Samsung CLP-775ND Service Manual Download

Page: 126 / 134

6. Reference Information

6. Reference Information

This chapter contains the tools list, list of abbreviations used in this 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.

DVM (Digital Volt Meter)

Standard : Indicates more than 3 digits.

Cleaning Equipments

Standard : An IPA (Isopropyl Alcohol) dry wipe tissue or a
gentle neutral detergent and lint-free cloth.

Driver

Standard : “-” type, “+” type (M3 long, M3 short, M2 long,
M2 short).

Vacuum Cleaner

Tweezers

Standard : For general home use, small type.

Spring Hook

Standard : For general use

Cotton Swab

Standard : For general home use, for medical service.

Software (Driver) installation CD ROM

6-1

Summary of Contents for CLP-775ND

Page 1: ...Color Laser Printer Contents 1 Precautions 2 Product spec and feature 3 Disassembly and Reassembly 4 Alignment and Troubleshooting 5 System Diagram 6 Reference Information Refer to the service manual...

Page 2: ...er and Software 2 2 2 1 2 3 Paper Handling 2 3 2 1 2 4 Reliability Service 2 4 2 1 2 5 Consumables 2 4 2 1 2 6 Maintenance part 2 5 2 1 2 7 Environment 2 6 2 1 2 8 Packing Accessory 2 6 2 1 2 9 Option...

Page 3: ...er 3 7 3 3 3 Retard Roller 3 8 3 3 4 Dust Cleaning Kit 3 9 3 4 Disassembly Procedure 3 10 3 4 1 Cover 3 10 3 4 2 Front Cover 3 13 3 4 3 OPE Unit 3 14 3 4 4 Main PBA 3 14 3 4 5 HVPS board 3 15 3 4 6 SM...

Page 4: ...on 4 19 4 2 Troubleshooting 4 24 4 2 1 Procedure of Checking the Symptoms 4 24 4 2 1 1 Basic Check List 4 25 4 2 2 Error code and troubleshooting 4 26 4 2 3 Image quality problems 4 60 4 2 4 Other err...

Page 5: ...ements of DHHS 21 CFR chapter 1 Subchapter J for Class I 1 laser products and elsewhere is certified as a Class I laser product conforming to the requirements of IEC EN 60825 1 2014 Class I laser prod...

Page 6: ...ing 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...

Page 7: ...the exact location of parts and also cable routing before dismantling any part of the machine Ensure all parts and cables are replaced correctly Please carry out the following procedures before disma...

Page 8: ...er 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 yo...

Page 9: ...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 sta...

Page 10: ...5c PCL6 PDF 1 4 4 Memory 384 MB Standard 896 MB Max 5 Interface High Speed USB 2 0 10 100 1000 BaseTX network connector 802 11b g n wireless LAN Optional IEEE 1284 Parallel Optional HDD 250 GB Optiona...

Page 11: ...4 ppm in Letter Warm up time From Sleep 25 sec From Ready 10 sec FPOT B W From Sleep 28 sec From Ready 11 sec FPOT Color From Sleep 30 sec Optical 600 x 600 dpi Resolution Support PCL Best 9 600 x 600...

Page 12: ...tional LCD 4 Line LCD User Interface LED 1 Status LED 2 1 2 3 Paper Handling Items Specification Standard Capacity 500 sheet Tray 80g m 100 sheet MP Tray Max Capacity 1600 sheets 80g m 500 sheet basic...

Page 13: ...Media weight 16 32lb 60 120g m 2 1 2 4 Reliability Service Items Specification Printing Volume SET AMPV 1800 Pages 1080 720 pages Color and mono prints Max Monthly Duty 120 000 pages MPBF 65 000 pages...

Page 14: ...3A ROLLER RUBBER P UP MP 100K Pages N A Friction Pad MPT JC73 00132A RPR FRICTION PAD MP 100K Pages N A Main Set Dust cleaning Kit JC93 00399A FRAME REGI CLEANING 100K Pages F Replace Dust Cleaning A...

