Samsung ML-1665 Service Manual Download Page 71

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Alignment and Troubleshooting

Service Manual

4-23

Samsung Electronics

5) Vertical Line Getting Curved

Description : When 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.

Summary of Contents for ML-1665

Page 1: ...er 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 ...

Page 2: ...E 1660 00000E GSPN Global Service Partner 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 ...

Page 3: ...Overview 2 1 2 1 2 Specifications 2 2 2 1 3 Model Comparison Table 2 7 2 2 System Overview 2 8 2 2 1 Front View 2 8 2 2 2 Rear View 2 9 2 2 3 System Layout 2 10 2 2 4 Engine H W Specifications 2 17 2 2 5 Engine F W Contol Algorithm 2 23 2 2 6 S W Descriptions 2 25 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...

Page 4: ... 3 10 Pick up roller 3 11 4 1 Alignment and Adjustments 4 1 4 1 1 Control Panel 4 1 4 1 2 Understanding the LEDs 4 2 4 1 3 JAM Removal 4 3 4 1 4 Printing a report 4 5 4 1 5 Periodic 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 Checking the Symptoms 4 12 4 2 2 Bad discharge 4 15 4 2 3 Malfunction 4 19 4 2 4 Bad i...

Page 5: ... 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 6 8 6 4 Selecting a location 6 9 Contents chapter 6 Reference Information chapter 5 System Diagram attached Exploded Views Parts List ...

Page 6: ...ctric shocks or fire hazards 3 Laser Safety Statement The product is certified in the U S to conform to the requirements of DHHS 21 CFR chapter 1 Subchapter J for Class 1 1 laser products and elsewhere it is certified as a Class I laser product con forming to the requirements of IEC 825 Class I laser products are not considered to be hazardous The laser system and product are designed so there is ...

Page 7: ...ng the power connector When removing the power connector grip it firmly and pull The power connector must be inserted completely otherwise a poor contact could cause overheating possibly leading to a fire 7 Take care of the power cable Do not allow it to become twisted bent sharply around corners or wise damaged Do not place objects on top of the power cable If the power cable is damaged it could ...

Page 8: ...carry out the following procedures before dismantling the product or replacing any parts 1 Check the contents of the machine memory and make a note of any user settings These will be erased if the main board or network card is replaced 2 Ensure that power is disconnected before servicing or replacing any electrical parts 3 Disconnect interface cables and power cables 4 Only use approved spare part...

Page 9: ... do you can get harm 3 When you move the printer This printer weighs 6kg including toner cartridge and cassette Use safe lifting and handling techniques Use the lifting handles located on each side of the machine Back injury could be caused if you do not lift carefully 4 Ensure the printer is installed safely The printer weighs 6kg ensure the printer is installed on a level surface capable of supp...

Page 10: ...oam to prevent electrostatic charge buildup in the vicinity of the assembly 3 Use only a grounded tip soldering iron to solder or desolder ESDs 4 Use only an anti static solder removal device Some solder removal devices not classified as anti static can generate electrical charges sufficient to damage ESDs 5 Do not use Freon propelled chemicals When sprayed these can generate electrical charges su...

Page 11: ...Product Specifications 2 1 1 Product Overview 2 Product spec and feature 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 ML 1660 ...

Page 12: ...2 Controller S W Items Specification Processor Jupiter4e 150 MHz Memory Std 8 MB Option N A Printer Languages GDI GDI Fonts Windows Fonts Driver Default Driver SPL Install SPL Supporting OS Windows 2000 XP 32 64bits Vista 32 64bits 2003 Server 32 64bits 2008 Server 32 64bits Win7 2008 R2 Various Linux OS 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 ...

