Samsung ML-1700 manual

SERVICE LASER PRINTER ML-1700 Series ML-1710 ML-1750 Manual LASER PRINTER CONTENTS 1. Precautions 2. Reference Information 3. Specifications 4. Summary of product 5. Disassembly and Reassembly 6. Alignment and Adjustments 7. T roubleshooting 8. Exploded Views and Parts List 9. Block Diagram 10. Connection Diagram[...]

© Samsung Electronics Co.,Ltd. February 2003 Printed in Korea. VERSION NO. : 1.00 CODE : JC-0093A This service manual is also provided on the web, the ITSELF system f Samsung Electronics Co., Ltd. http://itself.sec.samsung.co.kr ELECTRONICS[...]

2003. 02[...]

1 1 1-1 Samsung Electronics Precautions Service Manual 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 W arning for safety . (1) Request the service by qu[...]

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

1-3 Samsung Electronics Precautions Service 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 [...]

1-4 Precautions Samsung Electronics Service Manual 1.3 ESD Precautions Certain semiconductor devices can be easily damaged by static electricity . Such components are commonly called “Electrostatically Sensitive (ES) Devices”, or ESDs. Examples of typical ESDs are: integrated circuits, some field effect transistors, and semiconductor “chip”[...]

2 2 2-1 Samsung Electronics REFERENCE INFORMA TION Service Manual 2. Reference Information This chapter describes the reference information for applying this training manual, and it is consist- ed of the tool list, the abbreviation table, the outline of model, and so on. 2.1 T ool for T roubleshooting The following tools are recommended for safe an[...]

2-2 REFERENCE INFORMA TION Samsung Electronics Service Manual 2.2 Acronyms and Abbreviations The table in the below explains abbreviations used in this service manual. The contents of this service manual are declared with abbreviations in many parts. Please refer to the table. AC Alternating Current ASIC Application Specific Integrated Circuit ASSY[...]

2-3 Samsung Electronics REFERENCE INFORMA TION Service Manual 2.3 The Sample Pattern for the T est The sample pattern shown in below is the standard pattern used in a factory . The contents of the life span and the printing speed are measured with the pattern shown in below . (The picture in the manual is 70% size of the actual A4 size.) 2.3.1 A4 5[...]

2-4 REFERENCE INFORMA TION Samsung Electronics Service Manual 2.3.2 A4 2% Pattern[...]

2-5 Samsung Electronics REFERENCE INFORMA TION Service Manual 2.3.3 A4 IDC Pattern[...]

2-6 REFERENCE INFORMA TION Samsung Electronics Service Manual[...]

3 3 3-1 Samsung Electronics Specifications Service Manual 3. Specifications Product specifications are subject to change without notice.See below for product specifications. 3.1 General Specifications ITEM DESCRIPTION Print T echnology Non-impact Electro-photograpic Printing Developing system Non-Magnetic, Mono-Component Developing System Print Spe[...]

3-2 Specifications Samsung Electronics Service Manual 3.3 Electrical Specification 3.2 Controller Specification ITEM DESCRIPTION ML-1710 ML-1750 Processor(CPU) Samsung Jupiter4 90MHz Samsung SPGPm 166MHz OS Compatibility (1) Win 98x/ME/2000/XP , Win 9x/NT4.0/ME/2000/XP V arious Linux OS,Mac (Mac OS 8.6 ↑ ) V arious Linux OS,Mac (Mac OS 8.6 ↑ ) [...]

3-3 Samsung Electronics Specifications Service Manual • Input capacity Cassette: 250 sheets Manual : 1 sheet • Output capacity Face Down : 50 sheets(20lb) Face Up : 1 sheet(OHP , Lavbel, Cut Sheet, Envelope) 2-Paper Handling Specifications Please refer to " Paper Specifications " on user guide • Input Paper Size 3.5 T ONER Cartridge[...]

3-4 Specifications Samsung Electronics Service Manual[...]

4 4 4-1 Samsung Electronics SUMMAR Y O F P R ODUCT Service Manual 4. Summary of Product This chapter describes the functions and operating principal of the main component. 4.1 Printer Components 4.1.1 Front View Output Support T op output tray (Face down) Control Panel Power switch Paper level indicator T ray Manual Feeder Manual Feeder guide Front[...]

4-2 SUMMAR Y O F P R ODUCT Samsung Electronics Service Manual 4.1.2 Rear View Rear output tray (Face up) Power receptacle Parallel port (ML-1750 Only) USB port 4.1.3 Inside View T oner cartridge Front Cover[...]

LED Description 4-3 Samsung Electronics SUMMAR Y O F P R ODUCT Service Manual 4.1.3 Control Panel 1) On Line/Error and T oner Save LEDs If the On Line/Error lights green, the printer is ready to print. If the On Line/Error lights red, the printer is experiencing an error , such as jammed paper , the open cover or the empty toner cartridge. If you p[...]

