TM DellTM Laser MFP 1600n Easy as SERVICE DellTM Laser MFP Manual CONTENTS 1. Precautions 2. Reference Information 3. Specifications 4. Summary of product 5. Disassembly and Reassembly 6. Alignment and Adjustments 7. Troubleshooting 8. Exploded Views and Parts List 9. Block Diagram 10. Connection Diagram 11. Circuit Description 12.
© Copyright Dell Inc. May.
Precautions 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 Warning (1) Only to be serviced by appropriately qualified service engineers. High voltages and lasers inside this product are dangerous. This printer should only be serviced by a suitably trained and qualified service engineer.
Precautions 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 should be avoided, wash any splashes from eyes or skin immediately and contact your doctor. If the liquid gets into the mouth or is swallowed see a doctor immediately. (2) Please keep toner cartridges away from children.
Precautions 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 printer contains many rollers, gears and fans. Take great care to ensure that you do not catch your fingers, hair or clothing in any of these rotating devices.
Precautions 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. When operating a printer, do not put hand or hair into the rotating parts (Paper feeding entrance, motor, fan, etc.). If do, you can get harm. (3) When you move the printer. This printer weighs 15.
Precautions 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 techniques outlined below should be followed to help reduce the incidence of component damage caused by static electricity.
Reference Information 2 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 and Wireless Network information definition is also included. 2.1 Tool for Troubleshooting The following tools are recommended safe and easy troubleshooting as described in this service manual. • DVM(Digital Volt Meter) Standard : Indicates more than 3 digits.
Reference Information 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.
Reference Information 2.3 The Sample Pattern for the Test 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.) 2.3.
Reference Information 2.3.
Reference Information 2.3.
Reference Information 2.3.
Specifications 3 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 Tag Heuer Remarks SCX-4920N/DELL Major Features Fax, Copier, Print, Scan, ADF, N/W Print, Scan-to-Email Size (W*D*H) w/o Hand Set 450mmx423mmx456mm) (17.7x16.7x18") Net Weight(Inc. Toner Cartridge) 15.6kg Net Weight(exc. Toner Cartridge) 14.8kg Gross Weight(with package) 20.
Specifications Items Tag Heuer Remarks SCX-4920N/DELL Periodic Replacing Parts Environmental Pickup Roller 150,000 Pages Investigating new material to prolong life of pickup rollerSamsung confirm 150,000 Pages reliability. Pad Unit(Tray) 150,000 Pages Samsung confirm 150,000 Pages reliability.
Specifications 3.2 Print Specification Items Tag Heuer Remarks SCX-4920N/DELL PRINT Print Speed 22ppm/Ltr, 20ppm/A4 (600 dpi) Print Emulation GDI, PCL6, PCL5e PostScript Level3(Clone) Auto Emulation Sensing YES Font Type 45 Scalable, 1 Bitmap Number N/A Power Save Resolution Yes(5/10/15/30/45min.) Normal 600x600dpi (1200x1200,) RET Yes Toner Save Yes (No dedicated button on CP) Memory 16MB FPOT From Stand by Approx.
Specifications 3.3 Scan Specification Items Tag Heuer Remarks SCX-4920N/DELL SCAN Scan Method Color CCD Scan Speed Linearity Approx. 75sec (USB 1.1) USB 1.1, 300dpi, Letter Size, through ADF Gray Approx. 75sec (USB 1.1) Pentimum 4 1.xGHz, Color Approx. 150sec (USB 1.1) 128MB RAM Linearity Approx. 75sec (USB 1.1) Scan Speed through Platen Gray Resolution Color 75dpi/300dpi Approx. 150sec (USB 1.1) Optical 600*1200dpi Enhanced 4800dpi*4800dpi Halftone Scan Size 256level Max.
Specifications 3.4 Copy Specification Items Tag Heuer Remarks SCX-4920N/DELL COPY Copy Quality Text Selection or Original Image Text/Photo type selection Photo Mode Other FCOT Stand by 600x300dpi 600x300dpi 600x600dpi for Platen N/A Approx. 10 seconds:Platen Approx.
Specifications Items Tag Heuer Remarks SCX-4920N/DELL TELEPHONE Handset No On hook Dial Yes Search Yes(Phone Book) 1-Touch Dial 10 Numeric Key pad (No dedicated keys) Speed Dial 200 locations(00~199) include 1-touch dials TAD I/F Yes Tone/Pulse Selectable in Technical Mode Pause Yes Auto Redial Yes Last Number Redial Yes Distinctive Ring Yes Caller ID No External Phone Interface Yes Report & Tx/Rx Journal Yes List Print out Confirmation Yes Help List No Auto Dial List
Specifications 3.5 Fax Specification Items Tag Heuer Remarks SCX-4920N/DELL Fax Compatibility ITU-T G3 Communication System PSTN/PABX Modem Speed 33.6Kbps TX Speed 3sec Compression MH/MR/MMR/JPEG Color Fax Yes(Send Only) ECM Yes Resolution LTRr/MMR Std 203*98dpi Fine 203*196dpi S.Fine 300*300dpi Scan Speed Std 2.5 sec/ LTR 1,200 PPS (ADF) Fine/S.
Specifications 3.6 Other Specification Items Tag Heuer Remarks SCX-4920N/DELL Network Paper Handling Option Yes (Standard) Protocol SPX/IPX, TCP/IP, Ethertalk, SNMP, HTTP 1.
Specifications Items Tag Heuer Remarks SCX-4920N/DELL Software Accessory Side 3.5/277mm (1st Tray) 4.0/277mm (2nd Tray) DOS No Win 3.x No Win 95 No Win 98 Yes Win ME Yes Win NT 4.0 Yes Win 2000 Yes Win XP Yes Mac English only web version Linux No WHQL MFP Yes for 2000 & XP Driver Printer GDI, PCL6, PCL5e(Std.) PostScript Level3(Std.
Specifications MEMO 3-10 Service Manual
Summary of Product 4 4. Summary of Product This chapter describes the functions and operating principal of the main component. 4.1 Printer Components 4.1.
Summary of Product 4.1.2 Rear View 14 22 21 15 20 16 4-2 19 18 17 # Use the: When you want to: 1 Automatic Document Feeder Load the document for copying, scanning, or sending faxes. 2 Operator Panel Operate the machine. 3 Paper O utput Extension Keep print media from falling off the front output tray. 4 Bypass Tray Load print media one sheet at a time. 5 Optional Tray2 Load paper into the optional Tray2. 6 Tray1 Load paper into the standard Tray1.
Summary of Product # Use the: When you want to: 11 Document Cover Open to place a document on the scanner glass. 12 Document Input Tray Load the document for copying, scanning and sending faxes. 13 Document Guides Ensure proper document feeding. 14 Rear Cover Open to remove the paper jams and use the rear output slot when you print the documents from the Bypass tray. 15 Rear Output Slot Hold paper as it exits at the rear of the machine. 16 Supply power to the machine.
Summary of Product 4.1.
Summary of Product Service Manual 4-5
Summary of Product 4.2 System Layout 4.2.1 Feeding section There is a universal cassette, which supplies paper to the machine, and the manual feeder, which supplies paper one by one. The cassette has the friction pad, which separates paper one by one and prevent multisheet feeding. There is a sensor to detect the existence of paper in the cassette.