Page 13: ... Items Specification Standard Capacity 150 sheet Tray 80g Max Capacity 150 sheets 80g Printing Max Size 216 x 356 mm 8 5 x 14 Min Size 76 x 183 mm 3 0 x 7 2 Standard Cassette Tray Capacity 150 sheets 80g Media sizes A4 A5 A6 ISO B5 JIS B5 Executive Letter O cio Folio Legal Custom Media types Plain Thin Recycled Thick Archive Media weight 16 32lb 60 to 120g Sensing Paper Empty Optional Cassette Tra...

Page 14: ...ges Declared cartridge yield in accordance with ISO IEC 19752 Key Electronic key CRUM Only Life detect Toner gauge sensor by dot count 2 1 2 5 Maintenanace part Items Life Transfer roller 30K pages Fuser unit 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 ye...

Page 15: ...W AVG Less than 270W Max Peak Less than 300W Sleep Power Off Less than 2 8W Less than 0 45W Conformity to EPA Dimension W x D x H SET 341 x 224 x 184 mm 13 42 x 8 81 x 7 24 SET Packing 394 x 278 x 241 mm 15 5 x 10 0 x 9 5 Toner 284 x 231 5 x 47 8mm Toner Packing 361 x 270 x 113 mm Weight SET 4 12kg Toner 0 68kg Gross 5 6kg 2 1 2 8 Packing Accessory Items Life In Box Driver Network Install CD ROM P...

Page 16: ...Product spec and feature Service Manual 2 6 Samsung Electronics 2 1 2 9 Options Items Specification Memory N A Second Cassette N A Wired Network N A Wireless Network N A Hard Disk N A Duplex Unit N A ...

Page 17: ... ppm A4 22 ppm A4 23 ppm A4 processor 150 MHz 150 MHz 266 MHz Memory 8 MB 8 MB 32 MB Print Language GDI GDI PCL5e Input 150 sheets Bin 150 sheets Bin 250 sheets Bin 10 Manual Duplex Manual Manual Manual 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 ...

Page 18: ...er 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 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 ...

Page 19: ...Product spec and feature Service Manual 2 9 Samsung Electronics 2 2 2 Rear View This illustration may differ from your machine depending on its model 1 USB port 2 Power receptacle ...

Page 20: ...ts comprising Frame Feeding Developing Driving Transferring Fusing Cabinet and H W comprising the main control board power board operation panel PC Interface 13 5 12 11 7 1 2 9 14 10 3 6 4 8 NO NAME 1 Pressure roller 2 Heat roller 3 Exit roller 4 Toner Cartridge 5 LSU 6 Charge roller 7 OPC NO NAME 8 Transfer roller 9 Deve roller 10 Supply roller 11 Feed roller 12 Friction pad 13 Pickup roller ...

Page 21: ...ay It takes 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 paper It has a paper existence sensing function Capacity 150 sheets 80g paper standard paper arranging function various size papers accepting function In the front side there is a paper level indicator 3 Pick up ...

Page 22: ... PTL Ass y Life Span Print over 30 000 sheets in15 30 2 2 3 3 Driver Assy 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 ...

Page 23: ...ontrol Temperature 170 5 2 Thermistor It is a temperatrue detecting sensor Temperature Resistance 7 180 3 Heat roller The heat roller transfers the heat from the lamp to apply a heat on the paper The surface of a heat roller is coated with Teflon so toner does not stick to the surface 4 Pressure roller A pressure roller mounted under a heat roller is made of a silicon resin and the surface also is...

Page 24: ...off when overheated 2nd protection device Software cuts off when overheated 3rd protection device Thermostat cuts off main power Safety device 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 ...

Page 25: ...d with the paper feeding speed The HSYNC signal is created when the laser beam from LSU reaches the end of the polygon mirror and the signal is sent to the controller The controller detects the HSYNC signal to adjust the vertical line of the image on paper In other words after the HSYNC signal is detected the image data is sent to the LSU to adjust the left margin on paper The one side of the poly...