4-4 SUMMAR Y O F P R ODUCT Samsung Electronics Service Manual 2) Cancel button Printing demo page In Ready mode, press and hold this button for about 2 seconds until all LEDs blink slowly , and release. Printing configuration sheet In Ready mode, press and hold this button for about 6 seconds until all LEDs blink fast, and release. Manual feeding P[...]

4-5 Samsung Electronics SUMMAR Y O F P R ODUCT Service Manual 4.2 System Layout PTL P I C K / R PR CR DR SR TR FR OPC L S U Fuser T oner Car tridge 1 1 2 2 3 6 3 4 Cassette Manual Feeder T ransfer Roller PTL(Per-T ramsfer-Lamp) 5 7 6 7 5 Fuser LSU(Laser Scan Unit) T oner Cartridge 4 MP Sensor[...]

4-6 SUMMAR Y O F P R ODUCT Samsung Electronics Service Manual 4.2.1 Feeding Part There are the universal cassette, which loads papers, and the manual feeder , which supplies paper one by one. The cassette has the function pad which separates paper one by one, and it has the sensor function to check the existence of the loading paper . - Feeding Met[...]

4-7 Samsung Electronics SUMMAR Y O F P R ODUCT Service Manual 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 of f the power • Safety device - The pow[...]

4-8 SUMMAR Y O F P R ODUCT Samsung Electronics Service Manual 4.2.6 T oner Cartridge By using the electronic photo process, it creates a visual image. In the toner cartridge, the OPC unit and the developer unit are in a body . The OPC unit has OPC drum and charging roller , and the developer unit has toner , toner cartridge, supply roller , develop[...]

4-9 Samsung Electronics SUMMAR Y O F P R ODUCT Service Manual 4.3 Main PBA(SPL Model) The Engine Board and the Controller Board are in one united board, and it is consisted of CPU part and print part in functional aspect. The CPU is functioned as the bus control, I/O handling, drivers, and PC inter- face. The main board sends the Current Image dlml[...]

4-10 SUMMAR Y O F P R ODUCT Samsung Electronics Service Manual 4.3.1 ASIC (Jupiter IV) The Jupiter IV (16Bit RISC Processor), which is the executive controller to operate the printer function, is in use, and the each operation block is driven by system program of the flash memory . The whole system is controlled by driving operation block. •Main [...]

4-11 Samsung Electronics SUMMAR Y O F P R ODUCT Service Manual 3) Paper Feeding, T oner Cartridge Sensing When paper passes the actuator (feed sensor part), it detects the signal of Photo interrupter , informs the paper feeding state to CPU, and then sprays the image data after certain time. If it doesn't detect the feed sensor within 1 sec. a[...]

4-12 SUMMAR Y O F P R ODUCT Samsung Electronics Service Manual 4.4 Main PBA (PCL Model) CPU(SPGPm) SCHMITT INVER T IC-VOL T AGE COMP BUFFER SDRAM FONT ROM REGULA TOR CLOCK GENERA TOR MOTOR DRIVE IC VIDEO CLK 14.7456MHz USB CLK 30MHz IC-USC RC-NETWORK IC-LINE TRANSCEVIER MAIN CLK 12MHz FLASH MEMORY[...]

4-13 Samsung Electronics SUMMAR Y O F P R ODUCT Service Manual U6 U8 CN2 U27 CN3 CN4 U7 OSC2 U3 U20 U1 1 U10 U24 U13 CN13 CN8 OSC4 U26 U17 U18 CN10 CN9 CN1 1 CN12 CN6 U13 OSC5 U25 U14 U15 U1 ML-1710 (ML-1510) ML-1750 Processor Samsung Jupiter4 90MHz Samsung SPGPm 166MHz PC Interface USB 1.1 USB 2.0 USB USB/IEEE1284 (Parallel) Emulation SPL SPL, PCL[...]

4-14 SUMMAR Y O F P R ODUCT Samsung Electronics Service Manual 4.4.1 Asic(SPGPm) 1) ARM946ES - 32-bit RISC embedded processor core - 16KB instruction cache and 16KB data cache - No T ightly Coupled Memory - Memory Protection Unit & CP15 control program 2) Dual bus architecture for bus traffic distribution - AMBA High performance Bus (AHB) - Sys[...]

4-15 Samsung Electronics SUMMAR Y O F P R ODUCT Service Manual 4.4.4 SPGPm Internal Block Diagram AHB BUS SFR BUS INTERF ACE SYSTEM BUS INTERF ACE P ARALLEL POR T INTERF ACE UART(3CH) SDRAM CONTROLLER (5CH) HCT ROT A TOR/ SCALER/ HALFTONER 1024x8, 256x8x 4 gCODEC GRAPHIC EXECUTION UNIT MISC CONTROLLER ARM946E - S CORE 16KB ICACHE 16KB DCACHE CLOCK [...]