Summary of Product 4.2.4.5 Safety Relevant Facts • Protecting device when overheating - 1st protecting device: H/W cuts off when detecting an overheating - 2nd protecting device: S/W cuts off when detecting an overheating - 3rd protecting device: Thermostat cuts off the power • Safety device - The power to the fuser is cut off when the front cover is open. - The overheating safety device for the customer safety. - Maintains the surface temperature of the Fuser Cover below 80°C.
Summary of Product 4.2.6 LSU (Laser Scanner Unit) The LSU unit is controlled by the video controller. It scans the video data received from video controller with laser beam by using a rotating polygon mirror to create the latent image on the OPC drum. The OPC drum rotates as the same speed as the paper feeding speed. When it hits the corner of the polygon mirror, it generates the /HSYNC signal. The CPU forms the left margin of the image using this signal.
Summary of Product 4.2.7 Toner Cartridge By using the xerographic process, it creates a visual image. The Toner Cartridge contains the OPC Drum, developer and toner components in one unit. The OPC unit contains the OPC drum and charging roller.
Summary of Product 4.3 Main PBA It is the functional center of the product. It controls the basic machine operations including the fax, scan, printer operations, sensor detection and power levels.
Summary of Product 1 MOTOR DRIVER(TEA3718SFP) U6 2 MOTOR DRIVER(TEA3718SFP) U12 3 QUAD 2-INPUT OR GATE(74VHX32) U10 4 QUAD 2-INPUT OR GATE(74VHX32) U7 5 QUAD 2-INPUT OR GATE(74VHX32) U70 6 VEDIC X-TAL(19.6MHz) OSC2 7 PROCESSOR ASIC(SPGPM) U33 8 CPU X-TAL(12MHz) OSC10 9 USB 2.0(NET2272) U48 10 VARTA(3.
Summary of Product 4.3.1 ASIC Samsung’s S3C46Q0X 16/32-bit RISC micro controller is designed to provide a cost-effective, low power, small die size and high performance micro-controller solution for MFP. The S3C46Q0X is developed using ARM7TDMI core, 0.18(m CMOS standard cell, and memory cell. • Main function block • 1.8V internal, 3.
Summary of Product 4.3.4 Sensor input circuit 1) Paper Empty Sensor The Paper empty sensor (Photo Interrupter) on the engine board informs the CPU as to whether the cassette is empty or not with operation of the actuator. When the cassette is empty, it detects the fact by reading the D0 Bit of CPU. It highlights this by selecting the second LED(yellow) among the panel LEDs. 2) MP Sensing The MP Sensor (Photo Interrupter) on the engine board informs the CPU as to whether the MP is empty or not.
Summary of Product 4.4 SMPS & HVPS The SMPS supplies the DC power to the system. It takes 110V/220V and outputs the 5V, 12V and 24V to supply the power to the main board and ADF board. The HVPS part creates the high voltage of THV/MHV/Supply/Dev and supplies it to the developer part for making the best condition to display the image. The HVPS part takes the 24V and outputs the high voltage for THV/MHV/BIAS, and the outputted high voltage is supplied to the toner, OPC cartridge, and transfer roller.
Summary of Product 4.4.1 HVPS(High Voltage Power Supply) 1) Transfer High Voltage (THV+) - Function : Voltage to transfer developed toner on OPC drum to a paper. - Output voltage : +1300V DC±20V - Error : If THV (+) doesn't output, a ghost status (same character is printed after one cycle (76mm) of OPC) with a low density occurs due to a toner on OPC drum cannot normally transfer to a paper. 2) Charge Voltage (MHV) - Function : It is a voltage to charge entire surface of OPC with -900V ~ -1000V.
Summary of Product 4.4.2 SMPS(Switching Mode Power Supply) It is the power source of entire system. It is assembled by an independent module, so it is possible to use for common use. 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 heater control part, which supplies the power to fuser. SMPS has two output channels. Which are +5V and +24V.
Summary of Product 6) Feature - Insulating resistance : over 50MΩ (at DC500V) Insulating revisiting pressure : Must be no problem within 1min. (at 1500Vzc, 10mA) Leaking voltage : under 3.
Summary of Product 4.5 Engine F/W 4.5.1 Feeding If feeding from a cassette, the drive of the pickup roller is controlled by controlling the solenoid. The on/off of the solenoid is controlled by controlling the general output port or the external output port. If feeding from a manual feeder, insert the paper according to the operation of the manual sensor, and by driving the main motor, insert the paper in front of the feed sensor. While paper moves, occurrence of jam is judged as below. (Refer to the [6.
Summary of Product 4.5.4 Fusing The temperature change of the heat roller’s surface is changed to the resistance value through the thermistor. By converting the voltage value to a digital value, through the AD converter, the temperature is decided. The AC power is controlled by comparing the target temperature to the value from the thermistor. If the value from the thermistor is out of the controlling range while controlling the fusing, the error stated in the table occurs. 4.5.4.
Summary of Product 4.6 LIU PBA LIU board is a Line interface unit, and it is a circuit for interfacing a telephone line with a modem. The circuit is consisted of matching transfer to conform to impedance of a receiving telephone line and a circuit to conform to impedance of a modem. Also, there is a ring detect circuit to detect a ring signal from a switchboard and a surge absorber to protect it from an external high voltage supply applied to a line input unit. 4.
Precautions 5 5. Disassembly and Reassembly 5.1 General Precautions on Disassembly When you disassemble and reassemble components, 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 procedure must be restored as close as possible to their original positions. Before removing any component from the machine, note the cable routing that will be affected.
Precautions 5.2 Rear Cover 1. Remove the four screws securing the Rear Cover. 3. Unlatch the (Cover Face Up) securing the Rear cover, as shown below.Then lift the (Cover Face Up) out. Cover Face Up 2. Remove the Rear Cover from the Frame Ass'y and Scanner Ass'y.
Precautions 5.3 Side Cover (LH, RH) 1. Before you remove the Side Cover (LH, RH), you should remove: - Rear Cover (see page 5-2) 2. Take out the Cassette. 4. Open the front cover and remove the 2 screws on the front side. Push the side cover(LH) to the left and remove it from the Frame Assembly. Side Cover (LH) Cassette 3. Open the front cover and remove the 2 screws on the front side and 1 screw on the back side. Push the side cover(RH) to the right and remove it from the Frame Assembly.
Precautions 5.4 Front Cover 1. Open the Front Cover. 2. Unlatch the Front Cover securing the Frame Ass'y. Then remove the Front Cover, as shown below.
Precautions 5.5 Scanner Ass'y 1. Before you remove the Scanner Ass'y, you should remove: - Rear Cover (see page 5-2) - Side Cover (LH, RH) (see page 5-3) 4. Pull up the Scanner Ass'y, as shown below. 2. Remove the 2 screws securing the Scanner Ass'y, as shown below. 3. Remove the 5 connectors and the ground wire screw from the main PBA as shown below. 5. Pull the Platen Cover upward and remove it.
Precautions 6. Remove the Scaner Harness Cable. 8. Remove the 3 screws and the connector and remove the OPE unit as shown below. 9. Remove the 4 screws securing the Scan Upper. 7. Lift the front part of the cover OPE dummy to release the hook connecting the cover with the scan assembly. 10. Unlatch the Scan Upper securing the Scan Ass’y Then pull the Scan Upper upward and remove it.
Precautions 11. Remove the CCD Cable, as shown below. 13. Push the Belt Holder and take out the Belt, as shown below. Spring Belt CCD Cable 12. Pull up the CCD Shaft and take out the Scanner Module. Scanner Module 14. Remove the Reduction Gear and Idle Gear, as shown below.