Page 26: ...t contacting method Toner Non magnetic 1 element shatter type toner Charging capacity 39 1 3 μC g Average OD 8 0 0 5 Toner The life span of toner ISO 19752 pattern A4 standard Initial toner 0 7K Sales toner 1 5K Toner Residual Sensor Dot count with CRUM CRU Monitor OPC Cleaning Collect the toner by using cleaning blade Handling of wasted toner Collect the wasted toner in the cleaning frame by usin...

Page 27: ... I O handling drivers and PC interface The main board sends the Current Image of Video data to the LSU and manages the conduct of Electrophotography for printing It is consisted of the circuits of the motor paper feed pass driving clutch driving pre transfer lamp driving current driving The signals from the paper feed jam sensor and paper empty sensor are directly inputted to the main board CN4 LS...

Page 28: ... and Powerful ARM9 CPU LSU Interface Module for Interfacing PVC with LSU 2 Channel General Purpose DMA Controller for High Speed I O Dual Memory Bus Architecture Operation Frequency 150MHz Operation Voltage 3 3V POWER ON RESET TIME 6 6ms below b Memory 1 Flash Memory Store System Program and can be download System Program through PC Interface Capacity 0 5M Byte Access Time 70 nsec 2 SDRAM When Pri...

Page 29: ...r paper is fed paper Jam0 is occurred LED will be display Orange color Paper Exit Sensing N A Cover Open Sensing The Cover open sensor is located on the HVPS After the top cover is opened 24VS Solenoid Main Motor Polygon motor part of LSU and HVPS which is supplied to the each unit is cut off In case the red will be ON for informing the facts to user SOLENOID Driving Clutches are driven by turning...

Page 30: ...e 24V and outputs the 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 by an independent module so it is possible to use for common use It is mounted at the side of the set It is consisted of the SMPS part which supplies the DC power for driving the system and the AC heate...

Page 31: ...ut Voltage Falling Time 50 ms Max Output Loading range 30 MΩ 1000 MΩ Output Control Signal MHV PWM CPU is HV output when PWM is Low Cleaning Voltage THV The Transfer Voltage is not outputted because the THV PWM is controlled with low The Transfer Voltage is outputted because the THV Enable Signal is controlled with low The output fluctuation range is big because there is no Feedback control Develo...

Page 32: ... outputted Rated Output Power SMPS Board NO ITEM CH1 CH2 Remark 1 CHANNEL NAME 3 3V 24 0V 2 CONNECTOR PIN CON 3 3 3V PIN 5 7 GND PIN 8 9 CON 3 24V PIN 1 2 3 GND PIN 8 9 25 26 3 Rated Output 3 3V 5 3 135 3 465V 24V 10 10 15 21 6 26 4V 27 6V 4 Max Output Current 0 8A 1 35A 5 Peak Loading Current 1 0A 1 8A 100ms 6 RIPPLE NOISE Voltage 100mVp p Under 500mVp p 7 Maximum output 2 64W 32 4W 8 Peak output...

Page 33: ...oesn t pass the feed sensor Even though the paper reaches to the feed sensor the feed sensor doesn t be ON It is a status that the leading edge of the paper already passes the feed sensor JAM 1 After the leading edge of the paper passes the feed sensor the trailing edge of the paper cannot pass the feed sensor after a certain time The feed sensor cannot be OFF 2 2 5 2 Transfer The charging voltage...

Page 34: ...nit is higher than the specified temperature and the temperature state is kept during the specified time the engine defines Over Heat Error When this error is broken out the engine stops all functions and keeps it at the error state Also the engine informs the error status of the main system And then the error message is displayed at LCD window or LED to inform the error status of the user 2 2 5 4...

Page 35: ...language which printer can understand and transfers data to spooler 3 Stand alone Application that offers the various printing application PSU Printer Settings Utility Printer Status Monitor Network Management in Window system 4 Web based Application that offers the same functions as Stand alone Application and RDC Remote Diagnosis Control in Web environment Firmware is made up of 1 Application Em...

