Samsung ML-1665 Service Manual
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Samsung ML-1665 Service Manual

Service manual
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1. Speed
• Up to 16 ppm in A4 (17 ppm in Letter)
2. Processor
• Jupiter4e 150 MHz
3. Printer Language
• GDI

Service Manual

Laser Printer

ML-1660/1665
4. Memory
• 8 MB
5. Interfaces
• Compatible with USB 2.0
6. Toner cartridge
• Initial : 0.7K
• Sales : 1.5K

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Summary of Contents for Samsung ML-1665

  • Page 1: Service Manual

    Service Manual Laser Printer ML-1660/1665 4. Memory 1. Speed • Up to 16 ppm in A4 (17 ppm in Letter) • 8 MB 2. Processor 5. Interfaces • Jupiter4e 150 MHz • Compatible with USB 2.0 3. Printer Language 6. Toner cartridge •...
  • Page 2 GSPN (Global Service Partner Network) North America : service.samsungportal.com Latin America : latin.samsungportal.com CIS : cis.samsungportal.com Europe : europe.samsungportal.com ⓒ Samsung Electronics Co.,Ltd. December. 2009 China : china.samsungportal.com Printed in Korea. Asia : asia.samsungportal.com Mideast & Africa : mea.samsungportal.com VERSION NO. : 1.00...

  • Page 3: Table Of Contents

    Contents chapter 1 Precautions 1.1 Safety Warning …………………………………………………… 1-1 1.2 Caution for safety ………………………………………………… 1-2 1.2.1 Toxic material ………………………………………………… 1-2 1.2.2 Electric Shock and Fire Safety Precautions ……………… 1-2 1.2.3 Handling Precautions ……………………………………… 1-3 1.2.4 Assembly / Disassembly Precautions ……………………… 1-3 1.2.5 Disregarding this warning may cause bodily injury ………...
  • Page 4 Contents 3.2 Screws used in the printer ……………………………………… 3-2 3.3 Cover ……………………………………………………………… 3-3 3.3.1 Left/Right cover ……………………………………………… 3-3 3.3.2 Rear bracket ………………………………………………… 3-3 3.3.3 Cover-open ………………………………………………… 3-4 3.3.4 Top/Front cover ……………………………………………… 3-4 3.4 Main PBA ………………………………………………………… 3-5 3.5 SMPS/HVPS board ……………………………………………… 3-6 3.6 Fuser unit …………………………………………………………...
  • Page 5 Contents chapter 5 System Diagram 5.1 Block Diagram …………………………………………………… 5-1 5.2 Connection Diagram……………………………………………… 5-2 chapter 6 Reference Information 6.1 Tool for Troubleshooting ………………………………………… 6-1 6.2 Acronyms and Abbreviations …………………………………… 6-2 6.2.1 Acronyms …………………………………………………… 6-2 6.2.2 Service Parts ………………………………………………… 6-4 6.3 A4 ISO 19798 Standard Pattern ………………………………… 6-8 6.3.1 A4 ISO 19752 Standard Pattern ……………………………...

  • Page 6: Safety Warning

    High voltages and lasers inside this product are dangerous. This product should only be serviced by a factory trained service technician. (2) Use only Samsung replacement parts. There are no user serviceable parts inside the product. Do not make any unauthorized changes or additions to the product as these could cause the product to malfunctions and create an electric shocks or fire hazards.

  • Page 7: Caution For Safety

    Take care not to cut or damage the power cable or plugs when moving the machine. (9) Use caution during thunder or lightning storms. Samsung recommends that this machine be disconnected from the power source when such weather conditions are expected. Do not touch the machine or the power cord if it is still connected to the wall socket in these weather conditions.

  • Page 8: Handling Precautions

    1.2.4 Assembly / Disassembly precautions Replace parts carefully and always use Samsung parts. Take care to note the exact location of parts and also cable routing before dismantling any part of the machine. Ensure all parts and cables are replaced correctly.

  • Page 9: Disregarding This Warning May Cause Bodily Injury

    Failure to do so could cause the printer to tip or fall possibly causing personal injury or damaging the printer. (5) Do not install the printer on a sloping or unstable surface. After installation, double check that the printer is stable. Samsung Electronics Service Manual...

  • Page 10: Esd Precautions

    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 electricity sufficient to damage an ESD. Samsung Electronics Service Manual...

  • Page 11: Product Specifications

    2. Processor • Jupiter4e 150 MHz 3. Printer Language • GDI 4. Memory • 8 MB 5. Interfaces • Compatible with USB 2.0 ML- 1660 6. Toner cartridge • Initial : 0.7K • Sales : 1.5K Service Manual Samsung Electronics...