Precautions 15. Remove the 3 screws and take out the Motor Bracket. 17. Unlatch the Open Sensor and remove it, as shown below. Motor Braket Open Sensor 16. Unplug the one connector from the Open Sensor Ass'y. 18.
Precautions 5.6 ADF Motor Ass'y 1. Before you remove the ADF Motor Ass'y, you should remove: - Rear Cover (see page 5-2) - Side Cover (LH, RH) (see page 5-3) - Scanner Ass’y (see page 5-5) 5. Remove the 2 screws securing the Upper Cover and remove it, as shown below. Upper Cover 2. Remove the 2 screws securing the ADF Ass'y and remove it. ADF Ass’y 3. Remove the Open Cover, as shown below. 6. Unplug the one connector and remove 5 screws securing the ADF Motor Ass'y. Then take out the ADF Motor Ass'y.
Precautions 5.7 OPE Unit 1. Before you remove the OPE Unit, you should remove: - Rear Cover (see page 5-2) - Side Cover (LH, RH) (see page 5-3) - Scanner Ass’y (see page 5-5) 4. Remove the Key Pad from the OPE Cover. 2. Remove the 5 screws securing the OPE PBA from the OPE Cover. OPE Cover Key Pad OPE PBA 3. Remove the Contact Rubber from the OPE Cover.
Precautions 5.8 Middle Cover & Exit Roller 1. Before you remove the Exit Roller, you should remove: - Rear Cover (see page 5-2) - Side Cover (LH, RH) (see page 5-3) - Scanner Ass’y (see page 5-5) - Controller Shield Ass’y (see page 5-12) .4. Remove the Exit Gear and Bearing, as shown below. Bearing Exit Gear Exit Roller 2. Remove the 6 screws securing the Middle Cover and remove it. Main Frame 3. Unlatch the Middle Cover Securing the Frame Ass'y, using a proper tool as shown below.
Precautions 5.9 Controller Shield Ass’y 1. Before you remove the Main PBA, you should remove: - Rear Cover (see page 5-2) - Side Cover(LH, RH) (see page 5-3) 4. Remove the 2 screws connecting the LIU to the Controller Shield Ass'y and remove the LIU. 2. Remove the 8 connectors and the 5 screws connecting the Controller Shield Assembly to Middle Cover the frame and remove the assembly. Controller Shield Ass’y LIU 5. Remove the 3 screws to remove the bracket from the main board. 3.
Precautions 5.10 Engine Shield Ass’y & Exit Board 1. Before you remove the Engine Shield Ass'y, you should remove: - Rear Cover (see page 5-2) - Side Cover(LH, RH) (see page 5-3) - Scanner (see page 5-5) 3. Remove the 12 screws securing the Engine Shield Ass'y and remove it. Then unplug the all the connectors from the Main PBA and SMPS. 2. Unplug 4 connector. Main Connector AC Connector Engine shild Ass’y AC Connector 4. Remove the 2 screws to remove the exit board.
Precautions 5.11 SMPS 1. Before you remove the SMPS, you should remove: - Rear Cover (see page 5-2) - Side Cover(LH, RH) (see page 5-3) - Scanner Ass’y (see page 5-5) - Engine Shield Ass’y(see page 5-12) 2. Remove the 3 screws securing the Inlet Bracket and remove it Inlet Bracket 3. Remove the one screw securing the Engine Shield. 5-14 Service Manual 4. Remove the 4 screws securing the SMPS. Then lift the SMPS out, as shown below.
Precautions 5.12 Fuser Ass'y 1. Before you remove the Fuser Ass'y, you should remove: - Rear Cover (see page 5-2) 4. Remove the 2 screws securing the Halogen Lamp. Then take out the Halogen Lamp from the Heat Roller 2. Unplug the two connectors from the Main PBA and SMPS, as shown below. Then remove the 4 screws securing the Fuser Ass'y and remove it. Heat Roller Fuser Ass’y Halogen Lamp 5. Remove the 4 screws to remove the fuser cover as below. Remove the 2 screws to remove the guide input.. 3.
Precautions 6. Unwrap the Thermistor Harness, as shown below. 7. Remove the one screw securing the Thermister and remove it, as shown below.
Precautions 5.13 Fan 1. Before you remove the Fan, you should remove: - Rear Cover (see page 5-2) - Side Cover (RH) (see page 5-3) 2. Unplug the connector from the SMPS and remove the one screw. Then take out the Fan.
Precautions 5.14 LSU 1. Before you remove the LSU, you should remove: - Rear Cover (see page 5-2) - Side Cover (LH, RH) (see page 5-3) - Scanner Ass’y (see page 5-5) - Front Cover (see page 5-4) - Middle Cover (see page 5-11) 3. Unplug the two connectors. 2. Remove the 4 screws securing the LSU and remove it. 5.15 CRUM Board 1.
Precautions 5.16 Drive Ass'y 1. Before you remove the Drive Ass'y, you should remove: - Rear Cover (see page 5-2) - Side Cover (LH) (see page 5-3) - Shield Controller Ass’y (see page 5-9) 3. Take out the Drive Ass'y, then unplug the connector from the Motor PBA, as shown below. 2. Remove the 5 screws securing the Drive Ass'y.
Precautions 5.17 Transfer Ass'y 1. Before you remove the Transfer Ass'y, you should remove: - Rear Cover (see page 5-2) - Side Cover (LH, RH) (see page 5-3) - Scanner Ass’y (see page 5-5) - Front Cover (see page 5-4) - Middle Cover (see page 5-11) - LSU (see page 5-18) 4. Remove the transfer roller by pressing the hook securing the roller to the right using a tool. 2. Remove the 3 screws securing the Transfer Earth and remove it. Hook Transfer Earth 5. Unlatch the Bushing and remove it.
Precautions 5.18 Feed Ass'y 1. Before you remove the Feed Ass'y, you should remove: - Rear Cover (see page 5-2) - Side Cover (LH, RH) (see page 5-3) - Scanner Ass’y (see page 5-5) - Front Cover (see page 5-4) - Middle Cover (see page 5-11) - Drive Ass’y (see page 5-18) - Controller Shield Ass’y (see page 5-12) 4. Remove the 3 screws securing the Feed Bracket and remove it. Feed Bracket 2. Remove the 4 screws securing the Guide Paper Front and remove it. 5. Remove the Feed Gear2.
Precautions 6. Remove the Feed Gear1 Ass'y. 7. Pull up the Feed Roller and Feed Roller1.
Precautions 5.19 Pick-Up Ass'y & Solenoid 1. Before you remove the Pick-Up Ass'y, you should remove: - Rear Cover (see page 5-2) - Side Cover (LH, RH) (see page 5-3) - Front Cover (see page 5-4) - Scanner Ass’y (see page 5-5) - Middle Cover (see page 5-11) - Engine Shield Ass,y (see page 5-13) - Drive Ass’y (see page 5-18) - Controller Shield Ass,y (see page 5-12) - Feed Bracket (see page 5-21) 4. Remove the 2 s securing the Manual Solenoid and Pick-Up Solenoid.
Alignment & Adjustments 6 6. Alignment and Adjustments This chapter describes the main functions for service, such as the product maintenance method, the test output related to maintenance and repair, DCU using method, Jam removing method, and so on. It includes the contents of manual. 6.
