LASER PRINTER ML-1700 Series ML-1710 ML-1750 SERVICE Manual LASER PRINTER 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.
VARNING - OSYNLIG LASERSTR LNING N R DENNA DEL R PPNAD OCH SP RREN R URKOPPLAD. BETRAKTA EJ STR LEN. STR LEN R FARLIG. VARO! - AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALTTIINA N KYM TT M LLE LASER- S TEILYLLE L KATSO S TEESEEN. Service Manual Samsung Electronics...
(13) Do not insert steel or metal piece inside/outside of the machine. Do not put steel or metal piece into a ventilator. An electric shock could be happened. Service Manual Samsung Electronics...
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(7) Be careful not to change the location of small parts such as screws when assembling and disassembling. (8) Do remove dust or foreign matters completely to prevent fire of tracking, short, or etc. (9) After finished repair, check the assembling state whether it is same as before the repair or not. Service Manual Samsung Electronics...
9. Minimize bodily motions when handling unpackaged replacement ESDs. Normal motions, such as the brushing together of clothing fabric and lifting one’s foot from a carpeted floor, can generate static electric- ity sufficient to damage an ESD. Service Manual Samsung Electronics...
DCU(Diagnostic Control Unit) Driver Standard : Test equipment to diagnose the Laser Standard : "-" type, "+" type (M3 long, M3 short, M2 long, printer supplied by Samsung Electronics. M2 short). Tweezers Standard : For general home use, small type.
Read Only Memory graphics device interface Second Cassette Feeder ground SMPS Switching Mode Power Supply Host Based Printing SPGP Samsung Printer Graphic Processor Hard Disk Drive Samsung Printer Language high voltage Spool Simultaneous Peripheral Operation Online HVPS High Voltage Power Supply...
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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% Pattern Service Manual Samsung Electronics...
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R E F E R E N C E I N F O R M AT I O N 2.3.2 A4 2% Pattern Service Manual Samsung Electronics...
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R E F E R E N C E I N F O R M AT I O N 2.3.3 A4 IDC Pattern Service Manual Samsung Electronics...
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R E F E R E N C E I N F O R M AT I O N Service Manual Samsung Electronics...
(A4, 5% character pattern standard) (2) The life span of the consumption parts can be checked by printing the demo page or the system list. (Refer to the 6.3 Receive the service information) Service Manual Samsung Electronics...
Envelopes Up to 90 g/m bond(16 to 24 lb) • Input capacity Cassette: 250 sheets Manual : 1 sheet • Output capacity Face Down : 50 sheets(20lb) Face Up : 1 sheet(OHP, Lavbel, Cut Sheet, Envelope) Service Manual Samsung Electronics...
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Specifications Service Manual Samsung Electronics...
This chapter describes the functions and operating principal of the main component. 4.1 Printer Components 4.1.1 Front View Top output tray (Face down) Control Panel Output Support Front Cover Power switch Manual Feeder guide Manual Feeder Paper level indicator Tray Service Manual Samsung Electronics...
S U M M A RY OF PRO D U C T 4.1.2 Rear View Rear output tray (Face up) Power receptacle Parallel port (ML-1750 Only) USB port 4.1.3 Inside View Toner cartridge Front Cover Service Manual Samsung Electronics...
If you press this button once again, this LED is off and the Toner Save mode is disabled. If the On Line/Error and Toner Save LEDs blink, your system has some problems. To solve the problem. Service Manual Samsung Electronics...
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In Manual Feed mode, you can’t cancel the print job by pressing this button. Toner Save mode on/off In Ready mode, press this button to turn the Toner Save mode on or off. Service Manual Samsung Electronics...
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S U M M A RY OF PRO D U C T 4.2 System Layout L S U Fuser Toner Cartridge MP Sensor Cassette Fuser Manual Feeder LSU(Laser Scan Unit) Transfer Roller Toner Cartridge PTL(Per-Tramsfer-Lamp) Service Manual Samsung Electronics...