Page 15: ...n 8 Wh Dimension W x D x H SET 446 x 481 x 464 mm 17 6 x 18 9 x 18 3 inches without optional tray Weight SET with consumables 30 4 kg 67 lbs 2 1 2 8 Packing Accessory Item Accessory In Box Driver Inst...

Page 16: ...PCL5 6 PS3 PDF 1 4 PCL5 6 PS3 PDF 1 4 PCL5 6 PS3 PDF 1 4 Paper Input 500 Cassette 100 MP 500 x 2 SCF 500 Cassette 100 MP 500 x 2 SCF 250 Cassette 100 MP 500 SCF Duplex Std Std Std Interface High Spee...

Page 17: ...r machine depending on its model 1 Output Tray 8 Front Cover Handle 2 Output Support 9 Front Cover 3 Paper Level Indicator 10 Control Panel 4 Optional Tray 11 Multi Purpose Tray Paper Width Guide 5 Tr...

Page 18: ...l Board cover 6 Network Port 2 Power receptacle 7 USB Port 3 Power Switch 8 External device interface EDI 4 Handle 9 IEEE 802 11 b g n Wireless LAN 5 IEEE1284 Parallel Connector External device interf...

Page 19: ...x Pass Exit Pass MP Feed Cassette Feed SCF1 Feed SCF2 Feed Simplex Pass Duplex Pass Exit Pass MP Feed Cassette Feed SCF1 Feed SCF2 Feed Cassette Feed SCF1 Feed SCF2 Feed Simplex Pass Duplex Pass Exit...

Page 20: ...ard Fuser control board operation panel PC Interface 16 14 15 17 No Name No Name 1 LSU 10 OPE Unit 2 Toner Cartridge K 11 Fuser Unit 3 Toner Cartridge C 12 Paper Transfer Unit PTB 4 Toner Cartridge M...

Page 21: ...nt transport to the Registration Rollers The Pick up roller is driven by a solenoid 3 Registration Roller It is used a the primary Registration Roller which is used to time the paper with the visibly...

Page 22: ...power to prevent over heating Thermostat Type Non Contact type 2 Thermistor It is a temperature detecting sensor 3 Fuser Belt The fuser belt transfers the heat from the lamp to apply a heat on the pap...

Page 23: ...These motors drive the PTB unit fuser unit feeder unit exit unit etc 1 2 3 4 No Motor Function 1 BLDC Motor For Fuser Unit 2 BLDC Motor For OPC Drive Unit 3 BLDC Motor For DEVE Drive Unit 4 Step Moto...

Page 24: ...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...

Page 25: ...oner images formed on OPC drum are transferred to the printing medium paper by positive bias applied to the transfer roller The toner images transferred to the paper is melted down and fixed on the pa...

Page 26: ...s toner supply roller developing roller and blade Doctor blade Developing method Non magnetic one component non contacting method Toner Non magnetic one component pulverized toner The expected life of...

Page 27: ...witch 24VS1 24V1 Sens or FCF Empty CST Detect Feed Sens or Exit Sens or Regi Sens or P s ize Sens or Cas s ette MP Pickup Solenoid MP Empty Sens or 24V1 24V2 24V3 5V_SMPS DEVICE USB RESET IC DC Conver...

Page 28: ...1 12 13 14 15 16 17 18 20 19 33 31 32 30 29 28 27 26 25 24 23 22 21 NO Connector NO Connector NO Connector 1 DEVE BLDC 12pin 12 FUSER THERMISTOR 6pin 23 NETWORK JACK 2 OPC BLDC 10pin 13 PTL 8pin 24 DC...

Page 29: ...Size 512KB Interface With SPGPV4 I2C Controller 4 SDRAM Size 256 Byte I O Interface 1 USB DEVICE High Speed USB 2 0 High speed 480Mbps Host J SCRIBE Enabler Kit Full speed 12Mbps 2 N W Embedded Chorus...

