Samsung CLP-770ND Service Manual
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Samsung CLP-770ND Service Manual

Color laser printer
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■ Speed : 32 / 32 ppm (A4)
■ Resolution : up to 9600 X 600 dpi effective output.
■ 7K/7K Black/Color toner
(Initial : 3.5K/3.5K)
■ Machine Life : 300K or 5 Years
■ Paper handling
: Maximum 1,600 Sheets Paper Capacity
: 500sh cassette, 500sh SCF x 2 EA
: 100 MP
Service Manual
Color Laser Printer
CLP-770ND
■ 80 GB HDD (Option)
■ Memory : 256 MB (Max. 768 MB)
■ Duplex printing
■ N/W, USB 2.0, EDI, Wireless option
■ 4 Line LCD

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Summary of Contents for Samsung CLP-770ND

  • Page 1 Service Manual Color Laser Printer CLP-770ND ■ Speed : 32 / 32 ppm (A4) ■ 80 GB HDD (Option) ■ Resolution : up to 9600 X 600 dpi effective output. ■ Memory : 256 MB (Max. 768 MB) ■ 7K/7K Black/Color toner ■...
  • 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. March. 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 1.3 ESD Precautions ………………………………………………… 1-5 chapter 2 Product Overview 2.1 Product Summary ………………………………………………… 2-1 2.2 Sepcifications …………………………………………………… 2-2 2.2.1 General Print Engine ……………………………………… 2-2 2.2.2 Controller & S/W …………………………………………… 2-3 2.2.3 Paper Handling ………………………………………………...
  • Page 4 Contents chapter 3 Maintenance and Disassembly 3.1 Precautions when replacing parts ……………………………… 3-1 3.1.1 Precautions when assembling and disassembling ……… 3-1 3.1.2 Preautions when handling PBA …………………………… 3-1 3.1.3 Releasing Plastic Latches ………………………………… 3-1 3.2 Replacing a Maintenance Parts ……………………………… 3-2 3.2.1 Fuser Unit ……………………………………………………...
  • Page 5 Contents chapter 5 System Diagram 5.1 Main PBA (SPGPXm) Block Diagram ………………………… 5-1 5.2 OPE PANEL Block Diagram …………………………………… 5-2 5.3 Connection Diagram……………………………………………… 5-3 chapter 6 Reference Information 6.1 Tools for Troubleshooting ……………………………………… 6-1 6.2 Acronyms and Abbreviations …………………………………… 6-2 6.3 Select a location for the printer …………………………………...

  • Page 6: Safety Warning

    High voltages and lasers inside this product are dangerous. This printer should only be serviced by a suitably trained and qualified service engineer. (2) Use only Samsung replacement parts There are no user serviceable parts inside the printer. Do not make any unauthorized changes or additions to the printer, these could cause the printer to malfunction and create electric shock or fire haz- ards.

  • 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 lightening storms. Samsung recommend 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 1.2.4 Assembly / Disassembly Precautions Replace parts carefully, 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 - The equipment shall be installed near the socket outlet and shall be accessible. - Be sure to fix and plug in the power cable securely after the installation so that no one trips over it. Service Manual Samsung Electronics...

  • 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. Service Manual Samsung Electronics...

  • Page 11: Product Summary

    : 500sh cassette, 500sh SCF x 2 EA : 100 MP ■ 80 GB HDD (Option) ■ Memory : 256 MB (Max. 768 MB) ■ Duplex printing ■ N/W, USB 2.0, EDI, Wireless option ■ 4 Line LCD Service Manual Samsung Electronics...

  • Page 12: Sepcifications

    Normal : up to 2,400 x 600 dpi Draft : up to 600 x 600 dpi ■ PostScript 3 Best : up to 9,600 x 600 effective output Normal : up to 1,200 x 600 dpi Draft : up to 600x600 dpi Service Manual Samsung Electronics...