Alignment & Adjustments 6.1.1 Copy & Scan Document Path Scanner Part 3 2 1 2 3 4 5 6 7 8 1 4 5 6 7 8 White-Sheet CCD-Module Doc. Paper (50 Sheets) Pickup Roller ADF Roller Sensor - Doc. Sensor - Regi Sensor - Scan Feed Roller Exit Roller 6.1.2 Printer Paper Path 1) After receiving print job, the printer feeds the printing paper from the cassette or manual feeder. 2) The fed paper passes the paper feeding sensor.
Alignment & Adjustments 6.2 Clearing Paper Jams Occasionally, paper can be jammed during a print job. Some of the causes include: • The tray is loaded improperly or overfilled. • The tray has been pulled out during a print job. • The front cover has been opened during a print job. • Paper was used that does not meet paper specifications. • Paper that is outside of the supported size range was used. If a paper jam occurs, the On Line/Error LED on the control panel lights red.
Alignment & Adjustments 6.2.1 Clearing Document Jams If a document jams while it is feeding through the ADF (Automatic Document Feeder),“DOCUMENT JAM ” appears on the display. 6.2.1.1 Input Misfeed 1) Open the ADF top cover. ADF. 3) Close the ADF top cover.Then load the documents back into the ADF. NOTE : To prevent document jams,use the document glass for the thick,thin or mixed documents.
Alignment & Adjustments 6.2.1.2 Exit Misfeed 1) Open the document cover and turn the release knob to remove the misfed documents from the exit area. 2) Close the document cover.Then load the documents back into the ADF. 6.2.1.3 RollerMisfeed 1) Open the document cover. 2) Turn the release knob so that you can easily remove the misfed document,and remove the document from the ADF or the feed area by carefully pulling it towards the right by using both hands. 3) Close the document cover.
Alignment & Adjustments 6.2.2 Clearing Paper Jams If paper jams occur,“PAPER JAM ” appears on the display..Refer to the table below to locate and clear the paper jam. PAPER JAM 0 PAPER JAM 2 PAPER JAM 1 BYPASS JAM : In the paper feed area : In the paper exit area : In the fuser area or around the toner cartridge : In the Bypass tray Follow the steps below to clear a jam.To avoid tearing the paper, pull the jammed paper out gently and slowly. 6.2.2.
Alignment & Adjustments 6.2.2.2 JAM 2 (In the Paper Exit Area) 1) Open and close the front cover.The jammed paper automatically exits the machine. If the paper does not exit,continue to Step 2. 4) Remove the jammed paper by gently pulling it straight out.. 2) Gently pull the paper out of the front output tray. 5) Close the rear cover. 6) Open and close the front cover to resume printing.
Alignment & Adjustments 6.2.2.3 JAM1 (In the Fuser Area of Around the Toner Cartridge Area) NOTE : The fuser area is hot.Be careful when removing paper from the machine. 1) Open the front cover and remove the toner cartridge. 2) Remove the jammed paper by gently pulling it straight out. 6-8 Service Manual 3) Replace the toner cartridge and close the front cover. Printing automatically resumes.
Alignment & Adjustments 6.2.2.4 BYPASS JAM (In the Bypass Tray) “BYPASS JAM ” appears on the display when the machine does not detect paper in the Bypass tray due to no paper or improper paper loading when you try to print using the Bypass tray. “BYPASS JAM ” also may occur when the paper is not properly fed into the machine through the Bypass tray.In that case,pull the paper out of the machine. 6.2.2.5 Tips for Avoiding Paper Jams By selecting the correct paper types,most paper jams can be avoided.
Alignment & Adjustments 6.3 User Mode(SCX-4920N) The table in the bellow explains the possible setting functions by user. The details about the ways to use are explained in the user manual. In the service manual, the items are about the possible set-up by user. 1.Paper Setting Paper Tray Paper Size 2.Copy Setup Change Default Timeout System Data 9.Maintenance 8.Machine Setup Clean Drum Clear Memory 6-10 Service Manual 6.
Alignment & Adjustments 6.3 User Mode(SCX-4920N) The table in the bellow explains the possible setting functions by user. The details about the ways to use are explained in the user manual. In the service manual, the items are about the possible set-up by user. 1.Paper Setting Paper Tray Paper Size 4.Fax Feature Delay Fax Priority Fax Add / Cancel 7.Sound/Volume Speaker Ringer Key Sound Alarm sound 2.Copy Setup Change Default Timeout 5.Advanced Fax 3.
Alignment & Adjustments 6.4 Tech Mode 6.4.1 How to Enter Tech Mode In service (tech) mode, the technician can check the machine and perform various test to isolate the cause of a malfunction. While in Tech mode, the machine still performs all normal operations. To enter the Tech mode To enter the Tech mode, press in sequence, and the LCD briefly displays ‘TECH’, the machine has entered service (tech) mode. 6.4.
Alignment & Adjustments 6.4.3 Data Setup SEND LEVEL You can set the level of the transmission signal. Typically, the Tx level should be under -12 dBm. Caution : The Send Fax Level is set at the best condition in the shipment from factory. Never change settings arbitrarily. DIAL MODE This function can choose dial method. *Default : Dial(Dial/Pulse) MODEM SPEED You can set the maximum modem speed.
Alignment & Adjustments FLASH UPGRADE The Firmware Upgrade function and has two methods, Local and Remote. (1) Local Machine • RCP(Remote Control Panel) mode This method is for Parallel Port.or USB Port Connect to PC and activate RCP(Remote Control Panel) to upgrade the Firmware. < Method > How to Update Firmware using RCP 1. Connect PC and Printer with Parallel Cable or USB Cable. 2. Execute RCP and select Firmware Update. 3. Search Firmware file to update with Browse Icon. 4.
Alignment & Adjustments 6.4.4 Machine Test SWITCH TEST Use this feature to test all keys on the operation control panel. The result is displayed on the LCD window each time you press a key. MODEM TEST Use this feature to hear various transmission signals to the telephone line from the modem and to check the modem. If no transmission signal sound is heard, it means the modem part of the main board malfunctioned. DRAM TEST Use this feature to test the machine's DRAM. The result appears in the LCD display.
Alignment & Adjustments 6.4.5 Report PROTOCOL LIST This list shows the sequence of the CCITT group 3 T.30 protocol during the most recent sending or receiving operation. Use this list to check for send and receive errors. If a communication error occurs while the machine is in TECH mode, the protocol list will print automatically. SYSTEM DATA This list provides a list of the user system data settings and tech mode settings.
Alignment & Adjustments 6.5 Engine Test Mode The Engine Tests Mode supplies useful functions to check the condition of the engine. It tests the condition of each device and displays the result of the test on the LCD. It is classified into 5 functions (0~4), and are shown below. Outline - In order to enter “Engine Test ” mode,,the method should be especial because this mode is developed for related engineers, not for users - After Entering the mode,the message,“Engine Test Mode ” is displayed..
Alignment & Adjustments 6.5.3 Detail Description(Engine Test Mode) Function Name 01.Motor Test 02.Pick Up Test 03.Fan Test 04.Manual Clutch Test 05.PTL Test 11.LSU Motor 12.LSU Hsync Test 13.LD Test 21.Feed Sen Test 22.Exit Sen Test 23.Cover Sen Test 24.Empty Sen Test 25.Manual Sen Test 31.Them ADC 180 32.Them ADC 140 33.Them ADC 120 34.Them ADC 100 41.MHV Test 42.Dev Bias Test 43.THV EN/NEG Test 44.THV ON(1300V) 45.THV ADC 1300V 46.