Page 30: ...24V from 110V 220V power input It has safety protection modes for over current and load Specification AC 110V 90V 135V AC 220V 180V 270V Output Power 192W Max 270W DC 5V 24W 30W DC 24V 168W 240W 1 2...

Page 31: ...Power 24V Ground GND 5 6 GND 24V Ground Power 24V2 7 8 GND 24V Ground Power 24V2 9 10 24V2 Power 24V Ground GND 11 12 GND 24V Ground Power 24V3 13 14 GND 24V Ground Power 24V3 15 16 GND 24V Ground 5V...

Page 32: ...S has Cover Open switch and some connectors from Ope PBA feed exit regi cst empty paper size cst detect MP empty sensor MP clutch and Erase Lamp 4EA Connection 1 PANEL 6 Feed CST empty sensor 2 EXIT S...

Page 33: ...C JIG 68pF 1 50 Transfer_Y M C K 14uA 90M 1 84V 142 3 ATTR 1418V 100M 0 85V 66 3 ATTR 800V 25M 15 Fuser Bias 418V 100M 3 Eraser Y M C K 0 255 on off 18mA 3mA Constant current outputs in T1 channels In...

Page 34: ...age Environment DC 134 6V 3 Rated input 250pF load Read AC value by using a AC_DC convertingJig Output voltage Setting 134 6V Rated input 250pF load 2 MHV DC_M C K Item Specification Condition Rated o...

Page 35: ...power to the SMPS Both V1 V2 FDBs provide max 1500W output power Connection 1 INLET AC 2 FUSER CONTROL from Main board 3 FUSER AC to Fuser lamp 4 SMPS AC to SMPS Specification V1 V2 Input Voltage Rang...

Page 36: ...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 775ND Connection 1 Main IF 2 LCD Back Li...

Page 37: ...assette Dete ct Regi Sensor Paper Empty Sensor Paper Feed Sensor No Name Description 1 Bin Full Sensor Check overflowing of Paper on Stacker 2 Regi Sensor Two Regi Sensor for checking precise paper po...

Page 38: ...5 16 16 17 1 CASSETTE_DETECT 10 SENS_ACR 2 PAPER_EMPTY 11 THERMOSTAT 3 SENS_FEED 12 CRUM_DEVE_Y M C K 4 SENS_REGI 13 CRUM_PTB 5 SENS_PAPER_EXIT 14 PAPER_SIZE1 2 3 6 OUTBIN_FULL 15 INNER_TEMP 7 MP_EMPT...

Page 39: ...unctions to user in Host 2 Driver that translates the received document to a Printing Command language which printer can understand and transfers data to spooler 3 Stand alone Application that offers...

Page 40: ...above 4 Port Monitor that manages the network communication between spooler and Network Interface Card or various additional application and Network Interface Card this is at first make communication...

Page 41: ...unit malfunction 3 1 2 Preautions when handling PBA Static electricity can damage a PBA always used approved anti static precautions when handling or storing a PBA Precautions when moving and storing...

Page 42: ...ches Many of the parts are held in place with plastic latches The latches break easily release them carefully To remove such parts press the hook end of the latch away from the part to which it is lat...

Page 43: ...PC WHT SWRCH18A 4 6003 000269 SUPPORT L SCREW TAPTYPE BH S M3 L6 ZPC WHT SWRCH18A 2 6003 000269 SUPPORT R SCREW TAPTYPE BH S M3 L6 ZPC WHT SWRCH18A 3 6006 001193 FEED DRIVE SCREW MACHINE PH WSP M3 L10...

Page 44: ...B M3 L8 ZPC BLK SWRCH18A 2 6003 000282 MEA UNIT FRAME SCREW TAPTYPE BH B M3 L8 ZPC BLK SWRCH18A 4 6002 000440 CASSETTE SCREW TAPPING PWH 2 M3 L8 ZPC BLK SWRCH18A 2 6003 000196 CASSETTE SCREW TAPTYPE...

