Samsung SCX-4200 manual

Manual SERVICE DIGIT AL LASER MFP SCX-4200 Series SCX-4200/XAX Basic Model : SCX-4200 DIGIT AL LASER MFP The keynote of Product [ Key Features ] - 18ppm Print/Copy Speed - 600dpi Print/Copy Resolution - 600 x 2400dpi Scan Resolution - Samsung Print Language - 8MB System Momory - 250sh Paper Input/50sh Paper Output - Under 42sec W arm-up T ime - 16 [...]

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 applicable international and/or domestic law . * This service manual is also provided on the web, the ITSELF system [...]

Contents 1. Precautions 1.1 Safety W arning 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 Descriptions 3-9 3.3 S/W Structure and Descriptions 3-19 4.[...]

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 5-1 1 5.10 Fuser 5-12 5.1 1 Exit Roller 5-14 5.12 LSU 5-15 5.13 Fan 5-16 5.14 Drive Ass'y 5-16 5.1[...]

Continued 7. Block diagram 7.1 System Block Diagram 7-1 8. Exploded V iews & 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-1 10V 10-9 10.3 SMPS-220V 10-13 1 1. Reference Information 1 1.1 T ools for T r[...]

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 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 a[...]

Samsung Electronics Service Manual Precautions 1-2 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 o[...]

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 could cause the printer to tip or fall. (2) The pri[...]

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 cool down before disassembly . (2) Do not put finger or hair into the rotating parts. Wh[...]

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 field effect transistors, and semiconductor “chip”[...]

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(sailes) USB 2.0 250pages feeding, 50pages Face Down [...]

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 for product specifications. 2.2.1 General Specifications Items SCX-4200 Remarks General Major Features Copier,Print,Scan Size (W*D*H) 16.6"x15[...]

Product Specifications Samsung Electronics Service Manual 2-3 2.2.3 Scan Specification 2.2.2 Print Specification Items SCX-4200 Remarks PRINT Print Speed 19ppm/Ltr, 18ppm/A4 Print Method Laser Print Language SPL Power Save Yes(5/10/15/30/45min.) Resolution Normal 600 x 600 dpi RET No Toner Save Yes LCD Only (Toner Save On/Off Setting method is in t[...]

Samsung Electronics Service Manual Product Specifications 2-4 2.2.4 Copy Specification Items SCX-4200 Remarks COPY Copy Quality Selection or Text 600x300dpi Original Image type Text/Photo 600x300dpi selection Mode Photo 600x600dpi for Platen FCOT Stand by Approx. 11 seconds From Cold Status Less than 41 seconds Copy Speed / Letter SDMC at all mode [...]

Product Specifications Samsung Electronics Service Manual 2-5 2.2.5 Paper Handiling Specification Items SCX-4200 Remarks Paper Handling Capacity( 20lbs) Main Tray 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 Tray Legal,A4,Letter,[...]

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 Application RCP No Remote Control Panel, Only for upgrade [...]

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[...]

Samsung Electronics Service Manual System Overview 3-2 3.1.2 Sensor[...]

System Overview Samsung Electronics Service Manual 3-3 3.1.3 Control Panel[...]

Samsung Electronics Service Manual System Overview 3-4 3.1.4 System Layout SCAN P ART Pa per Inpu t (C assette) Pa per Input (Ma nual F eeder) Pa per Out ( Fa ce Down) Pa per Em pty Sensor (M anual) Pa per Em pty Sensor (C assette) Pa per Feeding S ensor Paper Ex it Sensor Pa per Out ( Fa ce Up )[...]

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, and it has a sensor , which checks when the pape[...]

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 is tubed with T eflon. This ensures that toner does not adhere to the roller surface. 5) Safety Relevant Facts • T o prevent overheating - 1st protection device:[...]

System Overview Samsung Electronics Service Manual 3-7 3.1.4.6 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 [...]

Samsung Electronics Service Manual System Overview 3-8 3.1.4.7 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 Met[...]

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 and Power part. Each Part is separated Module which focus on common and standard design of dif ferent kind products. The main control part is 1 CPU,1 board ado[...]