Page 36: ...management of printing job printer administration Status monitor to monitoring the printer status by real time in Web independent environment on OS 3 Stand alone Application that is a similar Window software as same as above 2 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 firs...

Page 37: ...Kernel receives this data from Host and then select emulation fit to data and start selected one After emulation job end Kernel sends the output bit map data to Engine using Printer Video Controller by clock type for LSU Engine print the received data to required paper with the sequential developing process 2 Case of using Network Interface Card After user start to print the wanted document to PCL...

Page 38: ...y can damage a PBA always used approved anti static precautions when handling or storing a PBA Precautions when moving and storing PBA 1 Please keep PBA in a conductive case anti static bag or wrapped in aluminum foil 2 Do not store a PBA where it is exposed to direct sunlight Precautions when replacing PBA 1 Disconnect power connectors first before disconnecting other cables 2 Do not touch any so...

Page 39: ...PER SCREW TAPTYPE PWH B M3 L10 NI PLT SWRCH18A 1 6003 000282 SCREW TAPTYPE BH B M3 L8 ZPC BLK SWRCH18A 4 6003 000269 FUSER LOWER SCREW TAPTYPE BH S M3 L6 ZPC WHT SWRCH18A 3 6003 000196 FRAME PAPER PATH SCREW TAPTYPE PWH B M3 L10 NI PLT SWRCH18A 7 6003 000282 FRAME FEED IDLE SCREW TAPTYPE BH B M3 L8 ZPC BLK SWRCH18A 2 6003 000269 FRMAE MAIN LEFT SCREW TAPTYPE BH S M3 L6 ZPC WHT SWRCH18A 6 6003 0002...

Page 40: ...ual 3 3 Samsung Electronics 3 3 Cover 3 3 1 Left Right cover 3 3 2 Rear bracket 1 Take off the left cover by removing hooks from its edge 2 Take off the right cover by removing hooks from its edge 1 Remove 4 screws Release the rear bracket ...

Page 41: ...Electronics 3 3 3 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 ...

Page 42: ...sembly and Reassembly Service Manual 3 5 Samsung Electronics 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 ...

Page 43: ...tronics 3 5 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 ...

Page 44: ...Service Manual 3 7 Samsung Electronics 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 ...

Page 45: ...lectronics 3 7 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 3 Remove 3 screws Release the LSU Top view Front view COVER LSU Top view Front view COVER LSU Top view Front view COVER LSU ...

Page 46: ...Disassembly and Reassembly Service Manual 3 9 Samsung Electronics 3 8 Drive unit 1 Remove the left cover 2 Remove 4 screws Release the drive unit ...

Page 47: ... Electronics 3 9 Step motor 1 Remove the drive unit Refer to 3 8 2 Remove 7 screws Release the left frame bracket 3 Remove 2 screws Release the step motor Caution When reassembling the drive unit put down the drive unit and assemble the left frame bracket ...

Page 48: ...Disassembly and Reassembly Service Manual 3 11 Samsung Electronics 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 ...

Page 49: ...t includes the contents of manual 4 1 1 Control Panel The ML 1660 series printers have 2 keys and 2 LEDs The User Interface module handles the processing of the Key Press and LED control at different states of the machine 4 Alignment and Troubleshooting 1 Jam Shows the status of jam occurance of your machine 2 Online Error Shows the status of your machine 3 Print Screen Prints the displayed screen...

Page 50: ...ened Close the cover There is no paper in the tray Load paper in the tray The machine has stopped due to a major error Your system has some problems If this problem occurs contact your service representative A toner cartridge has almost reached its estimated cartridge lifea Blinking A minor error has occurred and the machine is waiting for the error to be cleared When the problem is cleared the ma...

Page 51: ...e paper ejects from the machine If the paper does not exit go to the next step 3 Remove the original jammed paper by gently pulling it straight out 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 Inside the machine 1 If the output tray is opened close the output tray first 2 Open and close the top cover The jammed...