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- There are two methods, the existing method which use the Heat Lamp and the Q-PID which is developed by Samsung. 110V : Heat Lamp type Fuser 220V : Heat Lamp type or Q-PID type Fuser 4.2.4.1 Temperature-Intercepting Device (Thermostat)
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/HS YNC signal to arrange the vertical line of the image on the paper. After detecting the /HS YNC signal, the image data is sent to the LSU to arrange the its left margin on the paper. The one side of the polygon mirror is one line for scanning. Service Manual Samsung Electronics...
- Management of disusable toner: Collect the toner by using electric static (Clenerless Type- No disusable toner) - OPC Drum protecting Shutter: None - Classifying device for toner cartridge: ID is classified by interruption of the frame channel. Service Manual Samsung Electronics...
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The signals from the paper feed jam sensor and paper empty sensor are directly inputted to the main board. FLASH MEMORY ASIC SDRAM BUFFER VIDEO CLK 14.7456MHz Main CLK 10MHz USB PORT MOTOR Drive IC U16 U26 U24 CN3 OSC1 CN10 OSC2 Service Manual Samsung Electronics...
By operation of Actuator on the frame, the MP Sensor (Photo Interrupter) on the engine board informs the state of paper to CPU whether it is empty or not. It reads the D0 Bit of CPU for recognizing paper in MP, and paper is fed from MP if there is. Service Manual 4-10 Samsung Electronics...
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The motor driving circuit is formed when the Driver IC is selected in the first place. The A3977 (Motor driver IC) is used in this case. But, the resistance Rs value of sensing and the voltage value of the V reference can be changed by motor driving voltage value. Service Manual 4-11 Samsung Electronics...
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S U M M A RY OF PRO D U C T 4.4 Main PBA (PCL Model) Service Manual 4-12 Samsung Electronics...
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S U M M A RY OF PRO D U C T OSC2 U3 CN13 CN12 OSC5 CN8 OSC4 CN10 CN11 ML-1710 (ML-1510) ML-1750 Processor Samsung Jupiter4 90MHz Samsung SPGPm 166MHz PC Interface USB 1.1 USB 2.0 USB/IEEE1284 (Parallel) Emulation SPL, PCL6, (Samsung Printer Language) IBM ProPrinter, EPSON OS Compatibility Win 98/Me/2000/XP Win 9x/NT/4.0/Me/2000/XP...
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- It is used as Swath buffer, System working memory area, etc. when printing. It stores the font list, com- pressed into flash memory, on DRAM and uses it as PCL font. - Capacity : 8M Byte (Basic), upto 64M Byte (Factory Option) - Type : SDRAM 100MHz/133MHz , 16bit Service Manual 4-14 Samsung Electronics...
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LSU I/F PULSE WIDTH MODULATOR MOT OR CONTROLLER 128x16 x2 ADC (3CH) gCODEC PARALLEL PORT INTERFACE GRAPHIC EXECUTION UNIT MISC CONTROLLER ROTATOR/ ENGINE Comm. I/F SCALER/ HALFTONER 1024x8, 256x8x 4 INTERRUPT CTRL (5CH) TIME CONTROL UNIT Service Manual 4-15 Samsung Electronics...
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(PANEL CON.) 220V : 250V 2A H 220V : 250V T 5A H (H/L CON.) MHV OPC SUPPLY COVER OPEN SWITCH MANUAL SENSOR FEED SENSOR PAPER-EMPTY SENSOR EXIT SENSOR MAIN PBA CON. F101 250V L2A Service Manual 4-16 Samsung Electronics...
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- Error: 1. If SUP is GND, a density is dramatically going down. 2. If SUP is floating due to instable contacting point of terminal, and etc., a density is signif- icantly going down as much as it cannot be recognized with eyes. Service Manual 4-17 Samsung Electronics...
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AVG : 55 Wh PRINTING 1.0 A 0.14A 2.0 A AVG : 250 Wh Sleep-Mode 0.8A 0.01A 0.4A AVG : 10 Wh 4) Length of Power Cord : 1830 ± 50mm 5) Power Switch : Training Manual 4-18 Samsung Electronics...
1) Triac (THY1) feature - 12A,600V SWITCHING 2) Phototriac Coupler (PC3) - Turn On If Current : 15mA ~ 50mA(Design: 16mA) - High Repetive Peak Off State Voltage : Min 600V Service Manual 4-19 Samsung Electronics...