Samsung Electronics Service Manual System Overview 3-10 3) SDRAM : is used as Page Buffer in Printing, Scan Buffer in Scanning and System Working Memory Area - Size: 8Mbyte - 3.5 MB: System Working Memory Area and Scan Buffer - 4.5 MB: Printing System Working Memory Area - Max Frequency: 133MHz CPU ( ARM7TDMI) DMA Controller (IP_DMAC) DATA-BUS Scan[...]

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 Sampling) technique which samples arm-level twice is[...]

Samsung Electronics Service Manual System Overview 3-12 3.2.4 Printer Section Printer is consisted of the Engine parts and F/W , and said engine parts is consisted of the mechanical parts comprising Frame, Feeding, Developing, Driving, T ransferring, Fusing, Cabinet and H/W comprising the main control board, power board, operation panel, PC Interfa[...]

System Overview Samsung Electronics Service Manual 3-13 Boundary Scan ARM7TDM I 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-CH) Interrupt Controller Memory I/F ROM/ SRAM DRA[...]

Samsung Electronics Service Manual System Overview 3-14 3.2.5 Copier Part 1) Copy Mode: Black and White 2) Scanner T ype: CIS with Flatbed/Platen 3) Maximum Size of Original: Platen: 216 x 297 mm (max. width = 216 mm, max length = 297 mm) 4) Optical Resolution: 600 x 600 dpi 5) Copy Quality - H x V : T ext : 600 x 300 dpi (default) (User selectable[...]

System Overview Samsung Electronics Service Manual 3-15 3.2.6.1 HVPS (High V oltage Power Supply) T ransfer High V oltage (THV+) - Input V oltage : 24 V DC 15% - Output V oltage : MAX +5.0KV 5 %,(Duty V ariable, no loading ) - Input contrast of the V oltage stability degree : under 3 % (fluctuating input 21.6V~26.4V) Loading contrast : 3 % or less [...]

3.2.6.2 SMPS (Switching Mode Power Supply) It is the power source of entire system. It is assembled by an independent module and completely common use with SCX-4200, so it is same characteristic with SCX-4200. It is mounted at the bottom of the set. It is consisted of the SMPS part, which supplies the DC power for driving the system, and the AC hea[...]

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 -L V / 1,500V ac-HV ,10mA) - Leaking Current: under 3.5mA - Running Current: under 40A PE[...]

Samsung Electronics Service Manual System Overview 3-18 3.2.7 FUSER AC POWER CONTROL Fuser(HEA T LAMP) gets heat from AC power . The A V power controls the switch with the T riac, a semiconductor switch. The ‘ ON/OFF control ’ is operated when the gate of the T riac is turned on/off by Phototriac (insulting part). In other words, the AC control[...]

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 Processing Control Module Engine Unit Control Module Hardwa[...]

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 and Engine Unit Control Module. Major operations of the Printer Engine Cont[...]

System Overview Samsung Electronics Service Manual 3-21 3.3.2.4 Engine Unit Control Module Engine Unit Control Module consists of 4 sub-functions. The first function is a fixing unit control function. At this func- tion, it controls the temperature of a fixing unit for regulating temperature of the unit within a fixed range that is set following pa[...]

Samsung Electronics Service Manual System Overview 3-22 3.3.3 Functional Requirements of Fixing Unit (Fuser) Handling The fixing control depends on its fixing mechanism. And according to a paper type, a paper size, an elapsed printed time, or the number of accumulated Printing Pages, a fixing control is different. Moreover , it may be different acc[...]

System Overview Samsung Electronics Service Manual 3-23 3.3.3.6 T emperature in the Stand-By mode At the stand-by mode, the engine controls the temperature of the fixing unit for maintaining a specified temperature for reducing printing time of the first page. Moreover , the temperature depends on an environment condition. For example, normally the[...]

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 dif ferent registers for LSU. These registers are in manual book of CHORUS2, the CPU of the Eiger . 3.3.4.1 LSU Ready Check [...]

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 into several levels with the index. It is used to control high-voltage values deciding the warm-up time, the fixing temperatur[...]

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 the paper fed through the paper pass. So the engine-control f/w supplies the high voltage to the developer unit at the specified time and p[...]

