Samsung ML-1665 Service Manual

Samsung ML-1665 Manual

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  • Samsung ML-1665 | Service Manual - Page 1
    Service Manual 1. Speed • Up to 16 ppm in A4 (17 ppm in Letter) 2. Processor • Jupiter4e 150 MHz 3. Printer Language • GDI 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 The keynote of Product
  • Samsung ML-1665 | Service Manual - Page 2
    Network) North America : service.samsungportal.com Latin America : latin.samsungportal.com CIS : cis.samsungportal.com Europe : europe.samsungportal.com China : china.samsungportal.com Asia : asia.samsungportal.com Mideast & Africa : mea.samsungportal.com ⓒ Samsung Electronics Co.,Ltd. December
  • Samsung ML-1665 | Service Manual - Page 3
    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
  • Samsung ML-1665 | Service Manual - 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 Defective Image 4-8 4.1.6 Firmware upgrade 4-9 4.1.7 Using the smart panel program 4-10 4.2 Troubleshooting 4-12 4.2.1 Procedure of
  • Samsung ML-1665 | Service Manual - Page 5
    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
  • Samsung ML-1665 | Service Manual - Page 6
    protective cover removed from Laser/Scanner assembly. The reflected beam, although invisible, can damage your eyes. When using this product, these basic safety pre-cautions should always be followed to reduce risk of fire, electric shock, and personal injury. Service Manual 1-1 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 7
    toner cartridge away from children. The toner powder contained in the imaging unit and toner cartridge may be harmful, and if swallowed, you should contact a doctor. 1.2.2 Electric shock and fire safety precautions Failure to follow the following instructions Service Manual 1-2 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 8
    instructions are for your own personal safety to avoid injury and so as not to damage the product. (1) Ensure the product is installed on a level surface, capable of supporting the Drum Cartridge is scratched or touched the print quality will be compromised. Service Manual 1-3 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 9
    of supporting its weight. 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. Service Manual 1-4 Samsung
  • Samsung ML-1665 | Service Manual - Page 10
    of typical ESDs are: integrated circuits,some field effect transistors, and semiconductor "chip" components. The techniques outlined below should be followed to help reduce the incidence floor, can generate static electricity sufficient to damage an ESD. Service Manual 1-5 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 11
    2.1.1 Product Overview ML- 1660 1. Speed • Up to 16 ppm in A4 (17 ppm in Letter) 2. Processor • Jupiter4e 150 MHz 3. Printer Language • GDI 4. Memory • 8 MB 5. Interfaces • Compatible with USB 2.0 6. Toner cartridge • Initial : 0.7K • Sales : 1.5K Service Manual 2-1 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 12
    Controller & S/W Items Processor Memory Std. Option Printer Languages GDI Fonts - Driver Default Driver Install Supporting OS Wired Network WHQL Compatibility Protocol Supporting OS Specification Jupiter4e 150 MHz 8 MB N/A GDI Windows Fonts SPL SPL Windows 2000/XP(32/64bits)/Vista(32
  • Samsung ML-1665 | Service Manual - Page 13
    Product spec and feature Items Specification Wireless Network Protocol N/A Supporting OS N/A Application Smart Panel SmartPanel for Windows/ Macintosh/LINUX Printer Setting N/A Network Management N/A IP Setting N/A Interface Parallel N/A USB Compatible with USB 2.0 Wired Network
  • Samsung ML-1665 | Service Manual - Page 14
    spec and feature 2.1.2.4 Consumables Toner Cartridge Items Black Key Life detect Specification Initial : Average Cartridge Yield 0.7K standard pages. Sales : Average cartridge Yield 1.5K standard pages. Declared cartridge yield in accordance with ISO/IEC 19752. Electronic key(CRUM) Only Toner
  • Samsung ML-1665 | Service Manual - Page 15
    284 x 231.5 x 47.8mm 361 x 270 x 113 mm 4.12kg 0.68kg 5.6kg 2.1.2.8 Packing & Accessory Items In-Box Life Driver & Network Install CD-ROM Power Cable USB Cable (CIS/China/Korea/India) Quick Install Guide Warranty Registration Card User's Manual (PDF File) Service Manual 2-5 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 16
    Product spec and feature 2.1.2.9 Options Items Memory Second Cassette Wired Network Wireless Network Hard Disk Duplex Unit Specification N/A N/A N/A N/A N/A N/A Service Manual 2-6 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 17
    Product spec and feature 2.1.3 Model Comparison Table Samsung ML- 1660 Samsung ML- 2240 HP P1505n Image Speed processor Memory Print Language Input Duplex Interface Size (mm) Toner 16 ppm (A4) 150 MHz 8 MB GDI 150 sheets Bin Manual USB 2.0 341 x 224 x 184 mm Standard 0.7K / 1K 22 ppm (A4) 150
  • Samsung ML-1665 | Service Manual - Page 18