  • Page 12: Specifications

    - Red Hat 8~9, - Fedora Core 1~4 - Mandrake 9.2~10.1 - SuSE 8.2~9.2 Mac OS 10.3~10.6 WHQL Windows 2000/XP(32/64bits)/Vista(32/64bits)/2003 Server(32/64bits)/2008 Server(32/64bits) / Win7 /2008 R2 Compatibility Win 2000/XP(32/64bits)/2003 Server/Vista(32/64bits),2008 Server(32/64bits)/ WIn7 /2008 R2 Wired Network Protocol Supporting OS Service Manual Samsung Electronics...

  • Page 13: Paper Handling

    16~32lb (60 to 120g/㎡) Sensing Paper Empty Optional Capacity Cassette Tray Media sizes Media types Media weight Sensing Output Stacking Output Stacking Face-Down 100 sheets @ 75g/㎡(Base Line Paper : Samsung Premium/ Xerox4200) NN Condition Duplex Supporting Samsung Electronics Service Manual...
  • Page 14 30K pages Pick up roller 30K pages 2.1.2.6 Reliability & Service Items Specification Printing Volume (SET AMPV) 75 sheets/month MPBF 10,000 sheets MTTR 30 min. SET Life Cycle 30,000 sheets or 5 years (whichever comes first) Service Manual Samsung Electronics...
  • Page 15 361 x 270 x 113 mm Weight 4.12kg Toner 0.68kg Gross 5.6kg 2.1.2.8 Packing & Accessory Items Life Driver & Network Install CD-ROM Power Cable USB Cable (CIS/China/Korea/India) In-Box Quick Install Guide Warranty Registration Card User’s Manual (PDF File) Samsung Electronics Service Manual...
  • Page 16 Product spec and feature 2.1.2.9 Options Items Specification Memory Second Cassette Wired Network Wireless Network Hard Disk Duplex Unit Service Manual Samsung Electronics...

  • Page 17: Model Comparison Table

    Interface USB 2.0 USB 2.0 USB 2.0 Size (mm) 341 x 224 x 184 mm 353 x 298 x 213 mm 379 x 243 x 225 mm Toner Standard 0.7K / 1K Standard 1.5K Standard 2K Service Manual Samsung Electronics...

  • Page 18: System Overview

    This chapter describes the functions and operating principal of the main component. 2.2.1 Front View This illustration may differ from your machine depending on its model. Control panel Paper length guide Top cover Paper width guides Toner cartridge Output support Tray Output tray (face down) Service Manual Samsung Electronics...

  • Page 19: Rear View

    Product spec and feature 2.2.2 Rear View This illustration may differ from your machine depending on its model. USB port Power receptacle Service Manual Samsung Electronics...

  • Page 20: System Layout

    Frame, Feeding, Developing, Driving, Transferring, Fusing, Cabinet and H/W comprising the main control board, power board, operation panel, PC Interface. NAME NAME Pressure roller Transfer roller Heat roller Deve roller Exit roller Supply roller Toner Cartridge Feed roller Friction pad Charge roller Pickup roller 2-10 Service Manual Samsung Electronics...
  • Page 21 In the front side, there is a paper level indicator. 3) Pick- up roller It has functions such as a paper pickup function, driving control function, paper feeding function, and removing electronic static function. Pick up roller is drive by solenoid. 2-11 Service Manual Samsung Electronics...

  • Page 22: Transfer Roller

    - In ML-1660, the driving device is consisted of OPC, Pick- up, Feed, Fuser, Gear- Train connected with Mounting member. A step motor for driving is assembled to the left frame. • Driving Frequency: Step Motor 840 PPS (1050rpm) • It is a power delivery unit by gearing: Step Motor → Pick-up/Feeder/Transfer/Fuser/Exit 2-12 Service Manual Samsung Electronics...

  • Page 23: Pressure Roller

    Teflon. When a paper passes between a heat roller and a pressure roller, toner adheres to the surface of a paper permanently. 5) Halogen Lamp - Voltage 120 V : 115 ± 5 % 220 V : 230 ± 5 % - Capacity : 600 Watt ± 25 W 2-13 Service Manual Samsung Electronics...
  • Page 24 - A fuser power is cut off when a front cover is opened - Maintain a temperature of fuser cover’s surface under 80(C for user, and attach a caution label at where customer can see easily when customer open a rear cover. 2-14 Service Manual Samsung Electronics...
  • Page 25 /HSYNC signal is detected, the image data is sent to the LSU to adjust the left margin on paper. The one side of the polygon mirror is one line for scanning. OPC Drum Photo Diode Polygon Mirror Polygon Motor Motor Driver LD Driver circit LD(Laser Diode) Protector panel 2-15 Service Manual Samsung Electronics...