4-16 SUMMAR Y O F P R ODUCT Samsung Electronics Service Manual 4.5 SMPS & HVPS The SMPS supplies the DC power to the system. It takes 1 10V/220V and outputs the +3.3V , +5V 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 t[...]

4-17 Samsung Electronics SUMMAR Y O F P R ODUCT Service Manual 4.5.1 HVPS(High V oltage Power Supply) 1) T ransfer High V oltage (THV+) - Function: It is a voltage to transfer a toner developed on OPC drum to a paper . - Output voltage: Maximum +5.0KV ± 5% (Duty changeable, unload) - 1.0KV ± 15%(When cleaning, 200MOhm) - Error: If THV (+) doesn&a[...]

4-18 SUMMAR Y O F P R ODUCT Samsung Electronics T raining Manual 4.5.2 SMPS(Switching Mode Power Supply) It is the power source for the whole system. It is an independent module, so it is possible to use for com- mon 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, an[...]

4-19 Samsung Electronics SUMMAR Y O F P R ODUCT Service Manual 6) Feature - Insulating resistance : over 50M Ω (at DC500V) - Insulating revisiting pressure : Must be no problem within 1min. (at 1500Vzc, 10mA) - Leaking voltage : under 3.5mA - Running voltage : under 40A peak (at 25 ° c, Cold start) Under 60A peak (in other conditions) - Rising T[...]

4-20 SUMMAR Y O F P R ODUCT Samsung Electronics Service Manual 4.6 Engine F/W 4.6.1 Feeding If feeding from a cassette, the drive of the pickup roller is controlled by controlling the solenoid. The on/of f of the solenoid is controlled by controlling the general output port or the external output port. If feeding from a manual feeder , decide to in[...]

4-21 Samsung Electronics SUMMAR Y O F P R ODUCT Service Manual 4.6.4 Fusing The temperature change of the heat roller ’ s surface is changed to the resistance value through the thermis- tor . By converting the voltage value, which impressed to the resistance, to the digital value through the AD converter , the temperature is decided. The AC power[...]

4-22 SUMMAR Y O F P R ODUCT Samsung Electronics Service Manual 4.6.4.3 What is the Q-PID Method? The Q-PID is developed by Samsung, and it saves the preheating time in half in comparison with the existed method. It saves not only the printing time for initial print but also it saves the printing speed for the reat- tempting print after for a while.[...]

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

5-2 Disassembly and Reassembly Samsung Electronics Service Manual 1. Pull the Cassette out of the printer . 2. Remove the Front Cover in the direction of arrow . 3. Remove four screws. 4. Unlatch the front ends of the T op Cover . 5. Remove the T op Cover in the direction of arrow . 6. Remove the Rear Cover from the T op Cover . Cassette T op Cover[...]

5-3 Samsung Electronics Disassembly and Reassembly Service Manual 1. Before you remove the Fuser , you should remove: - T op Cover(see page 5-2) 2. Unplug two connectors(Block) from the boards, then remove four screws. 3. Remove two screws and take the Thermostat out of the Fuser . 4. Remove two screws and take the Halogen Lamp out of the Heat Roll[...]

5-4 Disassembly and Reassembly Samsung Electronics Service Manual 5.3.2 Fuser(Q-PID T ype) 1. Before you remove the Fuser , you should remove: - T op Cover(see page 5-2) 2. Unplug two connectors(Block) from the boards, then remove four screws. 3. Remove two screws and take the Thermostat out of the Fuser . 4. Remove two screws. 5. Remove one screw [...]

5-5 Samsung Electronics Disassembly and Reassembly Service Manual 6. Separate Heat Roller Ass'y after remove six screws and after removing 6 screws as shown in below , take out the heat roller assembly in direction of the arrow while pulling the both side of the unit-brush Caution : • Be careful not to damage or contaminate the sur- face of [...]

5-6 Disassembly and Reassembly Samsung Electronics Service Manual 1. Before you remove the Fuser , you should remove: - T op Cover(see page 5-2) 2.Remove the Exit Gear , Bearing and Exit Roller as shown below Exit Gear Bearing Exit Roller 1 2 5.4 Exit Roller 5.5 LSU 1. Before you remove the Fuser , you should remove: - T op Cover(see page 5-2) 2. R[...]

5-7 Samsung Electronics Disassembly and Reassembly Service Manual 1. Before you remove the Fuser , you should remove: - T op Cover(see page 5-2) 2. Unplug the connector from the SMPS and remove the one screw . Then take out the Fan. DC F an 5.6 Fan 5.7 Driver Ass’y 1. Before you remove the Fuser , you should remove: - T op Cover(see page 5-2) 2. [...]

