Samsung Office Master SCX-5312F Service Manual Download

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DIGITAL LASER MFP

SCX-5312F
SCX-5112

1. Precautions

2. Specifications

3. Disassembly

4. Troubleshooting

5. Exploded Views and Parts List

6. Block Diagram

7. Connection Diagram

DIGITAL LASER MFP

CONTENTS

SERVICE

MANUAL

Summary of Contents for Office Master SCX-5312F

Page 1: ...TAL LASER MFP SCX 5312F SCX 5112 1 Precautions 2 Specifications 3 Disassembly 4 Troubleshooting 5 Exploded Views and Parts List 6 Block Diagram 7 Connection Diagram DIGITAL LASER MFP CONTENTS SERVICE MANUAL ...

Page 2: ...ICS This service manual is also provided on the web the ITSELF system Samsung Electronics Co Ltd http itself sec samsung co kr Samsung Electronics Co Ltd MAY 2002 Printed in Korea VERSION NO 1 02 CODE JC 0061A ...

Page 3: ... of the information in this manual are prohibited from free duplication use or translation without prior written approval except in cases allowed by the Copyright Act Specifications are subject to change without prior notice Copyright c 2002 5 Samsung Electronics Digital Printing CS Group ...

Page 4: ...holds true even though the replacement may be rated for higher voltage wattage etc 8 Components critical for safety are indicated in the parts list with symbols Use only replacement components that have the same ratings especially for flame resistance and dielectric specifications A replacement part that does not have the same safety characteristics as the original may create shock fire or other s...

Page 5: ...charges suffi cient to damage ESDs 5 Do not use Freon propelled chemicals When sprayed these can generate electrical charges sufficient to damage ESDs 6 Do not remove a replacement ESD from its pro tective packaging until immediately before install ing it Most replacement ESDs are packaged with all leads shorted together by conductive foam aluminum foil or a comparable conductive material 7 Immedi...

Page 6: ...t Standard For general home use small type 2 Electronic Scale Standard Equipment to check the weight of consum ables toner cartridge supplied by Samsung Electron ics The gram unit can be measured 5 Cotton Swab Standard For general home use for medical service 6 Cleaning Equipments a IPA Isopropyl Alcohol dry cloth or a soft stuff neutral detergent 7 Software Driver installation CD ROM Note Mind yo...

Page 7: ...on Temperature 20 C 40 C Humidity 10 RH 95 RH Operating Condition Temperature 10 C 32 C Humidity 20 RH 80 RH Recommended Operating Condition Temperature 16 C 30 C Humidity 30 RH 70 RH Dimension W X D X H 560 X 433 X 459 mm Weight About 22 5 Kg with CRU Acoustic Noise Less than 56 47 dB Copy Printing mode Power Rating AC 100VAC 127VAC 15 50 60Hz 3Hz AC 220VAC 240VAC 15 50 60Hz 3Hz Power Consumption...

Page 8: ... Side Out Paper Capacity Input Cassette 550 Sheets By Pass Tray 100 Sheets based on 75g ß 20lb Paper Capacity Output Face Down 250 Sheets Effective Print Width 203 1mm 8 inch Item Description Standard Recommendation ITU T Group3 ITU International Telecommunications Union Application Circuit PSTN or behind PABX PSTN Public Switched Telephone Network PABX Private Automatic Branch Exchange Data codin...

Page 9: ...P Support USB without HUB Mode Compatibility TWAIN Standard WIA Optical Resolution H X V 600 X 600 dpi Interpolation Resolution Max 4800 dpi Halftone 256 Levels Effective Scan width 8 2 inches 208 mm Item Description Mode B W Quality Text Photo Mixed Mono Copy Speed 1 Platen SDMP 12 cpm ADF SDMP 12 cpm ADF MDSP Text mixed Approx 7 cpm Photo Approx 3 cpm Optical Resolution H x V 600 X 600 dpi Multi...

Page 10: ...ion 1Touch Dial 40EA 1 20 shift key 21 40 Speed Dial 80EA Tone Pulse Tone only user modeTone Pulse selectable in tech mode Item Description Type Separate type Toner Cartridge Drum Cartridge Life Toner Cartridge 6 000 sheets 5 coverage pattern simplex normal mode Drum Cartridge 15 000 sheets simplex normal mode ...

Page 11: ...heir original positions Before removing any component from the machine note the cable routing that will be affected Whenever servicing the machine you must perform as follows 1 Check to verify that documents are not stored in memory 2 Unplug the power cord 3 Use a flat and clean surface 4 Replace only with authorized components 5 Do not force to remove or planten plastic material components 6 Make...

Page 12: ...the Shield Main Upper Unplug the one connector and CCD cable Notice You should connector remove the CCD cable vertically to avoid the CCD cable pin damage 3 Remove the three screws as shown below 4 Open the Side Cover assembly first to open the Front cover In the other words close the front cover first to assembly it 5 Remove two screws Shield Main Upper Side CoverAss y Front Cover 1 2 ...

Page 13: ... of arrow 7 Remove the connector from the Platen Ass y 8 Open the ADF Ass y in the direction of arrow Pull the ADF Ass y upward and remove it 9 Remove the three screws securing the Platen Ass y 10 Pull the OPE Ass y and unplug the one connector 11 Remove the five screws securing the Platen Ass y ...

Page 14: ...ssy it may cause problems in product performance and deteriorate scan image Therefore you should always dismantle or assemble it at a clean place 13 Remove the two scews and pull the Dummy Upper Ass y 14 Remove the four screws and Channel Base Frame 15 Remove the five screws and Dummy Scan Lower Dummy Upper Ass y Channel Base Frame Cover Dummy Lower Cover Scan Lower ...

Page 15: ...D cable 17 Pull up the Shaft CCD and take out the Scanner Module 18 Remove three screws and take out the Motor Bracket 19 Remove the OPE Harness from the Platen PBA Remove two screws and take out the Platen PBA Scanner Module Shaft CCD Belt Pully Platen PBA OPE Harness ...

Page 16: ...3 2 2 Remove the five screws from the Platen Cover 3 Open the Cover open and pull the Cover Side L and Cover Side R and unlatch the Side Cover L by pushing the part hooked the Platen Cover using a sharp tool 4 Pull the ADF Ass y upward and remove it 5 Tack out he Open Cover Platen CoverAss y Platen Cover Ass y Side Cover L Cover Open Side Cover R Platen CoverAss y ...

Page 17: ...Disassembly and Reassembly Samsung Electronics 3 7 6 Take out the Pick up Ass y Remove the four screws and the ADF Upper 7 Remove three screws and take out the ADF Motor ass y Pick up Ass y ADF Upper ...

Page 18: ...move Rear Cover see page 3 1 Scanner Ass y see page 3 2 2 Remove ten screws securing the OPE PBA and the LCD Module from the OPE Cover 4 Remove the key pad from the unit Caution The above information is for the SCX 5312 model For the SCX 5112 model A parts is eliminated 3 Remove the contact rubbers from the unit ...

Page 19: ...nd after pull the part to the arrow direction to the top pull the part to the arrow direction inner side 1 2 3 MP Tray 1 Pull the both side of the part to dissemble it 2 As the part make the Tray Case and the Tray Link in rectangular position to dissemble the Tray Case from the Tray Link The Tray Link locates at an angle of 45 from the Side Cover Ass y and then remove the Tray Link Tray Link Tray ...

Page 20: ...ectronics Duplex Ass y 1 Unite the part and home to the projection part of the Side Cover assembly and widen them from each other to dissemble the Side Cover Ass y DeplexAss y Transfer Roller Ass y 1 Take out the Transfer Roller as shown below ...

Page 21: ...screw and take out the Cover Sheet Connector 3 Unplug the one connector 4 Remove the three screws and take out the Fuser Ass y 6 Remove the two screws and take out the Halo gen Lamp 5 Remove the four screws and take out the Ther mostat 7 After remove the two screw and open the Lower Ass y froward tack out the Heat Roller Ass y from Upper Fuser Ass y Halogen Lamp Thermostat Heat Roller ...

Page 22: ...ews and then untile the harness from the Exit Upper Unplug four connectors and unlatch the Dummy Base Frame as shown below 3 Pull the exit ass y and remove it 3 9 Cover Paper Exit Ass y 1 Before you remove the Cover Paper Exit Ass y you should remove Rear Cover see page 3 1 Scanner Ass y see page3 2 2 Remove two screws and Cover Paper Exit Ass y as shown below Cover Paper Exit Ass y ...

Page 23: ... the Drive Ass y you should remove Rear Cover see page 3 1 Shield Main Upper see page 3 2 2 Unplug the two connectors Main Motor 9pin Duplex Solenoid 2pin 3 Remove the one screw and take out the Fan and Dust Fan 4 Remove the five screws and take out the Drive Ass y Fan Dust Fan Drive Ass y ...

Page 24: ... SMPS 1 BeforeyouremovetheLSU youshould remove Rear Cover see page 3 1 Scanner Ass y see page 3 2 Cover Paper Exit Ass y see page 3 12 2 Remove three screws and take out the Shield SMPS Upper 3 Unplug the all connectors 4 Remove the SMPS as shown below SMPS ...