System Overview Samsung Electronics Service Manual 3-27 3.3.8 Functional Requirements of T oner Cartridge 3.3.8.1 Installation T oner 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 is the crum. The crum stores the ID, the opc cycle, the toner consumption and so on. 3.3[...]

Samsung Electronics Service Manual System Overview 3-28 3.3.13 Checking Paper jam Paper Jam happens when a paper is not fed to required position by a mechanical obstacle. The paper jam is decided by checking the states of sensors while moving the paper . There are a feed sensor and an exit sensor in the paper-feeding path. The jam is classified to [...]

System Overview Samsung Electronics Service Manual 3-29 3.3.15 T emperature 3.3.15.1 Open Heat Error When the engine operates the warm-up process, if the temperature of the fixing unit is not higher than a specified temperature, the engine defines Open Heat Error . When this error is broken out, the engine stops all functions and keeps the error st[...]

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 is elapsed, if the motor is not in a ready status, the engine detects the error that the polygon motor is not in a ready stat[...]

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 T est Mode The Engine T ests Mode supplies useful [...]

Samsung Electronics Service Manual Alignment and Adjustmens 4-2 4.2 Paper Path SCAN P ART Pa per I nput (Ca ssette) Pa per Input (Manua l Feed er) Pa per Out (Fa ce Down) Pa per Em pty Sensor (Ma nu a l) Pa per Em pty Sensor (Ca ssette) Pa per Feeding S ensor Pa per Exit Sensor Pa per Out (Fa ce U p) SCAN PART SCAN PART SCAN PART 1) After receiving[...]

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. 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. M[...]

Samsung Electronics Service Manual Alignment and Adjustmens 4-4 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 , continue t[...]

Alignment and Adjustmens Samsung Electronics Service Manual 4-5 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 . P[...]

Samsung Electronics Service Manual Alignment and Adjustmens 4-6 4.4 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 until "Report" ap[...]

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 T ransfer Roller 50,000 Pages Fuser 50,000 Pages T oner Cartridge Original 1,000 Pages Replacement 3,000 Pages 4.7 Consumables and Replacement Parts The cycle period outlined below i[...]

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 or contaminated roller . Measure the repetition interval and refer to the table below to identify the roller concerned. No Roller Defective image T yp[...]

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 cord and plug it back in. If the problem persists, [...]

2nd level 3rd level 4th level Default Value Descriptions Upper Level -- Upper Level Left/Ri g ht && Enter -- ඖ 16 Character Left/Ri g ht Enter Menu 1.Reduce/Enlar g e Original(100%) 100% A4 ױ LTR(94%) EXE ױ LTR(104%) 50% 150% 200% Custom:50-200% 1 Normal 2 Dark 3 Light 1T e x t * Defaul t 2 Text/Photo 3P h o t o 1O f f * Default 2C l o [...]

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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 close proximity of cables to moving parts makes proper routing a must. If components are removed, any cables disturbed by the p[...]

Service Manual Disassembly and Reassembly 5-2 Samsung Electronics 5.2 Front Cover 1. T ake the Cassette out of the printer . 2. Open the Front Cover . 3. T o remove the Front Cover , first pull the part below the right side of the Front Cover with a light pressure to the direction of arrow and then remove the Front Cover , as shown below . Front Co[...]

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. T o remove the Rear Cover make sure the Power Switch doesn't get jammed to Rear Cover and then Unplug the one connector(DC Fan) from the Main PBA, as shown below . 3. If necessary , remove the [...]

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 Harness Holder and remove it, as shown below . 3. Pull the DC Fan out of the Rear Cover . Harness[...]

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 Right Side Cover and pull it to the right side in [...]

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 Left Side Cover and pull it to the left side in the [...]

Disassembly and Reassembly Service Manual 5-7 Samsung Electronics 5.7 Scanner Unit 1. Before you remove the Scanner Unit, you should remove: - Front Cover (Refer to 5.2) - Rear Cover (Refer to 5.3) - Right Side Cover (Refer to 5.5) - Left Side Cover (Refer to 5.6) 2. Unplug the two connectors(Scan Motor , OPE Unit) and CIS FFC from the Main PBA, as[...]