  • Page 13: Controller & S/W

    Mac OS 10.3~10.5 - TCP/IP Only Various Linux OS including Red Hat 8.0~9.0, Fedora Core 1~4, Mandrake 9.2~10.1, and SuSE 8.2~9.2 HP-UX, Solaris, SunOS, SCO UNIX User Interface LCD & Button 4 Line LCD 1 LED for status (Green/Red) Service Manual Samsung Electronics...

  • Page 14: Paper Handling

    Indicator Sensing Empty sensing Output Stacking Capacity 250 sheets @ 80g/㎡ Output Full sensing Duplex Supporting Std. Throughput Media sizes A4, Letter, Legal, Oficio, Folio Media types Palin paper only Media weight 16~32lb (60 to 120g/㎡) Service Manual Samsung Electronics...

  • Page 15: Reliability & Service

    Configuration Sheet Menu Map Sheet Demo Sheet Comm. Mode USB & NW Operation TBD(Status report F/W reset/writing NV-RAM operation Record tracking Administration alert) Temperature Operating 15~32.5 ℃ (50~90.5℉) Storage -20~40℃ (-4~104℉ ) Humidity Operating 10~80%RH Storage 0~90%RH Service Manual Samsung Electronics...

  • Page 16: Environment

    30 kg ( 66.14 lbs) 2.2.6 Packing & Accessory In-Box Machine Initial Toner cartridge (CMYK : 3.5K) Power cord USB cable (China, Korea, CIS, India, XSS) Set-up CD QIG(Quick installation Guide sheet) Warranty book Manual Book: Domestic/Turkey Only Service Manual Samsung Electronics...

  • Page 17: Consumables

    ** Albania, Austria, Belgium, Bosnia, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Italy, Macedonia, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, UK. ■ FRU Item Part_Code Life Fuser JC96-05454A(110V) 100K JC96-05455A (220V) Pick-up Roller JC90-00932A 100K Friction Pad(CST) JC97-03467A 100K Service Manual Samsung Electronics...
  • Page 18 Jscribe Enabler Kit SCX-KIT10J Wireless LAN* ML-NWA30L Hard Disk ML-HDK420 80GB Stand ML-DSK20S * Depending on your country, wireless LAN cards may not be available. Contact your local Samsung dealer or the retailer where you bought your printer. Service Manual Samsung Electronics...

  • Page 19: Model Comparison Table

    Product spec and feature 2.3 Model Comparison Table ■ Samsung Model Dali (CLP- 660ND) Cezanne (CLP- 770ND) Image Speed (A4) 24/24 ppm (A4) 32/32 ppm (A4) Resolution 2,400 x 600 dpi up to 9600 X 600 dpi effective output. Emulation...
  • Page 20 500 SCF x 2 Capacity (Max. 930 sh) (Max. 2,200 sh) (Max. 1,150 sh) (Max. 1,600 sh) 6K/6K Toner 3.5K/ 7K 6K/5K 6.8K/3.4K 10K/10K Max. Duty 120,000 60,000 85,000 120,000 HDD option HDD option HDD option HDD option 2-10 Service Manual Samsung Electronics...

  • Page 21: Product Configuration

    Front cover Paper level indicator Control panel Optional tray Multi-purpose tray paper width guides Tray 1 Toner cartridge Multi-purpose tray Paper transfer belt a.The symbol a is a mark for the optional device. Multi-purpose tray handle 2-11 Service Manual Samsung Electronics...
  • Page 22 Control board cover USB port Power receptacle External device interface (EDI) Power-switch IEEE 802.11 b/g Wireless LAN a. External device interface for Samsung and third party Handle solutions. Network port b.The symbol a is a mark for the optional device. 2-12...
  • Page 23 LSU Unit Exit Roller Toner (K) OPE Unit Toner (C) Fuser Unit PTB Unit Toner (M) Toner (Y) Main PBA CASSETTE Unit SMPS PBA SCF Unit (Optional Tray) FDB (Fuser Drive Board) PBA Pick up Roller 2-13 Service Manual Samsung Electronics...
  • Page 24 Cassette Feed Cassette Feed Cassette Feed Cassette Feed MP Feed MP Feed MP Feed MP Feed MP Feed MP Feed SCF1 Feed SCF1 Feed SCF1 Feed SCF1 Feed SCF2 Feed SCF2 Feed SCF2 Feed SCF2 Feed 2-14 Service Manual Samsung Electronics...