  • Page 26: Toner Cartridge

    • Handling of wasted toner : Collect the wasted toner in the cleaning frame by using cleaning blade • OPC Drum Protecting Shutter : None • Classifying device for toner cartridge: ID is classified by CRUM. Max -1.4KV Cleaning Blade -100V Cleaning Roller 0.20mW -720V -150V↓ -350V +3.5kV -550V 2-16 Service Manual Samsung Electronics...

  • Page 27: Engine H/W Specifications

    The signals from the paper feed jam sensor and paper empty sensor are directly inputted to the main board. CN6, Power I/F CN4, LSU I/F CN8, Pick CN2, Fuser up_clutch CN1, Hyper CN7, Main CN5, Sensor motor drive 2-17 Service Manual Samsung Electronics...
  • Page 28 - Access Time : 70 nsec 2) SDRAM When Printing, use Band Buffer, System Working Memory Area . - 8M capa : 8M Byte basic. 8M :Printing System Working Memory Area - Access Time : 60 nsec 2-18 Service Manual Samsung Electronics...
  • Page 29 TR driven from the noise pulse, which is occurred when the solenoid is de-energized. ■ Motor Driving The main motor driving circuits is on the main board There is motor driver IC on the main board control the step motor. 2-19 Service Manual Samsung Electronics...

  • Page 30: Main Board

    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 +3.3V and +24V. Main board Fuser 2-20 Service Manual Samsung Electronics...
  • Page 31 - Output Voltage Rising Time : 50 ms Max - Output Voltage Falling Time : 50 ms Max - Output Loading range : 10 MΩ ~ 1000 MΩ - Output Control Signal (BIAS-PWM) : the CPU is HV output when PWM is low. 2-21 Service Manual Samsung Electronics...
  • Page 32 1.8A 100ms RIPPLE NOISE Voltage 100mVp-p Under 500mVp-p Maximum output 2.64W 32.4W Peak output 3.3W 43.2W 100ms Protection for loading shortage Shut down or Fuse Shut down or Output and overflowing current Protection Voltage Drop 2-22 Service Manual Samsung Electronics...

  • Page 33: Engine F/W Contol Algorithm

    AD converter. The voltage value for impressing to the transfer roller is decided by the changed value. 2-23 Service Manual Samsung Electronics...

  • Page 34: Lsu

    The engine mode is changed to recovery mode and the engine informs the main system of the engine mode. And the engine checks the LSU error. If the error doesn’t happen, the printing job will be proceeding. 2-24 Service Manual Samsung Electronics...

  • Page 35: S/W Descriptions

    (PCL, PS, GDI, etc.) to be able to make the user to take same output as originally one what composed in Host. 2. Kernel that control and management the whole procedure include of Control flow and Printing Job before transfer to Engine system. 2-25 Service Manual Samsung Electronics...

  • Page 36: Block Diagram

    4. Port Monitor that manages the network communication between spooler and Network Interface Card, or various additional application and Network Interface Card,(this is, at first, make communication logical port, manage the data, transfer them from spooler to network port, and offer the result of printing). 2-26 Service Manual Samsung Electronics...
  • Page 37 - Engine print the received data to required paper with the sequential developing process. The additional printing function are realized in (1) Web environment (2) Window environment. On addition, Kernel informs a status of printing status and printer status to user made printing job with the Status Monitor. 2-27 Service Manual Samsung Electronics...

  • Page 38: Precautions When Replacing Parts

    3.1.1 Precautions when assembling and disassembling * Use only approved Samsung spare parts. Ensure that part number, product name, any voltage, current or temperature rating are correct. Failure to do so could result in damage to the machine, circuit overload, fire or electric shock.

  • Page 39: Screws Used In The Printer

    FRAME-PAPER PATH SCREW-TAPTYPE;PWH,+,B,M3,L10,NI PLT,SWRCH18A 6003-000282 FRAME-FEED IDLE SCREW-TAPTYPE;BH,+,-,B,M3,L8,ZPC(BLK),SWRCH18A,- 6003-000269 SCREW-TAPTYPE;BH,+,-,S,M3,L6,ZPC(WHT),SWRCH18A,- FRMAE MAIN-LEFT 6003-000282 SCREW-TAPTYPE;BH,+,-,B,M3,L8,ZPC(BLK),SWRCH18A,- 6003-000269 FRMAE MAIN-RIGHT SCREW-TAPTYPE;BH,+,-,S,M3,L6,ZPC(WHT),SWRCH18A,- 6003-000269 FRAME MAIN-MIDDLE SCREW-TAPTYPE;BH,+,-,S,M3,L6,ZPC(WHT),SWRCH18A,- 6003-000282 SCREW-TAPTYPE;BH,+,-,B,M3,L8,ZPC(BLK),SWRCH18A,- 6003-000282 COVER-TOP SCREW-TAPTYPE;BH,+,-,B,M3,L8,ZPC(BLK),SWRCH18A,- 6003-000282 CARTRIDGE-TONER SCREW-TAPTYPE;BH,+,-,B,M3,L8,ZPC(BLK),SWRCH18A,- 6003-000269 SCREW-TAPTYPE;BH,+,-,S,M3,L6,ZPC(WHT),SWRCH18A,- MAIN LINE 6003-000282 SCREW-TAPTYPE;BH,+,-,B,M3,L8,ZPC(BLK),SWRCH18A,- Service Manual Samsung Electronics...