Page 45: ...3 000269 COVER TOP SCREW TAPTYPE BH S M3 L6 ZPC WHT SWRCH18A 6 6003 000269 COVER TOP BRKT REAR SCREW TAPTYPE BH S M3 L6 ZPC WHT SWRCH18A 4 6003 000269 FDB SCREW TAPTYPE BH S M3 L6 ZPC WHT SWRCH18A 4 6...

Page 46: ...g the specified number of pages or when the life span of each item has expired NOTE Turn power off and unplug power cord from the wall outlet before any servicing 3 3 1 Fuser Unit 1 Open the Top cover...

Page 47: ...3 Disassembly and Reassembly 3 3 2 Pick Up roller 1 Remove the Cassette Unit 2 Pull the pick up roller in the direction of the arrow Copyright 1995 2016 SAMSUNG All rights reserved 3 7...

Page 48: ...e Cassette Paper Path after removing 2 screws 3 Remove the Plate Path after removing 5 screws 4 Remove the Guide Paper Path after releasing both hooks 5 Release the Retard roller holder 6 Release the...

Page 49: ...t 1 Remove the cassette 2 Open the front cover Remove the PTB Paper Transfer Belt unit 3 Pull the toner cartridge unit out of the machine 4 Separate the guide pick up 5 Separate the dust cleaning kit...

Page 50: ...cartridges 1 Remove 2 screws and the MEA COVER NOISE 2 Open the front cover And remove 2 screws 3 Remove the left right cover by pushing the hooks with any sharp tool 4 Unlatch the 5 hooks from the b...

Page 51: ...ly 5 Release the rear cover after remove 7 screws 6 Remove 4 screws from both side 7 Remove 6 screws 8 Lift the top cover up Unplug 2 connectors 9 Remove the left right link Copyright 1995 2016 SAMSUN...

Page 52: ...assembly 10 Remove 4 screws from both side 11 Remove the Bracket hinge with any tool after remove one screw 12 Remove the Damper hinge 2 EA And release the front cover 3 12 Copyright 1995 2016 SAMSUNG...

Page 53: ...Open the Front Cover Remove 2 screws And remove the shaft NOTE When reassembling be careful the shaft head direction 2 For the opposite side remove 2 screws and the shaft NOTE When reassembling be ca...

Page 54: ...side 2 Release the OPE PBA after removing 4 screws 3 4 4 Main PBA Before disassembling the Main PBA remove the cover unit 1 Unplug all harness from Main PBA 2 Remove 4 screws and release the Main PBA...

Page 55: ...lug the harness from the top bottom of the HVPS Board 2 Remove 8 screws and unlatch 4 hooks 3 4 6 SMPS Board Before disassembling the SMPS board remove the cover unit 1 Unplug the harness from the SMP...

Page 56: ...ng the AC board remove the Main PBA 1 Remove the 4 screws 2 Remove the SMPS board after removing 4 screws 3 Remove the 3 screws And then remove the SMPS bracket 4 Remove 6 screws and release the AC Bo...

Page 57: ...Control Board Before disassembling the Fuser control board remove the cover unit 1 Unplug the harness from the Fuser control board 2 Release the Fuser control board after removing 4 screws Copyright 1...

Page 58: ...ly 3 4 9 LSU Before disassembling the LSU remove the BRACKET REAR 1 Remove the BRACKET REAR after removing 7 screws 2 Remove the rear fan Remove 4 screws And remove the LSU 3 18 Copyright 1995 2016 SA...

Page 59: ...mbly and Reassembly 3 4 10 Clutch Pick Up and Clutch Feed 1 Remove 2 E rings E Ring 2 Release the Clutch Feed and Clutch Pick Up Clutch Feed Clutch Pick Up Copyright 1995 2016 SAMSUNG All rights reser...