  • Page 25: Main Pba

    Product spec and feature 2.4.1 Main PBA The CLP-770ND system controller consists of a main controller and an engine controller in one-board. The main controller uses a ARMS core chip as main processors, which are dedicated for printing several internal operating blocks through system programs stored in Flash Memory.
  • Page 26 Product spec and feature 1) Main PBA (SPGPV4) Block Diagram 2-16 Service Manual Samsung Electronics...
  • Page 27 • Memory Interface > ROM - Nor Flash used (32MB) - Interface With SPGPXV4 ROM Controller > SDRAM - Size : CLP-770ND(DDR2) : Default 256MB (Option 256MB/512MB) > EEPROM - Size : 512kb - Interface With SPGPV4 I2C Controller > CRUM - Size : 256Byte - Interface With LPEC3I2C Controller via Deve Crum IF B’D...
  • Page 28 24V2 relay clutch Dev K 24V2 CST Pick UP REGI Clutch LSU_MOTOR 5VLSU LSU LD,BD 3.3V nPower_OFF OPC BLDC 3.3V_CRUM DEV CRUM LPEC3 24V3 nCRUM_Power drawer 24V_ENABLE 24V2 24V1 5V_SMPS 24V3 ACR sensor SMPS Type5 2-18 Service Manual Samsung Electronics...

  • Page 29: Smps Board

    INPUT_24V_Control (from Main PBA) SPECIFICATION General Input/Output Voltage 1) AC 110V (90V ~ 135V) 2) AC 220V (180V ~ 270V) 3) Output Power: 192W / Max. 270W DC 5V: 24W ~ 30W DC 24V: 168W ~ 240W 2-19 Service Manual Samsung Electronics...
  • Page 30 24V Ground Power +24V3 24V Ground Power +24V3 24V Ground 5V Ground 5V Ground Power +5V1 5V Ground Power +5V1 +5V1 Power 5V Ground 5V Ground Power +5V2 +5V2 Power Signal Signal Standby reserved (reserved) 2-20 Service Manual Samsung Electronics...

  • Page 31: Hvps Board

    T R ANSFER CHAR GER S UPPLY AT TR ■ Connection PANEL Feed, CST empty sensor EXIT SENSOR MP solenoid, MP empty, CST detect 24V SWITCH Fuser bias HVPS1(from mainboard) Paper size HVPS2(from mainboard) Regi sensor 2-21 Service Manual Samsung Electronics...
  • Page 32 - Individual T1 channels for each color. - AC + DC deve high voltage. - 1Chanel charger output to each 4 color’s port. - All output channels can be adjusted by using volume control components. 2-22 Service Manual Samsung Electronics...

  • Page 33: Hvps_Sub Board

    2) MHV DC_M,C,K Item Specification Condition Rated output voltage -1300V±3% Rated input , 30㏁ Input Output RIPPLE & NOISE Less than 50Vp-p Rated input , 30㏁ Input Output voltage SETTING -1300V Rated input , 30㏁ Input 2-23 Service Manual Samsung Electronics...

  • Page 34: Fuser Drive Board

    SMPS AC ( to SMPS) ■ Specification Input Voltage AC 110V AC 220V (Range) (90 ~ 135V) (180 ~ 270V) Input Current Output Power Max. 1500W Max. 1500W Phase Detect Not support Protection Relay Control Signal 2-24 Service Manual Samsung Electronics...