Alignment & Adjustments 6.6 Identify Sale Date This function confirms the date that consumer bought product and used the product for the first time. When the consumer first operate the machine, it will start a scan and page count. The time the machine was first used is remembered. These settings are are remembered after memory delete (Clear All Memory). < Method > Press MENU, #, 1, 9, 3, # in sequence.Firmware version is displayed on LCD.
Alignment & Adjustments 6.7 Consumables and Replacement Parts The cycle period outlined below is a general guideline for maintenance. The example list is for an average usage of 50 transmitted and received documents per day. Environmental conditions and actual use will may vary. The cycle period given below is for reference only.
Alignment & Adjustments 6.8 Abnormal Image Printing and Defective Roller If abnormal image prints periodically, check the parts shown below. L S U Fuser Toner Cartridge CR DR OPC PR SR PTL MP Sensor FR K/ R TR P IC 1 2 3 4 5 6 7 OPC Drum Charge Roller Supply Roller Transfer Roller Heat Roller Pressure Roller Developing Roller No Roller Abnormal image period Kind of abnormal image 1 OPC Drum 75.5mm White spot, Block spot 2 Charge Roller 37.7mm Black spot 3 Supply Roller 37.
Alignment & Adjustments 6.9 Error Messages The display on the front panel shows the messages to indicate the printer’s status or errors. Refer to the tables below to understand the message’s meaning and clear the problem if necessary. The messages and their meanings are listed in alphabetical order, with numbered messages following. [Manual F. Jam] Meaning: A paper jam has occurred in the manual feeder or the multi-function printer detects improper feeding from the manual feeder.
Alignment & Adjustments Group Not Available Meaning: You have tried to select a group location number where only a single location number can be used, such as when adding locations for a broadcasting operation. Solution: Use a speed dial number or dial the number manually using the number keypad. [Hsync Error] [ LSU Error] Meaning: A problem has occurred in the Laser Scanning Unit (LSU). Solution: Use TECH mode to test LSU. Replace the LSU [No Cartridge] Meaning: The toner cartridge is not installed.
Alignment & Adjustments [Paper Jam 2] Check Outside Meaning: Paper has jammed in the fuser area. Solution: Clear the jam. Power Failure Meaning: The power has been turned off and then on and the printer’s memory has not been saved. Solution: The printer’s memory was not saved due to a power failure. The job will need to be started over. Registered Meaning: The group dial location is already registered with another speed dial number. Solution: Select another group dial location.
Troubleshooting 7 7. Troubleshooting 7.1 Paper Feeding Problems 7.1.1 Wrong Print Position • Description Printing begins when the paper is in the wrong position. Check and Cause Solution A defective feed sensor actuator can cause incorrect timing. Replace the defective actuator 7.1.2 JAM 0 1. Paper has not exited from the cassette. 2. Jam-0 occurs if the paper feeds into the printer. • Description Check and Cause L S U Fuser Toner Cartridge CR DR OPC PR SR PTL TR 1.
Troubleshooting 7.1.3 JAM 1 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. • Description Check and Cause Solution L S U Fuser Toner Cartridge CR DR EXIT Sensor OPC PR SR PTL FR 1. If the recording paper is jammed in front of or inside the fuser. 1. Replace the SMPS. 2.
Troubleshooting 7.1.5 Multi-Feeding • Description Multiple sheets of paper are fed at once. Check and Cause Solution 1. Solenoid malfunction(the solenoid does not work properly): Perform Engine Test Mode : Diagnostic Mode code 0. 1. Replace the solenoid if necessary. 2. Friction-Pad is contaminated with foreign matter.(oil..) 2. Clean the friction-pad with soft cloth dampened with IPA(Isopropyl Alcohol). 3. The face of paper is blended. 3. Use the smooth paper. 7.1.
Troubleshooting 7.1.7 Paper rolled in the OPC • Description Paper is rolled up in the OPC. Check and Cause Solution 1. Paper is too thin. 1. Recommend to use normal paper thickness. 2. The face of paper is curled. 2. How to remove the rolled paper in the OPC. • Remove the paper while turning the OPC against the ongoing direction. • Clean fingerprints on the OPC softly with soft cloth dampened with IPA(Isopropyl Alcohol) or tissue. 7.1.
Troubleshooting 7.2. Printing Problems (malfunction) 7.2.1 Defective Operation (LCD WINDOW • Description ) Display Strange characters are displayed on the OPE Panel and buttons are not operated. Check and Cause Solution 1. Clear the memory.(see page 6.5.3) 1. Try again after clearing the memory. 2. Check if OPE HARNESS is connected to the Connection B'd correctly. 2.
Troubleshooting 7.2.3 Not functioning of the fuser gear due to melting away • Description The Motor breaks away from its place due to gear melting away. Check and Cause 1. Check the Heat Lamp. Solution 1. Replace the Fuser. 2. Replace the Main PBA. 3. Replace the SMPS. 7.2.4 Paper Empty • Description The paper lamp on the operator panel is on even when paper is loaded in the cassette. Check and Cause Solution 1. Bending or deformation of the actuator of the paper sensor. 1.
Troubleshooting 7.2.6 Door Open • Description The ERROR lamp is on even when the print Door is closed. Check and Cause Solution 1. The hook lever in the Front Cover may be defective. 1. Replace the hook lever, if defective. 2. Check the Connector(CN1) and Circuit of the Cover Switch department in the Main PBA. 2. Check the insertion of the Door Open S/W Connect. 3. Replace the Main PBA or Door Open S/W. 7.2.
Troubleshooting 7.2.8 Defective Motor operation • Description Main Motor is not driving when printing, and paper does not feed into the printer, resulting 'Jam 0'. Check and Cause Solution 1. Motor harness or sub PCB may be defective. 1. Check the Motor harness, replace it, if defective. 2. Perform Engine Test Mode diagnostic code 0 and Check the Motor operation. 2. Replace the SMPS, if necessary. 7.2.
Troubleshooting 7.2.10 Vertical Line Getting Curved • Description When printing, vertical line gets curved. Check and Cause 1. If the supply of +24v is unstable in the Main Control board linking with LSU, check drive by Engine Test Mode : Diagnostic Code 1 LSU Motor on. Solution 1. Replace LSU. 2. Replace the Main Control board.
Troubleshooting 7.3 Printing Quality Problems 7.3.1 Vertical Black Line and Band • Description Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer 1. Straight thin black vertical line occurs in the printing. 2. Dark black vertical band occur in the printing. Check and Cause Solution 1. Damaged develop roller in the Developer. Deformed Doctor-blade. 1. If causes 1 and 2 occur in the developer cartridge, replace the developer and try to print out. 2.
Troubleshooting 7.3.3 Horizontal Black Band • Description 1. Dark or blurry horizontal stripes occur in the printing periodically. (They may not occur periodically.) Check and Cause Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Solution 1. Bad contacts of the voltage terminals to developer. 1. Clean each voltage terminal of the Charge, Supply, Develop and Transfer roller. (remove the toner particles and paper particles) 2. The rollers of developer may be stained.
Troubleshooting 7.3.5 Light Image • Description The printed image is light, with no ghost. Check and Cause Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Solution 1. Develop roller is stained when the toner of developer cartridge is almost consumed. 1. Check if the Toner Save Mode is off. 2. Ambient temperature is below than 10°C. 2. No 1 : Replace the developer cartridge and try to print out. 3.