Service Manual Disassembly and Reassembly 5-8 Samsung Electronics 6. Remove the two screws securing the Scan Upper Unit. 7. Release the seven hooks securing the Scan Upper Unit to the Scan Lower Unit and remove it, as shown below . 8. Using the right hand to push the Idle Pulley from right to left, and the left hand to lift and remove the Belt. 9. [...]

Disassembly and Reassembly Service Manual 5-9 Samsung Electronics 1 1. T o remove Belt using a screw driver , remove the Belt Clip at the center of the Carriage and remove the Belt, as shown below . 12. T ake the CIS Shaft out of OPE Lower Unit and then remove the three screws securing the Scan Motor Ass'y and remove it. 13. Remove the Idle Pu[...]

Service Manual Disassembly and Reassembly 5-10 Samsung Electronics 5.8 OPE Unit 1. Lift the Platen Cover upward and remove it. 2. T o remove OPE Unit, first pull the part below the front of the OPE Unit with a light pressure to the direction of arrow . 3. Remove the three scrrews securing the OPE PBA and remove it. 4. Release the Keys. Platen Cov e[...]

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[...]

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: Remove the Fuser taking care not to damage the Exi[...]

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 RDCN(25/15) Thermister Har ness Thermister[...]

Service Manual Disassembly and Reassembly 5-14 Samsung Electronics 5.1 1 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 and rollers, as shown below . 1 2 1 Exit Gear Bear[...]

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. Unplug the four screws and take the LSU out. CAP LSU L[...]

5.14 Drive Ass'y 1. Before you remove the Drive Ass'y , you should remove: . 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 numbered on the Drive Ass&ap[...]

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 all connectors. Then remove the En[...]

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 the one screw securing the ground cable, as sh[...]

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 . CR UM PCB[...]

Service Manual Disassembly and Reassembly 5-20 Samsung Electronics 5.19 T ransfer Roller 1. Before you remove the T ransfer 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 T ransfer Earth out. 3. Unplug the PTL PBA Harness then remove the PTL [...]

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 the Feed Idle Bush and Feed Idle Shaft, as[...]

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[...]

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 steps 4~6) 2. Remove the Pick Up Gear Ass&[...]

Service Manual Disassembly and Reassembly 5-24 Samsung Electronics[...]

T roubleshooting Samsung Electronics Service Manual 6-1 6 6 6. T roubleshooting 6.1 Printing Problems – Causes and Solutions 6.1.1 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 [...]

Samsung Electronics Service Manual T roubleshooting 6-2 6.1.3 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 [...]

T roubleshooting Samsung Electronics Service Manual 6-3 6.1.5 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[...]

Samsung Electronics Service Manual T roubleshooting 6-4 6.1.7 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[...]

T roubleshooting Samsung Electronics Service Manual 6-5 6.1.9 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[...]

Samsung Electronics Service Manual T roubleshooting 6-6 6.1.1 1 Ghost (3) • Description Ghost occurs at 64 mm intervals. Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer 64 mm Check and Cause Solution 1. Disassemble the fuser and remove any contamination on the rollers. Clean any contamination from b[...]

T roubleshooting Samsung Electronics Service Manual 6-7 6.1.14 Stains on Back of Page • Description The back of the page is stained at 45.3 or 75.3 mm intervals. Digital Digital Pri Digital Printer Digital Printer Digital Printer Check and Cause Solution 1. 45.3mm : T ransfer roller is contaminated. 2. 75.3mm : Pressure roller is contaminated. 1.[...]

Samsung Electronics Service Manual T roubleshooting 6-8 6.2.1 White Copy • Description Blank page is printed out when copying. 6.2 Copy Problems 6.2.2 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 [...]

T roubleshooting Samsung Electronics Service Manual 6-9 6.2.3 Abnormal noise • Description There is noise from the Platen when copying. Check and Cause Solution 1. Check the Scan Motor and gesr . 2. Check the Motor Driver on Driver PBA. 6.2.4 Defective Image Quality • Description The copied image is excessively light or dark Check and Cause Sol[...]

Samsung Electronics Service Manual T roubleshooting 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 sensor actuator . Replace the defective actuator 6.3.2 JAM 0 • Description 1. Pa[...]

T roubleshooting Samsung Electronics Service Manual 6-11 6.3.4 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[...]