    of the main component. 2.2.1 Front View This illustration may differ from your machine depending on its model. 1 Control panel 5 Paper length guide 2 Top cover 6 Paper width guides 3 Toner cartridge 7 Output support 4 Tray 8 Output tray (face down) Service Manual 2-8 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 19
    2.2.2 Rear View Product spec and feature This illustration may differ from your machine depending on its model. 1 USB port 2 Power receptacle Service Manual 2-9 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 20
    Product spec and feature 2.2.3 System Layout This model is consisted of the 9 10 11 13 12 NO. 1 Pressure roller 2 Heat roller 3 Exit roller 4 Toner Cartridge 5 LSU 6 Charge roller 7 OPC NAME Service Manual NO. 8 Transfer roller 9 Deve roller 10 Supply roller 11 Feed roller 12 Friction pad
  • Samsung ML-1665 | Service Manual - Page 21
    Product spec and feature 2.2.3.1 Feeding Part It a center loading method and applies 'friction pad separating method.' Both the side guide and the rear guide can be adjusted for for various types of papers from A6 to legal size roller is drive by solenoid. Service Manual 2-11 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 22
    spec and feature 2.2.3.2 Transfer Roller - The transfer roller delivers the toner of the OPC drum to the paper. - There is no PTL Ass'y. - Life Span : Print over 30,000 sheets (in15~30℃) 2.2.3.3 Driver Assy - In ML Motor → Pick-up/Feeder/Transfer/Fuser/Exit Service Manual 2-12 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 23
    the surface also is coated with 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 Service Manual 2-13 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 24
    Product spec and feature 6) Items for safety Protecting device for overheating - 1st protection device: Hardware cuts off when overheated - 80(C for user, and attach a caution label at where customer can see easily when customer open a rear cover. Service Manual 2-14 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 25
    LSU to adjust the left margin on paper. The one side of the polygon mirror is one line for scanning. OPC Drum Photo Diode LD Driver circit Protector panel LD(Laser Diode) Polygon Mirror Polygon Motor Motor Driver Service Manual 2-15 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 26
    frame by using cleaning blade • OPC Drum Protecting Shutter : None • Classifying device for toner cartridge: ID is classified by CRUM. -100V 8 Cleaning Blade Max -1.4KV 2 Cleaning Roller 1 0.20mW -720V 6 -150V↓ 7 -350V +3.5kV 3 4 5 -550V Service Manual 2-16 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 27
    sensor are directly inputted to the main board. CN6, Power I/F CN4, LSU I/F CN8, Pick CN2, Fuser up_clutch CN7, Main motor drive CN1, Hyper CN5, Sensor Service Manual 2-17 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 28
    be download System Program through PC Interface - Capacity : 0.5M Byte - 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 Service Manual 2-18 Samsung
  • Samsung ML-1665 | Service Manual - Page 29
    Product spec and feature (c) Sensor Input Circuit ■ Paper Empty Sensing The Paper empty sensor on the tray -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. Service Manual 2-19 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 30
    Product spec and feature 2.2.4.2 HVPS and high voltage for THV/MHV/BIAS, and the outputted high voltage is supplied to the toner, OPC cartridge, and transfer roller It is the power source of entire system. It is assembled +3.3V and +24V. Main board Fuser Service Manual 2-20 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 31
    Product spec and feature ■ HVPS Board • Transfer High Voltage (THV+) - Input Voltage : 24 V DC ± 15% - Output Voltage : THV+: max +3.5kV ± 10 Loading range : 10 MΩ ~ 1000 MΩ - Output Control Signal (BIAS-PWM) : the CPU is HV output when PWM is low. Service Manual 2-21 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 32
    Product spec and feature ■ SMPS Board • AC Input - Input Rated Voltage : AC 220V ~ 240V AC 110V ~ 127V - Input Voltage fluctuating range : AC 21.6~26.4V) -> 27.6V 1.35A 1.8A Under 500mVp-p 32.4W 43.2W Shut down or Output Voltage Drop Remark 100ms 100ms Service Manual 2-22 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 33
    Product spec and feature 2.2.5 Engine F/W Contol Algorithm 2.2.5.1 Feeding If feeding from a cassette, the drive of the pickup roller is through AD converter. The voltage value for impressing to the transfer roller is decided by the changed value. Service Manual 2-23 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 34
    Product spec and feature 2.2.5.3 Fusing The temperature change of the heat roller's surface is changed to the resistance value through the mode. And the engine checks the LSU error. If the error doesn't happen, the printing job will be proceeding. Service Manual 2-24 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 35