Troubleshooting 7.3.7 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 transfer roller bushing or holder is damaged. 1. Replace both the left and right Spring Holder. 2. The life of the Developer has expired. 2.
Troubleshooting 7.3.9 Ghost (1) • Description Check and Cause 75.5 mm Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Ghost occurs at 75.5 mm intervals of the OPC drum in the whole printing. Solution 1. Bad contacts caused by contamination from toner particles between high voltage terminal in the main body and the electrode of the Developer. 1. Clean the contaminated terminals. 2.
Troubleshooting 7.3.11 Ghost (3) • Description White ghost occurs in the black image printing at 35 mm intervals. Check and Cause Solution 1. The life of the developer may be expired. 1. Problem in the toner cartridge, replace the toner cartridge and try to print out. 2. The abnormal voltage and bad contact of the terminal of the supply roller 2. Check the approved voltage of the supply roller and contact of the terminal and adjust if necessary.
Troubleshooting 7.3.14 Stains on back of the page • Description Digital Digital Pri Digital Printer Digital Printer Digital Printer The back of the page is stained at 56.1 mm intervals. Check and Cause Solution 1. Transfer roller is contaminated. 1. Perform the OPC Cleaning Mode Print 2 or 3 times. Run Self-Test to remove the contamination of the transfer roller. 2. Pressure roller is contaminated. 2. Replace the transfer roller if contaminated severely. 3.
Troubleshooting 7.4 Fax & Phone Problems 7.4.1 No Dial Tone • Description While on-hook button is pressed, there is no dial tone. Check and Cause Solution 1. Check if the telephone line cord is connected to TEL LINE correctly. 1. If the telephone cord is normal but there is no dial tone, then try to replace the LIU B'd. 2. Check if it makes CLICK sound while OHD key is pressed. 2. If you cannot hear the OHD CLICK sound, the OPE Ass’y may be defective. Try to replace the OPE Ass’y. 3.
Troubleshooting 7.4.3 Defective FAX FORWARD/RECEIVE • Description The FAX FORWARD/RECEIVE is not functioning. Check and Cause 1. Check if you can catch a dial tone by pressing OHD. 2. Check if you can catch a RECEIVE tone while MODEM testing in the TECH Mode. Solution 1. If the MODEM testing is normal and there is no dial tone, then try to replace the LIU B'd. 2. If the MODEM testing is abnormal, try to replace the Main B'd. 7.4.
Troubleshooting 7.4.5 Defective FAX RECEIVE (1) • Description FORWARD is functioning, but RECEIVE is not functioning or the received data are broken. Check and Cause 1.Check if there is NOISE when pressing on-hook dial. Solution 1.If it makes NOISE while on-hooking, replace or repair the telephone line. 2.Check the RECEIVE condition by trying to receive a FAX at another fax machine. 7.4.6 Defective FAX RECEIVE (2) • Description The received data are lengthened or cut in the printing.
Troubleshooting 7.4.8 Defective FAX RECEIVE (4) • Description The received data is reduced by more than 50% in the printing. Check and Cause Check the FAX status of the forwarding side. Solution After checking the data of the forwarding side, correct the FAX of the forwarding side. 7.4.9 Defective Automatic Receiving • Description The automatic receiving function is not working. Check and Cause Solution 1. Check if the RECEIVE Mode is TEL MODE or FAX MODE. 1.
Troubleshooting 7.5 Copy Problems 7.5.1 White Copy • Description Blank page is printed out when copy. Check and Cause Solution 1. Check the Scan-Cover open. 1. Room light ca transit a thin original. 2. Check shading profile. 2. Remake shading profile in the tech mode. 3. Check white/black reference voltage in Main PBA. 3. Replace U60 if it is defective. • U60-154 = 0.5V • U60-155 = 3.3V 7.5.2 Black Copy • Description Black page is printed out when Copy. Check and Cause Solution 1.
Troubleshooting 7.5.3 Abnormal noise • Description There is noise when copy. Check and Cause Solution 1. Check the Scanner Motor and any mechanical disturbance. 1. Check the right position of the Scanner Motor, and check the any mechanical disturbance in the CCD carriage part. 2. Check the Motor Driver in Driver PBA. 2. If any driver is defective, replace it. • Connection PBA U4-1, 19 or U5-1, 19=0V to 24V swing signal when operating. 7.5.
Troubleshooting 7.6 Scanning Problems 7.6.1 Defective PC Scan • Description The PC Scan is not functioning at all. Check and Cause Solution 1. Check the Cable (USB or Parallel) 1. If the PC and the cable are not connected properly, reconnect it. 2. Check if the driver is installed properly. 2. After confirming that it is proper by performing a PC printing test related to driver setup, if it is not so, reinstall it. (Refer to User's Manual.) 3. Check if copy function operates normally. 3.
Troubleshooting 7.7 Toner Cartridge Service It is not guaranteed for the default caused by using other toner cartridge other than the cartridge supplied by the Samsung Electronic or caused by non-licensed refill production. 7.7.1 Precautions on Safe-keeping of Toner Cartridge Excessive exposure to direct light more than a few minutes may cause damage to the cartridge. 7.7.
Troubleshooting 7.7.4 Signs and Measures at Poor toner cartridge Fault Light image and partially blank image (The life is ended.) Signs Cause & Check • The printed image is light or unclean and untidy. 1. If the image is light or unclean and untidy printed image Shake the developer and then recheck. • Some part of the (1)NG: Check the weight of the image is not printdeveloper ed. (2)OK: Lack of toner, so the life is nearly closed. • Periodically a noise 2.
Troubleshooting Fault White Black spot Signs Cause & Check 1. If light or dark periodical black dots occur, this is because the developer rollers are contaminated with foreign substance or paper particles. • White spots occur in the image period- (1) 37.7 mm interval : Charged roller ically. (2) 75.5 mm interval : OPC cycle • Light or dark black dots on the image occur periodically. 2.
Troubleshooting Fault Ghost & Image Contamination Signs Cause & Check Solution • The printed image is too light or dark, or partially contaminated black. 1. The printed image is too light or dark, or partially contaminated black. (1)Check whether foreign substance or toner are stuck to the terminal(point of contact) of the developer. (2)Check whether the terminal assembly is normal. 1. All of 1, 2, 3 above (1)Remove toner and foreign substances adhered to the contact point of the developer.
Troubleshooting 7.8 Network Problems Troubleshooting 7.8.1 General Problems Problem System does not function with some wrong values entered y mistake while configuring. Not able to access from SNMP Manager. SyncThru is unable to automatically detect print servers. SyncThru is unable to automatically detect print servers. You cannot see any of DHCP server, BOOTP server or RARP server,when you want to set IP address to print server. Print server does not print using TCP/IP protocol.
Troubleshooting 7.8.2 Macintosh Problems Problem The printer name is not displayed in the Chooser. The printer drops letters. Solution 1.Make sure the printer is connected to network correctly. 2.Make sure the printer is configured in SyncThru using the new name. 3.After turning on the printer,wait 3 minutes,then check it again. 4.Make sure that your Macintosh is connected to the network through Ethernet. 5.When the Macintosh and network printer are in the same network, check above items again.
Troubleshooting Problem SyncThru is unable to automatically detect printers. The printer does not print. Solution 1.Check LAN cable is connected to the printers. •Check LAN cable is connected to the printers yourself. •Make sure that there are the connected printers shown in network neighborhood.If not, check the communication status of the printers. •If IP address is assigned to the computers, try ping command. 2.If the protocols of NPC are disabled, DLC/LLC should be installed in the computers.