  • Page 35: Ope Board

    The OP PBA controls the 4 Line Graphic LCD(128 x 64 Dots) unit, and communicates with Main PBA through UART. The OP PBA includes an 8-Bit CMOS Micom(S3F828B) and a Power Key. With the OPE Power Key, user can turn on & off the set(CLP-770ND). Micom(S3F828B)

  • Page 36: Feeding Section

    2) SCF (Second Cassette Feeder, 2nd / 3rd tray) This is the option unit of CLP-770ND. This additionally stores and automatically feeds printing paper. Its function is the same as the Cassette (1st tray). This SCF can be installed until Max. 2 ea.

  • Page 37: Lsu ( Laser Scanning Unit )

    LD(Laser Diode) Protector panel Trouble Failure Analysis Polygon Motor Error The Rotation of Polygon Motor can not reach stable Hsync Error Though the rotation of Polygon Motor reach stable, the signal of Hsync is not occurred 2-27 Service Manual Samsung Electronics...

  • Page 38: Fuser Unit

    A pressure roller mounted under a Fuser roller is made of a silicon resin, and the surface also is coated with Teflon. When a paper passes between a Fuser roller and a pressure roller, toner adheres to the surface of a paper permanently. 2-28 Service Manual Samsung Electronics...

  • Page 39: Ptb(Paper Transfer Belt) Unit

    These motors drive the PTB unit, fuser unit, feeder unit, exit unit, etc. BLDC Motor For fuser unit BLDC Motor For OPC Drive unit BLDC Motor For DEVE Drive unit Step Motor For feed drive unit 2-29 Service Manual Samsung Electronics...

  • Page 40: Sensors

    ③ Exit Sensor :Check paper position on Fuser ④ Paper Empty Sensor :Check Paper empty on a cassette ⑤ Cassette Detect :Check cassette insertion ⑥ Paper Feed Sensor : Check paper position ⑦ MPF Empty Sensor :Check paper empty on MPF 2-30 Service Manual Samsung Electronics...
  • Page 41 Product spec and feature Sensor ( Expansion) CASSETTE_DETECT SENS_ACR PAPER_EMPTY THERMOSTAT SENS_FEED CRUM_DEVE_Y(M/C/K) SENS_REGI CRUM_PTB SENS_PAPER_EXIT PAPER_SIZE1(2/3) OUTBIN_FULL INNER_TEMP MP_EMPTY SENS_HUMIDITY OUT_TEMP CLUTCH_FEED SOL__PICKUP 2-31 Service Manual Samsung Electronics...

  • Page 42: 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 43: Replacing A Maintenance Parts

    The fuser is very hot. So turn the printer off and wait until the printer to cool before replacing it. 3.2.2 Pick up roller 1. Remove the Cassette Unit. 2. Pull the pick up roller to the direction of arrow. Service Manual Samsung Electronics...

  • Page 44: General Disassembly

    MEA COVER-NOISE MEA COVER-NOISE MEA COVER-NOISE MEA COVER-NOISE MEA COVER-NOISE 2. Open the front cover. And remove 2 screws. 4. Unlatch the 5 hooks from the bottom before remove the side cover. And remove the right/left cover. Service Manual Samsung Electronics...
  • Page 45 Disassembly and Reassembly 5. Release the rear cover after remove 7 screws. 7. Remove 6 screws. 8. Lift the top cover up. Unplug 2 connectors. 6. Remove 4 screws from both side. Service Manual Samsung Electronics...
  • Page 46 9. Remove the left/right link. 11. Remove the Bracket hinge with any tool after remove one screw. 10. Remove 4 screws from both side. 12. Remove the Damper hinge. (2 EA) And release the front cover. Service Manual Samsung Electronics...

  • Page 47: Front Cover Unit

    Caution : When reassembling, be careful the shaft head direction. 2. For the opposite side, remove 2 screws and the shaft. 4. Release the Front cover unit. Caution : When reassembling, be careful the shaft head direction. Service Manual Samsung Electronics...

  • Page 48: Ope Unit

    Disassembly and Reassembly 3.3.3 OPE Unit -Before disassembling the OPE unit, remove the Top cover. 1. Remove 2 screws from both side. 2. Remove 2 screws. Service Manual Samsung Electronics...