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AD converter. The voltage value for impressing to the transfer roller is decided by the changed value. Service Manual 4-20 Samsung Electronics...
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The temperature after the 3 seconds is checked. If it is over 240°C, it is error. • If the temperature has been higher than 220°C over 25 seconds, it is an error even through the temperature doesn’t reach 240°C. Service Manual 4-21 Samsung Electronics...
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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.
3. Unplug the power cord. 4. Use a flat and clean surface. 5. Replace only with authorized components. 6. Do not force plastic-material components. 7. Make sure all components are in their proper position. Service Manual Samsung Electronics...
2. Remove the Front Cover in the direction of 5. Remove the Top Cover in the direction of arrow. arrow. Top Cover Front Cover 3. Remove four screws. 6. Remove the Rear Cover from the Top Cover. Rear Cover Service Manual Samsung Electronics...
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3. Remove two screws and take the Thermostat out of the Fuser. Thermostat 7. Remove the Thermister from the Fuser Cover. 4. Remove two screws and take the Halogen Lamp out of the Heat Roller. Heat Roller Thermister Halogen Lamp Service Manual Samsung Electronics...
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2. Unplug two connectors(Block) from the boards, then remove four screws. Fuser Ass’y 5. Remove one screw and take the Idle Gear out. Idle Gear 3. Remove two screws and take the Thermostat out of the Fuser. Thermostat Service Manual Samsung Electronics...
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• Additional state: Be careful especially not to dam- age the covering of the fusing assembly. (If the cover is damaged, it could cause an electric leakage.) Thermister Service Manual Samsung Electronics...
- Top Cover(see page 5-2) 2. Remove two screws and unplug one connector from the Frame. 5. Unplug four screws and take the LSU out. 3. Remove the LED PBA Ass’y as shown below. LED PBA Cover Service Manual Samsung Electronics...
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5.7 Driver Ass’y 1. Before you remove the Fuser, you should 3. Unplug one connector from the Driver Ass’y remove: - Top Cover(see page 5-2) Drive Ass'y 2. Remove the six screws from the Drive Ass’y. Service Manual Samsung Electronics...
1. Before you remove the Fuser, you should remove: - Top Cover(see page 5-2) Main PBA - Engine Shield Ass’y(see page 5-8) 2. Unplug one connector and remove five screws from the Main PBA. Then lift the Main PBA out, as shown below. Service Manual Samsung Electronics...
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- Top 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. Inlet Bracket 4. Remove three screws and take The SMPS out. SMPS Service Manual Samsung Electronics...
- LSU(see page 5-6) Lens Holder 2. Remove three screws and take the Transfer Earth out. Transfer Earth 4. Unlatch the Bush and remove it. Then lift the Transfer Roller out, as shown below. Transfer Roller Bush Service Manual 5-10 Samsung Electronics...
Ass'y Feed Idle Shaft Bush 7. Remove the Feed Roller and Feed Roller 1, as shown below. 4. Remove three screws from the Feed Bracket Feed Roller and take it out. Feed Bracket Feed Roller1 Service Manual 5-11 Samsung Electronics...
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Pick up Ass'y 5. Remove two screw then remove The Manual Solenoid and Pick Up Solenoid. 3. Remove the Pick up Gear Ass’y, as shown below. Pick up Gear Ass'y (Pick up) Solenoid (Manual) Solenoid Service Manual 5-12 Samsung Electronics...
6.1.1 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 CN3(ML-1750) or CN2(ML-1710/1510) of the Main control board. Service Manual Samsung Electronics...
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The front part of paper is jammed just after passing through the discharge sensor. Out Bin Full The Out bin is filled with paper. LSU Not Ready LSU Scanner Motor not ready or Hsync signal not output. Service Manual Samsung Electronics...
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[Up] button to Check LD. LD is functioning and the middle button is on. If the LD is normal, all LEDs are on. Pickup clutch on The Solenoid in the printer is in operation. To stop the operation, Press the button [shift] and [Enter] together. Service Manual Samsung Electronics...