  • Page 40: Cover

    3.3.1 Left/Right cover 1. Take off the left cover by removing hooks from 2. Take off the right cover by removing hooks from its edge. its edge. 3.3.2 Rear bracket 1. Remove 4 screws. Release the rear bracket. Service Manual Samsung Electronics...

  • Page 41: Cover-Open

    1. Release the cover-open from the hook of both sides. 3.3.4 Top/Front cover 1. Remove 2 screws. Hold the top and front cover and pull both of them to the direction of arrow. 2. Separate the top and front cover. Top cover Front cover Service Manual Samsung Electronics...

  • Page 42: Main Pba

    Disassembly and Reassembly 3.4 Main PBA 1. To remove the main PBA, first remove the right cover. (Refer to 3.3.1) 2. Remove 4 screws. Unplug all connectors. And release the Main PBA. Service Manual Samsung Electronics...

  • Page 43: Smps/Hvps Board

    1. To remove the SMPS/HVPS board, first remove the right cover and rear bracket. (Refer to 3.3) 2. Remove 4 screws. Unplug all connectors. And release the main-PBA bracket. 3. Remove 8 screws. Unplug a connector. And release the SMPS/HVPS board. Service Manual Samsung Electronics...

  • Page 44: Fuser Unit

    3.6 Fuser unit 1. Remove the main PBA bracket. (Refer to 3.5) 2. Unplug the connector on SMPS/HVPS board. 3. Remove 3 screws. 4. Pull the fuser unit to the direction of arrow slightly and release it. Service Manual Samsung Electronics...

  • Page 45: Lsu

    1. Remove the front/ top/ rear cover. (refer to 3.3 cover) 2. Remove 4 screw securing the COVER-LSU. Release the COVER-LSU. COVER-LSU COVER-LSU COVER-LSU Front view Top view Front view Front view Top view Top view 3. Remove 3 screws. Release the LSU. Service Manual Samsung Electronics...

  • Page 46: Drive Unit

    Disassembly and Reassembly 3.8 Drive unit 1. Remove the left cover. 2. Remove 4 screws. Release the drive unit. Service Manual Samsung Electronics...

  • Page 47: Step Motor

    1. Remove the drive unit. (Refer to 3.8) Caution 2. Remove 7 screws. Release the left-frame When reassembling the drive unit, put down the bracket. drive unit and assemble the left-frame bracket. 3. Remove 2 screws. Release the step motor. 3-10 Service Manual Samsung Electronics...

  • Page 48: Pick Up Roller

    Disassembly and Reassembly 3.10 Pick up roller 1. Open the top cover. 2. Take out the toner cartridge. 3. Push the hinge to the direction of arrow. 3-11 Service Manual Samsung Electronics...

  • Page 49: Alignment And Troubleshooting

    Shows the status of jam occurance of your machine. Online/ Error Shows the status of your machine. Print Screen Prints the displayed screen in the monitor. Power You can turn the power on and off with this button. Service Manual Samsung Electronics...

  • Page 50: Understanding The Control Panel

    Prepare a new cartridge for replacement. You may temporarily increase the printing quality by redistributing the toner. • The machine is printing in manual feed mode or in manual duplex mode. • The machine is canceling a print job. Service Manual Samsung Electronics...

  • Page 51: Jam Removal

    If the paper does not move when you pull, or if you do not see the paper in this area, check the fuser area around the toner cartridge. If you do not see the jammed paper, go to next step. Service Manual Samsung Electronics...
  • Page 52 If you do not see the jammed paper, go to next 8. Replace the toner cartridge. step. 6. Pull the toner cartridge out. 9. Close the fuser unit cover. 10. Close the top cover and open the output tray. Printing automatically resumes. Service Manual Samsung Electronics...

  • Page 53: Printing A Report

    In the ready mode, press and hold this button for about 6 seconds sheet until the green LED blinks slowly, and release. Supplies info report In the ready mode, press and hold this button for about 10 seconds until the green LED blinks rapidly, and release. Service Manual Samsung Electronics...