  • Page 49: Hvps Board

    1. Unplug 9 connectors from the tup/bottom of the HVPS board. 2. Remove 8 screws and unlatch 4 hooks after remove left side cover Caution : Be careful when you take out the HVPS so that the 16 high voltage terminals behind HVPS are not damaged Service Manual Samsung Electronics...

  • Page 50: Main Pba

    2. Remove 4 screws and release the Main PBA. 3.3.6 SMPS Board - Before disassembling the SMPS board, remove the cover unit. 1. Unplug the harness from the SMPS board. 2. Remove 4 screws and release the SMPS board. Service Manual Samsung Electronics...

  • Page 53: Solenoid And Clutch-Feed

    CAP –PICK UP GEAR SOLENOID -PICK_UP SOLENOID -PICK_UP 2. Remove the MEA-GEAR PICK UP. MEA - GEAR PICK UP MEA - GEAR PICK UP CLUTCH - FEED CLUTCH - FEED SOLENOID -PICK_UP SOLENOID -PICK_UP SOLENOID -PICK_UP SOLENOID -PICK_UP 3-12 Service Manual Samsung Electronics...

  • Page 54: Alignment & Troubleshooting

    Sends the machine into power saver mode. You can also turn the (Power) power on and off with this button. Status LED Shows the status of your machine. Service Manual Samsung Electronics...

  • Page 55: Understanding The Status Led

    Check the display message. When the problem is cleared, the machine resumes. • The toner cartridge is near the end of its life. Order a new toner cartridge. You can temporarily improve print quality by redistributing the toner. Service Manual Samsung Electronics...

  • Page 56: Menu Overview

    - Color : This menu allow you to adjust the color setting. - Network : This menu allow you to configure the network interface. - Job Management : This menu shows the status for printing jobs. Service Manual Samsung Electronics...
  • Page 57 Toner worn occurs. MP Tray / [Tray<x>] Paper Size Paper Type Paper Source Graphic Graphic Tray 1 Tray 2 Resolution Tray 3 Draft MP Tray Normal Manual Feeder Best Auto Fine Edge Tray Confirm Darken text Screen Service Manual Samsung Electronics...
  • Page 58 DHCPv6 Off Wireless(for only WLAN Setting Wizard * Search List WLAN Security wireless model) TestSSID List Authentication WPA Key Error Custom Edit SSID Operation Mode WLAN Default Restore WLAN Signal Excellent Clear Settings Network Info. Printing… Service Manual Samsung Electronics...
  • Page 59 3. Press up/down arrow to highlight Auto Color Reg. and press OK. 4. The display shows Run Now? ◀Yes▶/ ◀No▶ , then select yes or no. And press the OK to conduct the Auto Color Registration. Service Manual Samsung Electronics...

  • Page 60: Tech Mode

    LCD briefly displays ‘Tech Mode’, the machine has entered service tech mode. After entering the tech mode, select the item you want by using a button on control panel. Below picutre shows to select the motor color opc item in Test Routine. Service Manual Samsung Electronics...
  • Page 61 X Offset Center Y [-5~5] 0* X Offset Center M [-5~5] 0* X Offset Center C [-5~5] 0* X Offset Right Y [-5~5] 0* X Offset Right M [-5~5] 0* X Offset Right C [-5~5] 0* Regi Pattern Printing… Service Manual Samsung Electronics...
  • Page 62 Set up the Magenta Dev PP control duty Adjustment of image resolution 0060-Deve VPP C [-25~25] 0* Set up the Cyan Dev PP control duty 0070-Deve VPP K [-25~25] 0* Set up the Black Dev PP control duty Service Manual Samsung Electronics...
  • Page 63 The Condition for New Crum of ACR On/Off (On 1, Off 0) 0040-ACR Page Cnt [0~1] 1* The Condition for Page Count of ACR On/Off (On 1, Off 0) 0050-Fuser Motor [-10~10] 0* The Fuser Motor Speed Offset for Regi. Speed 4-10 Service Manual Samsung Electronics...
  • Page 64 Detects when paper is in Bypass Tray(MP Tray). 0290-Feed Sensor Detect when a paper is at Feed sensor. 0360-Regi Sens Detect when a paper is at Regi. sensor. 0370-Exit Sens Detect when a paper is at Exit. sensor. 4-11 Service Manual Samsung Electronics...
  • Page 65 0090-LD Power 2 LSU LD2 enable On/Off (magenta) 0100-LD Power 3 LSU LD3 enable On/Off (cyan) 0110-LD Power 4 LSU LD4 enable On/Off (black) 112-ACR 0010-Manu Regi Clear Clear Manual Offset Value of Color Regi. 4-12 Service Manual Samsung Electronics...