5-8 Disassembly and Reassembly Samsung Electronics Service Manual 1. Before you remove the Fuser , you should remove: - T op Cover(see page 5-2) - Fuser Connector(see page 5-3) 2. Remove the fourteen screws securing from the Engine Shield Ass ’ y and unplug the all connec- tors. Then take the Engine Shield Ass ’ y. Engine Shield Ass'y 5.8 [...]

5-9 Samsung Electronics Disassembly and Reassembly Service Manual 5.10 SMPS 1. Before you remove the Fuser , you should remove: - T op Cover(see page 5-2) - Engine Shield Ass ’ y(see page 5-8) 2. Unplug one connector and remove three screws then take the Inlet Ass ’ y out. 3. Remove one screw and unplug one connector from the Main PBA. 4. Remov[...]

5-10 Disassembly and Reassembly Samsung Electronics Service Manual 5.1 1 T ransfer Roller 1. Before you remove the Fuser , you should remove: - T op Cover(see page 5-2) - LSU(see page 5-6) 2. Remove three screws and take the T ransfer Earth out. 3. Unplug the PTL Holder Connector , then remove the PTL Holder and PTL Lens, as shown below . 4. Unlatc[...]

5-11 Samsung Electronics Disassembly and Reassembly Service Manual 5.12 Feed Roller 1. Before you remove the Fuser , you should remove: - T op Cover(see page 5-2) - Drive Ass ’ y(see page 5-7) 2. Remove two screws from the Guide Paper and take it out. 3. Pull up the Feed Idle Bush and Feed Idle Shaft, as shown below . 4. Remove three screws from [...]

5-12 Disassembly and Reassembly Samsung Electronics Service Manual 1. Before you remove the Fuser , you should remove: - T op Cover(see page 5-2) - Drive Ass ’ y(see page 5-7) - Engine Shield Ass ’ y(see page 5-8) 2. Remove three screws from the Feed Bracket and take it out. 3. Remove the Pick up Gear Ass ’ y , as shown below . 4. Remove the [...]

6 6 6-1 Samsung Electronics ALIGNMENT & ADJUSTMENTS Service Manual 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. 6.1 How to use DC[...]

6-2 ALIGNMENT & ADJUSTMENTS Samsung Electronics Service Manual 6.1.2 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 2) Error Code When detecting the malfunction, the prin[...]

6-3 Samsung Electronics ALIGNMENT & ADJUSTMENTS Service Manual 6.1.3 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. T o enter the self-test mode, turn the power on pressing the buttons [...]

6-4 ALIGNMENT & ADJUSTMENTS Samsung Electronics Service Manual Code Description 07 Paper Empty Sensor T est : If activate the Actuator of the PEMPTY Sensor , the left and right of the three LEDs are on. Paper Empty Sensor ON/OFF 1st LED ON/OFF 08 Feed & Exit Sensor T est T est the Feed sensor and Discharge sensor in the same way as '07[...]

6-5 Samsung Electronics ALIGNMENT & ADJUSTMENTS Service Manual 6.1.4 Self T est Button If the Self-T est button pressed, vertical lines are printed. T urn the power on while pressing this button, '89' shows in the DCU and the printer is warming up. After warming-up the printer is in READY Mode, and '88' shows in the DCU. In [...]

6-6 ALIGNMENT & ADJUSTMENTS Samsung Electronics Service Manual 6.2 Paper Path PTL P I C K / R PR CR DR SR TR FR OPC L S U Fuser T oner Car tridge 1 1 2 2 3 3 4 4 Paper Input (Cassette) Paper Input (Manual Feeder) Paper Out(Face Down) Paper Out(Face Up) 5 5 6 6 7 7 Paper Empty Sensor Paper Feeding Sensor Paper Exit Sensor Feed Sensor MP Sensor P[...]

6-7 Samsung Electronics ALIGNMENT & ADJUSTMENTS Service Manual 6.3 Clearing Paper Jams Occasionally , paper can be jammed during a print job. Some of 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 that does no[...]

6-8 ALIGNMENT & ADJUSTMENTS Samsung Electronics Service Manual 6.3.2 In the Paper Feed Area 1) Open the front cover and remove the toner cartridge 2) Gently pull the paper toward you. 3) Check that there is no other paper in the printer . 4) Reinstall the toner cartridge, and then close the cover . Printing can be resumed. 1) Slide out the tray[...]

6-9 Samsung Electronics ALIGNMENT & ADJUSTMENTS Service Manual 6.3.4 T ips for A voiding Paper Jams By selecting the correct paper types, most paper jams can be avoided. If a paper jam occurs, follow the steps outlined in • Ensure that the adjustable guides are positioned correctly . • Do not overload the tray . Ensure that the paper is bel[...]