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Indicates the function of the Fan, same method of the code ‘07’. Manual Pickup Test : Indicates the function of th Manual Pickup, same method of the code ‘07’. Manual Sensor Test : Indicates the function of the Manual Sensor, same method of the code ‘07’. Service Manual Samsung Electronics...
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READY Mode, and '88' shows in the DCU. In this mode, without any detection, the printer begins printing(trial printing and data from the PC). It is convenient to use this mode when the engine malfunction is detected in the control board. Service Manual Samsung Electronics...
4) The paper passed the paper exit sensor moves out from the set. (Jam 2 occurs sometime after if the tail- ing edge of the paper is not coming out from the set after the leading edge of paper passes the paper exit sensor.) Service Manual Samsung Electronics...
The inside of the printer is still hot. pulling. Continue with the next step. 2) Open the rear output tray. 4) Close the rear output tray. Open and close the front cover. Printing can be resumed. Service Manual Samsung Electronics...
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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. Service Manual Samsung Electronics...
• Do not use creased, damp or highly curled paper. • Do not mix paper types in the input tray. • Use only recommended print media. • Ensure that the recommended print side is facing down when loading paper into the input tray. Service Manual Samsung Electronics...
1) Hold down the Cancel button for about 2 seconds to print a demo page. Hold down the Cancel button for about 6 seconds to print a configuration sheet. 2) The Demo page or the configuration sheet shows the printer’s current configuration. <Demo Page : ML-1710> <Demo Page : ML-1750> Service Manual Samsung Electronics...
3) Your printer automatically picks up a sheet of paper from the tray and prints out a cleaning sheet with dust or toner particles on it. Note: The cartridge cleaning process takes some time. To stop printing, turn the power off. Service Manual Samsung Electronics...
(Pmotor Error) simultaneously flashing every one-second. LSU Not Ready Error The printing is stop in the fad status, and the [Error] LED (green) and (HSYNC Error) the [Toner Save] LED are simultaneously flashing every 4 seconds. Service Manual Samsung Electronics...
Transfer Roller 45.3mm image ghost Heat Roller 64.1mm Black spot and image ghost Pressure Roller 75.5mm black spot on the backside L S U Fuser Toner Cartridge L S U Fuser Toner Cartridge <Rollers Layout> Service Manual Samsung Electronics...
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ALIGNMENT & A D J U S T M E N T S Service Manual Samsung Electronics...
4. No. 4. : Open the front cover and check odically at the top of a black image. ribs that corresponds to the position of the voids. Remove if found. 5. If the problems are not solved, replace the developer cartridge. Service Manual Samsung Electronics...
1, take measures as to replace the develop- er cartridge and try to print out. 5. Clean the inside of the set against the paper particles and foreign matter in order not to cause the trouble. Service Manual Samsung Electronics...
HVPS. in the side of the Developer and charge terminal of HVPS. 3. Replace the HVPS if not solved by the above direction 1 and 2. Service Manual Samsung Electronics...
4. Is the movement(Up and Down) of 4. Clean the bushing part of the transfer the transfer roller smooth? roller. 5. Is the HVPS normal? 5. If the problem is still not solved, replace the developer. Service Manual Samsung Electronics...
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Digital Printer mal paper or transparencies such as OHP, the software application and after using return- Digital Printer higher transfer voltage is required. ing to the original mode is recommended. Digital Printer Digital Printer Digital Printer Service Manual Samsung Electronics...
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2. If the transfer roller is contaminated, satins 2. If the transfer roller is contaminated, run PC on the face of page will occur. Cleaning Mode Print 2 or 3 times. Digital Printer And perform Self-Test 2 or 3 times to remove contamination. Service Manual Samsung Electronics...
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2. Perform the engine self test using DCU to check if the Solenoid is normal.(refer to code 06) 3. If not solved by the above directions 1-2, Replace the engine board. 4. Turn the power off, delete the data of PC and try printing again. Service Manual Samsung Electronics...
3. Clean with soft cloth dampened with IPA(Isopropyl ter. Alcohol) or water. 4. If the paper feeds into the printer rand Jam 0 occurs, 4. Replace the SMPS-HVPS and/or Sensor. perform DCU to check feed-sensor of the engine board. Service Manual Samsung Electronics...