Page 52: ...y pulling it straight out If you do not see the jammed paper go to next step 6 Pull the toner cartridge out 7 Remove the original jammed paper by gently pulling it straight out 8 Replace the toner cartridge 9 Close the fuser unit cover 10 Close the top cover and open the output tray Printing automatically resumes ...

Page 53: ... diagnosis of print quality problems By pressing the Print screen button you can print these reports Report How to print Printing demo page configuration sheet In the ready mode press and hold this button for about 6 seconds 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 rel...

Page 54: ...Alignment and Troubleshooting Service Manual 4 6 Samsung Electronics Demo Page ...

Page 55: ...Alignment and Troubleshooting Service Manual 4 7 Samsung Electronics Supplies Information Report ...

Page 56: ...art OPC Drum 62 9mm White and Black Spots Toner Cartridge Developing Roller 35 1mm White spot Horizontal black band Charging Roller 26 7mm Black Spot and line and periodic band Supply Roller 47mm Periodic Band by little difference of density 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 im...

Page 57: ...ng Electronics 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 ...

Page 58: ... can also launch Smart Panel manually Double click the Smart Panel icon on the Windows task bar in Windows or Notification Area in Linux You can also click it on the status bar in Mac OS X Windows Double click this icon in Windows Macintosh Click this icon in Mac OS X Linux 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 S...

Page 59: ...e settings in the Printer Settings Utility window Some machines do not have this feature If you connect your machine to a network the SyncThru Web Service window appears instead of the Printer Settings Utility window 5 Driver Setting Set all of the machine options you need in the Printer Preferences window This feature is available only for Windows 4 1 7 2 Opening the Troubleshooting Guide Find so...

Page 60: ...to repair the printer first obtain a detailed description of the problem from the customer Power On Red LED or Orange LED on Red Yes Orange No OPE LED Green OK Print test pattern printing Quality is Nomal Refer to Solution of Image Problem See the troubleshooting flow chart END No Power Power Module error Main PBA OPE LED ON Remove the jammed paper ...

Page 61: ...paper fragments caught in the paper path Paper Jam occurs repeatedly at a specific point in the Paper Path Open the fuser cover Jam clear Dismantle the machine and carefully inspect the region where the jam occurs Especially check if paper fragments are caught in the Fuser 4 Print the Information Page Configuration Try printing a test page from a computer If there is an error check cables and driv...

Page 62: ...gs are within specification If necessary move the printer 3 Ensure that the printer is position away from any air conditioning or other heating or cooling equipment Also ensure that is not positioned in a direct draft from any air conditioning fan or open window If necessary move the printer 4 Ensure the printer is not positioned in direct sunlight If it is unavoidable use a curtain to shade the p...

Page 63: ... the cassette 2 Jam 0 occurs if the paper feeds into the printer 1 Check the Solenoid 2 Check if the separation pad in the cassette is worn away 3 Check the surface of the roller pick up is contaminated Replace the solenoid Replace the separation pad Clean with soft cloth dampened with IPA Isopropyl Alcohol or replace the pick up roller ...

Page 64: ...he discharge roller and in the fuser just after passing through the Actuator Feed 1 If the paper is jammed in front of or inside the fuser 2 If the recording paper is stuck in the discharge roller and the fuser just after passing through the Actuator Feed Feed Actuator may be defective Replace the fuser unit Reassemble the Actuator Feed and Spring Actuator if the returning is bad ...

Page 65: ...g Description Multiple sheets of paper are fed at once 1 Solenoid malfunction the solenoid does not work properly 2 Cassette holder pad is contaminated with foreign matter oil Replace the solenoid if necessary Clean the pad friction with soft clothe dampened with IPA Isopropyl Alcohol ...

Page 66: ...4 Paper rolled on the OPC Drum Description Paper is rolled up in the OPC 1 Paper is too much thin 2 The face of paper is curled Recommend to use normal paper How to remove the rolled in the OPC Drum Remove the paper while turning the OPC Drum against the ongoing direction ...