6-10 ALIGNMENT & ADJUSTMENTS Samsung Electronics Service Manual 6.4 Sample Pattern This product has the several sample patterns for maintenance. With the sample patterns, check the exis- tence of the abnormality . The patterns help to regularly maintain the product. 6.4.1 Printing a Demo Page Print a demo page or a configuration sheet to make s[...]

6-11 Samsung Electronics ALIGNMENT & ADJUSTMENTS Service Manual 6.4.2 Printing a cleaning sheet If you are experiencing blurred, faded or smeared printouts. Printing a cleaning sheet cleans the drum inside the toner cartridge. This process will produce a page with toner debris, which should be discarded. 1) Ensure that the printer is turned on [...]

6-12 ALIGNMENT & ADJUSTMENTS Samsung Electronics Service Manual COMPONENT REPLACEMENT CYCLE Pick-up Roller 60,000 Pages Paepr Feeding Roller(Friction Pad) 60,000 Pages T ransfer Roller 60,000 Pages Fuser 60,000 Pages T oner Cartridge 3,000 Pages 6.5 Consumables and Replacement Parts The cycle period outlined below is a general guideline for mai[...]

6-13 Samsung Electronics ALIGNMENT & ADJUSTMENTS Service Manual 6.7 Periodic Defective Image If the delinquent image regularly occurs in the printed-paper , it is due to delinquent or damaged roller . Refer to the table in below and check the condition of the roller . No Roller Defective image T ypical defect 1 OPC Drum 75.5mm white spot on bla[...]

6-14 ALIGNMENT & ADJUSTMENTS Samsung Electronics Service Manual[...]

7 7 7-1 Samsung Electronics T R OUBLESHOO TING Service Manual 7. T roubleshooting 7.1 Bad image 7.1.1 V ertical Black Line and Band • Description 1. Straight thin black vertical line occurs in the printing. 2. Dark black vertical band occur in the printing. Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Check and [...]

7-2 T R OUBLESHOO TING Samsung Electronics Service Manual 7.1.3 Horizontal Black Band • Description 1. Dark or blurry horizontal stripes occur in the printing periodically . (They may not occur periodically .) Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Check and Cause Solution 1. Bad contacts of the voltage te[...]

7-3 Samsung Electronics T R OUBLESHOO TING Service Manual 7.1.5 Light Image • Description The printed image is light, with no ghost. Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Check and Cause Solution 1. Develop roller is stained when the toner of developer cartridge is almost con- sumed. 2. Ambient temperatur[...]

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

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

7-6 T R OUBLESHOO TING Samsung Electronics Service Manual 7.1.1 1 Ghost (3) • Description White ghost occurs in the black image printing at 32mm intervals. Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer 37mm Check and Cause Solution 1. The life of the developer may be expired. 2. The abnormal volta[...]

7-7 Samsung Electronics T R OUBLESHOO TING Service Manual 7.1.14 Satins on Back of Page • Description The back of the page is stained at 47 mm intervals. Digital Digital Pri Digital Printer Digital Printer Digital Printer Check and Cause Solution 1. T ransfer roller is contaminated. 2. Pressure roller is contaminated. 1. Perform the OPC Cleaning [...]

7-8 T R OUBLESHOO TING Samsung Electronics Service Manual 7.2.1 Wrong Print Position • Description Printing begins at wrong position on the paper . Check and Cause Solution Wrong sense time caused by defective feed sensor actuator . Replace the defective actuator Check and Cause Solution 1. Check the Solenoid by using DCU diagnostic mode 06. 2. C[...]

7-9 Samsung Electronics T R OUBLESHOO TING Service Manual Check and Cause Solution 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. 1. Replace t[...]

7-10 T R OUBLESHOO TING Samsung Electronics Service Manual 7.2.5 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 DCU Diagnostic Code 06. 2. Pad-Friction is contaminated with foreign matter .(oil...) 3. The face of paper is blended.[...]

7-11 Samsung Electronics T R OUBLESHOO TING Service Manual 7.2.7 Paper rolled in the T oner Cartridge (OPC Drum) • Description Paper is rolled up in the OPC. Check and Cause Solution 1. Paper is too much thin. 2. The face of paper is curled. 1. Recommend to use normal paper . 2. How to remove the rolled in the OPC Drum. • Remove the paper while[...]

7-12 T R OUBLESHOO TING Samsung Electronics Service Manual 7.3 Malfunction 7.3.1 All LEDs blinking (Fuser Error) • Description 1. All the lamps on the operator panel blink. 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 Solution 1. Check [...]

7-13 Samsung Electronics T R OUBLESHOO TING Service Manual 7.3.3 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 Solution DCU Mode : Check if the Error States '60' '62' '68' occur . Check the operation of Fuser Era[...]

7-14 T R OUBLESHOO TING Samsung Electronics Service Manual 7.3.6 Cover Open • Description The ERROR lamp is on even when the print cover is closed. Check and Cause Solution 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. Perfo[...]