Page 25: ...ics 3 15 3 12 LSU Laser Scaning Unit 1 BeforeyouremovetheLSU youshould remove Rear Cover see page 3 1 Scanner Ass y see page 3 2 Cover Paper Exit Ass y see page 3 12 2 Unplug the two connectors 3 Remove the three screws and take out the LSU LSU ...

Page 26: ... Cover Exit Rear you should remove Rear Cover see page 3 1 Scanner Ass y see page 3 2 Exit Ass y see page 3 12 Cover Paper Exit Ass y see page 3 12 SMPS see page 3 14 2 Remove the one screw and take out the Panel Connect MPF 3 Remove the one screw and Cover Exit Rear as shown below Cover Exit Rear ...

Page 27: ...e 3 14 LSU see page 3 15 2 Remove one screw in the Channel Base Frame from the bellow section of the Base Frame and then remove the rest of the five screws to dis semble the Dummy Base Frame the Cover Front and the Cam Jam Remove 3 Remove the Locker Deve and then remove the one screw and the Cover Motor Bracket 4 Unplug the all connectors 5 Remove the seven screws and take out the Main Frame Ass y...

Page 28: ...ss y you should remove Rear Cover see page 3 1 Shield Main Upper see page 3 2 Side Cover Ass y see page 3 9 2 Unplug the two connectors 3 Remove the one screw and take out the Dummy Cover 4 remove the three screws 5 Release the SMPS fit Pull the MP Ass y upward and remove it Dummy Cover MP Ass y ...

Page 29: ...y you should remove Rear Cover see page 3 1 Scanner Ass y see page 3 2 Side Cover Ass y see page 3 9 Exit Ass y see page 3 12 Cover Paper Exit Ass y see page 3 12 LSU see page 3 15 Main Frame Ass y see page 3 17 2 Remove the three screws 3 Pull the Feed Ass y upward and remove it Feed Ass y Feed Ass y ...

Page 30: ...Ass y you should remove Rear Cover see page 3 1 Shield Main Upper see page 3 2 Drive Ass y see page 3 13 2 Unplug the three connectors 3 Remove the two screws and take out the Cas sette Rail 4 Remove the four screws and take out the Pick Up Ass y as shown below Cassette Rail Pick up Ass y Guide Paper Out ...

Page 31: ...Ass y see page 3 9 Cover Paper Exit Ass y see page 3 12 SMPS see page 3 14 2 Remove the two screws and take out the Shield Main Lower 3 Remove the five screws and take out the main PBA from the Shield Main Lower 4 Remove the one screw and unlatch the LIU PBA securing the main PBA and remove it Shield Main Lower Main PBA LIU PBA Only SCX 5312F Main PBA ...

Page 32: ...rdized for the SCX 5312F The information about the fax function is not applied for the SCX 5112 The differences by each model are explained in a separate way 4 1 Preventative Maintenance The cycle period outlined below is a general guideline for maintenance The example list is for an average usage of 50 transmitted and received documents per day Environmental conditions and actual use will vary th...

Page 33: ...mory becomes available or split the transmission into more than one operation NO ANSWER The remote machine was not answered after all the redial attempts Try again Make sure the remote machine is OK NO NOT ASSIGNED The speed dial location you tried to use has no number assigned to it Dial the number manually with the key pad or assign the number NO PAPER ADD PAPER The recording paper has run out T...

Page 34: ...ed the duplex jam in the middle of machine Clear the jam LINE BUSY The remote FAX didn t answer Try again OPEN HEAT EROR Thermister does not connected to main board or contact point is not coupled tightly in power on Check thermister contact point Heating Camp Thermostat Heating Error During operation Temperatare does not go up Check thermister contact point Heating Lamp Scanner Locked Scanner is ...

Page 35: ... OFF ECM MODE ON OFF RX REDUCTION ON OFF DISCARD SIZE 0 30mm REDIAL INTERVAL 1 15 REDIALS 1 13 ANSWER ON RING 1 7 SEND FROM MEMORY ON OFF LOCAL ID ON OFF CLOCK MODE 12 24 HOUR SYSTEM ID FAX ID DATE TIME SYSTEM SETUP PREFIX DIAL NO RINGER VOLUME LOW HIGH 10 STEPS ALARM SOUND ON OFF KEY SOUND ON OFF SPEAKER CONTROL COM ON OFF SELECT LANGUAGE ENG GER FRE ITA SPA POR DUT USB MODE FAST SLOW FAX DUPLEX ...

Page 36: ...To return to normal user mode press MENU 1 9 3 4 in sequence again or turn the power off then on by unplugging and plugging the power cord Options changed while in service mode do not remain changed unless you clear the machine s memory TX CONFIRM SCHEDULE JOB PHONE BOOK SYSTEM LIST TX JOURNAL RX JOURNAL HELP LIST HELP LIST Function Item Content SYSTEM DATA CASSETTE PAPER LETTER A4 LEGAL BYPASS PA...

Page 37: ...e same as User Mode ADD CANCEL The same as User Mode GROUP DIAL The same as User Mode MAINTENANCE CLEAN DRUM NEW DRUM NOTIFY TONER LOW ON OFF SWITCH TEST MODEM TEST SRAM TEST DRAM TEST ROM TEST FLASH ENGINE PATTERN TEST PATTERN1 7 QAPATTERN1 4 ALL 1 7 ALL CLEAR COUNT PASSWORD CRU PRINTS COUNT FLT SCAN COUNT ADF SCAN COUNT USED DRUM COUNT USED TONER COUNT TOTAL PAGE COUNT ANSWER ON CNG 1 4 ADJUST S...

Page 38: ...ER LETTER A4 LEGAL POWER SAVE ON OFF SELECT LANGUAGE ENG GER FRE ITA SPA POR DUT USB MODE FAST SLOW MAINTENANCE CLEAN DRUM MODEM TEST NEW DRUM SWITCH TEST SRAM TEST DRAM TEST ROM TEST FLASH ENGINE PATTERN TEST PATTERN1 7 QAPATTERN1 4 ALL CLEAR COUNT PASSWORD CRU PRINTS COUNT FLT SCAN COUNT ADF SCAN COUNT USED DRUM COUNT USED TONER COUNT TOTAL PAGE COUNT ADJUST SHADING FLASH UPGRADE REPORTS SYSTEM ...

Page 39: ...ment from factory Never change settings arbitrarily ERROR RATE When the error rate is about to be over the setting value the Baud rate automatically lowers up to 2400 bps to make the error rate remain below the setting value You can select the rate between 5 and 10 MODEM SPEED You can set the maximum modem speed Communication is done with modem speed automatically set at lower speed when communica...

Page 40: ... More information can be found in the firmware upgrade items ADJUST SHADING The function is to control to get the optimum scan quality by the specific character of the CCD Charge Cou pled Device If the copy image quality is unsatisfied perform the function to check the condition of the print out for checking whether or not having CCD trouble Method 1 Select the ADJUST SHADING at the TECH MODE 2 Pu...

Page 41: ...0V DRAM TEST Use this feature to test the machine s DRAM The result appears in the LCD display If all memory is working normally the LCD shows O K SRAM TEST Use this feature to test the machine s SRAM The result appears in the LCD display If all memory is working normally the LCD shows O K MODEM TEST Use this feature to hear various transmission signals to the telephone line from the modem and to ...

Page 42: ...receiving operation Use this list to check for send and receive errors If a communication error occurs while the machine is in TECH mode the protocol list will print automatically HELP It shows a brief description on the machine s basic functions and commands Use it as a quick reference guide S NSF 61005820003380140200001302090018010000 S R FCF FIF DATA ASCII S CSI 2020202020202020202020202O202020...

Page 43: ...ides the operation number starting time type of operation etc ERROR CODE It shows error history occurred using product 4 4 7 Firmware Upgrade It is a new Firmware and there are two Upgrade methods by local and remote 4 4 7 1 Local Machine RCP Remote Control Panel mode This method is for Parallel Port or USB Port Connect to PC and activate RCP Remote Control Panel to upgrade the Firmware Method How...

Page 44: ...SH UPGRADE REMOTE 2 Input the fax number which needs to be upgraded Several faxes can be upgrade at the same time In this case enter the each fax number 3 After push the enter button send the firmware file by calling to the appointed number Around 10 15 minutes needs to send the file Caution 1 sending and receiving fax must be the same model 2 A sending fax must be set up as ECM mode and a receivi...

Page 45: ... Standby the fuser is off On 2 Off 1 1 LSU Motor Test 1 On 2 Off 2 LSU Hsync Test 1 On 2 Off 3 LD On Test 1 On 2 Off 4 LSU Operation 1 On 2 Off 2 1 Feed Sensor Test Sensor On FEED SENSOR ON Display Sensor Off FEED SENSOR OFF Display 2 Exit Sensor Test Sensor On EXIT SENSOR ON Display Sensor Off EXIT SENSOR OFF Display 3 Cover Sensor Test Sensor On COVER SENSOR ON Display Sensor Off COVER SENSOR OF...

Page 46: ... for G Black copy Check the CCD problem in Main PBA Check the CCD harness contact Check shading profile Remake shading profile in the tech mode Check the CCD problem in Main PBA If the CCD is defective replace it Cn3 19 is 7 3V when idle for R B and 5V for G Defective image quality Check shading profile Remake shading profile in the tech mode Check the gap between original and scan ner glass The g...