Samsung Electronics Service Manual T roubleshooting 6-12 6.3.5 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 [...]

T roubleshooting 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 properly to prevent curl. Note. T o remove paper [...]

Samsung Electronics Service Manual T roubleshooting 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 circuit. 2. Thermistor is open circuit. 3. [...]

T roubleshooting 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 test the fuser . Replace Fuser unit Replace SMP[...]

Samsung Electronics Service Manual T roubleshooting 6-16 6.4.5 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[...]

T roubleshooting 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 connector and cables between Switch and main PBA[...]

Samsung Electronics Service Manual T roubleshooting 6-18 6.4.8 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[...]

T roubleshooting Samsung Electronics Service Manual 6-19 6.4.10 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.[...]

Samsung Electronics Service Manual T roubleshooting 6-20 6.5 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. 6.5.1 Precautions on Safe-keeping of T oner Cartridge Excessi[...]

T roubleshooting Samsung Electronics Service Manual 6-21 6.5.4 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 "t[...]

Samsung Electronics Service Manual T roubleshooting 6-22 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. [...]

T roubleshooting Samsung Electronics Service Manual 6-23 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[...]

6.6.2 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 memory”. (The printing job sometimes stops due to insuf fic[...]

T roubleshooting Samsung Electronics Service Manual 6-25 6.6.3 SPOOL Error • Description SPOOL (simultaneous peripheral operations online) is the process Windows 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 i[...]

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 Drv . A3977 Motor Drv . A3977 Main Motor Scan Motor LSU CIS RESET IC C R SMPS HVPS D R S R T R REG REG Exit Sensor Feed Sensor Cover Open S/W 24 V/5V TRIAC Thermistor Fuser[...]

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 Cassette Assembly Exploded View 8-9 8. Exploded V i[...]

Service Manual Exploded Views & Parts List 8-2 8.1 Main Exploded V iew 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[...]

Exploded Views & Parts List Service Manual 8-3 8.2. Housing Base Exploded V iew 0 1 1-1 1-2 1-3 1-4 1-4 1-6 1-7 2 3 5 4 5-1 5-2 3-1 3-2 2-1 2-2 2-3 2-4 2-4 2-5[...]

Service Manual Exploded Views & Parts List 8-4 8.3. Frame Assembly Exploded V iew 1 41-1 41-2 41-3 41-4 41-5 41-6 41-7 41-4 46-1 46-2 46-3 46-4 45-1 45-2 45-3 46-5 T ransfer Roller 0 4 5 6 7 6 5 8 9 10 11 12 12 13 13 14 15 16 17 18 19 20 21 22 23 24 25 26 28 29 30 30 22 31 32 33 34 27 35 36 37 38 38 39 40 C 42 43 44 A B 47 48 49 50 51 52 71 53 [...]

Exploded Views & Parts List Service Manual 8-5 8.4. Fuser Unit Exploded V iew 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31[...]

Service Manual Exploded Views & Parts List 8-6 8.5. Drive Assembly Exploded V iew 0 8 12 11 5 6 9 10 4 3 2 1 7 13 13 13 5 5 7[...]

Exploded Views & Parts List Service Manual 8-7 8.6. Scan Assembly Exploded V iew 0 1 2 3 3 4 5 6 7 8 9 10 11 12 13 14 15 16 26 A 17 18 18 20 21 22 23 24 25[...]

Service Manual Exploded Views & Parts List 8-8 8.7. OPE Assembly Exploded V iew 0 1 2 3 4 5 6 7 8 10 9 10 10[...]

Exploded Views & Parts List Service Manual 8-9 8.8. Cassette Assembly Exploded View 0 1 3 2 20 19 4 5 6 7 8 10 10 9 11 12 13 18 15 14 16 17 17[...]

΁ΒΣΥΤ͑ͽΚΤΥ Drawer# SEC_Code Description&Specification Location Service 8.1-1 JC96-03807A ELA HOU BASE-HOUSING;SCX-4200,SEC,-,-,-, SNA 8.1-2 3103-001085 FAN-DC;24V,80mA,4800rpm,-,0.131mmH20 Z4126 SA 8.1-3 JC61-01643A HOLDER-M_HARNESS;SCX-4200,ABS, HB,2.0,15 SA 8.1-5 JC31-00004A FAN-DC_HAWK;ML-6060,24.0V,2800rpm,15m^3/ F5018 SA 8.1-6 JC[...]