7-15 Samsung Electronics T R OUBLESHOO TING Service Manual 7.3.8 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. 2. Perform DCU diagnostic code 00 and Check the motor opera[...]

7-16 T R OUBLESHOO TING Samsung Electronics Service Manual 7.3.10 V ertical Line Getting Curved • Description When printing, vertical line gets curved. Check and Cause Solution 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. 1. Replace LSU. 2. Replace the Main[...]

7-17 Samsung Electronics T R OUBLESHOO TING Service Manual 7.4 T oner 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. 7.4.1 Precautions on Safe-keeping of T oner Cartridge Excessive exposure to direct[...]

7-18 T R OUBLESHOO TING Samsung Electronics Service Manual 7.4.4 Signs and Measures at Poor toner cartridge Fault Signs Cause & Check Solution Light image and partially blank image (The life is ended.) T oner Contamination • The printed image is light or unclean and untidy . • Some part of the image is not print- ed. • Periodically a nois[...]

7-19 Samsung Electronics T R OUBLESHOO TING Service Manual Fault Signs Cause & Check Solution White Black spot Recycled product • Light or dark black dots on the image occur periodically . • White spots occur in the image period- ically . • Poor appearance of the developer . • Unclean and rough printouts. • Bad background in the image[...]

7-20 T R OUBLESHOO TING Samsung Electronics Service Manual 7.5 Bad Environment of The Software 7.5.1 The printer is not working (1) • Description While Power turned on, the printer is not working in the printing mode. Check and Cause Solution 1. Run Self-T est Mode : T urn the power on while pressing the test printing button for 2 or 3 seconds be[...]

7-21 Samsung Electronics T R OUBLESHOO TING Service Manual 7.5.2 The printer is not working (2) • Description After receiving the printing order , no response at all or the low speed of printing occurs due to wrong setup of the environment rather than malfunction of the printer itself. Check and Cause Solution 1. Secure more space of the hard dis[...]

7-22 T R OUBLESHOO TING Samsung Electronics Service Manual 7.5.3 Abnormal Printing • Description The printing is not working properly even when the cable has no problem. (even after the cable is replaced) 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 Setu[...]

7-23 Samsung Electronics T R OUBLESHOO TING Service Manual 7.5.4 SPOOL Error • Description T o 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 that it can be printed or otherwise proc[...]

8 8 8-1 Samsung Electronics EXPL ODED VIEW & P A R T S LIST Service Manual 8. Exploded V iews and Parts List 5-1. Main Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page(5-2) 5-2. Frame Unit Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . page(5-4) 5-3. Drive Unit Assembly . . . . . . . . . . . . . . . . [...]

8-2 EXPL ODED VIEW & P A R T S LIST Samsung Electronics Service Manual 8.1 Main Assembly 0 9 6 7 8 2-2 2-3 2-4 2-5 2-6 2-6 15 2-1 2-7 2-8 1 2 10 4 1 1-1 11 1 1-2 1 1-3 1 1-4 1 1-5 1 1-3 12 17 13 14 5 20 19 3 18 16-1 16-3 16-2 16[...]

8-3 Samsung Electronics EXPL ODED VIEW & P A R T S LIST Service Manual No. Description SEC.Code Q’ty SA Remark 0 ML-1710 / ML-1750 1 ELA UNIT -FRAME LOWER, 1 10V JC96-02732A 1 O 1 10V 2 MEA UNIT -COVER T OP JC97-01748A 1 O ML-1710/XAA MEA UNIT -COVER T OP JC97-01749A 1 O ML-1750/XAA MEA UNIT -COVER T OP JC97-01748F 1 O ML-1710/XAX MEA UNIT -C[...]

8-4 EXPL ODED VIEW & P A R T S LIST Samsung Electronics Service Manual 8.2 Frame Unit Assembly 0 1 2 4 3 5 6 7 61 12 6 9 53 9 51 13 14 15 16 17 57 18 19 20 20 21 22 23 24 25 26 37 31 27 28 29 29 30 58 58-1 58-2 58-3 58-4 58-5 58-6 58-6 58-4 40 41 56 42 44 53 45 46 47 48 59 59-1 59-2 59-3 59-4 50 52 52 54 55 11 10 8 35 36 Transfer Roller 38 60 3[...]

8-5 Samsung Electronics EXPL ODED VIEW & P A R T S LIST Service Manual No. Description SEC.Code Q’ty SA Remark 0 ELA UNIT -FRAME LOWER, 1 10V JC96-02732A 1 O 1 10V 1 FRAME-M-BASE * 1 X 2 GUIDE-P-TR JC61-00607A 1 O 3 PLA TE-P-SA W JC61-00604A 1 O 4 GUIDE-M-TR RIB JC61-00594A 1 O 5 GEAR-EXIT F/DOWN * 1 X 6 MEC-BEARING,EXIT * 2 X 7 ROLLER-EXIT F[...]