  • Page 54: Demo Page

    Alignment and Troubleshooting ■ Demo Page Service Manual Samsung Electronics...
  • Page 55 Alignment and Troubleshooting ■ Supplies Information Report Service Manual Samsung Electronics...

  • Page 56: Periodic Defective Image

    Transfer Roller 39.2mm Ghost, Damaged image by abnormal transfer Transfer roller Pressure Roller 75.4mm Background Fuser Fusing Roller 77.5mm Black spot and image ghost Pressure roller Transfer roller Heat roller Deve roller Charge roller Supply roller Service Manual Samsung Electronics...

  • Page 57: Firmware Upgrade

    1) Connect PC and printer with USB cable. 2) Turn on the power of printer.(Ready Status) 3) Drag the f/w file and Drop down on the usblist2.exe. And then f/w update will be started automatically. 4) Please wait until end reboot. Service Manual Samsung Electronics...

  • Page 58: Using The Smart Panel Program

    Or, if you are a Windows user, you can launch it from the Start menu, select Programs or All Programs > Samsung Printers > your printer driver name > Smart Panel. • If you have already installed more than one Samsung machine, first select the correct machine model you want in order to access the corresponding Smart Panel.

  • Page 59: Opening The Troubleshooting Guide

    Guide. 4.1.7.3 Changing the Smart Panel Program Settings Right-click (in Windows or Linux) or click (in Mac OS X) the Smart Panel icon and select Options. Select the settings you want from the Options window. 4-11 Service Manual Samsung Electronics...

  • Page 60: Troubleshooting

    See the troubleshooting OPE LED Orange LED on? flow chart. Green OK? - Red : Yes - Orange : No Remove the Print(test pattern) jammed paper. printing Refer to "Solution Quality is of Image Problem" Nomal? 4-12 Service Manual Samsung Electronics...

  • Page 61: Basic Check List

    --> Refer to section 4.2.5 6. Check consumables (toner etc.). • Using the keys print the Test Pattern. --> Expected life of various consumable parts, compare this with the figures printed and replace as required 4-13 Service Manual Samsung Electronics...

  • Page 62: Initial Inspection

    1. Use only paper which is of a suitable quality, weight and size? See the user guide. 4. Check the overall condition of the printer 1. Is the printer properly maintained ? Clean the Paper Transport Passages. Any rollers with dirt surfaces should be cleaned or replaced. 4-14 Service Manual Samsung Electronics...

  • Page 63: Bad Discharge

    2. Check if the separation pad in the Replace the separation pad. cassette is worn away. Clean with soft cloth dampened 3. Check the surface of the with IPA(Isopropyl Alcohol) or roller-pick up is contaminated. replace the pick up roller. 4-15 Service Manual Samsung Electronics...
  • Page 64 2. If the recording paper is stuck in the discharge Reassemble the Actuator-Feed roller and the fuser just after passing and Spring-Actuator if the returning through the Actuator-Feed, Feed is bad. Actuator may be defective. 4-16 Service Manual Samsung Electronics...
  • Page 65 1. Solenoid malfunction (the solenoid does not work properly) Replace the solenoid if necessary. Clean the pad friction with soft 2. Cassette holder pad is contaminated with foreign clothe dampened with IPA matter.(oil...) (Isopropyl Alcohol). 4-17 Service Manual Samsung Electronics...
  • Page 66 1. Paper is too much thin. How to remove the rolled in the OPC Drum. - Remove the paper while turning 2. The face of paper is curled. the OPC Drum against the ongoing direction. 4-18 Service Manual Samsung Electronics...

  • Page 67: Malfunction

    1. Bending or deformation of Replace the defective actuator. the actuator of the paper sensor. 2. Check if the Reconnect the connector. connector of the sensor PBA is If the problem persist, replace the connected properly. sensor PBA. 4-19 Service Manual Samsung Electronics...
  • Page 68 Description : The ERROR lamp does not come on even when the printer cover is open 1. Check the insertion of the Cover 1. Check the connector Open S/W Connect. and circuit of the cover switch 2. Replace the SMPS/HVPS board. department in the SMPS board. 4-20 Service Manual Samsung Electronics...
  • Page 69 Description : Main motor is not driving when printing, and paper does not feed into the printer, resulting ‘Jam 0’. Check the motor harness, replace 1. Motor harness may be defective. it, if defective. Replace the Motor or Drive unit, 2. Check the motor operation. if necessary. 4-21 Service Manual Samsung Electronics...
  • Page 70 Description : When system power is turned on, all lamps on the operator panel do not come on. 1. Check if the flat cable between the main board and Reconnect the flat cable. HVPS/SMPS board is connected correctly. 2. Check if the HVPS/SMPS Replace the HVPS/SMPS board. output is normal. 4-22 Service Manual Samsung Electronics...
  • Page 71 5) Vertical Line Getting Curved Description : When printing, vertical line gets curved. 1. If the supply of +24v 1. Replace LSU. is unstable in the Main board 2. Replace the Main board. linking with LSU. 4-23 Service Manual Samsung Electronics...