Page 60: ...atus of each toner cartridge 3 Menu Enters menu mode and scrolls through the available menus 4 Back Sends you back to the upper menu level 5 Arrow Scroll through the options available in the selected...

Page 61: ...ray Load paper in the tray The machine has stopped due to a major error Check the display message Red Blinking A minor error has occurred and the machine is waiting for the error to be cleared Check t...

Page 62: ...r possibly electrical shock 4 1 3 1 Clearing Paper Jams In tray If paper is jammed in the paper feed area follow the next steps to release the jammed paper 1 Using the handle completely open the front...

Page 63: ...ll it out gently and slowly In the multi purpose tray 1 If the paper is not feeding properly pull the paper out of the machine If you do not see the jammed paper or if there is any resistance when you...

Page 64: ...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 In exit area 1 Open and close the fro...

Page 65: ...out of the machine 3 Remove the jammed paper by pulling in the direction shown To avoid tearing the paper pull it out gently and slowly 4 Holding the handle on the paper transfer belt align it with t...

Page 66: ...ou press up down arrow Printed Pages Displays the total number of pages printed Remains Info Displays how much toner remains in the cartridge Cleaning a fuser belt If you are experiencing blurred fade...

Page 67: ...mm Phenomenon Defective part Fuser Belt 125 7 mm Waving Offset Spot Line Burst Fuser Unit Pressure Roller 91 mm Offset Spot Line Burst Fuser Unit OPC Drum 75 39 mm White and Black Spot Periodic Bandi...

Page 68: ...Printer Manager provides two different user interfaces for the user to choose from the basic user interface and the advanced user interface Switching between the two interfaces is easy just click a bu...

Page 69: ...Supplies Click on the Order button from the supply ordering window You can order replacement toner cartridge s from online Advanced settings user interface overview The advanced user interface is int...

Page 70: ...eady mode and experiencing no errors or warnings Warning The machine is in a state where a soft error has occurred For example a toner low status which may lead to toner empty status Error The machine...

Page 71: ...sh Click this icon the Smart Panel icon on the menu bar Linux Double click the Smart Panel icon in the Notification Area 1 Toner Level You can view the level of toner remaining in each toner cartridge...

Page 72: ...ting Changing Smart Panel s settings Right click in Linux or in Mac OS X click on the Smart Panel icon and select Options Select the settings you want from the Options window 4 13 Copyright 1995 2016...

Page 73: ...firmware by using the USB port Upgrading preparations usblist2 exe Tool which sends firmware data to printer Firmware file to update Upgrade Procedure 1 Turn the machine off 2 Connect USB cable to pri...

Page 74: ...in 2 Log in Admin Mode ID admin PW sec00000 CAUTION Please change SWS Default ID and Password for system security in case of your first connection NOTE If the machine supports Direct Print you can ena...

Page 75: ...ing 5 SyncThru will check verify firmware file and compare version and press next button 6 Machine starts upgrading SyncThru will return home page after upgrading is completed Copyright 1995 2016 SAMS...

Page 76: ...l operations 4 1 8 1 To enter the Tech Mode To enter the Tech Mode press Menu Up Left OK Right Stop Menu in sequence and the LCD briefly displays Tech Mode the machine has entered service tech mode 1...

Page 77: ...Substitution On Menu Map Printing Supplies info Printing Event Log Printing ACR Reprot Printing Job Duty Report Printing Report ID Control History Printing NVM Read Write NVM Initialization Initialize...

Page 78: ...g up level the machine notify user of toner low Paper Substitution Between A4 and Letter size paper print job can be executed without paper mismatch message when the setting value is On 2 Report Suppl...

Page 79: ...fer DC normal voltage control duty 0040 THV Low Y 10 10 0 Set up the yellow transfer DC low voltage control duty 0050 THV Low M 10 10 0 Set up the magenta transfer DC low voltage control duty 0060 THV...