8-6 EXPL ODED VIEW & P A R T S LIST Samsung Electronics Service Manual Frame Unit Assembly Parts List(Cont.) SA : Service A vailable O : Service available X : Service not available No. Description SEC.Code Q’ty SA Remark 49 AS-GEAR PICK_UP JC81-01692A 1 O 49-1 PMO-GEAR PICK_UP B JC72-00980A 1 O 49-2 PMO-GEAR PICK_UP A JC72-00979A 1 O 49-3 SPR[...]

8-7 Samsung Electronics EXPL ODED VIEW & P A R T S LIST Service Manual 8.3 Drive Unit Assembly 0 1 2 3 4 4 5 6 7 8 9 HARNESS-MOTOR 5 No. Description SEC.Code Q’ty SA Remark 0 ELA UNIT -RX DRIVE JC96-02733A 1 O 1 BRACKET -P-GEAR 1400 * 1 X 2 GEAR-RDCN 53/26 * 1 X 3 GEAR-RDCN 1 13/33 * 1 X 4 GEAR-RDCN 57/18 * 2 X 5 RING-E * 2 X 6 BRACKET -P-MOT[...]

8-8 EXPL ODED VIEW & P A R T S LIST Samsung Electronics Service Manual 8.4 Cassette Unit Assembly 0 1 2 3 4 5 5 6 7 8 9 10 11 15 16 18 12 13 14 17[...]

8-9 Samsung Electronics EXPL ODED VIEW & P A R T S LIST Service Manual No. Description SEC.Code Q’ty SA Remark 0 MEA UNIT -CASSETTE, USA JC97-01750A 1 O 1 FRAME-M-CASSETTE * 1X 2 PMO-EXTENSION LARGE JC72-00970A 1 O 3 PMO-EXTENSION SMALL JC72-00971A 1 O 4 PLA TE-P-KNOCK_UP * 1X 5 SPRING-CS * 2X 6 HOLDER-M-P AD * 1X 7 SPRING ETC-EXIT ROLL FD * [...]

8-10 EXPL ODED VIEW & P A R T S LIST Samsung Electronics Service Manual 8.5 Fuser Unit Assembly 0 1 2 3 4 5 32 32 6 33 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 31 22 23 24 25 26 27 30 28 29[...]

8-11 Samsung Electronics EXPL ODED VIEW & P A R T S LIST Service Manual No. Description SEC.Code Q’ty SA Remark O AS-FUSER 1 10V JC81-01689A 1 O 1 10V 1 COVER-M-FUSER * 1X 2 HOLDER-M-PLA TE CLAW * 4X 3 SPRING ETC-CLAW * 4X 4 PMO-ROLLER EXIT * 2X 5 SPRING ETC-FUSER EXIT * 2X 6 THERMOST A T -150 JC47-00005A 1 O 7 PMO-GEAR_EXIT_DR V16 * 1X 8 GEA[...]

8-12 EXPL ODED VIEW & P A R T S LIST Samsung Electronics Service Manual[...]

9 9 9-1 Samsung Electronics B L OCK DIA G R A M Service Manual 9. Block Diagram 9.1 PCL Model POWER CORD IN-LET F. G THERMISTOR T o Controller MAIN MOTOR C-SOLENOID C-SOLENOID-MP IEEE1284 Interface USB2.0 Net2270 Crystal 14.74 MHz Freq. Spread Video Clock VOL T AGE DETECTOR MOTOR DRIVER Power On Reset Controller Block SMPS Block HEA TER-AC +24V +5V[...]

9-2 B L OCK DIA GRAM Samsung Electronics Service Manual 9.2 SPL Model MHVPWM THVPWM F. G EXIT -SENSOR FEED-SENSOR P/EMPTY -SENSOR MP-SENSOR IN-LET - + GND THV -RD BIASPWM THV_EA HEA TER-THERMISTOR +24V +5V +3.3V FA N POWER CORD Crystal 12MHz Main Clock Power On Reset SMPS + Main 26p CPU Jupiter 4 +24V Main Motor C-CLUTCH USB HEA TER-AC SMPS P ART?[...]

1 1 0 0 10-1 Samsung Electronics CONNECTION DIA G R A M Service Manual 10. Connection Diagram 10.1 PCL Model HOST COMPUTER IEEE1284 COMOP A TIABLE CABLE CN5 PCL MAIN BOARD FR-4, 4LA YER 6 PIN CONNECTOR for USB USB CABLE CN14 1 2 1 2 THERMISTOR 1 2 3 4 MOTOR CN8 CN10 CN3 DCU +3 .3 V DC U_ DA TA 1 2 3 4 1 2 3 4 DC U_ CL K GN D 1 2 3 4 5 6 7 8 9 10 11[...]