    Product spec and feature 2.2.6 S/W Descriptions 2.2.6.1 Overview The software of ML-1660 system is constructed with 1) Host Software part that the application software operated in Window and Web Environment, and 2) Firmware parts that is a Embedded software controls printing job. 2.2.6.2
  • Samsung ML-1665 | Service Manual - Page 36
    spec and feature 2.2.6.3 Data and Control Flow . GDI(only SCX-4824FN) & PCL6 (PCL XL) The above Block Diagram is explained that: Host Side is made up of 1. Driver that is Windows application software translate printed data to one of printer of printing). Service Manual 2-26 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 37
    spec and feature Firmware to PCL string or compressed GDI bit-map data, Driver translate the all graphic data of it and send Window environment. On addition, Kernel informs a status of printing status and printer status to user made printing job with the Status Monitor. Service Manual 2-27 Samsung
  • Samsung ML-1665 | Service Manual - Page 38
    not make any unauthorized changes or additions to the printer, these could cause the printer to malfunction and create electric shock or fire Bad contacts could lead to overheating and firfe. Damaged cables could lead to electric shock or unit malfunction. Service Manual 3-1 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 39
    that, when reassembling the printer, the correct screws are CARTRIDGE-TONER SCREW-TAPTYPE;BH,+,-,B,M3,L8,ZPC(BLK),SWRCH18A,- 4 6003-000269 SCREW-TAPTYPE;BH,+,-,S,M3,L6,ZPC(WHT),SWRCH18A,- 8 MAIN LINE 6003-000282 SCREW-TAPTYPE;BH,+,-,B,M3,L8,ZPC(BLK),SWRCH18A,- 2 Service Manual 3-2 Samsung
  • Samsung ML-1665 | Service Manual - Page 40
    Disassembly and Reassembly 3.3 Cover 3.3.1 Left/Right cover 1. Take off the left cover by removing hooks from its edge. 2. Take off the right cover by removing hooks from its edge. 3.3.2 Rear bracket 1. Remove 4 screws. Release the rear bracket. Service Manual 3-3 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 41
    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 Service Manual Front cover 3-4 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 42
    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 3-5 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 43
    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 3-6 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 44
    Disassembly and Reassembly 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 3-7 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 45
    ) 2. Remove 4 screw securing the COVER-LSU. Release the COVER-LSU. COVER-LSU CCOOVVEERR-L-LSSUU Top view TTooppvvieieww Front view FFrroonnttvvieieww 3. Remove 3 screws. Release the LSU. Service Manual 3-8 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 46
    Disassembly and Reassembly 3.8 Drive unit 1. Remove the left cover. 2. Remove 4 screws. Release the drive unit. Service Manual 3-9 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 47
    -frame bracket. Caution When reassembling the drive unit, put down the drive unit and assemble the left-frame bracket. 3. Remove 2 screws. Release the step motor. Service Manual 3-10 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 48
    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. Service Manual 3-11 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 49
    and Troubleshooting 4.1 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, Jam removing method, and so on. It includes the contents of manual. 4.1.1 Control Panel The ML-1660
  • Samsung ML-1665 | Service Manual - Page 50
    cartridge lifea of toner is close. 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 4-2 Samsung
  • Samsung ML-1665 | Service Manual - Page 51
    Alignment and Troubleshooting 4.1.3 JAM Removal 4.1.3.1 Clearing Paper Jams If a paper jam occurs, the LED on the control 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 4-3 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 52
    Troubleshooting 5. Remove the original jammed paper by gently pulling it straight out. 7. Remove the original jammed paper by gently pulling it straight out. If you do not see the jammed paper, go to next step. 6. Pull the toner cartridge out. 8. Replace the toner cartridge. Service Manual
  • Samsung ML-1665 | Service Manual - Page 53
    and Troubleshooting 4.1.4 Printing a report This product provides several printable reports for maintenance purposes. These reports can be used to aid the diagnosis of print quality problems. By 10 seconds until the green LED blinks rapidly, and release. Service Manual 4-5 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 54
    ■ Demo Page Alignment and Troubleshooting Service Manual 4-6 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 55
    Alignment and Troubleshooting ■ Supplies Information Report Service Manual 4-7 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 56