Page 67: ...n The paper lamp on the operator panel is on even when paper is loaded in the cassette 1 Bending or deformation of the actuator of the paper sensor 2 Check if the connector of the sensor PBA is connected properly Replace the defective actuator Reconnect the connector If the problem persist replace the sensor PBA ...

Page 68: ... lamp on when the cover is open Description The 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 ...

Page 69: ...ve motor operation Description Main motor is not driving when printing and paper does not feed into the printer resulting Jam 0 1 Motor harness may be defective 2 Check the motor operation Check the motor harness replace it if defective Replace the Motor or Drive unit if necessary ...

Page 70: ...er 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 HVPS SMPS board is connected correctly 2 Check if the HVPS SMPS output is normal Reconnect the flat cable Replace the HVPS SMPS board ...

Page 71: ...Service Manual 4 23 Samsung Electronics 5 Vertical Line Getting Curved Description When 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 ...

Page 72: ...ertical band occur in the printing 3 Partly depression or deformation on the surface of the transfer roller 2 Scratched surface of the charge roller in the toner cartridge 1 Damaged develop roller in the Toner cartridge Deformed Doctor blade or cleaning blade If causes 1 and 2 occur in the toner cartridge replace the toner cartridge and try to print out Replace the transfer roller if occurred as N...

Page 73: ...the toner cartridge roller and blade In case the life of the toner cartridge has been expired white lines or light image occur in front of the image 1 Foreign matter stuck onto the window of internal lenses of LSU mirror Foreign matter stuck onto the window Clean the LSU window with recommended cleaner IPA Clean the window with a clean cotton swab Replace the toner cartridge No 3 Remove the foreig...

Page 74: ...Bad contacts of the voltage terminals to developer Clean each voltage terminal of the Charge Supply Develop and Transfer roller remove the toner particles and paper particles 1 Clean the right Gear that has relatively small gap of the teeth in the OPC 2 If the malfunction persists replace the developer Opc drum 62 9mm Developing Roller 35 1mm Charging Roller 26 7mm Supply Roller 47mm Transfer Roll...

Page 75: ...emovable in 1 cleanly remove foreign substances stuck on the OPC location equivalent to black spots and white spots with a dry duster 1 The transfer roller guarantees 30 000 sheets printing If the roller s life is expired replace it 2 In case of 39 2 mm interval unremovable in 1 take measures as to replace the develop er cartridge and try to print out 5 Clean the inside of the set against the pape...

Page 76: ...contact caused by the toner stains between the high voltage terminal in the HVPS and the one in the set 3 Abnormal output from the HVPS Replace the developer cartridge and try to print out 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 ...

Page 77: ... voltage is not turned on due to the bad contacts between power supply in the side of the Developer and charge terminal of HVPS 1 No charge voltage in the engine board Clean the high voltage charge terminal 1 Check the state of the connector which connects the engine board and HVPS 2 Replace the HVPS if not solved by the above direction 1 and 2 ...

Page 78: ...sfer roller smooth 5 Is the HVPS normal 2 Does recycle paper be used 1 Does character exist less than 2 per a page and has not it been used long time The toner cartridge is basically designed to print 1 500 sheets with 5 image Replace the developer when the life span of it has been ended The A S is not guaranteed if using recycle paper If the problem is still not solved replace the developer Clean...

Page 79: ...n high voltage terminal in the main body and the one in the HVPS board 1 Bad contacts caused by contamination from toner particles between high voltage terminal in the main body and the electrode of the Developer Clean the terminals when contaminated by toner particles Replace the engine board if not solved by the above directions 1 2 Occur in the developer cartridge replace the developer and try ...

Page 80: ...in the whole printing When printing on card stock or transparencies using manual feeder When printing on card stock thicker than normal paper or transparencies such as OHP higher transfer voltage is required Select Thick Mode on paper type menu from the software application and after using returning to the original mode is recommended 62 9mm ...