Exploded View & Parts List 8 Up-date On March. 04. 2004 8. Exploded Views and Parts List 8.1 Main Assembly Exploded view ............................................................................... page(8-2) 8.2 Rx Drive Ass’y Exploded view ................................................................................ page(8-5) 8.3 ADF Assembly Exploded view ................................................................................ page(8-6) 8.4 OPE Assembly Exploded view .....................
1-3 1-1 1-2 8-2 Service Manual 1-5 1-4 0 12-2 20 10-4 10-5 10-3 1 10-6 10-1 10-2 10 12-3 12-1 7 12 11 18 9 3 22 26 28 8 6 19 4 16 27 6-3 6-1 5 14 6-4 17-1 2 6-2 14-3 17-3 17 14-5 24 14-4 14-1 13 14-2 Exploded View & Parts List 8.
Exploded View & Parts List Main Assembly Parts List SA : Service Available O : Service available X : Service not available No. 0 1 Description SEC.
Exploded View & Parts List Main Assembly Parts List SA : Service Available O : Service available X : Service not available No. 8-4 Description SEC.
Exploded View & Parts List 8.2 RX Drive Assembly 0 8 6 7 1 9 4 2 5 3 4 5 RX Drive Assembly Parts List SA : Service Available O : Service available X : Service not available No. Description SEC.
Exploded View & Parts List 8.
Exploded View & Parts List ADF Assembly Continued.
Exploded View & Parts List ADF Assembly Parts List SA : Service Available O : Service available X : Service not available No. SEC.
Exploded View & Parts List ADF Assembly Parts List(cont.) SA : Service Available O : Service available X : Service not available No. Description SEC.
Exploded View & Parts List 8.
Exploded View & Parts List OPE Unit Assembly Parts List SA : Service Available O : Service available X : Service not available No. Description SEC.
Exploded View & Parts List 8.
Exploded View & Parts List Scanner Assembly Parts List SA : Service Available O : Service available X : Service not available No. Description SEC.
Exploded View & Parts List 8.6 Middle Cover Assembly 0 2 4 1 3 Middle Cover Assembly Parts List SA : Service Available O : Service available X : Service not available No. 8-14 Description SEC.
27-1 27-2 46-2 46-1 47-2 27-9 27-3 50 47-1 46 27-7 27-8 57 26 47-4 27-4 47-3 47 57-2 57-1 45-3 27 45-2 43 45-1 27-4 27-6 47-5 29 56 45 44 32 34 17 39 59 25 42 41 40 28 30 71 Transfer Roller 24 58 37 38 49 25 20 51 23 31 36 62 5 5 22 61 7 18 5 19-1 72 49 19-2 15 65 63-1 55 63-2 1 14 13 68 65-4 65-2 63 65-1 6 11 54 65-3 58 61 10 71 73 16 3 8 70 9 12 60 48 4 2 Exploded View & Parts List 8.
Exploded View & Parts List Frame Assembly Parts List SA : Service Available O : Service available X : Service not available No. 8-16 Description SEC.
Exploded View & Parts List Frame Assembly Parts List(Cont.) SA : Service Available O : Service available X : Service not available No. Description SEC.
Exploded View & Parts List Frame Assembly Parts List(Cont.) SA : Service Available O : Service available X : Service not available No. 8-18 Description SEC.
Exploded View & Parts List 8.
Exploded View & Parts List Fuser Assembly Parts List SA : Service Available O : Service available X : Service not available No. SEC.
Exploded View & Parts List 8.
Exploded View & Parts List Cassette Assembly Parts List SA : Service Available O : Service available X : Service not available No. 8-22 Description SEC.
42 1 39-3 38 0 39-8 40 39-6 39-10 39-7 39-4 39-2 28 39-1 39-5 1-3 20 21 39-9 1-4 34 23 39 22 24 19 18 37 17 11 15 13 33 32 9 10 16 14 6 7 31 12 8 25 30 36 34 2 35 41 27 5 28 26 3 4 29 Exploded View & Parts List 8.
Exploded View & Parts List SCF(Option Cassette Frame) Assembly Parts List SA : Service Available O : Service available X : Service not available No. 8-24 Description SEC.
Exploded View & Parts List SCF(Option Cassette Frame) Assembly Parts List SA : Service Available O : Service available X : Service not available No. Description SEC.
Exploded View & Parts List MEMO 8-26 Service Manual
FLATEN MOTOR 600 DPI, COLOR CCD FLAT COVER S ENSOR 3P MICOM LCD/LED Drive Key Scan OPE 14P LCD, 16*2 LINES TEA3718 X 2EA TEA3718 X 2EA FLATEN MOTOR DRIVER CCD DRIVING PART CIP 4 AFE JBIG Codec RTC DMA Control Motor Control I/O PORT AFE I/F Image Processer CIP4 IEEE1284/USB2.
MAIN MOTOR ADF MOTOR F LATEN MOTOR : : : : MA MB MA MB SCF Unit 1 2 3 4 - P_POS - P_PEG - P_DET SENSOR ADF MOTOR DRIVER CCD MODULE FL AT E N COVE R S EN SOR DGND +5V OPE_T XD OPE_RST OPE_RXD nLED8 : : : : MA MB MA MB 1 2 3 4 : : : : MA MB MA MB 1 : +3.
Circuit Diagram 11 11. Circuit Description 11.1 System Configurations SCX-4920N is roughly made up Main Control part, Operation Panel part, Scanner part, Line Interface part and Power part. Each Part is separated Module which focus on common and standard design of different kind products. main control part adopting Fax & LBP Printer exclusive Controller is composed of 2 CPU and 1 Board. Scanner part is composed of ADF and Platen and is connected with Main by Harness .
Circuit Diagram Laser MFP 1600n CONNECTION DIAGRAM OPE B’d LCD MODULE 1 6 X 2 LINE 1 : +5V 2 : SIGNAL 3 : GND FL AT E N COVE R S EN SOR CCD MODULE 1 2 3 4 : : : : MA MB MA MB ADF MOTOR DRIVER SENSOR - P_POS - P_PEG - P_DET SCF Unit MAIN MOTOR : : : : : : 1 : P_EMPTY 3,4 : +5V 7 : +12V 13 : MP_EMPTY 15,22,23 : N.C 17 : N.C 19 : THV_EN 21 : MHV_PWM 25 : FUSER_ON DGND +5V OPE_TXD OPE_RST OPE_RXD nLED8 : : : : MA MB MA MB SMPS / HVPS - SENSOR MP SENSOR P_EMP SEN. EXIT SEN.
Circuit Diagram 2) Flash Memory : Record System Program, and download System Program by PC INTERFACE. FAX for Journal List, and Memory for One Touch Dial, Speed Dial List. - Size : 4M Byte - Access Time : 70 nsec 3) SDRAM : is used as Swath Buffer in Printing, Scan Buffer in Scanning, ECM Buffer in FAX receiving, and System Working Memory Area - size 32MB : 32Mbyte(Basic).
Circuit Diagram 11.2 FAX Section 11.2.1 Modem Part 11.2.1.
Circuit Diagram 11.2.1.2 Modem(SFM336) specification • 2-wire half-duplex fax modem modes with send and receive data rates up to 14,400 bps V.17, V.33, V.29, V.27 ter, and V.21 Channel 2 - Short train option in V.17 and V.27 ter • PSTN session starting - V.8 and V.