Page 80: ...normal speed 0000 MP Feed Clutch Engages drive to pick up a paper from bypass Tray MP Tray 0010 Tray1 Pickup Engages drive to pick up a paper from tray1 0020 Tray2 Pickup Engages drive to pick up a pa...

Page 81: ...n at normal drive level 0031 K Dev AC Black Dev bias AC voltage on at normal drive level 0032 C Dev AC Cyan Dev bias AC voltage on at normal drive level 0033 M Dev AC Magenta Dev bias AC voltage on at...

Page 82: ...Run LSU Motor2 On Off 0080 LD Power 1 LSU LD1 enable On Off yellow 0090 LD Power 2 LSU LD2 enable On Off magenta 0100 LD Power 3 LSU LD3 enable On Off cyan 110 LSU 0110 LD Power 4 LSU LD4 enable On O...

Page 83: ...description of the problem from the customer Power On Red LED on Error message is displayed OPE LED Green OK Print test pattern printing Quality is Nomal Refer to So lution of Image Pro blem See the...

Page 84: ...urs 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...

Page 85: ...ridge P 4 35 C2 3120 Replace new M toner Replace with new magenta toner cartridge P 4 36 C2 3140 Replace new M toner End of life Replace with new magenta toner cartridge P 4 36 C2 3150 Replace new M t...

Page 86: ...Load paper P 4 46 M1 1110 Paper Jam in Tray 1 P 4 47 M1 1610 Paper Jam in MP tray P 4 49 M1 3122 Tray1 cassette Out Tray1 cassette is pulled out Insert it properly P 4 50 M1 5112 Paper Empty in tray1...

Page 87: ...ists refer to the following 1 Turn the machine off Check if there are any papers or foreign matter inside the machine 2 Check if the Main BLDC motor connector is connected properly Reconnect it 3 If t...

Page 88: ...sts refer to the following 1 Turn the machine off Check if there are any papers or foreign matter inside the machine 2 Check if the Fuser BLDC motor connector is connected properly Reconnect it 3 If t...

Page 89: ...ists refer to the following 1 Turn the machine off Check if there are any papers or foreign matter inside the machine 2 Check if the DEVE BLDC motor connector is connected properly Reconnect it 3 If t...

Page 90: ...work Troubleshooting method First turn the machine off then on If the error persists refer to the following 1 Check if the fan connector on Main board is connected properly 2 If the fan is defective...

Page 91: ...the fuser unit and main board SMPS Triac Abnormal Short Case2 Replace the fuser unit and SMPS Normal Contact Case3 Replace the fuser unit and main board Check the SMPS Triac Thermistor Abnormal Non Co...

Page 92: ...ve 4 screws b Lift the fuser unit up while pushing the lever c Check if the thermistor contacts the heat roller surface 2 Check the SMPS Triac Measure the resistance value on each checking points with...

Page 94: ...10 C2 4110 C2 5110 Error message Prepare new Y toner Prepare new yellow toner cartridge Prepare new M toner Prepare new magenta toner cartridge Prepare new C toner Prepare new cyan toner cartridge Pre...

Page 95: ...th new magenta toner cartridge Replace new C toner Replace with new cyan toner cartridge Replace new C toner End of life Replace with new cyan toner cartridge Replace new C toner Replace with new cyan...

Page 96: ...r cartridge is not installed Install toner K toner not installed Black toner cartridge is not installed Install it Symptom The toner cartridge is not installed properly Troubleshooting method 1 Open t...

Page 97: ...ible Check guide C toner Not compatible Cyan toner cartridge is not compatible Check guide K toner not compatible Black toner cartridge is not compatible Check guide Symptom The toner cartridge is not...

Page 98: ...k the PTB Paper Transfer Belt unit life 2 If its life is at the end replace the PTB unit with new one Error Code C4 1210 C4 1412 Error message Error C4 1210 PTB Unit Failure C4 1210 Install paper tran...

Page 99: ...unit Prepare new fuser unit Replace Fuser unit Replace with new fuser unit Symptom The fuser unit is at the end of its life Troubleshooting method 1 Open the top cover Remove 4 screws 2 Lift the fuse...