Page 47: ...t in Main PBA Check the IEEE1284 signal level If any signal level is defective replace Driver PBA U36 66 74 in Main PBA 0 8V to 2 4V TTL signal Otherwise replace Main PBA Check the USB signal level If USB signal level is defective replace Main PBA Defective image Quality Check shading profile Remake shading profile in the tech mode Check the gap between original and scan ner glass The gap above 0 ...

Page 48: ... of CN20 11 of MAIN PBA and the circuit around R15 U6 and Q2 of Liu PBA Replace LIU PBA Defective fax transmis sion Check CN20 main PBA MAIN LIU harness and CN1 LIU PBA Is the external phone hooked off Check hook off Refer to TEL LINE CANNOT BE ENGAGED above Check the control signals of CN20 11 Check transmission path Check output of CN20 3 4 and T2 4 LIU PBA Check reception path Check output CN1 ...

Page 49: ...eplace Main PBA Light image 1 Check seal tape removing 2 LSU light power normal 3 Enough toner 4 High charger voltage 5 Lower bias voltage 6 Contamination of high voltage contact 7 Transfer volatge and roller 1 Check and remove tape 2 LSU light power check is difficult Compare with new one and check 3 Check toner and developer counter 4 5 Measure all high voltage output 6 Leakage toner cause bad c...

Page 50: ...Remove fuser and replace it Poor Fusing 1 Use recommended paper 2 Check fusing temperature 3 The machine was under the low tempera ture for a long time 1 Should use recommended paper 2 Check engine controller board If you have not thermometer measure the thermistor voltage to CPU If 2 3V 5 in printing CPU works well Then disas semble fuser and check the thermistor contact and thermistor 3 Re check...

Page 51: ...ransfer roller and the spring pressing the developer inside the machine Horizonral band 1 Unstable high voltage contact 2 Charge roller s contamination 3 Contamination of heat roller 4 Malfunction of LSU 1 Clean each contact and check good con tact 2 Clean charge roller 3 Replace fuser unit 4 Check Main PBA NO Roller Abnormal image period Kind of abnormal image 1 OPC Drum 94 3 mm White spot Black ...

Page 52: ... LSU might be misplaced so the light path to the OPC deviates Repair or replace LSU or remove any defective matters in the machine Self test pattern prints No image Self testing is possible Is the OPC terminal of machine is well connected to Frame Does the video data line to LSU transit to High Low when printing Retest after replacing the connector or controller board Aon nextpage NO NO NO NO NO Y...

Page 53: ...window A Transfer voltage OK on the transfer roller shaft Are the connection terminal and connection correct Repair or replace terminal Replace HVPS or repair defective component Is the connection terminal OK Replace HVPS or repair defective component Repair or replace terminal Developing 300V and supplying 450V voltage are OK Does the counter indicate over the toner s guaranty life Replace the to...

Page 54: ...air or replace toner cartridge Does the video data line to LSU transit to High Low when printing Replace LSU Check the path among video controller engine board HVPS LSU for the shortage or open Repair or replace the boards Repair or replace HVPS Replace LSU NO NO NO NO YES YES YES YES All Black Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer ...

Page 55: ...tuck to blade in the developer inside and it prevents toner supply Replace the developer Check both if the toner cartridge s counter is over its guaranty and amount of the toner material Replace the toner cartridge The ribs in fuser or toner on the roller may invoke the image problem Replace the fuser cover or the defective part The image is originally black or the black part is far close to the t...

Page 56: ... LSU Repair or replace the defective component The power of LSU is set high or internal problem Replace LSU or adjust volume Same at Normal END NO NO NO Toner over supply due to the adjustment fault of metering blade in developer Replace developer NO YES YES YES YES Dark Image Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer ...

Page 57: ... developer is defective Replace the toner cartridge Check Terminals or contacts and Guide Deve Spring are misplaced Repair or replace transfer roller etc Check if the LED of PTL in front of the transfer roller is on when it presses the top cover switch on purpose If not replace PTL Print 20 to 30 pages using the recommended paper Same problem occurs Adjust voltage or replace HVPS Repair or replace...

Page 58: ...ce the terminal contacts A specific part of the transfer roller has ruined or its resistance value is changed Replace transfer roller Transfer roller cannot force regularly due to the gears eccentricity of transfer roller Replace the defective component Bias voltage is OK 300V Operating storage temperature is too low or not recommended paper used Adjust the Bias voltage or replace HVPS There may b...

Page 59: ... taking out the cartridge toner leaks Toner leaks and much toner material dropped onto the paper Replace the developer Bad image removes by scratching Check toner is stuck onto the P R or H R in fuser Clean it or replace The problem randomly occurred due to the toner fallen Clean the machine NO NO NO YES YES YES Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer ...

Page 60: ...l Heat roller is ruined Replace the roller The OPC is damaged due to the irregular transfer voltage of HVPS Repair replace HVPS If the same problem persists replace the developer Does it appear at every 83mm at specific place Problems of terminal contact transfer voltage supplying and transfer roller s due to the charge roller is ruined 38mm Repair replace HVPS developer NO NO NO NO YES YES YES YE...

Page 61: ...oltage drops while printing Defective agitator in the toner supplying part of developer Replace the developer Check if the guide deve spring works OK and repair repalce Check high voltage output and repair replace terminals HVPS Replace lamp Clean the window of PTL Bad images around the no image area Irregularity of toner supply from developer Replace developer Light distortion due to the mirror r...

Page 62: ...When putting in out the developer scratch is made Replace the developer Transfer voltage is normal D R in developing unit has the defect Replace the developer Too high voltage supplied due to the setting error of transfer voltage Adjust replace HVPS NO NO YES YES White Spot Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer ...

Page 63: ... 10 films are guranteed Reduce the number of films and re insert after paper check LED if off Use the recommended film When OHP printing does the fan temporarily stops and revolves Use the recommended film Other parts are touching the fan and prevents it from revolution Check and repair NO NO NO YES YES YES Trembling at the End When OHP Printing ...

Page 64: ...ng time Place the machine at normal temperature and re test While printing the voltage of pin 60 of U36 CPU on Main PBA is 2 1V 2 6V Thermistor s contact is OK Open the top cover When black printing is the fuser NIP width is 3 0 3 5mm The paper used is too thick or contains too much cotton in it Re test with the recommended paper Check if the hardness of P R and spring force is OK hardness 24 degr...

Page 65: ...6 Does not the Guide Adjust distort the papers 1 Check whether solenoid is working or not by using Engine test mode 2 Check feed sensor malfunction 3 Re try inserting a fewer papers fan the papers and align take out the loaded papers and insert them reverse direction 4 Take out the loaded papers and insert them reverse direction inserted papers as recommended for Manual Feeding When loading tap th...

Page 66: ...HVPS and change it Feeding obstacles Does the Plate knockup prevent the paper loading MPF Turn the power off and on Open and close the Side cover to return to the original state Cassette Adjust Guide to fit the paper width Skew Is the Guide adjust set to the paper width Fit the paper width using the Guide adjust Stacking 1 Took out the Stacker extender to support long papers 2 Stacked too many pap...

Page 67: ... board are OK Re connect firmly and re test The connection error between controller board and panel board or malfunction of boards Replace the boards Fuse of SMPS if open Shortage between 5V and GND or between 24V and GND Replace the fuse Toner cartridge is in the set Detect failure due to the board which detects side cover open or switch error Replace the board or switch Put in the cartridge Remo...

Page 68: ...e to the heat etc Replace the thermostat The voltage of pin 6 of U5 on the Main PBA is about 3 2V If not check the CN4 on the power board Measure the resistance at the both ends of AC Line with covers open Remove the covers Re assemble the top cover and close it Thermistor connecting point or engine board defect Repair replace the component board NO NO NO YES YES YES Fuser Error ...

Page 69: ...t Feeder sensor is assembled reverse Switch them The sensor and Main PBA defected Repair replace Too many papers in the feeder Paper guides fit the paper width Paper end curled Does the extender pulled out Recommendation Use the MPF for the thick paper such as envelope and cardstock Reduce the amount and re test Take out the paper and re insert Use the recommended and quality paper Pull out the ex...

Page 70: ... the recommended paper Check guide transfer is grounded Check the shutter prevents feeding Check the input path to the fuser such as mis assembly The actuator of paper exit sensor works OK Check the actuator exists and its operation and around the Main PBA Replace Is the paper rolled around the presseure roller Remove the fuser remove the paper and replace the pressure roller if necessary Feeds mu...

Page 71: ... Main B D CN7 9 P_MOTOR Signal Check Main B D CN7 8 LREADY Signal END Try again to connector or Replace connector Replace Main PBA Replace LSU Replace Main PBA Replace LSU NO NO NO NO NO YES YES YES YES YES Check Main B D CN7 4 LDON Signal Check Main B D CN7 1 HSYNC Signal Engine Error ...

Page 72: ...an a few minutes may cause damage to the cartridge Service for the Life of Toner Cartridge If the printed image is light due to the life of the toner you can temporarily improve the print quality by redis tributing the toner Shake the toner cartridge however you should replace the toner cartridge to solve the problem thoroughly Service for Judgement of Inferior Expendables and the Standard of Guar...

