1. Precautions The cautions in the below are items needed to keep in mind when maintaining and servicing. Please read carefully and keep the contents in mind to prevent accidents while servicing and to prevent that the machine gets damage. 1.1 Warning for safety.
Precautions 1.2 Caution for safety 1.2.1 Precaution related noxious material The toner in a printer cartridge contains a chemical material, which might harm human body if it is swallowed. Please keep children out of the toner cartridge. 1.2.2 Precaution related electric shock or fire It is possible to get electric shock or burn by fire if you don't fallow the instructions of the manual.
1.2.3 Precaution related handling the machine. If you ignore this information, you could get harm and machine could be damaged. (1) Do not install it on the different levels, or slanted floor. Please confirm whether it is balanced or not after installation. If it is unbalanced, an accident can be hap- pened due to the machine fell over.
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.
1.4 Tool for Troubleshooting The following tools are recommended for safe and smooth troubleshooting described in this service manual. DCU(Diagnostic Control Unit) Standard : Test equipment to diagnose the Laser printer supplied by Samsung Electronics. DVM(Digital Volt Meter) Standard : Indicates more than 3 digits. Electronic Scale Standard : Equipment to check the weight of con- sumables(toner cartridge) supplied by Samsung...
2.5 TONER Cartridge (Developer) ITEM Life span 3,000 sheets Developing Non-magnetic Mono Conponent Contact Developing Charging Conductive Roller Charging Toner checking sensor Not Available Ozone 0.1PPM or less Style Single cartridge 2-Paper Handling Specifications Please refer to "Paper Specifications" on user guide •...
3. Disassembly and Reassembly 3.1 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 procedure must be restored as close as possible to their original positions.
Disassembly and Reassembly 3.2 Top Cover 1. Pull the Cassette out of the printer. Cassette 2. Remove the Front Cover in the direction of arrow. Front Cover 3. Remove four screws. Service Manual 4. Unlatch the front ends of the Top Cover. 5.
3.3 Fuser 1. Before you remove the Fuser, you should remove: - Top Cover(see page 3-2) 2. Unplug two connectors(Block) from the boards, then remove four screws. 3. Remove two screws and take the Thermostat out of the Fuser. Thermostat 4.
Disassembly and Reassembly 3.4 Exit Roller 1. Before you remove the Fuser, you should remove: - Top Cover(see page 3-2) 2.Remove the Exit Gear, Bearing and Exit Roller. 3.5 LSU 1. Before you remove the Fuser, you should remove: - Top Cover(see page 3-2) 2.
3.6 Fan 1. Before you remove the Fuser, you should remove: - Top Cover(see page 3-2) 2. Unplug the connector from the SMPS and remove the one screw. Then take out the Fan. 3.7 Driver Ass’y 1. Before you remove the Fuser, you should remove: - Top Cover(see page 3-2) 2.
Disassembly and Reassembly 3.8 Engine Shield Ass’y 1. Before you remove the Fuser, you should remove: - Top Cover(see page 3-2) - Fuser Connector(see page 3-3) 2. Remove the fourteen screws securing from the Engine Shield Ass’y and unplug the all connec- tors.
3.10 SMPS 1. Before you remove the Fuser, you should remove: - Top Cover(see page 3-2) - Engine Shield Ass’y(see page 3-6) 2. Unplug one connector and remove three screws then take the Inlet Ass’y out. Inlet Bracket Disassembly and Reassembly 3.
Disassembly and Reassembly 3.11 Transfer Roller 1. Before you remove the Fuser, you should remove: - Top Cover(see page 3-2) - LSU(see page 3-4) 2. Remove three screws and take the Transfer Earth out. Transfer Earth Service Manual 3. Unplug the PTL Holder Connector, then remove the PTL Holder and PTL Lens, as shown below.
3.12 Feed Roller 1. Before you remove the Fuser, you should remove: - Top Cover(see page 5-2) - Drive Ass’y(see page 5-7) 2. Remove two screws from the Guide Paper and take it out. Guide paper 3. Pull up the Feed Idle Bush and Feed Idle Shaft, as shown below.
Disassembly and Reassembly 3.13 Pick Up Roller 1. Before you remove the Fuser, you should remove: - Top Cover(see page 3-2) - Drive Ass’y(see page 3-5) - Engine Shield Ass’y(see page 3-6) 2. Remove the Pick up Gear Ass’y, as shown below.