Page 81: ...ge printing at 47 mm intervals 1 The life of the developer may be expired 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 47mm ...

Page 82: ... Ghost 4 Description Ghost occurs at 47 mm intervals 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 roller Caution can be deformed 47mm ...

Page 83: ...oting Service Manual 4 35 Samsung Electronics 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 improperly sealed developer Replace the toner cartridge ...

Page 84: ...r roller is contaminated Print 2 or 3 times Run Self Test to remove the contamination of the transfer roller 2 Pressure roller is contaminated 1 Replace the transfer roller if contaminated severely 2 Disassemble the fuser and clean 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 ...

Page 85: ...eshooting Service Manual 4 37 Samsung Electronics 14 Blank Page Print out 1 Description Blank page is printed Bad ground contacts in OPC and or developer Remove contamination of the terminals of the developer and the unit ...

Page 86: ...PANEL Toner cartridge is not installed Install the cartridge C1 1512 SMART PANEL Toner cartridge is not compatible Check users guide M1 1113 SMART PANEL Paper jam in tray 1 M2 1211 SMART PANEL S2 4110 SMART PANEL Door is open Close it U1 1211 SMART PANEL Fuser Unit Failure U1 1211 Turn off then on U1 2121 SMART PANEL Fuser Unit Failure U1 2121 Turn off then on U2 1112 SMART PANEL LSU Unit Failure ...

Page 87: ...8 Samsung Eletronics 2 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 ...

Page 88: ...ED 2010 04 08 Samsung Eletronics 3 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 ...

Page 89: ...ED 2010 04 08 Samsung Eletronics 4 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 ...

Page 90: ...e 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 ...

Page 91: ...0 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 ...

Page 92: ...nics 7 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 ...

Page 93: ...ED 2010 04 08 Samsung Eletronics 8 Trouble Shooting Method 1 Open the Cover Exit 2 Replace the toner cartridge 3 Close the Cover Exit ...

Page 94: ...r cartridge is not installed Install 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 ...

Page 95: ...Samsung Eletronics 10 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 ...

Page 96: ...ED 2010 04 08 Samsung Eletronics 11 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 ...

Page 97: ...has not reached 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 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 ...

Page 98: ...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 the error message in Smart Panel is not disappered check the Regi sensor and actuator If they are defective replace them ...

Page 99: ...ANEL 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 ...

Page 100: ...er Unit Failure U1 1211 Turn off then on Symptom Cause 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 ...

Page 101: ...ED 2010 04 08 Samsung Eletronics 16 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 ...

Page 102: ...ED 2010 04 08 Samsung Eletronics 17 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 ...

Page 103: ...er Unit Failure U1 2121 Turn off then on Symptom Cause 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 ...

Page 104: ...ED 2010 04 08 Samsung Eletronics 19 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 ...

Page 105: ...ED 2010 04 08 Samsung Eletronics 20 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 ...

Page 106: ... LSU Unit Failure U2 1112 Turn 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 ...

Page 107: ...NEL LSU Failure U2 1114 Turn 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 ...

Page 108: ...l l o r t n o C Y T P M E r o s n e S e c i v e D B S U p U k c i P h c t u l C L O S K L C k c o l C r o t a r e n e G z H M 2 1 r o t o M r e p p e t S C I r e l l o r t n o C L E C N A C h c t i w S t c a T y d a e R r o r r E D E E F r o s n e S C I T E S E R M A R D S e t y B M 8 R E W O P t f o S h c t i w S t c a T M A J V 3 3 V 4 2 T E L N I C A V 4 2 P 4 t i n U R E S U F t a t s o m r e ...

