electronics Service Manual 6-21 6.5.4 Signs and Measures of Poor toner cartridge Fault Signs Cause & Check Solution Light image andpartially blankimage(Cartridge life isended.) TonerContamination • The printed image is light or dirty anduntidy. • Parts of the image are no...
Page 104 - • The printed image
Troubleshooting Samsung Electronics Service Manual 6-23 Fault Signs Cause & Check Solution Ghost & ImageContamination • The printed image is too light or dark,or partially contaminated black. • Totally contaminated black.(Black image printed out) • The density of printouts is too darkand gho...
Page 105 - Software Problems – Causes and Solutions
6.6.2 Abnormal Printing • Description Printing does not work – even after replacing the cablePrinter 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 “insufficient memory”. (The printin...
Page 107 - Block Diagram; System Block Diagram; Chrous2; OPE; Scanner; Main Board; Engine Frame
Block Diagram Samsung Electronics Service Manual 7-1 7 7 7. Block Diagram 7.1 System Block Diagram Chrous2 UART CY25811 Main CLK 10.00MHz USB2.0 FLASHROM 29LV800 SDRAM 8MB Motor D rv . A3977 Motor D rv . A3977 Main Motor Scan Motor LSU CIS RESET IC C R SMPS HVPS D R S R T R REG REG Exit Sensor Feed ...
Page 108 - Exploded Views & Parts List
Exploded Views & Parts List Service Manual 8-1 8 8 8.1 Main Exploded View 8-2 8.2 Housing Base Exploded View 8-3 8.3 Frame Assembly Exploded View 8-4 8.4 Fuser Unit Exploded View 8-5 8.5 Drive Assembly Exploded View 8-6 8.6 Scan Assembly Exploded View 8-7 8.7 OPE Assembly Exploded View 8-8 8.8 C...
Page 109 - Main Exploded View
Service Manual Exploded Views & Parts List 8-2 8.1 Main Exploded View 0 4 6 7 8 9 10 B 11 -1 11 -2 11 -3 17 20 A 12 13 14 15 16 19 19 1 2 23 3 18 22 21
Page 124 - Connection Diagram
Connection Diagram Samsung Electronics Service Manual 9-1 9 9 9. Connection Diagram 9.1 SCX-4200 Connection Diagram 1: L S U _C L K 2: nL R E A D Y 3: nP M O T O R 4: G N D 5: 24V S 6: nHS Y NC 7: L S U _5V 8: G N D 9: L D _O N 10: V DO 11: G ND LS U _U N IT 1: 3. 3V 2: HY P E R_ T X 3: HY P E R_ R ...
Page 125 - Schematic Diagram; This Document can not be used without Samsung’s authorization.; Schematic Diagrams; Main controller
Schematic Diagram Service Manual 10-1 This Document can not be used without Samsung’s authorization. Samsung Electronics 10. Schematic Diagrams 10.1 Main Board(1/7) PTL, FAN2 Main controller REV 0.3 5 12 LSU, SMPS, PANEL, COVER OPEN 2 1 3 7 10 Description 9 11 INDEX 6 == MEMO == USB2.0, CRUM Eiger A...
Page 132 - OPE Circuit Diagram
Schematic Diagram Service Manual 10-8 This Document can not be used without Samsung’s authorization. Samsung Electronics MI MICO CO M M (U1) (U1) LCD LCD BASIC (LCD1) BASIC (LCD1) CHIN CHINA/KOREA (LCD2) A/KOREA (LCD2) JB13-00004A JB13-00004A JB13-00035A JB13-00035A JB07-00004A JB07-00004A JC07-0000...
Page 141 - Reference Information; 1 Reference Information; Tool for Troubleshooting; Vacuum Cleaner
Reference Information Samsung Electronics Service Manual 11-1 1 1 1 1 11 Reference Information This chapter contains the tools list, list of abbreviations used in this manual, and a guide to thelocation space required when installing the printer. A definition of tests pages is also included. 11.1 To...
Page 142 - Acronyms and Abbreviations
Samsung Electronics Service Manual Reference Information 11-2 11.2 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 thetable. ADC Analog-to-Digital-C...
Page 144 - Select a location for the printer; • Provide the proper environment :
Samsung Electronics Service Manual Reference Information 11-4 11.3 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 o...
Page 145 - This test page is reproduced at 70% of the normal A4 size
Reference Information Samsung Electronics Service Manual 11-5 11.4 A4 ISO 19752 Standard Pattern This test page is reproduced at 70% of the normal A4 size