  • Page 72: Bad Image

    2. Scratched surface of Replace the transfer roller if the charge roller in the toner cartridge. occurred as No. 3. 3. Partly depression or deformation on the surface of the transfer roller. 4-24 Service Manual Samsung Electronics...
  • Page 73 Remove if top of a black image. found. 5. It may occur when foreign If the problems are not solved, substances are on the OPC Drum. replace the toner cartridge. 4-25 Service Manual Samsung Electronics...
  • Page 74 Charging Roller = 26.7mm in the OPC. Supply Roller = 47mm 2. If the malfunction persists, Transfer Roller = 39.2mm replace the developer. Pressure Roller = 75.4mm Fusing Roller = 77.5mm 4-26 Service Manual Samsung Electronics...
  • Page 75 5. Clean the inside of the set against the paper particles and foreign matter in order not to cause the trouble. 4-27 Service Manual Samsung Electronics...
  • Page 76 1. Clean up the contaminated area by the toner. 2. Replace the HVPS if the 3. Abnormal output from the HVPS. problems are not solved by the above four directions. 4-28 Service Manual Samsung Electronics...
  • Page 77 HVPS. side of the Developer and charge 2. Replace the HVPS if not solved terminal of HVPS. by the above direction 1 and 2. 4-29 Service Manual Samsung Electronics...
  • Page 78 Clean the bushing part of the 4. Is the movement(Up and Down) transfer roller. of the transfer roller smooth? If the problem is still not solved, 5. Is the HVPS normal? replace the developer. 4-30 Service Manual Samsung Electronics...
  • Page 79 If not solved by the direction 3, 4. Transfer roller lifetime check the transfer roller lifetime (50.000 sheets) has expired. and replace it. 5. Abnormal low temperature Wait about 1 hour after power on (below 10℃). before using printer. 4-31 Service Manual Samsung Electronics...
  • Page 80 Select 'Thick Mode' on paper type thicker than normal paper or menu from the software application transparencies such as OHP, higher and after using returning to the transfer voltage is original mode is recommended. required. 4-32 Service Manual Samsung Electronics...
  • Page 81 Check the approved voltage of the 2. The abnormal voltage and supply roller and contact of the bad contact of the terminal of the terminal and adjust if necessary. supply roller 4-33 Service Manual Samsung Electronics...
  • Page 82 Disassemble the fuser and The temperature of the fuser remove the contaminated toner particles on the roller and clean is maintained high. the foreign matter between Thermistor and Heat roller . ( Caution : can be deformed) 4-34 Service Manual Samsung Electronics...
  • Page 83 Alignment and Troubleshooting 12) Stains on the Face of Page Description : The background on the face of the printed page is stained. 1. T oner leakage due to Replace the toner cartridge. improperly sealed developer . 4-35 Service Manual Samsung Electronics...
  • Page 84 2. Disassemble the fuser and clean 2. Pressure roller is contaminated. the H/R(Heat Roller) and P/R (Pressure roller). And check the area between H/R and Thermistor . If contaminated, clean the area not to be deformed. 4-36 Service Manual Samsung Electronics...
  • Page 85 Alignment and Troubleshooting 14) Blank Page Print out (1) Description : Blank page is printed. Remove contamination of the Bad ground contacts in terminals of the developer and OPC and/or developer . the unit. 4-37 Service Manual Samsung Electronics...