  • Page 66: Firmware Upgrade

    4) Download ROM file form PC to MACHINE via usblist2.exe Wait Image . . . Wait Image . . . Firmware Upgrade Firmware Upgrade Firmware Upgrade Progress 50% Progress 50% Progress 50% Do NOT Power Off Do NOT Power Off Do NOT Power Off 4-13 Service Manual Samsung Electronics...
  • Page 67 To use below method, SWAS program is installed in PC. Start the SWAS program. (Windows Start menu > Programs > Samsung Netowork Printer Utilities > SyncThru Web Admin Service) 1. Firmware Upgrade → Upgrade (check device using IP address) 2. Maintenance → Firmware upload (register firmware)
  • Page 68 Alignment & Troubleshooting 3. Maintenance → Firmware Upload (upload firmware) 4. Maintenance → Firmware Upload (confirm uploaded firmware) 4-15 Service Manual Samsung Electronics...
  • Page 69 Alignment & Troubleshooting 5. Maintenance → Firmware Upgrade → Upgrade (choose firmware) 6. Maintenance → Firmware Upgrade → Upgrade (choose firmware) 4-16 Service Manual Samsung Electronics...
  • Page 70 Alignment & Troubleshooting 7. Maintenance → Firmware Upgrade → Upgrade 8. Maintenance → Firmware Upgrade → Upgrade (Done) 4-17 Service Manual Samsung Electronics...
  • Page 71 1. Start a web browser such as Internet Explorer, Safari or Firefox and enter your machine’s new IP address in the browser window. For example, 2. When the SyncThru™ Web Service window opens, click Maintenance, Then, click “Find” and selet a firmware file. 3. Click “Upgrade” 4-18 Service Manual Samsung Electronics...

  • Page 72: Troubleshooting

    - Main PBA error - LCD Panel error Refer to Indicate Ready or Error Massage Error Massage Power save < Chapter 4.2.2 > Test Print printing Refer to "Solution Quality is of 4.2.4 Print Quality" Nomal? 4-19 Service Manual Samsung Electronics...