4. Troubleshooting 4.1 How to use DCU 4.1.1 DCU Setup You can examine the malfunction of the printer. To perform DCU, open the front discharge cover and leave the connect the harness wire(10 pin/4 pin) to the CN10(4 pin) of the Main control board. STATUS DIAGNOSTIC DIAGNOSTIC CODE...
TROUBLESHOOTING 4.1.2 Code Connect DCU to the printer and turn the power on. It show 7 Segment FND on the panel and each code tells the function of the printer. 1) Normal Code While printing or warming up, it indicate the position of the paper Code State Warm up...
4.1.3 Self Diagnostic Mode If Error code occurs due to malfunction of the printer, perform Self Diagnostic Mode to solve the problem. The printer works only in the self-test mode to solve the malfunction problem. To enter the self-test mode, turn the power on pressing the buttons of [Down], [Shift] and [Stop] at the same time.
TROUBLESHOOTING Code Paper Empty Sensor Test : If activate the Actuator of the PEMPTY Sensor, the left and right of the three LEDs are Paper Empty Sensor ON/OFF Feed & Exit Sensor Test Test the Feed sensor and Discharge sensor in the same way as '07'. Feed Sensor ON/OFF Exit Sensor ON/OFF Cover Open Sensor Test...
Function Enter Motor Motor Run Mhv On THV(-) Thv Negative On THV(+) Thv On Dev On LSU Run Pickup On Pic kUp PEmpty Sensor Cover Fus er Fuser On HotBurn On HotBur n Clean Print Clean Printing Refer ence PTL On Fan On Manual Manual Pickup On...
TROUBLESHOOTING 4.2 Bad image 4.2.1 Vertical Black Line and Band 1. Straight thin black vertical line occurs in the printing. • Description 2. Dark black vertical band occur in the printing. Digital Printer 1. Damaged develop roller in the Developer. Digital Printer Deformed Doctor-blade or cleaning- Digital Printer...
4.2.3 Horizontal Black Band 1. Dark or blurry horizontal stripes occur in the printing periodically. • Description (They may not occur periodically.) Digital Printer 1. Bad contacts of the voltage terminals to Digital Printer developer. Digital Printer Digital Printer Digital Printer 2.
TROUBLESHOOTING 4.2.5 Light Image • Description The printed image is light, with no ghost. Digital Printer 1. Develop roller is stained when the toner Digital Printer of developer cartridge is almost con- Digital Printer sumed. Digital Printer Digital Printer 2. Ambient temperature is below than 10°C. 3.
4.2.7 Uneven Density • Description Print density is uneven between left and right. 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 bushing or holder is damaged.
TROUBLESHOOTING 4.2.9 Ghost (1) • Description Ghost occurs at 75.5 mm intervals of the OPC drum in the whole printing. Digital Printer 1. Bad contacts caused by contamination Digital Printer from toner particles between high voltage Digital Printer terminal in the main body and the elec- Digital Printer trode of the Developer.
4.2.11 Ghost (3) • Description White ghost occurs in the black image printing at 32mm intervals. Digital Printer Digital Printer 1. The life of the developer may be expired. Digital Printer Digital Printer 2. The abnormal voltage and bad contact of Digital Printer the terminal of the supply roller Digital Printer...
TROUBLESHOOTING 4.2.14 Satins on Back of Page • Description The back of the page is stained at 47 mm intervals. Digital 1. Transfer roller is contaminated. Digital Pri Digital Printer Digital Printer 2. Pressure roller is contaminated. Digital Printer 4.2.15 Blank Page Print out (1) •...
4.3 bad discharge 4.3.1 Wrong Print Position • Description Printing begins at wrong position on the paper. Check and Cause Wrong sense time caused by defective feed sensor actuator. 4.3.2 JAM 0 L S U Fuser Toner Cartridge EXIT Sensor Feed Sensor Empty Sensor...
TROUBLESHOOTING 4.3.3 JAM 1 L S U Fuser EXIT Sensor Empty Sensor Check and Cause 1. If the recording paper is jammed in front of or inside the fuser. (Perform DCU diagnostic code 08) 2. If the recording paper is stuck in the discharge roller and the fuser just after passing through the Actuator- Feed, Feed Actuator may be defective.
4.3.5 Multi-Feeding • Description Multiple sheets of paper are fed at once. Check and Cause 1. Solenoid malfunction(the solenoid does not work properly): Perform DCU Diagnostic Code 06. 2. Pad-Friction is contaminated with foreign matter.(oil...) 3. The face of paper is blended. 4.3.6 Paper rolled in the Fuser •...