Circuit Diagram 1) Line Interface Signal of Tel Line and LSD is Analog Signal.
Circuit Diagram 1) Application Network: 3 PSTN (RJ-11) 2) Communication Mode: Half-Duplex, ITU V.8, V.34, V.17, V.29, V.21, ECM > Modem will auto train down only. >. 3) Communication Standard: ITU-T Group 3 4) Max. Modem Speed: 33.6 Kbps 5) Encoding: MH, MR, MMR, JPEG 6) Transfer Rate: 3 seconds (standard resolution, MMR, 33.6kbps) > Phase “C” by ITU-T No.
Circuit Diagram This is Connection Part between system and PSTN(Public Switched Telephone Network), and 1 st side circuit is usually located. Main functions are Line Interface, Telephone Connection and Line Condition Monitoring. 1. Telephone Line Connection • Modular Plug : RJ-11C • LIU PBA Modular Type : 623 PCB4-4 • Line Code Length : 2m • Line Code Color : Ivory 11.2.1.
Circuit Diagram 11.3 Scanner Section 11.3.1 Scan Part Pictorial signal input part : output signal of CCD passes through Bypass_Cap change to ADC at AFE_CIP4 , and defined signal between AFE_CIP4 and CIP4 processes the Image signal. When AFE accept each pixel, CDS(Correlated Double Sampling ) technique which samples arm-level twice is used on each pixel by using CIP4 signal.
Circuit Diagram 11.3.
Circuit Diagram 1) Scanning Device: Color CCD (Charge Coupled Device) Module 2) Supported Operating Systems: Windows 98/2000/NT4.0/ME/XP, MAC (English only, no status monitor, web download only) 3) Compatibility: TWAIN Standard 4) Maximum Scan Width: 216mm (8.5 inches) 5) Effective Scan Width: 208mm (8.2 inches) 6) Optical Resolution: 600x1200 dpi 7) Interpolated Resolution: Maximum 4800 dpi 8) Preview Scan: 75 dpi ADF Linearity : 20 sec. (Letter, 300dpi, USB) Gray Scale : 64 sec.
Circuit Diagram 11.4 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, Transferring, Fusing, Cabinet and H/W comprising the main control board, power board, operation panel, PC Interface. The main controller is consisted of Asic(SPGPm) parts, Memory parts, Engine interface parts and it functions as Bus Control, I/O Handing, drivers & PC Interface by CPU.
Circuit Diagram 11.4.
Circuit Diagram 11.4.2 Speed : 166MHz core(ARM946ES) operation, 60MHz bus operation ROM CONTROLLER EXTERNAL DMA CONTROLLER (4CH) ADDR/ DATA MUX ARM946E-S CORE 16KB ICACHE 16KB DCACHE USB2.
Circuit Diagram 11.5 Copier Section 1) Copy Mode: Black and White 2) Scanner Type: CCD with Flatbed/Platen and ADF 3) Maximum Size of Original: > Platen: 216 x 297 mm > ADF: Legal (216 x 356 mm) (max.
Circuit Diagram 11.6 Telephone Section 1) Speed Dial: 200 Locations (46 digits maximum per location) 2) On-hook Dial (manual fax): Yes 3) Last Number Redial: Yes 4) Automatic Redial: Yes 5) Pause: Yes (using Redial key) 6) Ringer Volume: Off, Low, Medium, High 7) Tone/Pulse: Selectable (Tech Mode Only no Telecom certification for Pulse mode) 11.7 SMPS & HVPS Section The SMPS supplies DC Power to the System.
Circuit Diagram • Charge Voltage (MHV) > Input Voltage : 24 V DC & 15% > Output Voltage : -1.3KV ~ -1.8KV DC +/- 50V > Output Voltage Rising Time : 50 ms Max > Output Voltage Falling Time : 50 ms Max > Output Loading range : 30 M * ~ 1000 M * > Output Control Signal(MHV-PWM) : CPU is HV output when PWM is Low • Cleaning Voltage (THV-) > The (+) Transfer Voltage is not outputted because the THV PWM is controlled with high.
Circuit Diagram 11.7.2 SMPS (Switching Mode Power Supply) It is the power source of entire system. It is assembled by an independent module, so it is possible to use for common use. 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 heater control part, which supplies the power to fuser. SMPS has two output channels. Which are +5V and +24V.
Circuit Diagram • Consumption Power NO ITEM CH2 (+5V) CH3 (+24V) Remark 1 Stand-By 0.07A 0.4 A AVG:55 Wh 2 PRINTING 0.14A 2.0 A AVG 350 Wh 3 Sleep-Mode 0.01A 0.4A AVG : 20 Wh • Length of Power Cord : 1830 & 50mm • Power Switch : Use • Feature > Insulating Resistance : 50 ( or more (at DC 500V) > Insulating revisiting pressure : Must be no problem within 1 min. (at 1500Vac,10mA) > Leaking Current : under 3.
Circuit Diagram 11.7.3 Fuser Ac Power Control Fuser(HEAT LAMP) gets heat from AC power. The AV power controls the switch with the Triac, a semiconductor switch. The ‘ON/OFF control’ is operated when the gate of the Triac is turned on/off by Phototriac (insulting part). In other words, the AC control part is passive circuit, so it turns the heater on/off with taking signal from engine control part.
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Dell Schematic Main(17/17) Schematic Diagram Service Manual This Document can not be used without Samsung’s authorization.
12.2 SMPS Circuit Diagram(1/3) Schematic Diagram AR1 DSS-601M SW1 F1 3024-P3T4DBKBKR2125V 8A LF2 F2 125V 5A CH925130 LF1 TR1512V INLET1 472MAA BD1 D3SBA60 C4 224 R1 1/2W 560K R14 - + R105 R106 R107 R129 R130 R131 1/2W 3.3K 1/2W 3.3K 1/2W 3.3K 1/2W 3.3K 1/2W 3.3K 1/2W 3.3K 1/2W 3.3K 1/2W 3.3K R104 1/2W 3.3K F101 R108 1W 150-J R112 2.
SMPS Circuit Diagram(2/3) Schematic Diagram AR1 DSS-601M SW1 F1 3024-P3T4DBKBKR2125V 8A LF2 F2 125V 5A CH925130 LF1 TR1512V INLET1 472MAA BD1 D3SBA60 C4 224 R1 1/2W 560K R14 - + R105 R106 R107 R129 R130 R131 1/2W 3.3K 1/2W 3.3K 1/2W 3.3K 1/2W 3.3K 1/2W 3.3K 1/2W 3.3K 1/2W 3.3K 1/2W 3.3K R104 1/2W 3.3K F101 R108 1W 150-J R112 2.
SMPS Circuit Diagram(3/3) Schematic Diagram AR1 DSS-601M SW1 F1 3024-P3T4DBKBKR2125V 8A LF2 F2 125V 5A CH925130 LF1 TR1512V INLET1 472MAA BD1 D3SBA60 C4 224 R1 1/2W 560K R14 - + R105 R106 R107 R129 R130 R131 1/2W 3.3K 1/2W 3.3K 1/2W 3.3K 1/2W 3.3K 1/2W 3.3K 1/2W 3.3K 1/2W 3.3K 1/2W 3.3K R104 1/2W 3.3K F101 R108 1W 150-J R112 2.
12.3 Dell Schematic LIU Schematic Diagram Service Manual This Document can not be used without Samsung’s authorization.