  • Page 73: Display Meassage Troubleshooting

    4. If the pick up roller rotates but the paper is not feeding, replace the Clutch-Feed(JC47-00023A). 5. Reconnect connector of CN4,5,9 on HVPS. 6. Reconnect connector of CN1,2 on HVPS and check the flat cable. 4-20 Service Manual Samsung Electronics...
  • Page 74 3. If the problem persists, replace the Main-PBA. Error: #02-000 3. Abnormal Thermistor value has 4. Check the thermistor Tension of the Fuser. Turn off then on occured. (by FSA regulation / thermistor open/ thermistor short) 4-21 Service Manual Samsung Electronics...
  • Page 75 After LD on, the Laser beam detect signal 1. Replace the Main board. LSU error is not occurred or irregular. 2. If the problem persists after replacing the Main board, replace the LSU unit. Error: #04-001,4,7,10 Turn off then on 4-22 Service Manual Samsung Electronics...
  • Page 76 3. Check the connector, harness of the DEVE CRUM IF not installed. Install it PBA. The toner cartridge you have installed is 1. Check the samsung-genuine toner cartridge is installed [O] Not Compatible not for your machine. or not. 2. Check the CN24 connector on Main-PBA.
  • Page 77 - Outer Temp.Short error occurs when sensor Failure #10- Outer Temperature sensor value is under the minimum. Turn off then on - Outer Temp.Open error occurs when Outer Temperature sensor value is over the maximum. 4-24 Service Manual Samsung Electronics...
  • Page 78 There is no corresponding paper in the 1. Check the CN10 connector on HVPS. Paper mismatch Tray2 tray2. 2. Check the shape of the paper size switch in cassette. Load [A4] [Plain] Continue ⊙ Cancel X 4-25 Service Manual Samsung Electronics...
  • Page 79 Load the paper in Tray2 Paper Empty in tray2 Paper is empty in tray2. Load paper The tray2 cassette is not installed Reinstall the Tray2 cassette. Tray2 cassette Out properly. Tray2 cassette is pulled out. Insert it properly 4-26 Service Manual Samsung Electronics...
  • Page 80 TR belt Not Installed Transfer belt unit is not installed. Install it The transfer belt of the machine is not for Check the samsung-genuine PTB is installed. TR. belt Not your machine If or not, replace the new PTB unit.
  • Page 81 The life of the corresponding pick up Check the pick up roller life. If the life is expired, replace it. Pickup roller is worn roller has expired. MP/Tray/Tray2/Tray3 pickup roller is worn. Replace with new one 4-28 Service Manual Samsung Electronics...

  • Page 82: Feeding Problems And Solutions

    Jam 0 Jam 0 Jam 0 Jam type Displayed error message JAM0 Paper Jam in tray1 JAM1 Jam inside machine JAM2 Jam in exit area Jam bottom of duplex Duplex JAM Jam top of duplex 4-29 Service Manual Samsung Electronics...
  • Page 83 2. Carefully remove the paper by pulling in the direction as shown below. 6. Insert tray 1 back into the machine until it snaps into place. Printing automatically resumes. 3. Close the front cover. 4-30 Service Manual Samsung Electronics...
  • Page 84 To avoid tearing the paper, pull it out gently and slowly. 5. Close the front cover and insert the trays back into the machine. Printing automatically resumes. 5. Close the front cover to resume printing. 4-31 Service Manual Samsung Electronics...
  • Page 85 5. Close the inner cover. 6. After removing the jammed paper, check for paper which may be jammed in other parts of the machine. 7. Close the top cover. Ensure that the cover is securely closed. 4-32 Service Manual Samsung Electronics...
  • Page 86 “In paper transfer belt, lift it out of the machine. the fuser unit area” on page 78. 3. Open and close the front cover to resume printing. 4-33 Service Manual Samsung Electronics...
  • Page 87 6. Close the front cover to resume printing. 4. Holding the handle on the paper transfer belt, align it with the slots on the inside of the front cover. 4-34 Service Manual Samsung Electronics...
  • Page 88 Check the rollers on paper path is dirty. Clean the rollers. Go to step 3. Is it dirty? Replace the pick up roller, Pick up roller, feed roller is defective. Replace the SMPS. feed roller together. 4-35 Service Manual Samsung Electronics...