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3. Remove the jammed paper after disassembling the fuser : Clean the surface of the pressure roller with dry gauze. • Remove the toner particles stained on the rib. • Check the assemblage and performance of the exit. Service Manual Samsung Electronics...
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3. The surface of the heat roller with IPA or water 4. Check the warp or separation of the sprint claw and the holder plate claw, and then man- age it. Service Manual 7-10 Samsung Electronics...
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2. How to remove the rolled in the OPC Drum. • Remove the paper while turning the OPC Drum against the ongoing direction. • C;eam fomger[romts on the OPC Drum spft;u with IPA(Isopropyl Alcohol) or tissue. Service Manual 7-11 Samsung Electronics...
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Solution DCU Mode : Perform DCU diagnostic code 05. If the DCU Replace LSU. error code 95 is displayed, replace LSU. If you cannot solve the problem after you replace LSU, replace the main board. Service Manual 7-12 Samsung Electronics...
1. Bending or deformation of the actuator of the paper sen- 1. Replace the defective actuator. sor. 2. The function of the engine board is defective Perform. 2. Replace the engine board. DCU mode : Perform DCU diagnostic code 8. Service Manual 7-13 Samsung Electronics...
Main Control board. Perform DCU Connect. mode : If Error state '64' occurs, Check the related codes of the Cover Open Error 2. Replace the Main Control board or Cover Open S/W. Service Manual 7-14 Samsung Electronics...
1. Replace the power supply cord or SMPS. 2. Check the inferiority of LED-Panel on the front-cover if 2. Replace the control board. the LED of Panel does not appear after normal warming- 3. Replace the LED-panel. Service Manual 7-15 Samsung Electronics...
1. If the supply of +24v is unstable in the Main Control board 1. Replace LSU. linking with LSU, check drive by DCU Mode : LSU Check -05- LSU Motor on. 2. Replace the Main Control board. Service Manual 7-16 Samsung Electronics...
7.4 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. 7.4.1 Precautions on Safe-keeping of Toner Cartridge Excessive exposure to direct light more than a few minutes may cause damage to the cartridge.
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(1)Check whether foreign sub- stances or toner are stuck to the terminal (contact point) of the developer. (2)Check whether the state of the terminal assembly is normal. 3. If it cannot be recycled: Replace the developer. Service Manual 7-18 Samsung Electronics...
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2 times. (2)Check whether the state of (2)If toner nearly being expired the terminal assembly is nor- are collected to use, it is mal. judged as the recycled devel- oper. Service Manual 7-19 Samsung Electronics...
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4. If the scanner needs to be connected to the printer, 4. Check if the printer cable is directly connected to periph- first the remove the scanner from the PC to see if the eral devices printer is properly working alone. Service Manual 7-20 Samsung Electronics...
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Turn the PC and printer off, and reboot the system to print again. If not solved, double-click the printer in my computer If the regular fonts are not printed this time again. the cable must be defective so replace the cable with new one. Service Manual 7-21 Samsung Electronics...
3. Delete the unnecessary files to secure enough (The printing job sometimes stops or due to insufficient space of the hard disk and start printing job again. virtual memory, but it actually comes from the insuffi- cient space of the hard disk.) Service Manual 7-22 Samsung Electronics...
Before choosing the document, the menu is still inactive. Or put the document out of the list and repeat the routine as in the above or finish the spool manager. Service Manual 7-23 Samsung Electronics...
O : Service available X : Service not available Description SEC.Code Q’ty Remark ELA UNIT-RX DRIVE JC96-02733A BRACKET-P-GEAR 1400 GEAR-RDCN 53/26 GEAR-RDCN 113/33 GEAR-RDCN 57/18 RING-E BRACKET-P-MOTOR 1400 GEAR-RDCN 103/41 JC66-00390A GEAR-RDCN 90/31 JC66-00392A MOTOR STEP-HUMMINGBIRD JC31-00028A PMO-IMPELLER_DRV Service Manual Samsung Electronics...
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