    Alignment and Troubleshooting 4.1.5 Periodic Defective Image If an image defects appears at regular intervals Toner Cartridge Transfer roller Fuser 1 2 3 5 4 6 7 1 Pressure roller 2 Heat roller 3 Charge roller 4 OPC Service Manual 5 Transfer roller 6 Deve roller 7 Supply roller 4-8 Samsung
  • Samsung ML-1665 | Service Manual - Page 57
    and Troubleshooting 4.1.6 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 4-9 Samsung
  • Samsung ML-1665 | Service Manual - Page 58
    status bar (in Mac OS X). Windows Macintosh Linux Double-click this icon in Windows. Click this icon in Mac OS X. Click this icon in Linux. 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
  • Samsung ML-1665 | Service Manual - Page 59
    (in Mac OS X) the Smart Panel icon and select Troubleshooting 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. Service Manual 4-11 Samsung
  • Samsung ML-1665 | Service Manual - Page 60
    Troubleshooting 4.2 Troubleshooting 4.2.1 Procedure of Checking the Symptoms Before attempting to repair the printer first obtain a detailed description of the problem jammed paper. See the troubleshooting flow chart. Refer to "Solution of Image Problem" Service Manual 4-12 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 61
    . • Is there are a Print Quality Problem? --> 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 Service Manual 4-13 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 62
    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. Service Manual 4-14 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 63
    Alignment and Troubleshooting 4.2.2 Bad discharge 1) JAM 0 Description : 1 . Paper is not exited from the cassette. 2. Jam-0 occurs if the paper feeds into the printer. 1. Check the Solenoid. with IPA(Isopropyl Alcohol) or replace the pick up roller. Service Manual 4-15 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 64
    Alignment and Troubleshooting 2) JAM 1 Description : 1 . Recording paper is jammed in front of or inside the fuser. 2. Recording paper is stuck , Feed Actuator may be defective. Reassemble the Actuator-Feed and Spring-Actuator if the returning is bad. Service Manual 4-16 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 65
    Alignment and Troubleshooting 3) Multi-Feeding Description : M ultiple sheets of paper are fed at once. 1. Solenoid malfunction (the solenoid does with foreign matter.(oil...) Clean the pad friction with soft clothe dampened with IPA (Isopropyl Alcohol). Service Manual 4-17 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 66
    Alignment and Troubleshooting 4) Paper rolled on the OPC Drum Description : P aper is rolled up in the OPC. 1. Paper is too much thin. 2. The to remove the rolled in the OPC Drum. - Remove the paper while turning the OPC Drum against the ongoing direction. Service Manual 4-18 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 67
    Alignment and Troubleshooting 4.2.3 Malfunction 1) Paper Empty Description : T he paper lamp on the operator panel is on PBA is connected properly. Replace the defective actuator. Reconnect the connector. If the problem persist, replace the sensor PBA. Service Manual 4-19 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 68
    Description : T he ERROR lamp does not come on even when the printer cover is open 1. Check the connector and circuit of the cover switch department in the SMPS board. 1. Check the insertion of the Cover Open S/W Connect. 2. Replace the SMPS/HVPS board. Service Manual 4-20 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 69
    is not driving when printing, and paper does not feed into the printer, resulting 'Jam 0'. 1. Motor harness may be defective. Check the motor harness, replace it, if defective. 2. Check the motor operation. Replace the Motor or Drive unit, if necessary. Service Manual 4-21 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 70
    is turned on, all lamps on the operator panel do not come on. 1. Check if the flat cable between the main board and HVPS/SMPS board is connected correctly. 2. Check if the HVPS/SMPS output is normal. Reconnect the flat cable. Replace the HVPS/SMPS board. Service Manual 4-22 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 71
    Alignment and Troubleshooting 5) Vertical Line Getting Curved Description : W hen printing, vertical line gets curved. 1. If the supply of +24v is unstable in the Main board linking with LSU. 1. Replace LSU. 2. Replace the Main board. Service Manual 4-23 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 72
    in the toner cartridge, replace the toner cartridge and try to print out. 2. Scratched surface of the charge roller in the toner cartridge. Replace the transfer roller if occurred as No. 3. 3. Partly depression or deformation on the surface of the transfer roller. Service Manual 4-24 Samsung
  • Samsung ML-1665 | Service Manual - Page 73