΁ΒΣΥΤ͑ͽΚΤΥ Drawer# SEC_Code Description&Specification Location Service SA : SERVICE AVAILABLE SNA : SERVICE not AVAILABLE DNA : DELIVERY not AVAILABLE 8.3-20 JC75-00049A MEC-TERMINAL;SF-5100,SAMSUNG,-,-,-,-,-,- K3739 SA 8.3-21 JC61-00911A HOUSING-M-TERMINAL R2;SCX-4920N,ABS(NH-1 H6040 SA 8.3-22 JC72-00983A PMO-LOCKER CST;ML-1710,POM(D[...]

΁ΒΣΥΤ͑ͽΚΤΥ Drawer# SEC_Code Description&Specification Location Service SA : SERVICE AVAILABLE SNA : SERVICE not AVAILABLE DNA : DELIVERY not AVAILABLE 8.4-14 4713-001203 LAMP-HALOGEN;115V,-,600W,-,-,-,6X284MM SA 8.4-15 JC66-00601A ROLLER-HEAT;ML-1710,AL 5052+PFA,20.3,247 H2010 SA 8.4-16 JC66-00564A GEAR-FUSER, Z37;ML-1710,PPS OFL4036,[...]

΁ΒΣΥΤ͑ͽΚΤΥ Drawer# SEC_Code Description&Specification Location Service SA : SERVICE AVAILABLE SNA : SERVICE not AVAILABLE DNA : DELIVERY not AVAILABLE 8.7-10 6003-000196 SCREW-TAPTITE;PWH,+,B,M3,L10,NI PLT,SWRC Z4198 SA 8.8-1 JC70-00300A ADJUST-M-CASSETTE_L;ML-1400,ABS,-,-,-,VI K2014 SA 8.8-2 JC70-00301A ADJUST-M-CASSETTE_R;ML-1400,AB[...]

΁ΒΣΥΤ͑ͽΚΤΥ Drawer# SEC_Code Description&Specification Location Service SA : SERVICE AVAILABLE SNA : SERVICE not AVAILABLE DNA : DELIVERY not AVAILABLE #N/A JC68-10934F LABEL(P)-NOM(BOX);COMMON,XAX,ART,100G,0. SNA #N/A JC69-00933A CUSHION-MAIN(R);SCX-4200/XAA,EPS,-,506,1 SNA #N/A JC69-00933B CUSHION-MAIN(L);SCX-4200/XAA,EPS,-,506,1 SNA[...]

΁ΒΣΥΤ͑ͽΚΤΥ Drawer# SEC_Code Description&Specification Location Service SA : SERVICE AVAILABLE SNA : SERVICE not AVAILABLE DNA : DELIVERY not AVAILABLE #N/A 2401-000426 C-AL;10uF,20%,16V,GP,TP,3.5x5,5 SA #N/A 2402-000008 C-AL,SMD;47uF,20%,16V,GP,TP,6.6x6.6x5.4 SA #N/A 2402-001178 C-AL,SMD;10uF,20%,16V,WT,TP,4.3x4.3x5.8m SA #N/A 3301-00[...]

΁ΒΣΥΤ͑ͽΚΤΥ Drawer# SEC_Code Description&Specification Location Service SA : SERVICE AVAILABLE SNA : SERVICE not AVAILABLE DNA : DELIVERY not AVAILABLE #N/A 3711-003411 HEADER-BOARD TO CABLE;BOX,5P,1R,2mm,STRA SNA #N/A JC07-00003A LCD-DISPLAY(XEV);VHX1620BHRC9,SCX-5312F/ SA #N/A JC39-00306A CBF HARNESS-LCD;CLP-500,WIRE,UL2877,14-1 SA #[...]

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 EA D Y 3: nP M O T O R 4: G ND 5: 24V S 6: nHSY NC 7: L S U _ 5V 8: G ND 9: L D_ O N 10: V DO 11: G ND LS U _ U N I T 1: 3. 3V 2: HY P ER_ T X 3: HY P ER_ R X 4: G ND DE BU G 1: A 2: B 3: A / 4: B / 1: CI S _ [...]