TROUBLESHOOTING 4.3.7 Paper rolled in the Toner Cartridge (OPC Drum) • Description Paper is rolled up in the OPC. Check and Cause 1. Paper is too much thin. 2. The face of paper is curled. Service Manual 4-16 Solution 1. Recommend to use normal paper. 2.
4.4 Malfunction 4.4.1 All LEDs blinking (Fuser Error) 1. All the lamps on the operator panel blink. • Description 2. Gear of the fuser does not work and breaks away melt away. When printing, motor breaks away from its place due to defective fuser gear. Check and Cause 1.
TROUBLESHOOTING 4.4.3 Not function of the gear of the fuser due to melting away • Description The motor breaks away from its place due to gear melting away. Check and Cause DCU Mode : Check if the Error States '60' '62' '68' occur. Check the operation of Fuser Erasing Lamp On/Off with the Error Code Check -10-.
4.4.6 Cover Open • Description The ERROR lamp is on even when the print cover is closed. Check and Cause 1. The Hook Lever in the top cover may be defective. 2. Check the connector (Engine B’d HVPS) and circuit of the cover switch department in the Main Control board.
TROUBLESHOOTING 4.4.8 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 1. Motor harness or sub PCB may be defective. 2. Perform DCU diagnostic code 00 and Check the motor operation.
4.4.10 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 DCU Mode : LSU Check -05- LSU Motor on.
TROUBLESHOOTING 4.5 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. 4.5.1 Precautions on Safe-keeping of Toner Cartridge Excessive exposure to direct light more than a few minutes may cause damage to the cartridge.
4.5.4 Signs and Measures at Poor toner cartridge Fault Signs Light image and • The printed image partially blank is light or unclean image and untidy. (The life is ended.) • Some part of the image is not print- Digital Printer Digital Printer Digital Printer •...
TROUBLESHOOTING Fault Signs White Black spot • Light or dark black dots on the image occur periodically. Digital Printer Digital Printer • White spots occur Digital Printer in the image period- ically. Digital Printer Digital Printer Recycled product • Poor appearance of the developer.
4.6 Bad Environment of The Software 4.6.1 The printer is not working (1) • Description While Power turned on, the printer is not working in the printing mode. Check and Cause 1. Run Self-Test Mode : Turn the power on while pressing the test printing button for 2 or 3 seconds before printing works.
TROUBLESHOOTING 4.6.2 The printer is not working (2) After receiving the printing order, no response at all or the low speed of printing • Description occurs due to wrong setup of the environment rather than malfunction of the printer itself. Check and Cause 1.
4.6.3 Abnormal Printing The printing is not working properly even when the cable has no problem. (even after the cable is replaced) • Description If the printer won't work at all or the strange fonts are repeated, the printer driver may be defec- tive or wrong setup in the CMOS Setup.
TROUBLESHOOTING 4.6.4 SPOOL Error To spool which stands for "simultaneous peripheral operations online" a computer document or task list (or "job") is to read it in and store it, usually on a hard disk or larger storage medium so • Description that it can be printed or otherwise processed at a more convenient time (for example, when a printer is finished printing its current document).
EXPLODED VIEWS AND PARTS LIST 5.1 Main Assembly Exploded view Service Manual...
SPRING-KEY KEY-ON LINE SCREW-TIPTITE PLATE-P-CHANNEL CBF HARNESS-MOTOR FAN-DC UNIT-LSU PBA MAIN-PANEL COVER PCB-M-PCB CBF HARNESS-LSU 1400 ELA HOU-RX DRIVE 1400 MEA UNIT-COVER FRONT, XEROX MEA UNIT-COVER FRONT, XEROX 11-1 COVER-FRONT 11-2 ADJUST-MANUAL L 11-3 ADJUST RACK-MANUAL 11-4 GEAR-RACK_PINION 11-5 ADJUST-MANUAL R...
EXPLODED VIEWS AND PARTS LIST 5.2 Frame Assembly Exploded view Service Manual...