Page 73: ...f the life span 2 In case of 2 If it becomes better after cleaning the LSU window then the developer is nor mal Because of foreign substance on the LSU window the image has not been printed partly 3 In case of 3 If the cycle of noise is about 2 seconds the toner inside the developer has been nearly exhausted Purchase and replace with a new developer after using about 200 sheets at the point of occ...

Page 74: ...ace the developer at intervals of 37 7mm Remove foreign substance Clean the Charged Roller Broken image Replace the developer according to carelessness 3 In case of 3 Exchange the transfer roller because the life of the transfer roller in use has been expired Check the transfer voltage and readjust if different Recycled product Poor appearance of the developer Unclean and rough printouts Bad backg...

Page 75: ...stances are stuck to the termi nal point of contact of the developer and the state of assembly Especially check the charged roller terminal 1 All of 1 2 3 above 1 Remove toner and foreign substances adhered to the contact point of the developer 2 The contact point of the unit facing that of the developer also must be cleaned 3 If the terminal assembly is unsafe Fully stick the terminal to or reass...

Page 76: ...printer first the remove the scanner from the PC to see if the printer is prop erly working alone Check and Cause Solution 1 Secure more space of the hard disk 2 Printing error occurs even if there is enough space in the hard disk 3 Check the parallel port related items in the CMOS Setup 4 Reboot the system to print 1 Not working with the message insufficient printer memory means hard disk space p...

Page 77: ... Windows to restart printing job 3 Shut down all other programs except the current one if pos sible 4 Delete the printer driver completely and reinstall it 5 After rebooting the computer check for viruses restore the damaged files and reinstall the program to do the printing job 6 Add up enough memory to the PC Description The printing is not working properly even when the cable has no problem eve...

Page 78: ...689F PMO COVER OPE C JC72 00796C PCT ONETOUCH PAPER JC72 00872C PCT LCD WINDOW JC72 00870C PMO COVER DUMMY OPE M JC72 00858C PBA SUB LIU JC92 01355E SCX 5312F XEF DESCRIPTION SEC CODE AS SCANNER ASS Y FRU JC81 00691C AS PLATEN ASS Y FRU JC81 00690E AS OPE COVER ASS Y FRU JC81 00689E PMO COVER OPE C JC72 00796D PCT ONETOUCH PAPER JC72 00872D PCT LCD WINDOW JC72 00870D PMO COVER DUMMY OPE M JC72 008...

Page 79: ...00796G PCT ONETOUCH PAPER JC72 00872G PCT LCD WINDOW JC72 00870G PMO COVER DUMMY OPE M JC72 00858G PBA SUB LIU JC92 01355A SCX 5312F XSA DESCRIPTION SEC CODE AS SCANNER ASS Y FRU JC81 00691A AS PLATEN ASS Y FRU JC81 00690A AS OPE COVER ASS Y FRU JC81 00689A PMO COVER OPE C JC72 00796A PCT ONETOUCH PAPER JC72 00872A PCT LCD WINDOW JC72 00870A PMO COVER DUMMY OPE M JC72 00858A PBA SUB LIU JC92 01355...

Page 80: ...Cassette Ass y Exploded View Parts List page 5 14 5 6 Exit Ass y Exploded View Parts List page 5 16 5 7 Feeder Ass y Exploded View Parts List page 5 18 5 8 MP Ass y Exploded View Parts List page 5 20 5 9 Base Frame Exploded View Parts List page 5 22 5 10 Pick up Ass y Exploded View Parts List page 5 24 5 11 Drive Ass y Exploded View Parts List page 5 26 5 12 Main Frame Ass y Exploded View Parts Li...

Page 81: ...ts List 18 18 2 18 1 1 3 1 6 1 6 1 1 1 2 1 1 4 1 5 SCX 5312F SCX 5112 20 25 28 2 2 1 2 2 3 4 7 8 9 49 48 51 50 53 52 52 1 52 4 52 2 52 3 53 2 53 1 53 3 11 12 13 43 6 35 5 34 16 15 45 46 44 17 21 2 21 1 21 37 14 33 19 36 23 38 29 27 24 30 26 1 26 3 26 3 26 2 26 37 42 40 41 47 10 39 ...

Page 82: ... JC96 02183A 1 O 11 ELA HOU MP ASS Y JC96 02182A 1 O 12 ELA HOU BASE FRAME ASS Y 1 X 13 MEC FEED ASS Y JC75 00143A 1 O 14 ELA HOU FUSER 110V ASS Y JC96 02194A 1 O 110V ELA HOU FUSER 220V ASS Y JC96 02178A 1 O 220V 15 ELA HOU FRAME MAIN ASS Y JC96 02184A 1 O 16 MEC EXIT ASS Y JC97 01643A 1 O 17 ELA HOU DRIVE ASS Y JC96 02181A 1 O 18 MEA UNIT COVER REAR ASS Y JC97 01557A 1 O 18 1 PMO COVER SIMM XRX ...

Page 83: ...1 X 39 IPR SHIELD SMPS UPPER 1 X 40 IPR SHIELD MAIN UPPER 1 X 41 IPR SHIELD SIMM 1 X 42 SUPPORTER 2 X ONLY SCX 5312F 43 PMO WINDOW SENSOR DEVE 1 X 44 PMO CAM JAM REMOVE JC72 00799A 1 O 45 PMO LOCKER DEVE JC72 00805A 1 O 46 PMO LEVER JAM REMOVE JC72 00804A 1 O 47 IPR SHIELD SMPS LOWER JC70 00247A 1 O 48 GEAR PICK UP JC66 00335A 1 O 49 PMO BEARING SHAFT JC72 41191A 1 O 50 GEAR TRANSFER JC66 40947A 1...

Page 84: ... 1 1 1 1 1 1 2 1 1 4 S6 S6 1 1 3 1 2 1 1 3 1 5 1 5 2 1 5 1 1 4 S5 S5 S5 1 4 1 4 3 2 17 2 2 2 22 2 3 2 1 2 9 2 11 2 8 S6 S6 S11 2 10 2 12 2 16 2 13 2 5 2 4 2 18 2 19 2 15 2 14 2 20 2 6 2 0 S9 2 21 2 21 1 SCX 5312F SCX 5312F SCX 5112 SCX 5112 2 7 6 2 7 2 7 3 2 7 5 2 7 3 2 7 4 2 7 1 2 7 1 2 7 7 2 7 2 ...

Page 85: ...t 5 6 Samsung Electronics 3 1 3 2 3 3 3 4 3 21 3 5 3 6 3 7 3 8 3 9 3 10 3 11 3 12 3 13 3 14 3 15 3 16 3 17 3 18 3 19 3 20 3 1 3 2 3 3 3 4 3 12 3 5 3 6 3 11 3 7 3 8 3 10 3 9 3 13 3 14 SCX 5112 SCX 5312F 3 15 S6 S6 S6 S9 S6 S6 S6 S9 ...

Page 86: ...A 1 O 2 4 CBF HARNESS MAIN ENGINE JC39 00030A 1 O 2 5 CBF HARNESS DRIVER GND JB39 00065A 1 O 2 6 PBA SUB D SUB JC81 00781A 1 O 2 7 ELA HOU SCAN MOTOR ASS Y JC81 00431A 1 O 2 7 1 MOTOR SCAN 1 X 2 7 2 GEAR TIMING 1 X 2 7 3 RING E 3 X 2 7 4 GEAR REDUCTION 1 X 2 7 5 PMO HOLDER BELT 1 X 2 7 6 GEAR IDLE 1 X 2 7 7 IPR BRK MOTOR PLATEN 1 X 2 8 CBF HARNESS OPE 1 X 2 9 PMO COVER SCAN LOWER JC72 00757A 1 O 2...

Page 87: ...C72 00864A 1 O 3 15 PMO KEY SAVE T JC72 00923A 1 O 3 16 PMO KEY SAVE JC72 00867A 1 O 3 17 PMO KEY START JC72 00868A 1 O 3 18 PMO KEY STOP JC72 00869A 1 O 3 19 RMO RUBBER TEL JC73 00105A 1 O 3 20 PBA SUB OPE KOR JC92 01380B 1 O 3 21 NPR BADGE JC71 00008A 1 O NO DESCRIPTION SEC CODE Q TY SA REMARK 3 ELA HOU OPE COVER ASS Y C refer to the table 1 O 3 1 PMO OPE COVER refer to the table 1 O 3 2 PCT LCD...

Page 88: ... 2 1 4 S5 1 3 1 5 1 10 1 6 1 11 1 4 1 15 1 13 1 9 1 8 1 7 1 12 1 6 1 1 6 4 1 6 5 1 6 2 1 6 6 1 6 3 4 5 4 5 4 11 4 7 4 7 4 10 4 6 3 9 3 10 3 11 3 12 3 1 3 2 3 22 3 2 3 2 3 3 4 3 4 3 5 3 3 4 2 4 4 1 4 9 4 3 4 4 4 8 3 14 3 13 3 13 3 7 3 8 3 18 3 19 3 6 3 16 3 17 3 21 3 20 3 23 3 15 S11 S11 S11 S11 S11 S6 S6 S6 S6 S6 S6 S10 S10 S10 S6 ...