    on the OPC Drum. No. 4. : Open the front cover and check ribs that corresponds to the position of the voids. Remove if found. If the problems are not solved, replace the toner cartridge. Service Manual 4-25 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 74
    Alignment and Troubleshooting 3) Horizontal Black Band Description voltage terminal of the Charge, Supply, Develop and Transfer roller.(remove the toner particles and paper particles) 2. The rollers of developer may be stained. , replace the developer. Service Manual 4-26 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 75
    Alignment and Troubleshooting 4) Black/White Spot Description : 1 . Dark or blurry spots 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 4-27 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 76
    the one in the set. 3. Abnormal output from the HVPS. Wait 30 minutes after printer is powered on before you start printing. 1. Clean up the contaminated area by the toner. 2. Replace the HVPS if the problems are not solved by the above four directions. Service Manual 4-28 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 77
    Alignment and Troubleshooting 6) Dark Image or a Black Page Description : The printed image is dark. 1. No charge voltage in the engine board. which connects the engine board and HVPS. 2. Replace the HVPS if not solved by the above direction 1 and 2. Service Manual 4-29 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 78
    . 4. Is the movement(Up and Down) of the transfer roller smooth? Clean the bushing part of the transfer roller. 5. Is the HVPS normal? If the problem is still not solved, replace the developer. Service Manual 4-30 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 79
    and Troubleshooting 8) Ghost (1) Description : Ghost occurs at 62.9 mm intervals of the OPC drum in the whole printing. 62.9mm 1. Bad contacts caused by contamination from toner particles (below 10℃). Wait about 1 hour after power on before using printer. Service Manual 4-31 Samsung Electronics
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    and Troubleshooting 9) Ghost (2) Description : G host occurs at 62.9 mm intervals of the OPC drum in the whole printing. (When printing on card stock or transparencies using manual feeder) after using returning to the original mode is recommended. Service Manual 4-32 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 81
    2. The abnormal voltage and bad contact of the terminal of the supply roller Occur in the developer cartridge, replace the developer and try to print out. Check the approved voltage of the supply roller and contact of the terminal and adjust if necessary. Service Manual 4-33 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 82
    at 47 mm intervals. 47mm The temperature of the fuser is maintained high. Disassemble the fuser and remove the contaminated toner particles on the roller and clean the foreign matter between Thermistor and Heat rolle. r ( Caution : can be deformed) Service Manual 4-34 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 83
    Alignment and Troubleshooting 12) Stains on the Face of Page Description : T he background on the face of the printed page is stained. 1. Toner leakage due to improperly sealed develope.r Replace the toner cartridge. Service Manual 4-35 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 84
    Alignment and Troubleshooting 13) Stains on Back of Page Description : The back of the page is stained at 39.2 mm intervals. 1. P/R (Pressure roller).And check the area between H/R and Thermistor. If contaminated, clean the area not to be deformed. Service Manual 4-36 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 85
    Alignment and Troubleshooting 14) Blank Page Print out (1) Description : Blank page is printed. Bad ground contacts in OPC and/or develope. r Remove contamination of the terminals of the developer and the unit. Service Manual 4-37 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 86
    SMART PANEL:End of life, Replace with new toner cartridge SMART PANEL:End of life, Replace with new toner cartridge SMART PANEL:Toner cartridge is not installed. Install the cartridge. SMART PANEL:Toner cartridge is not compatible. Check users guide SMART PANEL:Paper jam in tray 1. SMART PANEL
  • Samsung ML-1665 | Service Manual - 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 2
  • Samsung ML-1665 | Service Manual - 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 3 Samsung Eletronics
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    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 4 Samsung Eletronics
  • Samsung ML-1665 | Service Manual - Page 90
    • Code:C1-1110 • 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 5
  • Samsung ML-1665 | Service Manual - Page 91
    Error message: 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 6
  • Samsung ML-1665 | Service Manual - 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 7
  • Samsung ML-1665 | Service Manual - 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 8