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 ASIC (CHORUS 2) Sheet SDRAM, FLASH ROM FUSER, MA[...]

Schematic Diagram Service Manual 10-2 This Document can not be used without Samsung’ s authorization. Samsung Electronics INSTPAR L4 L5 INSTPAR Main Board(2/7)[...]

Schematic Diagram Service Manual 10-3 This Document can not be used without Samsung’ s authorization. Samsung Electronics Main Board(3/7) 100 R2 41 VSS3 54 VSSQ1 6 12 VSSQ2 VSSQ3 46 52 VSSQ4 1 14 VDD2 VDD3 27 3 VDDQ1 VDDQ2 9 43 VDDQ3 VDDQ4 49 VSS1 28 VSS2 DQ4 DQ5 10 11 DQ6 DQ7 13 42 DQ8 DQ9 44 36 NC1 NC2 40 VDD1 DQ10 DQ11 47 48 DQ12 DQ13 50 51 DQ[...]

Schematic Diagram Service Manual 10-4 This Document can not be used without Samsung ’ s authorization. Samsung Electronics Main Board(4/7) Not used[...]

Schematic Diagram Service Manual 10-5 This Document can not be used without Samsung ’ s authorization. Samsung Electronics Main Board(5/7) Not Used Not Used Not Used L6 INSTPAR[...]

Schematic Diagram Service Manual 10-6 This Document can not be used without Samsung ’ s authorization. Samsung Electronics Main Board(6/7)[...]

Schematic Diagram Service Manual 10-7 This Document can not be used without Samsung ’ s authorization. Samsung Electronics Main Board(7/7)[...]

Schematic Diagram Service Manual 10-8 This Document can not be used without Samsung ’ s authorization. Samsung Electronics MI MI CO CO M M (U1) (U1) LCD LCD BASIC (LCD1) BASIC (LCD1) CHIN CHIN A/KOREA (LCD2) A/KOREA (LCD2) JB13-00004A JB13-00004A JB13-00035A JB13-00035A JB07-00004A JB07-00004A JC07-00008A JC07-00008A 10.2 OPE Circuit Diagram[...]

Schematic Diagram Service Manual 10-9 This Document can not be used without Samsung ’ s authorization. Samsung Electronics 10.3 SMPS-1 10V(1/4)[...]

Schematic Diagram Service Manual 10-10 This Document can not be used without Samsung ’ s authorization. Samsung Electronics SMPS-1 10V(2/4)[...]

Schematic Diagram Service Manual 10-11 This Document can not be used without Samsung ’ s authorization. Samsung Electronics SMPS-1 10V(3/4)[...]

Schematic Diagram Service Manual 10-12 This Document can not be used without Samsung ’ s authorization. Samsung Electronics SMPS-1 10V(4/4)[...]

Schematic Diagram Service Manual 10-13 This Document can not be used without Samsung ’ s authorization. Samsung Electronics 10.3 SMPS-220V(1/4)[...]

Schematic Diagram Service Manual 10-14 This Document can not be used without Samsung ’ s authorization. Samsung Electronics SMPS-220V(2/4)[...]

Schematic Diagram Service Manual 10-15 This Document can not be used without Samsung ’ s authorization. Samsung Electronics SMPS-220V(3/4)[...]

Schematic Diagram Service Manual 10-16 This Document can not be used without Samsung ’ s authorization. Samsung Electronics SMPS-220V(4/4)[...]

Reference Information Samsung Electronics Service Manual 11-1 1 1 1 1 1 1 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. 1 1.1 T ool for T roubleshooting The following tools a[...]

Samsung Electronics Service Manual Reference Information 11-2 1 1.2 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 Curren[...]

Reference Information Samsung Electronics Service Manual 11-3 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[...]

Samsung Electronics Service Manual Reference Information 11-4 1 1.3 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 [...]

Reference Information Samsung Electronics Service Manual 11-5 1 1.4 A4 ISO 19752 Standard Pattern This test page is reproduced at 70% of the normal A4 size[...]