  • Page 86: Error Messages

    Code Error message A3-3112 SMART PANEL:Actuator Sensor Failure #A3-3112:Turn off then on. C1-1110 SMART PANEL:Prepare new toner cartridge C1-1120 SMART PANEL:End of life, Replace with new toner cartridge C1-1130 SMART PANEL:End of life, Replace with new toner cartridge C1-1411 SMART PANEL:Toner cartridge is not installed. Install the cartridge. C1-1512 SMART PANEL:Toner cartridge is not compatible.
  • Page 87 • Code:A3-3112 • Error message: SMART PANEL:Actuator Sensor Failure #A3-3112:Turn off then on. • Symptom/Cause: 1. The thermistor is open. 2. The thermistor harness is short. 3. The main board is defective. ED:2010-04-08 Samsung Eletronics...
  • Page 88 • Trouble Shooting Method: 1. Remove the both side cover. 2. Remove the screw from the rear. 3. Remove the Cover-Top. 4. Remove the Cover-Exit. ED:2010-04-08 Samsung Eletronics...
  • Page 89 5. Remove the metal plate after unplugging the fuser connector. 6. Replace the fuser unit after removing 1 screw. 7. The assembly is reverse order of disjointing. ED:2010-04-08 Samsung Eletronics...
  • Page 90 • Error message: SMART PANEL:Prepare new toner cartridge • Symptom/Cause: 1. The toner cartridge has reached its estimated cartridge life. • Trouble Shooting Method: 1. Open the Cover-Exit. 2. Replace the toner cartridge. 3. Close the Cover-Exit. ED:2010-04-08 Samsung Eletronics...
  • Page 91 SMART PANEL:End of life, Replace with new toner cartridge • Symptom/Cause: 1. The toner cartridge has reached its estimated cartridge life. • Trouble Shooting Method: 1. Open the Cover-Exit. 2. Replace the toner cartridge. 3. Close the Cover-Exit. ED:2010-04-08 Samsung Eletronics...
  • Page 92 • Code:C1-1130 • Error message: SMART PANEL:End of life, Replace with new toner cartridge • Symptom/Cause: 1. The toner cartridge has reached its estimated cartridge life. Print the supplies information report. And check the life count. ED:2010-04-08 Samsung Eletronics...
  • Page 93 • Trouble Shooting Method: 1. Open the Cover-Exit. 2. Replace the toner cartridge. 3. Close the Cover-Exit. ED:2010-04-08 Samsung Eletronics...
  • Page 94 1. The toner cartridge is installed improperly, or not installed. • Trouble Shooting Method: 1. Open the Cover-Exit. 2. Reinstall the toner cartridge two or three times to confirm it is seated properly. 3. Close the Cover-Exit. ED:2010-04-08 Samsung Eletronics...
  • Page 95 • Code:C1-1512 • Error message: SMART PANEL:Toner cartridge is not compatible. Check users guide • Symptom/Cause: 1. Ther toner cartridge is not suitable for your machine. 2. The print job can't be executed. ED:2010-04-08 Samsung Eletronics...
  • Page 96 • Trouble Shooting Method: 1. Prepare the Samsung-genuine toner cartridge. 2. Open the Cover-Exit. 3. Replace the toner cartridge. 4. Close the Cover-Exit. ED:2010-04-08 Samsung Eletronics...
  • Page 97 1. Remove all papers on the tray. Remove the jammed paper from the machine. And reload the papers on the tray. 2. Adjust the paper guide to fix the papers. 3. Check the maximum paper capacity of the tray. Remove excess paper from the tray. ED:2010-04-08 Samsung Eletronics...
  • Page 98 1. Open the top cover. Check if the paper has jammed. If there is the jammed paper, remove it. 2. If the error message in Smart Panel is not disappered, check the Regi sensor and actuator. If they are defective, replace them. ED:2010-04-08 Samsung Eletronics...
  • Page 99 1. Error LED on the control pane is blinking because the main door is opened. • Trouble Shooting Method: 1. Close the cover unit it locks into place. 2. If the problem persists, check the cover open sensor that is located on the HVPS board. ED:2010-04-08 Samsung Eletronics...
  • Page 100 1. The fuser unit is defective. 2. The SMPS Triac is defective. 3. The main board is defective. Using an incorrect type of paper may create a fusing error. Please use only paper that meets the specifications required by the machine. ED:2010-04-08 Samsung Eletronics...
  • Page 101 • Trouble Shooting Method: 1. Remove the both side covers. 2. Remove the screw from the rear. 3. Remove the Cover-Top. 4. Remove the Cover-Exit. ED:2010-04-08 Samsung Eletronics...
  • Page 102 5. Remove the matal plate after unplugging the fuser connector. 6. Replace the fuser unit after removing the screw. 7. The assembly is reverse order of disjointing. ED:2010-04-08 Samsung Eletronics...
  • Page 103 1. The fuser unit is defective. 2. The SMPS Triac is defective. 3. The main board is defective. Using an incorrect type of paper may create a fusing error. Please use only paper that meets the specifications required by the machine. ED:2010-04-08 Samsung Eletronics...
  • Page 104 • Trouble Shooting Method: 1. Remove the both side covers. 2. Remove the screw from the rear. 3. Remove the Cover-Top. 4. Remove the Cover-Exit. ED:2010-04-08 Samsung Eletronics...
  • Page 105 5. Remove the metal plate after unplugging the fuser connector. 6. Replace the fuser unit after removing the screw. 7. The assembly is reverse order of disjointing. ED:2010-04-08 Samsung Eletronics...
  • Page 106 1. An error between the LSU(Laser Scanning Unit) and the control circuit of the Main board has occurred. • Trouble Shooting Method: 1. Check the LSU connector. 2. Replace the LSU. 3. If the problem persists, replace the main board. ED:2010-04-08 Samsung Eletronics...
  • Page 107 1. An error between the LSU(Laser Scanning Unit) and the control circuit of the Main board has occurred. • Trouble Shooting Method: 1. Check the LSU connector. 2. Replace the LSU. 3. If the problem persists, replace the main board. ED:2010-04-08 Samsung Eletronics...