Page 89: ...DRIVE JB71 00038A 2 O 1 10 PMO COVER PLATEN JC72 00738A 1 O 1 11 PPR SPONG SHEET JC72 00751A 1 O 1 12 PPR SHEET PLATEN JC72 00750A 1 O 1 13 IPR SPRING PINCH JC70 00260A 3 O 1 14 ICT SHAFT PINCH JC70 00265A 3 O 1 15 PMO ROLL PINCH JG72 40663A 3 O 2 MEA UNIT ADF UPPER ASS Y JC97 01581A 1 O 2 1 PMO COVER ADF UPPER 1 X 2 2 PMO ADF RUBBER 1 X 2 3 PMO HOLDER ADF 1 X 2 4 RPR SPONGE ADF 1 X 2 5 SPRING ETC...

Page 90: ...18 PBA SUB ADF POSSEN JC92 01365A 1 O 3 19 PBA SUB ADF DET SEN JC92 01366A 1 O 3 20 CBF HARNESS ADF ROLLER GND JC39 00187A 1 O 3 21 CBF HARNESS DRIVER GND JB39 00065A 1 O 3 22 PMO ACTUATOR SENSOR SCAN JC72 00746A 1 O 3 23 NPR SPRING GND 1 X 4 AS ADF MOTOR AS FRU JC81 00435A 1 O 4 1 GEAR CLUTCH 29 1 X 4 2 IPR BRKT ADF MOTOR 1 X 4 3 PMO WHITE CLUTCH SUB 29 1 X 4 4 GEAR CLUTCH 39 1 X 4 5 GEAR IDLE 20...

Page 91: ...amsung Electronics 5 4 Side Cover Ass y Exploded View Parts List 10 7 7 6 12 10 6 10 1 8 10 2 10 3 10 4 10 5 10 0 5 S6 S6 S5 2 4 3 16 13 11 15 14 1 2 1 5 1 8 1 8 1 6 S6 1 10 1 13 1 10 1 11 1 9 1 9 1 3 1 3 1 7 S6 S6 1 1 11 4 1 4 1 4 17 1 9 ...

Page 92: ...2 O 1 13 CBF HARNESS SCAN GND JC39 00046A 1 O 2 IPR PLATE SAW JC70 10232A 2 O 3 PMO FEED FRAME JC72 00731A 1 O 4 PMO HOLDER SAW JC72 41213A 1 O 5 IPR BRACKET GUIDE A JC70 00229A 1 O 6 PMO LOCKER SIDE R JC72 00763A 1 O 7 PMO LOCKER OPEN JC72 00762A 1 O 8 SPRING LOCKER TORSION JC61 00479A 1 O 9 SPRING FEED JC61 00478A 2 O 10 MEC UNIT TRAY ASS Y JC97 01577A 1 O 10 1 PMO TRAY CASE MP 1 X 10 2 PMO TRAY...

Page 93: ...Exploded Views and Parts List 5 14 Samsung Electronics 5 5 Cassette Ass y Exploded View Parts List 0 3 11 13 13 7 S6 8 2 1 6 10 4 9 16 12 5 14 15 ...

Page 94: ...1 X 4 IPR SPR PLT G SIDE JC70 10929A 1 O 5 PMO COVER CASSETTE C 1 X 6 PMO FRAME CASSETTE 1 X 7 PMO GUIDE FRONT CST 1 X 8 PMO GUIDE REAR JC72 00717A 1 O 9 PMO GUIDE SIDE CST JC72 40967D 1 O 10 PMO LOCKER PLATE JC72 41210A 1 O 11 PRP PAD CST JC73 10910A 2 O 12 SPRING LOCKER PLATE JG61 70531A 1 O 13 SPRING PLATE K UP JC61 00455A 2 O 14 LABEL R INSTRUCTION CST 1 X 15 LABEL R HEIGHT CST 1 X 16 PMO IMPA...

Page 95: ...Exploded Views and Parts List 5 16 Samsung Electronics 5 6 Exit Ass y Exploded View Parts List 7 8 5 5 10 S6 20 22 4 6 6 10 10 4 9 21 21 21 11 1 16 17 15 18 3 13 19 12 14 2 S6 ...

Page 96: ...3A 4 O 6 PMO PULLEY DUPLEX 2 X 7 BELT TIMING GEAR 1 X 8 GEAR DUPLEX 1 X 9 PMO BEARING LARGE DP 1 X BLACK 10 PMO BEARING LARGE DP JC72 40978A 3 O 11 IPR GROUND EXIT 1 X 12 ICT SHAFT EXIT LOWER ID 1 X 13 PMO ROLLER_EXIT 4 X 14 SPRING EXIT ROLL FD 2 X 15 PMO HOLDER EXIT ROLL 4 X 16 PMO ROLLER FD F 4 X 17 PMO ROLLER FD R 4 X 18 SPRING EXIT LOWER IDLE 4 X 19 MEC BRUSH ANTISTATIC JC75 00095A 1 O 20 PBA ...

Page 97: ...Exploded Views and Parts List 5 18 Samsung Electronics 5 7 Feeder Ass y Exploded View Parts List 2 17 6 5 3 7 1 4 8 S6 11 12 S6 S6 12 13 17 17 5 19 19 15 18 12 14 6 9 10 ...

Page 98: ...DRV 1 X 4 ICT SHAFT FEED 1 X 5 BEARING PICKUP 2 X 6 RING E 2 X 7 RING CS 1 X 8 PMO BRKT FEED 1 X 9 PMO ROLLER FEED JC72 00727A 1 O 10 PMO HOLDER PINCH C 1 X 11 PMO HOLDER PINCH SUB 1 X 12 PMO ROLLER FEED L 3 X 13 SPRING FEED CAST 1 X 14 PMO HOLDER PINCH M 1 X 15 PMO SUB HOLDER FEED 1 X 16 SPRING FEED MP 1 X 17 WASHER PLAIN 3 X 18 PMO ROLLER FEED S 1 X 19 IPR SHAFT FEED IDLER 4 X O Service availabl...

Page 99: ...Exploded Views and Parts List 5 20 Samsung Electronics 5 8 MP Ass y Exploded View Parts List 18 1 21 22 16 6 20 20 2 3 2 14 5 10 9 3 S5 8 4 S9 12 17 24 13 23 11 7 19 15 ...

Page 100: ...1 O 8 IPR BRACKET SOLENOIDE 1 X 9 PMO HOLDER CAM MPF 1 X 10 PMO GEAR P U MPF 1 X 11 PMO ROLLER CAM MP 1 X 12 PMO ACTUATOR MP JC72 00767A 1 O 13 PMO ADJUSTER MP JC72 00768A 1 O 14 PMO CAM PICK UP MP JC72 00769A 1 O 15 PMO FRAME MP 1 X 16 PMO HOLDER PAD MP JC72 00771A 1 O 17 PMO HOLDER SENSOR MP JC72 00772A 1 O 18 PMO HOUSING PICK UP MP 1 X 19 PMO PLATE KNOCK UP MP 1 X 20 PMO IDLE PICK UP MP JC72 41...

Page 101: ...G DEVE REAR 1 X 4 SPRING TORSION 1 X 5 FOOT RUBBER JC61 40001A 2 O 6 CAM CATCH 1 X 7 IPR CHANNEL BASE FRAME 1 X 8 IPR GROUND PLATE A OPC JC70 00240A 1 O 9 IPR GROUND PLATE B BASE JC70 00241A 1 O 10 PMO BASE FRAME 1 X 11 PMO BRACKET PUSH DEVE 2 X 12 PMO BRACKET SIDE OPEN JC72 00781A 1 O 13 PMO COVER FRONT DUMMY 1 X 14 ELA M MEDIO AUD SPEAKER JC96 01607A 1 O Only SCX 5312F O Service available X Serv...

Page 102: ...00719A 1 O 5 PMO BEARING SHAFT JC72 41191A 1 O 6 PMO BUSHING_P U MP 1 X 7 PMO FEED SENSOR 1 X 8 PMO GUIDE PAPER 1 X 9 PMO HOLDER SENSOR FEED 1 X 10 PMO LENS TONER SENSOR 1 X 11 PMO PTL PATH 1 X 12 PMO SHAFT PICK UP 1 X 13 RPR RUBBER PICK UP JC73 00086A 2 O 14 SPRING PICKUP JC61 00482A 1 O 16 PBA SUB FEED P EMP SEN JC92 01363A 1 O 17 PBA SUB PTL JC92 01361A 1 O 18 PBA SUB TONER_TX JC92 01359A 1 O 1...

Page 103: ...Exploded Views and Parts List 5 24 Samsung Electronics 5 11 Drive Ass y Exploded View Parts List S10 1 2 2 10 23 23 11 S1 S10 S10 12 13 14 23 15 23 18 17 16 23 19 20 23 21 17 22 S10 5 8 4 9 23 3 ...

Page 104: ...D DUPLEX JC33 00008A 1 O 6 SPRING SOLENOID DP 1 X 7 IPR LINK SOLENOID 1 X 8 GEAR EXIT U ID 1 X 9 GEAR SWING DRV 1 X 10 GEAR 35 19 1 X 11 GEAR 71 23 1 X 12 GEAR DEVE DRV 1 X 13 PMO DEV COUPLING 1 X 14 GEAR RDCN OPC 1 X 15 GEAR 86 23 1 X 16 GEAR RDCN FEED OUTER 1 X 17 GEAR HUB CLUTCH 2 X 18 GEAR RDCN FEED INNER 1 X 19 GEAR FEED DRV 1 X 20 GEAR OPC DRV 1 X 21 GEAR GEAR FUSER DRV OUTER 1 X 22 GEAR FUS...