Page 100: ...ce the retard roller with new one Refer to 3 3 3 Retard roller Error Code C9 1125 C9 1135 Error message Replace retard roller Replace with new Tray2 retard roller Replace retard roller Replace with ne...

Page 101: ...Replace with new dust cleaning kit Symptom Dust cleaning kit is at the end of its life Troubleshooting method 1 Open the front cover 2 Remove the PTB unit 3 Replace the dust cleaning kit with new one...

Page 102: ...jammed paper from the corresponding tray If the problem persists check the followings 2 Check if the paper is loaded in the optional tray properly 3 Check if the forward and pick up rollers are defec...

Page 103: ...ed properly 7 Check if the Press D cut of the Gear Lifting is broken 8 If the problem persists after checking No 1 7 replace the SCF main board 9 If the problem persists after replace the SCF main boa...

Page 104: ...tte Out Symptom A optional tray cassette is pulled out Troubleshooting method 1 Check if the optional cassette is inserted properly Remove the cassette then re install it 2 Check if the Signal Switch...

Page 105: ...in the optional cassette is empty Troubleshooting method 1 Check if the paper in optional cassette is loaded Load the paper 2 Check if the Empty actuator and Empty sensor work properly 3 If the Empty...

Page 106: ...the following 2 Check if the paper guide is adjusted properly 3 Check if the Pickup Feed Retard rollers are contaminated or worn out Clean or replace it if necessary 4 Check if there are any obstacle...

Page 107: ...HVPS board is connected properly 8 Check if the Actuator Feed works normally If the actuator is defective replace it If the feed sensor is defective replace it 9 Check if the Knock up plate in the tr...

Page 108: ...jammed paper in the MP tray remove it If the problem persists check the following 2 Check if the MP empty sensor connector is connected properly Reconnect it 3 If the pick up roller doesn t rotate re...

Page 109: ...talled Tray 1 cassette is installed but error message is displayed Troubleshooting method 1 Take out the tray 1 Then reinstall it 2 Check if the Feed sensor connector is connected properly Reconnect i...

Page 110: ...sage is displayed Troubleshooting method 1 If there is no paper in tray1 load paper 2 Check if the Paper empty sensor connector is connected properly 3 If the Paper empty sensor is defective replace i...

Page 111: ...Tray but error message is displayed Troubleshooting method 1 Check if the MP paper empty sensor connector is connected properly 2 If the MP paper empty sensor is defective replace it 3 Check if the M...

Page 112: ...the Spring tension of the Regi roller and Regi shaft If the spring is defective replace it 2 Reconnect the flat cable exit sensor harness Feed sensor harness 3 If the connection is OK check the actuat...

Page 113: ...the jammed paper 2 If the paper is not reached to the duplex path after the exit sensor sensing check the Clutch BK deve If it is defective replace it 3 Check if the Exit actuator work normally Check...

Page 114: ...ea Troubleshooting method 1 Remove the jammed paper from the exit area 2 Check if the flat cable and exit sensor connectors are connected correctly Reconnect it 3 Check if the fuser actuator and exit...

Page 115: ...r is defective Troubleshooting method 1 Remove the paper on the output bin 2 Check if the CN3 connector on Main board is connected correctly 3 Check if the Actuator Stacker Actuator OutFull and Bin fu...

Page 116: ...rror Code S2 4121 Error message Door is open or Check Transfer belt Symptom Front cover or Top cover is open Troubleshooting method 1 Close the front cover and top cover perfectly 2 If the PTB unit is...

Page 117: ...method Check if the Authentication method is selected properly Check if the User Name Password is entered properly Error Code U2 6133 U2 6134 Error message Error U2 6133 LSU Unit Failure U2 6133 Turn...

Page 118: ...rn off then on Symptom LSU H sync signal is abnormal Troubleshooting method First turn the machine off then on If the error persists refer to the following 1 Check if the LSU connector on the main boa...