10-2 CONNECTION DIA GRAM Samsung Electronics Service Manual 10.2 SPL Model TH E R M TH E R M2 1 2 1 2 THERMISTOR MOTOR DCU HOST COMPUTER A A/ 1 2 3 4 1 2 3 4 B B/ CN2 CN7 CN5 CN3 4P IN CO N N- E CT O R fo r US B USB CABLE +3 . 3 V DC U_ DA T A 1 2 3 4 1 2 3 4 DC U _ CL K GN D SPL MAIN BOARD FR-4, 2Layer 1 2 3 4 5 6 LSU POL YGON MOTOR LD DIODE 1 2 1[...]

11-1 Samsung Electronics SCHEMA TIC DIA GRAMS Service Manual 11 1 1. Schematic Diagrams 1 1.1 PCL Main Circuit Diagram (1/7)[...]

11-2 SCHEMA TIC DIA GRAMS Samsung Electronics Service Manual PCL Main Circuit Diagram (2/7)[...]

11-3 Samsung Electronics SCHEMA TIC DIA GRAMS Service Manual PCL Main Circuit Diagram (3/7)[...]

11-4 SCHEMA TIC DIA GRAMS Samsung Electronics Service Manual PCL Main Circuit Diagram (4/7)[...]

11-5 Samsung Electronics SCHEMA TIC DIA GRAMS Service Manual PCL Main Circuit Diagram (5/7)[...]

11-6 SCHEMA TIC DIA GRAMS Samsung Electronics Service Manual PCL Main Circuit Diagram (6/7)[...]

11-7 Samsung Electronics SCHEMA TIC DIA GRAMS Service Manual PCL Main Circuit Diagram (7/7)[...]

11-8 SCHEMA TIC DIA GRAMS Samsung Electronics Service Manual 1 1.2 SPL Main Circuit Diagram (1/5)[...]

11-9 Samsung Electronics SCHEMA TIC DIA GRAMS Service Manual SPL Main Circuit Diagram (2/5)[...]

11-10 SCHEMA TIC DIA GRAMS Samsung Electronics Service Manual SPL Main Circuit Diagram (3/5)[...]

11-11 Samsung Electronics SCHEMA TIC DIA GRAMS Service Manual SPL Main Circuit Diagram (4/5)[...]

11-12 SCHEMA TIC DIA GRAMS Samsung Electronics Service Manual SPL Main Circuit Diagram (5/5)[...]

11-13 Samsung Electronics SCHEMA TIC DIA GRAMS Service Manual 1 1.3 HVPS Circuit Diagram (1/2) R305 MGR1/2W 50M 5V Q201 A708-Y 4 R204 47K D202 D1NL20U TNR201 5N221K THV -PWM ¡ C210 6KV 221 R205 22K IT301 Q302 C2383 6 IT201 IT -01 C303 103 7 THV -EA ¡ D206 6KV R304 1/4W 4.7 ZD301 2.7V C304 3KV 151 1 ¡ D205 6KV R212 1/2W 100K 5 Q301 C945C-Y ¡ C20[...]

11-14 SCHEMA TIC DIA GRAMS Samsung Electronics Service Manual HVPS Circuit Diagram (2/2) D503 D1NL20U 5V R413 1/2W 100K C407 103 C505 104 D402 1N4148 OPC 1 C402 102 R505 10K + C1 13 25V 47uF MHV -PWM ¡ R410 1/2W 560K BIAS-sen R513 1/2W 50K R407 100K ZD401 2.7V 6 ZD402 2.7V R501 47K R408 470 ¡ GND ZD501 2.7V C405 104 R404 10K Q402 C945C-Y 7 D401 1[...]

11-15 Samsung Electronics SCHEMA TIC DIA GRAMS Service Manual 1 1.4 SMPS Circuit Diagram : 1 10V (1/2) U2 PWM CONTROL STR-G6353 Drain Source GND Vin 5 4 3 2 1 +3.3V 1.0A GND 11 9 GND EER2828V 8 3 4 6 1 7 Humming-V1 SMPS circuit diagram OCP/FB NO MARKING RESISTOR 1/8W-J(5%) 250V2A +24VS 2.0A 8 10 GND +5V 0.14A 5 F1 125V 8A R1 1/2W 560K TVR1 10D221K [...]

11-16 SCHEMA TIC DIA GRAMS Samsung Electronics Service Manual SMPS Circuit Diagram : 1 10V (2/2) 24VS 5268-03A CON3 1 2 3 4 13 4 2 3.3V 1 2 3 4 53015-0510 CON4 DGND 1 2 3 4 13 4 2 3.3V Q101 KSC1008-Y D105 1N4003 R1 19 2.2K R120 5.6K R125 100 R126 27K OP104 SG-288 R127 100 R128 27K OP103 KPI-512 TNR101 7D561 R1 15 100 R1 16 27K OP103 KPI-512 R1 17 1[...]