Page 105: ...d Views and Parts List 5 26 Samsung Electronics 5 12 Main Frame Ass y Exploded View Parts List 31 32 12 23 S5 15 S5 21 4 11 10 9 8 6 7 3 2 5 S5 1 4 17 20 S4 18 16 26 19 S5 0 27 28 13 24 24 33 22 25 25 24 29 30 ...

Page 106: ...E MAIN 1 X 12 PMO LENS TONER SENSOR 2 X 13 IPR GND EXIT 1 X 14 IPR GND OPC 1 X 15 IPR GND OPC BASE 1 X 16 IPR GND FUSER 1 X 17 IPR GUARD C O S W 1 X 18 IPR GND TERMINAL 1 X 19 CBF HARNESS AC WIRE 1 X 20 AS SWITCH MICRO FRU JC81 00438A 1 O 21 CBF HARNESS EARTH TX MOTOR 1 X 22 PBA SUB EXIT SENSOR JC92 01364A 1 O 23 PBA SUB TONER_RX JC92 01360A 1 O 24 GEAR EXIT U ID 3 X 25 GEAR EXIT IDLE Z17 2 X 26 C...

Page 107: ...and Parts List 5 28 Samsung Electronics 5 13 FuserAss y Exploded View Parts List 24 23 23 1 23 4 23 2 18 19 16 17 17 22 15 25 26 S6 S5 21 16 20 S5 S5 13 11 S5 S5 S5 S5 10 9 1 6 7 8 6 1 6 2 14 5 4 2 3 23 3 S1 S1 10 12 ...

Page 108: ...LECTRODE GEAR 1 X 10 NPR ELECTRODE M 1 X 11 NPR ELECTRODE F 1 X 12 THERMOSTAT 4712 000001 1 O 13 THERMISTOR FUSER JC14 00001A 1 O 14 LAMP HALOGEN 110V 4713 001158 1 O 110V LAMP HALOGEN 220V 4713 001157 1 O 220V 15 PMO LOWER FUSER 1 X 16 SPRING PR 1 X 17 BEARING PRESSURE R 2 X 18 RMO ROLLER PRESSURE 1 X 19 PMO LEVER JAM R 1 X 20 PMO LEVER JAM F 1 X 21 PMO GUIDE INPUT 1 X 22 IPR GROUND FU 1 X 23 MEA...

Page 109: ...20C S4 6002 000351 SCREW TAPPING PH 2 M2 L8 ZPC YEL SM20C S5 6003 000119 SCREW TAPTITE BH B M3 L8 CBLACK SWRCH18A S6 6003 000196 SCREW TAPTITE PWH B M3 L10 NI PLT SWRCH18A S7 6003 000198 SCREW TAPTITE PWH B M3 L12 ZPC YEL SWRCH1 S8 6003 000221 SCREW TAPTITE PWH S M4 L8 ZPC YEL SWRCH18 S9 6003 000266 SCREW TAPTITE PWH S M3 L6 ZPC YEL SWRCH18 S10 6003 000269 SCREW TAPTITE BH S M3 L6 ZPC YEL SWRCH18A...

Page 110: ...HE RMISTOR FAN DEV_ID TONER_TX TONER_RX PTL SOLENOID PICK_UP DUPLEX MP PAPER SENSOR FEED P EMP EXIT MP BIN FULL COVER OPEN S W 24V 5V LIU LINE1 EXTERNAL PHONE TRANSFORMER 600 600 TX RX MODEM EXT_PHONE PAPER ATING PART EXTER NAL PHONE INTE RFACE PART LINE INTERFACE MODEM 33 6Kbps 14P UNICON USB CABLE CENTRONICS CABLE Image Processor 12bit ADC I O PORT Motor CNTR DMA I F CIP3 FAST SRAM 1Mbit MOTOR D...

Page 111: ...A 0 8 ADF _I A 1 9 ADF _PHB 10 ADF_I B 0 11 ADF_I B 1 12 MODULE _DE TECT 13 ADF_P ADF_P ADF_P _ DET 14 _P OS 15 _REGI 16 NC ADF MO TOR 1 ADF _A 2 ADF _NA 3 ADF _B 4 ADF _NB 1 5V 2 SIGN AL SIGN AL 3 GND _5 GND _5 1 5V 2 3 4 5 NC SCANNER PART DETECT SENSOR SENSOR POSI ON EXIT SENSOR 1 5V 2 S IGNAL 3 GND _5 1 T HERM1 2 T HERM2 JOI NT TYPE 1 T HERM1 2 T HERM2 DC FAN 1 24V 2 NC 3 Control 1 MTR1 MTR1 MT...

Page 112: ...Connection Diagrams 7 2 Samsung Electronics Memo ...

Page 113: ...Repair Manual Repair Manual 1 Block Diagram 2 Connection Diagram 3 Circuit Description 4 Schematic Diagrams CONTENTS Digital Laser MFP SCX 5312F SCX 5112 ...

Page 114: ......

Page 115: ...sung Electronics Digital Printing CS Group Copyright c 2001 11 This manual is made and described centering around circuit diagram and circuit description needed in the repair center in the form of appendix ...

Page 116: ...A LSU THE RMISTOR FAN DEV_ID TONER_TX TONER_RX PTL SOLENOID PICK_UP DUPLEX MP PAPER SENSOR FEED P EMP EXIT MP BIN FULL COVER OPEN S W 24V 5V LIU LINE1 EXTERNAL PHONE TRANSFORMER 600 600 TX RX MODEM EXT_PHONE PAPER ATING PART EXTER NAL PHONE INTE RFACE PART LINE INTERFACE MODEM 33 6Kbps 14P UNICON USB CABLE CENTRONICS CABLE Image Processor 12bit ADC I O PORT Motor CNTR DMA I F CIP3 FAST SRAM 1Mbit ...

Page 117: ...HA 7 ADF _IA 0 8 ADF _IA 1 9 ADF _PHB 10 ADF_I B 0 11 ADF_I B 1 12 MODULE _DE TECT 13 ADF_P ADF_P ADF_P _ DET 14 _P OS 15 _REGI 16 NC ADF MO TOR 1 ADF _A 2 ADF _NA 3 ADF _B 4 ADF _NB 1 5V 2 SIGN AL SIGN AL 3 GND _5 GND _5 1 5V 2 3 4 5 NC SCANNER PART DETECT SENSOR SENSOR POSI ON EXIT SENSOR 1 5V 2 S IGNAL 3 GND _5 1 T HERM1 2 T HERM2 JOI NT TYPE 1 T HERM1 2 T HERM2 DC FAN 1 24V 2 NC 3 Control 1 MT...

Page 118: ...8 MHz LIU OSC 48 MHz USB INTERFACE IC UNICON USB RTC PARALLEL INTERFACE OPE PANEL INTERFACE PROGRAM ROM 1MB x 4EA SRAM 256K DATA RAM DRAM 8MB x 2EA PLL Reset WDT Generation ARM7TDMI Cache 8KB ROM SRAM FLASH ROM Control 4 Bank I O Control 5 Bank CPU BUS Interface Block GPIO SYSTEM BUS Interface Block Arbiter VIS ADC RAM 512B UART 3 CH Interrupt Control 4 External Timer 3 CH Tone Generator Engine Co...

Page 119: ...interval DOCUMENT SPEED 58 208mm S 1SCAN LINE DOT MAZ SCAN distance 216mm DOT per 1mm 3 USB Clock 3 2 2 POWER ON OFF RESET 1 Signal Operation POWER ON OFF DETECT VCC RISING FALLING 4 5 4 6V Td Ct V sensing I charge Ct 33µF Is 100µA 2 TIMING CHART Device Oscillator Frequency 20MHz Device Oscillator Frequency 45 3928 MHz Device Oscillator Frequency 48MHz Input Signal 5V Power Line VCC Output Signal ...

Page 120: ...I O CPU Data Bus 7 11 DATA8 I O CPU Data Bus 8 12 Vssi Vss 3 3 V Gnd 13 DATA9 I O Input CPU Data Bus 9 PHBTT8 8 mA 14 Vddi Vdd 3 3 V 15 DATA10 I O Input CPU Data Bus 10 PHBTT8 8 mA 16 DATA11 I O CPU Data Bus 11 17 DATA12 I O CPU Data Bus 12 18 DATA13 I O CPU Data Bus 13 19 Vsso Vss 5 V Gnd 20 DATA14 I O Input CPU Data Bus 14 PHBTT8 8 mA 21 DATA15 I O CPU Data Bus 15 22 DATA16 I O CPU Data Bus 16 2...

Page 121: ... 42 DATA29 I O Input CPU Data Bus 23 PHBTT8 8 mA 43 DATA30 I O CPU Data Bus 23 44 DATA31 I O CPU Data Bus 23 45 Vssi Vss 3 3 V Gnd 46 LFIA0 OP4 O H Line Feed Motor Phase A PHOB4 4mA 47 Vddi Vdd 3 3 V 48 LFIA1 OP5 O H Line Feed Motor Phase A PHOB4 4mA 49 LFIB0 OP6 O Line Feed Motor Phase B 50 LFIB1 OP7 O Line Feed Motor Phase B 51 TnRST I TAP Controller Reset PHIT 52 TMS I TAP Controller Mode Sel P...