< Frame Assembly Parts List > DESCRIPTION ELA UNIT-FRAME ASSY FRAME-Base GUIDE-TR PLATE-SAW GUIDE-TR RIB GEAR-EXIT F/DOWN MEC-BEARING,EXIT ROLLER-EXIT_F/DOWN SPRING-EXIT_F/DOWN PMO-GEAR_EXIT_DRV16 HOLDER-EXIT_F/DOWN PMO-ROLLER_EXIT,MAIN PMO-ROLLER_EXIT,FR MEC-TERMINAL IPR-TERMINAL CON IPR-TERMINAL CR HOUSING-TERMINAL PMO-LOCKER CST PMO-ACTUATOR CVR OPEN PMO-PLATE GUIDE DEVE_R SPRING-GUIDE DEVE IPR-GROUND_ROLLER IDLE PMO-PLATE GUIDE DEVE_L PMO-ACTUATOR FEED...
EXPLODED VIEWS AND PARTS LIST < Frame Assembly Parts List Cont. > DESCRIPTION SHAFT-FEED IDLE BUSH-FEED IDLE SPRING-FEED IDLE IPR-P_GROUND_DRIVE2 SPRING-CAM PICK-UP CAM-PICK_UP IPR-GROUND DRIVE SOLENOID-HB (PICK-UP) SOLENOID-HB (MANUAL) 49-1 PMO-GEAR PICK_UP B 49-2 PMO-GEAR PICK_UP A 49-3 SPRING-PICK_UP GEAR BRACKET-FEED IPR-GROUND TR SHAPT-FEED...
5.3 Driver Unit Exploded view < Driver Unit Parts List > DESCRIPTION ELA HOU-RX DRIVE 1400 BRACKET-GEAR 1400 GEAR-FUSER DRV GEAR-RDCN Z132/19 GEAR-PICK_UP DRV RING-E BRACKET-MOTOR 1400 GEAR-RDCN Z7128 GEAR-RDCN Z7322 MOTOR STEP-7.5 EXPLODED VIEWS AND PARTS LIST SEC CODE Q’TY JC96-02733A JC61-00598A...
EXPLODED VIEWS AND PARTS LIST 5.4 Fuser Unit Exploded view Service Manual...
< Fuser Unit Parts List > DESCRIPTION ELA HOU-FUSER 110V ELA HOU-FUSER 220V COVER-FUSER HOLDER-PLATE CLAW SPRING ETC-CLAW PMO-ROLLER EXIT SPRING-EXIT F_UP THERMOSTAT-150 PMO-GEAR_EXIT_DRV16 GEAR-IDLE 23 RING-CS GEAR-RDCN 2515 IPR-ELECTRODE_LAMP ELECTRODE-WIRE_L THERMISTER-NTC HF ELECTRODE-WIRE_R CBF HARNESS-FUSER(110V) CBF HARNESS-FUSER(220V) GEAR-FUSER,Z37 BUSH-HR_L NPR-ROLLER_HEAT BUSH-HR_R LAMP-HALOGEN(110V)
EXPLODED VIEWS AND PARTS LIST 5.5 Cassette Unit Exploded view Service Manual 5-10...
< Cassette Unit Parts List > DESCRIPTION CASSETTE FRAME-CASSETTE PMO-EXTENSION LARGE PMO-EXTENSION SMALL PLATE-KNOCK_UP SPRING-KNOCK_UP HOLDER-PAD SPRING-FRICTION PAD ROLLER-IDLE FEED SPRING-FEED PMO-PLATE_LOCKER SPRING-LOCKER ADJUST-CASSETTE_L ADJUST-CASSETTE_R GEAR-PINION INDICATOR-LEVER INDICATOR RPR-FRICTION PAD IPR-PLATE PAD RPR-PAD CASSETTE EXPLODED VIEWS AND PARTS LIST SEC CODE Q’TY JC97-01750A JC61-00578A...
7. Connection Diagram 7.1 Phaser 3130 IEEE1284 COMOPATIABLE CABLE HOST COMPUTER THERMISTOR MOTOR 38 PIN 6 PIN CN11 USB CABLE CN14 CONNECTOR for USB CN12 PCL MAIN BOARD FR-4, 4LAYER THER 1 THER 2 CN10 CN13 +3.3V DCU_DATA DCU_CLK CONNECTION DIAGRAM LSUCLK POLYGON nLREADY...
CONNECTION DIAGRAM 7.2 Phaser 3120 HOST USB CABLE COMPUTER THE RM THERMISTOR THE RM2 MOTOR +3.3V D CU _D ATA D CU _ C LK Service Manual LSUCLK nLREADY nPMOTOR 4PIN CONN-E CTOR 24VS *HSYNC nLD_ON +3.3V +24V MP_CLUTCH +24V...