  • Page 108: System Diagram

    System Diagram 5. System Diagram 5.1 Block Diagram Service Manual Samsung Electronics...

  • Page 109: Connection Diagram

    System Diagram 5.2 Connection Diagram nP_FEED nP_EMPTY 3.3V_SENSOR 3.3V PICKUP_CLUTCH 24VS 3.3V_LSU nHSYNC nLD_ENABLE nLSU_SH DAC_OUT LSU_CLK nLREADY nPMOTOR 24VS OUT2B OUT2A OUT1B OUT1A HVPS & SMPS THERMISTOR DEV_CLK DEV_OUT 3.3V_CRUM NEUTRAL LIVE Service Manual Samsung Electronics...

  • Page 110: Reference Information

    • Spring Hook Standard : For general use • Tweezers Standard : For general home use, small type. • Software (Driver) installation CD ROM • Cotton Swab Standard : For general home use, for medical service. Service Manual Samsung Electronics...

  • Page 111: Acronyms And Abbreviations

    CRU Memory IMAP Internet Message Access Protocol Center Ware Internet Printing Protocols CWDP Center Ware Device Discovery Images Per Minutes Software(Samsung equivalent of Internetwork Packet Exchange Samsung’s SyncThru) Image Quality CWIS Center Ware Internet Services International Telecommunication Union DADF Duplex Auto Document Feeder...
  • Page 112 PS/3 PostScript Level-3 USDR Un-Shut Down Rate(=NSDR) Printing Video Controller in the XCMI Samsung’s Management Information SPGPm(Graphic Processor for Printer) Base Quality, Cost, and Delivery Warranty Action Remote Control Panel W x D x H Width x Depth x Height...

  • Page 113: Service Parts

    ELA=Electrical Assembly, HOU =Housing MEA UNIT-COVER PA EXIT ASS’Y MEA= Mechanical Assembly, PA=Paper PMO-TRAY EXTENTION MP NE PMO= Processing Mold MP=Multi-Purpose(Bypass) tray NE=for NEC (common as Samsung Halk printer) MEC-CASSETTE ASS’Y(LETTER) MEC = Mechanic Combined unit COVER-M-FRONT M=Mold MPR-NAME/PLATE MPR= Machinery Press,...
  • Page 114 PMO-GUIDE DP SIDE DP=Duplex RING-CS CS= Compress GEAR-MP/DUP DRV MP =Multi-Purpose (Bypass) tray DUP DRV = Duplex Driver IPR-BRKT G DUPI PR=Iron Press BRKT=BRACKET G= Ground UP=Duplex PMO-BUSHING TX(B4) TX=Transmit PMO-TRAY CASE, MP MP=Multi-Purpose tray(Bypass tray) Service Manual Samsung Electronics...
  • Page 115 PBA SUB-MP-SEN =>Sub Printed circuit Board Assembly for the MP-SEN(= Multi-Purpose (Bypass) tray-Sensor) A/S MATERAL-PICKUP,MP FOOT-ML80 HOLDER CATCH CST MC2 MC2=>McKInley2 (Samsung Project code name) IPR-GROUND PLATE A(OPC) OPC=Organic Photo-Conductive ELA M/M-AUD SPEAKER ELA M/M => Electrical Assembly M/M AUD=Audio...
  • Page 116 REGI=Registration PBA SUB-REGI PBA SUB-REGI => Sub Printed circuit Board Assembly for the Registration GROUND-P_SCAN ROLLER GROUND-P =Ground-Press IPR-GUARD C/O S/W C/O = Cover Open S/W= Switch MEA UNIT-TX STACKER TX =Transmit IPR-WASHER SPRING CU CU=Curve Service Manual Samsung Electronics...

  • Page 117: A4 Iso 19752 Standard Pattern

    The life of the toner cartridge and the printing speed are measured using the pattern shown below. (The image is 70% of the actual A4 size). 6.3.1 A4 ISO 19752 Standard Pattern This test page is reproduced at 70% of the normal A4 size Service Manual Samsung Electronics...

  • Page 118: Selecting A Location

    • Front: 482.6 mm (enough space so that the paper tray can be removed) • Back: 100 mm (enough space for ventilation) • Right: 100 mm (enough space for ventilation) • Left: 100 mm (enough space for ventilation) Service Manual Samsung Electronics...

This manual is also suitable for:

Ml-1660Ml-1665

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