Page 122: ...71 Vddp Vdd 5 V 72 PERROR O L Paper Error PHOB8 8 mA 73 BUSY O Parallel Port Busy PHOB8 8 mA 74 nACK O H Parallel Port Acknowledge PHOB8 8 mA 75 Vssp Vss 5 V Gnd 76 PD0 I O Input Parallel Port Data 0 PHBTT8 8 mA 77 PD1 I O Parallel Port Data 78 Vddi Vcca 3 3 V for Ring OSC 79 PD2 I O Input Parallel Port Data PHBTT8 8 mA 80 PD3 I O Parallel Port Data 81 Vssi Vssa 3 3 V Gnd for Ring OSC 82 PD4 I O I...

Page 123: ... Ex IRQ 3 102 Vssi Vss 3 3 V Gnd 103 VCLK I Video Clock Input PHIC 104 Vddi Vdd 3 3 V 105 IP 7 nFSYNC I Input Port Frame Sync PHIL ST 106 nLSYNC I Line Sync 107 OP 8 nPRINT O H Out Port Print Start PHOB4 4 mA 108 Vssi Vss 3 3 V Gnd 109 VDO O H Video Data Output PHOB16 16mA 110 Vsso Vss 5 V Gnd 111 CCLK PWM 0 O H Com Clock PWM 0 PHOB4 4 mA 112 nEPRDY RxD0 I Engine Power Ready Uart 0 Rx Data PHIL ST...

Page 124: ...sso Vss 5 V Gnd 132 DRAMD0 I O Input DRAM Data Bus 0 PHBTT12 12mA 133 Vddo Vdd 5 V 134 DRAMD1 I O Input DRAM Data Bus 1 PHBTT12 12mA 135 DRAMD2 I O DRAM Data Bus 2 136 DRAMD3 I O DRAM Data Bus 3 137 DRAMD4 I O DRAM Data Bus 4 138 Vsso Vss 5 V Gnd 139 DRAMD5 I O Input DRAM Data Bus 5 PHBTT12 12mA 140 DRAMD6 I O DRAM Data Bus 6 141 DRAMD7 I O DRAM Data Bus 7 142 Vssi Vss 3 3 V Gnd 143 DRAMD8 I O Inp...

Page 125: ...21 I O DRAM Data Bus 21 162 Vssi Vss 3 3 V Gnd 163 DRAMD22 I O Input DRAM Data Bus 22 PHBTT12 12mA 164 Vddi Vdd 3 3 V 165 DRAMD23 I O Input DRAM Data Bus 23 PHBTT12 12mA 166 DRAMD24 I O DRAM Data Bus 24 167 DRAMD25 I O DRAM Data Bus 25 168 DRAMD26 I O DRAM Data Bus 26 169 Vsso Vss 5 V Gnd 170 DRAMD27 I O Input DRAM Data Bus 27 PHBTT12 12mA 171 Vddo Vdd 5 V 172 DRAMD28 I O Input DRAM Data Bus 28 PH...

Page 126: ...dress Bus 11 192 Vssi Vss 3 3 V Gnd 193 nROMCS0 O H ROM Chip Select 0 PHOB4 4 mA 194 Vddi Vdd 3 3 V 195 nROMCS1 O H ROM Chip Select 1 PHOB4 4 mA 196 nROMCS2 O ROM Chip Select 2 197 nROMCS3 O ROM Chip Select 3 198 nROMRD O ROM or IO Read PHOB8 8 mA 199 Vssp Vss 5 V Gnd 200 nROMWR O H ROM or IO Write PHOB8 8 mA 201 Vddp Vdd 5 V 202 ADDR2 O L Address Bus 2 for ROM PHOB8 8 mA 203 ADDR3 O Address Bus 3...

Page 127: ...CTOut 2 O Address Bus 17 for ROM 223 ADDR18 CTOut 3 O Address Bus 18 for ROM 224 Vsso Vss 5 V Gnd 225 ADDR19 CTOut 4 O L Address Bus 19 for ROM PHOB8 8 mA 226 ADDR20 CTOut 5 O Address Bus 20 for ROM 227 ADDR21 CTOut 6 O Address Bus 21 for ROM 228 ADDR22 CTOut 7 O Address Bus 22 for ROM 229 Vddo Vdd 5 V 230 ADDR23 PTOut O L Address Bus 23 for ROM PHOB8 8 mA 231 Vsso Vss 5 V Gnd 232 TESTSE I Scan En...

Page 128: ...ted from the CPU after the POWER is ON it activates RD SIGNAL and reads the DATA HIGH LOW stored in the FLASH MEMORY to control the overall system The FLASH MEMORY may also write When turning the power on press and hold the key power switch for 2 3 seconds then the LED will scroll and the PROGRAM DOWNLOAD MODE will be activated In this mode you can download the pro gram through the parallel port T...

Page 129: ...e DRAM only when the power is on It stores data white the CPU processes data The address to read and write the data is specified by RAS SIGNAL and CAS SIGNAL DRAMWE SIGNAL is activated when writing data and DRAMOE SIGNAL when reading You can expand up to 64MBYTE of DRAM in this sys tem 0x0000000 0xf f f f f f f bank3 Next bank3 Base bank2 Next bank2 Base bank1 Next bank1 Base bank0 Next bank0 Base...

Page 130: ...the page mode while access ing the burst For FPM DRAM the data are valid only when the nCAS is active While configuring the software you must set the timing register of SFR considering the clock speed and the DRAM spec 5Mhz MCLK DRAMD nWE nOE DRAMA nCAS nRAS Trp Trc Tcas Tcas data 1 data 0 row address column address column address addr wait wait data data FPM Read Timing Diagram ...

Page 131: ... Trc Tcas Tcas data 1 data 0 row address column address column address addr wait wait data data clock type Trp Trc Tcas cycle register cycle register cycle register 58Mhz 40 ns FPM 2 0x1 2 0x1 1 0x0 50 ns FPM 2 0x1 2 0x1 1 0x0 60 ns FPM 3 0x2 2 0x1 2 0x1 70 ns FPM 3 0x2 2 0x1 2 0x1 FPM Write Timing Diagram SFR Values Example for FPM ...

Page 132: ...s active while reading the internal data however it has a latch that the data will be continuously outputted even after the nCAS is inactivated While configuring the software you must set the timing register of SFR considering the clock speed and the DRAM spec 5Mhz MCLK DRAMD nWE nOE DRAMA nCAS nRAS data 1 data 0 row address column Trp Trc Tcas Tcas addr wait wait data data column EDO Read Timing ...

Page 133: ...nRAS data 1 data 0 row address column Trp Trc Tcas Tcas addr wait wait data data clock type Trp Trc Tcas cycle register cycle register cycle register 58Mhz 40 ns EDO 2 0x1 2 0x1 1 0x0 50 ns EDO 2 0x1 2 0x1 1 0x0 60 ns EDO 3 0x2 2 0x1 1 0x0 70 ns EDO 3 0x2 2 0x1 2 0x1 column FPM Write Timing Diagram SFR Values Example for FPM ...

Page 134: ... DRAMA 11 SIGNAL through DRAMD 24 31 3 2 8 SRAM 32KB SRAM It stores a variety of option data 3 2 9 FAX TRANSCEIVER Only SCX 5312F 3 2 9 1 GENERAL This circuit processes transmission signals of modem and between LIU and modem 3 2 9 2 MODEM u44 FM336 is a single ship fax modem It has functions of DTMF detection and DTMF signal production as well as functions of modem TX A1 2 is transmission output p...

Page 135: ... Line Time for One Color 5mS Light Source Power 12V Maximum Pixel frequency 6 MHz Effective Sensor Element 5340 X 3 Clamp Level 0 7 0 8V Bright Output MIN 0 8V IRQ AFE 12 bit A D converter Shadi ng Correctio n Enlarge men t Redu ction SRAM 8 192 x8 2l ine Imag e Processing Mo dule DMA Interface CIP3 Register CPU I F Mod ule Vp eak Contro l Mo to r Con tro l AIN ADC_REFT ADC_REFB PI_TG PI1 R_LED G ...

Page 136: ...ma correction Enlargement Reducement and Binarization Shading Correction 1 White shading correction support for each R G B 2 White shading data memory 3x8Kx12bits 288Kbits 384Kbits external 3 Black shading data memory 3x8Kx12bits 288Kbits 384Kbits external Gamma Correction 1 Independent Gamma table for each RGB component 2 Gamma table data memory 3x1Kx8bits 24Kbits internal Binarization mono 1 256...

Page 137: ...ta output format in DTM Data Transfer Module 1 DMA mode Burst On demand mode 2 CDIP I F LINE_SYNC PIXEL_SYSNC PIXEL_DATA 7 0 36 General Purpose Input Output 8 GPO 28 GPIO Black White reversion and Image Mirroring support CPU Jupiter DMA Controller Jupiter DATA BUS Scanner DOCUMENT IMAGE Analog Signal T R D M A _ R E Q Image Processor T R D M A _ A C K Scan Motor Driver PI_TG ADC_CLK LINE_PERIOD CL...