Page 119: ...PTB unit or replace the PTB unit Check if paper transfer belt is damaged or contaminated Replace the PTB unit and test again 2 Vertical White Line Description White vertical voids in the image Cause...

Page 120: ...or replace the dirty roller Dirty PTB belt or damaged PTB belt Clean PTB or replace the PTB unit Dirty feed guide or any paper delivery guide Clean the part which cause the contamination 4 Dark or Bl...

Page 121: ...ty is uneven between left and right Cause and Check Point Solution The pressure force in the left and right springs of the transfer roller is not even the springs are damaged the transfer roller is im...

Page 122: ...n the gap ring or replace it Or replace the toner cartridge Bad contacts of HV terminals of the toner cartridge with high voltage terminals from printer set Clean all HV terminals in the cartridge and...

Page 123: ...contaminated roller with soft cloth with Isopropyl Alcohol 2 No power Description When system power is turned on the printer does not warm up or LCD panel is blank Cause and Check Point Solution Chec...

Page 124: ...s ize Sens or Cas s ette MP Pickup Solenoid MP Empty Sens or 24V1 24V2 24V3 5V_SMPS DEVICE USB RESET IC DC Converter Regulator SCL0_C4 SDA0_C4 ADDR DATA GIGA BIT RTL8211D 1WMICOM n POWER_OFF 5V n KEY_...

Page 125: ...C C D D D D Y K C M LSU 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 Y C K M LSU BLDC motor FUSER FAN RJ45 GND GND N C nC MD_R EQ _S C F SC F _RXD nR ST _S C F 3 3V 24 V_ 3 24 V_ 3 GND GND GND IF _SC F nBU...

Page 126: ...and easy troubleshooting as described in this service manual DVM Digital Volt Meter Standard Indicates more than 3 digits Cleaning Equipments Standard An IPA Isopropyl Alcohol dry wipe tissue or a ge...

Page 127: ...e Device Discovery Software Samsung equivalent of Samsung s SyncThru IQ Image Quality CWIS Center Ware Internet Services ITU International Telecommunication Union DADF Duplex Auto Document Feeder DADH...

Page 128: ...col NIC Network Interface Card NOS Network Operating System TCP IP Transmission Control Protocol Internet Protocol TBC or tbc To Be Confirmed NN Normal Temperature Normal Humidity Testing Chamber cond...

Page 129: ...t 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 LOW...

Page 130: ...OPE Operation Panel Control Panel KEY M COPY M Mold PLATE M ALPHA KEY M Molde ALPHA Alphabet PMO GUIDE DP SIDE DP Duplex RING CS CS Compress GEAR MP DUP DRV MP Multi Purpose Bypass tray DUP DRV Duplex...

Page 131: ...igh Voltage CBF HARNESS MAIN MHV WIRE MHV High Voltage Charge Voltage GEAR EXIT U ID U Upper ID Idler IPR TERMINAL FU FU Fuser PMO BEARING H R F H R F Heat Roller Front BEARING H R L H R L Heat Roller...

Page 132: ...6 3 The Sample Pattern for the Test The life of the toner cartridge and the printing speed are measured using the pattern shown below 6 3 1 A4 ISO 19798 Standard Pattern 6 7 Copyright 1995 2016 SAMSU...

Page 133: ...ilated 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 326 mm enough space so that the paper tra...

Page 134: ...a Japan https gspn2 samsungcsportal com N America S America https gspn3 samsungcsportal com This Service Manual is a property of Samsung Electronics Co Ltd Any unauthorized use of Manual can be punish...

Search results

Summary of Contents for CLP-775ND

Reviews:

Related manuals for CLP-775ND

Brands by name

Popular brands

Samsung CLP-775ND, Service Manual

Search results

Summary of Contents for CLP-775ND

Reviews:

Related manuals for CLP-775ND

Brands by name

Popular brands