Page 109: ... 1 2 3 4 1 2 3 4 1 M R E H T _ R E S U F 1 R O T S I M R E H T CN2 THERMISTOR 1 2 CN6 SMPS HVPS I F S V 4 2 S V 4 2 S V 4 2 2 S V 4 2 S P M S _ V 3 3 V 3 3 S P M S _ V 3 3 D N G D N G P E E L S n W S _ R E W O P n C D _ V E D _ M W P R O R R E _ D E L n M W P _ V H M Y D A E R _ D E L n M W P _ V H T L E C N A C _ Y E K n M A J _ D E L n N O _ R E S U F N E _ V H T n D A E R _ V H T K L C _ V E D ...

Page 110: ...oting The following tools are recommended safe and easy troubleshooting as described in this service manual DVM Digital Volt Meter Standard Indicates more than 3 digits Driver Standard type type M3 long M3 short M2 long M2 short Tweezers Standard For general home use small type Cotton Swab Standard For general home use for medical service Cleaning Equipments Standard An IPA Isopropyl Alcohol dry w...

Page 111: ...Fast Fusing EH S Samsung Environment Health Safty ESMTP Extended Simple Mail Transfer Protocol EP Electro Photography EPC Electric Pre Collation FCOT First Copy Out Time FDI Foreign Device Interface FIA Foreign Interface Attachment FRU Field Replaceable Unit FPOT First Print Out Time GW GateWay HH High Temperature High Humidity Testing Chamber conditions HPVC Halftone Printing Video Controller in ...

Page 112: ...s PQ Print Quality PS 3 PostScript Level 3 PVC Printing Video Controller in the SPGPm Graphic Processor for Printer QCD Quality Cost and Delivery RCP Remote Control Panel RT OS Real Time Operating System RX Receive S2E Scan To Email SAD Solid Area Density SC Service Call SCF Second Cassette Feeder SDSP Single Document Single Printout SDMP Single Document Multiple Printout SDR Shut Down Rate SEF Sh...

Page 113: ...Bypass tray PBA MAIN MAIN PBA Printed circuit Board Assembly PMO CONNECT PAPER MFP MFP Multi Functional Peripheral FAN DC DC Direct Current CBF POWER STITCH GRAY CBF Cable Form MEA UNIT GUIDE CST PA ASS Y CST Cassette Paper tray PA Paper PBA LIU PBA Printed circuit Board Assembly LIU Line Interface Unit for FAX SHIELD P_MAIN LOWER P Press CBF HARNESS LIU GND LIU Line Interface Unit for FAX GND Gro...

Page 114: ...ector D Sub a kind of the connector type shape D COVER M CCD CABLE M Mold CCD Charge Coupled Device COVER SCAN LOWER UMAX UMAX Supplier s name for CCD module ICT INSERT SHAFTI ICT Iron Cutting IPR BRK SCAN BD IPR Iron Press BRK Bracket BD Board CBF SIGNAL CCD FFC CCD Charge Coupled Device FFC Flexible Flat Cable COVER M OPE M Mold OPE Operation Panel Control Panel KEY M COPY M Mold PLATE M ALPHA K...

Page 115: ...nsor 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 CBF HARNESS OPC GND OPC GNG Organic Photo Conductive Ground IPR GROUND PLATE SCF SCF Second Cassette Feeder Tray2 PBA SUB PTL PBA SUB PTL Sub Printed circuit Board Assembly for the PTL Pre...

Page 116: ...OT FU CAU HOT FU Caution Hot Fuser PMO ARM ACTUATOR PMO ARM Processing Mold Arm LABEL R HV FUSER HV High Voltage 220V LABEL R LV FUSER LV Low Voltage 110V PPR SPONG SHEET PPR Plastic Press IPR P_PINCH SCAN I PR P Iron Press ROLLER REGI 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...

Page 117: ...sample pattern shown in below is the standard pattern 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 ...

Page 118: ...overs and trays The area should be well ventilated and away from direct sunlight or sources of heat cold and humidity Do not set the machine close to the edge of your desk or table Clearance space 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 ...

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Samsung ML-1665, Service Manual

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