  • Page 89: Image Quality Problems And Solutions

    48.2 (CMY) CMY toner cartridge Supply Roller Periodic Band (by little difference of density) 43.4 (K) K toner cartridge Transfer Roller White and Black Spot, Periodic Banding PTB Unit PTB Charge roller 31.4 PTB Unit 4-36 Service Manual Samsung Electronics...
  • Page 90 Start line PTB Charge roller Deve Roller (K) Deve Roller (CMY) Supply Roller (K) Transfer Roller Supply Roller (CMY) OPC Drum Pressure roller Fuser belt 4-37 Service Manual Samsung Electronics...
  • Page 91 Alignment & Troubleshooting Examples of Defective page Poor fusing Blank Page Vertical White Line Dark image or Black Vertical Black Line and Band Contamination on back of page Horizontal Bands Uneven Density 4-38 Service Manual Samsung Electronics...
  • Page 92 Check if there are scratches on the circumference of Replace the toner cartridge. the developing roller. Foreign objects inside the toner cartridge. Replace the toner cartridge. Check if there are vertical scratches on the transfer Replace the PTB unit. unit. 4-39 Service Manual Samsung Electronics...
  • Page 93 Bad contacts from OPC drum and/or toner cartridge to Check the terminal of Ground-OPC. ground. Not working the LSU Check the connecter of LSU Not working the developing bias voltage on HVPS Check the HVPS B’d and replace it. 4-40 Service Manual Samsung Electronics...
  • Page 94 Identify the roller which may cause the problem by comparing the period of the contamination on images Rollers and drum are dirty or defective. with the size of rollers. Clean any dirt from the roller or replace the dirty roller or part. 4-41 Service Manual Samsung Electronics...

  • Page 95: Common Problems And Solutions

    Check if the power input and SMPS Go to step4 Replace the SMPS. output are normal. Is it normal? Replace the OPE PBA or Check the LCD panel. Is it normal? Replace the LCD panel. the Main PBA. 4-42 Service Manual Samsung Electronics...

  • Page 96: Network Problems And Soltutions

    A.DHCP/BOOTP : IP can be changed after rebooting B. Auto IP address : Xerox Model default on 3. Protocol Enable / Disable, Port Number (In SWS) 4. IP filtering On/Off 5. SNMP community name check (When SNMP no response) 4-43 Service Manual Samsung Electronics...
  • Page 97 2. Protocol Enable / Disable, Port Number in printer driver Factory Default 1. Network Value changed to default value A. Some of Network value will not be changed immediately. B. Factory default operation will be done after Power Off / Power On 4-44 Service Manual Samsung Electronics...
  • Page 98 System Diagram 5. System Diagram 5.1 Main PBA Block Diagram Service Manual Samsung Electronics...
  • Page 99 System Diagram 5.2 OPE PANEL Block Diagram Service Manual Samsung Electronics...
  • Page 100 N24 LSU34 CN25 LSU34 24V_ n S TA RT_L SU_M OT_ n RE AD Y _L SU_1_ CLK_L SU_M OT_ 24V_ n S TA RT_L SU_M OT_ n RE AD Y _L SU_3_ CLK_L SU_M OT_ Service Manual Samsung Electronics...
  • Page 101 • Brush • Tweezers Standard : For general home use, small type. • Software (Driver) installation CD ROM Install Driver CD • Cotton Swab Network S/W CD Standard : For general home use, for medical service. Service Manual Samsung Electronics...
  • Page 102 Network Printer Card Tray NVRAM Nonvolatile Random Access Memory FISO Front-In, Side-Out Organic Photo Conductor FPOT First Print out Time Printed Board Assembly Windows Graphic Device Interface Printer Command Language , Printer Graphic Interchange Format Control Language Ground Service Manual Samsung Electronics...
  • Page 103 Reference Information Peripheral Component Interconnect SMPS Switching Mode Power Supply by Intel 1992/6/22, is a local bus SPGP Samsung Printer Graphic Processor standard developed by Intel and Samsung Printer Language introduced in April, 1993 : A60, B60 SPL-C Samsung Printer Language-Color...
  • Page 104 • Provide the proper environment : - A firm, level surface - Away from the direct airflow of air conditioners, heaters, or ventilators - Free of extreme fluctuations of temperature, sunlight, or humidity - Clean, dry, and free of dust Service Manual Samsung Electronics...
  • Page 105 Reference Information 6.4 A4 ISO 19798 Standard Pattern This test page is reproduced at 70% of the normal A4 size. Service Manual Samsung Electronics...
  • Page 106 Reference Information Service Manual Samsung Electronics...
  • Page 107 Reference Information Service Manual Samsung Electronics...
  • Page 108 Reference Information Service Manual Samsung Electronics...
  • Page 109 Reference Information Service Manual Samsung Electronics...

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