  • Samsung ML-1665 | Service Manual - Page 94
    the cartridge. • Symptom/Cause: 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
  • Samsung ML-1665 | Service Manual - 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 10
  • Samsung ML-1665 | Service Manual - 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 11
  • Samsung ML-1665 | Service Manual - Page 97
    the feed1 sensor within normal time after picking up it from the tray.) • Trouble Shooting Method: 1. Remove all papers on the tray. Remove the jammed paper from 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
  • Samsung ML-1665 | Service Manual - Page 98
    • Code:M2-1211 • Error message: SMART PANEL: • Symptom/Cause: 1. Paper has jammed. (In case that the printer has turned on after turned it off for printing job or pick-up.) • Trouble Shooting Method: 1. Open the top cover. Check if the paper has jammed. If there is the jammed paper, remove it. 2. If
  • Samsung ML-1665 | Service Manual - Page 99
    :Door is open. Close it. • Symptom/Cause: 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 ML-1665 | Service Manual - Page 100
    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 15
  • Samsung ML-1665 | Service Manual - 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 16 Samsung Eletronics
  • Samsung ML-1665 | Service Manual - 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 17 Samsung Eletronics
  • Samsung ML-1665 | Service Manual - Page 103
    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 18
  • Samsung ML-1665 | Service Manual - 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 19 Samsung Eletronics
  • Samsung ML-1665 | Service Manual - 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 20 Samsung Eletronics
  • Samsung ML-1665 | Service Manual - Page 106
    off then on. • Symptom/Cause: 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 21
  • Samsung ML-1665 | Service Manual - Page 107
    off then on. • Symptom/Cause: 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 22
  • Samsung ML-1665 | Service Manual - Page 108
    5-1 Samsung Electronics Service Manual Soft POWER Tact Switch CANCEL Tact Switch Error Ready JAM Motor Controller IC MAIN Controller Jupiter4E Core : 150MHz ARM940T-32bit RISC Clock Generator CLK 12MHz RESET IC USB Device THERMISTOR 2P 4P 2P MT STEP Main Motor SOL PickUp Clutch 5P
  • Samsung ML-1665 | Service Manual - Page 109
    5-2 Samsung Electronics Service Manual 1 2 Soft POWER CANCEL 3 Tact Switch Tact Switch TOP Cover 4 5 Error Ready JAM Micro Switch 6 7 8 9 10 11 12 CN3 13 14 15 16 17 18 19
  • Samsung ML-1665 | Service Manual - Page 110
    manual, and a guide to the location space required when installing the printer. A definition of test pages and Wireless Network information definition is also included. 6.1 Tool for Troubleshooting The following tools are recommended safe and easy troubleshooting as described in this service manual
  • Samsung ML-1665 | Service Manual - Page 111
    Protocols (LPR is a TCP-based protocol) LSU Laser Scanning Unit LUI Local User Interface MCBF Mean Copy Between Failure MDSP Multiple Document Single Printout MFP Multi-Functional Product MH Modified Huffman (a kind of image data coding method) Service Manual 6-2 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 112
    Level-3 PVC Printing Video Controller in the SPGPm(Graphic Processor for Printer) QCD Quality, Cost, and Delivery RCP Remote Control Panel RT-OS NSDR) XCMI Samsung's Management Information Base WA Warranty Action W x D x H Width x Depth x Height Service Manual 6-3 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 113
    Samsung Halk printer) MEC-CASSETTE ASS'Y(LETTER) MEC = Mechanic Combined unit COVER-M-FRONT M=Mold MPR-NAME/PLATE MPR= Machinery Press, UNIT-LSU LSU =Laser Current CBF POWER STITCH GRAY CBF= Cable Form MEA UNIT GUIDE CST PA ASS'Y CST=Cassette(Paper Service Manual 6-4 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 114
    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 6-5 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 115
    (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 HARNESS-MAIN-MHV WIRE MHV= High Voltage(Charge Voltage) Service Manual 6-6 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 116
    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 6-7 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 117
    used in the factory. 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 6-8 Samsung Electronics
  • Samsung ML-1665 | Service Manual - Page 118
    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 6-9 Samsung Electronics
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Service Manual
Laser Printer
ML-
1660
/1665
1. Speed
• Up to 16 ppm in A4 (17 ppm in Letter)
2. Processor
• Jupiter4e 150 MHz
3. Printer Language
• GDI
4. Memory
• 8 MB
5. Interfaces
• Compatible with USB 2.0
6. Toner cartridge
• Initial : 0.7K
• Sales : 1.5K
The keynote of Product