Page 138: ...ster CPU I F Module Vpeak Control Motor Control AIN ADC_REFT ADC_REFB PI_TG PI1 R_LED G_LED B_LED Gamma Correction SRAM_A 15 0 SRAM_D 15 0 SRAM_nRD SRAM_nWR A 5 0 D 15 0 nCS nRD nWR nXDREQ nXDACK TX_A B nTX_A B TX_EN1 EN2 Sensor Interface Shading Acquisition SRAM 1024 x8 R G B SRAM 4096 x16 2 line SRAM 256 x 8 PI2 EXT SRAM Interrupt Control Vertical Decimation SRAM 1024 x8 Block diagram of CIP3 ...

Page 139: ...mode is an improved protocol for the communication between PC and peripherals such as printer and scanner and it provides high speed two way data communication ECP mode provides two cycles in the two way data transmission data cycle and command cycle The command cycle has two formats Run Length Count and Channel Addressing RLE Run Length Count has high compression rate 64x and it allows real time ...

Page 140: ...clock the data into the Peripheral 5 Peripheral sets BUSY low to indicate that it is ready for the next byte 6 The cycle repeats but this time it is a command cycle because nAUTOFD is low 1 The host request a reverse channel transfer by setting nINIT low 2 The peripheral signals that it is OK to proceed by setting PE low 3 The peripheral places data on the data lines and indicates a data cycle by ...

Page 141: ... Device USB transceiver 3 3V signal voltage regulator 48 MHz oscillator circuit Programmable clock generator Serial Interface Engine consisting of Physical Layer In terface PHY and Media Access Controller MAC USB Specification 1 0 compliant Control Status Register File USB Function Controller with seven FIFO based End points One bidirectional Control Endpoint 0 8bytes Three Transmit Endpoints 2 32...

Page 142: ...anual CS A0 VVR RD D 7 0 DATA_IN DATA_OUT ADDR DATA_IN DATA_OUT ADDRESS 0x00 0x3F REGISTERFILE cs A0 RD VVR D 7 0 input out vvrte Address Read Data out Burst Read Data Non Multiplexed Mode Interface Block Diagram Non Multiplexed Mode Basic Timing Diagram ...

Page 143: ...he actuator con nected to it and informs the CPU of whether there is paper When there is no paper in the cassette the red LED of the OP panel LED will turn on to tell the user to fill the cassette with papers 3 Paper Feeding When the paper is fed into the set and passes through the actuator of the feed sensor unit transistor inside the photo interrupter will turn on nFEED signal will turn low and ...

Page 144: ...s the rated inputs It supplies electrifying voltage MHV supply voltage SUPPLY developing voltage DEV blade voltage BLADE and transferring voltage THV Each high voltage supply shows the voltage required in each digital picture process 3 5 7 2 Digital Picture Process Digital picture developing method is widely used by copy machine laser beam printer and fax paper The process is comprised of electrif...

Page 145: ...y the transfer roller The toner attached to the OPC drum will be energized to hundreds to thousands of the transfer voltage by HVPS The electrostatic force of the transfer roller generated has higher adhesiveness than the toner OPC drum and thus it moves to the surface of the paper passing through the transfer roller The toner transferred to the paper with weak electrostatic force is fixed to the ...

Page 146: ...TROL UNIT TRANS FEED BACK THV REGULATION CIRCUIT REGULATION CIRCUIT THV ENVIRONMENT RECOGNITION CIRCUIT PWM CONTROL UNIT SWITCHING CONTROL UNIT MHV PWM TRANS FEEDBACK REGULATION CIRCUIT OPC MHV BIAS PWM PWM CONTROL UNIT SWITCHING CONTROL UNIT TRANS BLADE SUPPLY DEV FEEDBACK REGULATION CIRCUIT Electrification Unit Block Diagram Transfer Output Unit Block Diagram MHV Output unit Block Diagram BIAS O...

Page 147: ... and the steady voltage will be accepted to the non invert ing terminal of OP AMP 324 As the voltage higher than the inverting reference voltage of OP AMP which is set to R506 and R507 OP AMP output turns high This output sends IB to the TRANS auxiliary wire through current restricting resistance Q502 via R509 and C504 and Q502 turns on When the current is accepted to Q502 Ic increases to the cur ...

Page 148: ...ctric potential of Q302 will be formed and sends IB to TRANS auxil iary wire through R311 C305 and VR302 via current restricting resistance R314 and eventually Q303 will turn on When the current is accepted to Q303 Q303 s Ic increases to the current proportional to time through the T301 primary coil and when it reaches the Hfe limit of Q303 it will not retain the on state but will turn to off As Q...

Page 149: ... be input to the engine controller ROM This environment recognition setting is organized as follows First set the THV standard voltage Allow 200MΩ load to transfer output enable output and set the standard voltage 800V using VR201 Then set 56 CPU s recognition index value as the standard using VR302 This standard value with CPU makes sure that the current feedback is 4µAwhen output voltage is 800V...

Page 150: ...sages in OPE the main transmits data through UART line to OPE according to the designated format and OPE displays this on LCD LED OPE s sensing is also transmitted to the main through UART line and then the main drives necessary operation OPE PBA consists of U1 MICOM Z8601 LCD key matrix LED indicators Refer to OPE Schematic Diagram and Wiring Diagram sections of this manual Signals from the key m...

Page 151: ...VL1 VBD1 VCE Q2 VDS Q1 3 7 3 AC MATCHING PART Basic LIU s AC IMPEDANCE is 600 and uses R47 48 C36 to possibly control combined IMPEDANCE U S Usage A terminal IMPEDANCE Æ 600W 30 CTR21 A Terminal IMPEDANCE Æ 270 750W 150nF 3 7 4 DIALER PART MF DIAL DTMF Dialing is controlled by MODEM and should be selected by appropriate LEVEL and On off Time output based on each countries own National specificatio...

Page 152: ...Channel Name 5 1V 24 0V 12 0V 2 Rated Output Voltage 5 1V 24 0V 12 0V 3 Rate Output Current 2A 2 5A 1 0A 4 Maximum Load Current 3A Continued 3 5A Continued 1 0A Continued and Load Pattern 5 Load Change Range 0 5 2 0A 0 3 2 5A 0 2 1 0A 6 Rate output voltage 5 1V 5 24 0V 10 12V 5 For rated I O 4 84 5 35V 21 60 26 40V 11 40 12 60V 7 1 Total Output Voltage Including All Including All Including All Dev...

Page 153: ...T output stage The SMC IC has a Auto restart without a Power Supply for the IC and a Thermal Shutdown function and so on C509 R512 C510 D505 clamp leading edge voltage spikes caused by transformer leakage inductance The power secondary winding pim 11 12 is rectified and filtered by D507 C552 L551 and C554 to create the 5V output voltage The bias winding pin 4 5 is rectified and filltered by D506 a...

Page 154: ...by either forward or reverse signal Once triac is turned on it will not be controlled by gate sig nal but will be continuously on until the current between major terminals decreases below the holding current In other words you cannot turn it off with reverse signal unlike SCR This property is called current voltage threshold rise rate commutation dv dt In AC power control application triac has to ...

Page 155: ...4 1 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual 4 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual 4 Schematic Diagrams 4 1 Main Circuit Diagram 1 14 ...

Page 156: ...4 2 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual Main Circuit Diagram 2 14 ...

Page 157: ...4 3 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual Main Circuit Diagram 3 14 ...

Page 158: ...4 4 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual Main Circuit Diagram 4 14 ...

Page 159: ...4 5 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual Main Circuit Diagram 5 14 ...

Page 160: ...4 6 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual Main Circuit Diagram 6 14 ...

Page 161: ...4 7 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual Main Circuit Diagram 7 14 ...

Page 162: ...4 8 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual Main Circuit Diagram 8 14 ...

Page 163: ...4 9 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual Main Circuit Diagram 9 14 ...

Page 164: ...4 10 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual Main Circuit Diagram 10 14 ...

Page 165: ...4 11 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual Main Circuit Diagram 11 14 ...

Page 166: ...4 12 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual Main Circuit Diagram 12 14 ...

Page 167: ...4 13 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual Main Circuit Diagram 13 14 ...

Page 168: ...4 14 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual Main Circuit Diagram 14 14 ...

Page 169: ...onics SCHEMATIC DIAGRAMS Repair Manual 4 2 LIU Circuit Diagram BRW 2 74K 1 600 180K 1 4W YEL 120K ORG BLU 1W 250V ARS1 3 OPTION 1K 2W 16V 16V for EU PTT 250V 600 600 GRN 1K 1 15nF 400V BLK 10 1 0 25W RED 0 22UF 16V 0 25W ...

Page 170: ...4 16 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual 4 3 OPE Circuit Diagram ...

Page 171: ...MGR1 2W 15MF C505 2KV 680 U101 A KA324 3 2 1 R512 MGR1 2W 12MF D402 4KV R402 56KF 18V C503 104 C506 3KV 471 R403 62KF C403 333 R412 2 2K 18V DEV 50K C104 35V 47uF R505 27K R410 1W 3 R419 5 6K MHV PWM 3 4 U103 A D401 1N4148 Q402 D526 Y C407 104 R501 100 R504 86 6KF R509 47K D502 4KV C401 222 R409 430 R502 2K R520 5 6K CON03 24 24VS R510 430 R408 47K Q501 A708 Y ZD401 1W 150V 24VS R404 33K U103 B T5...

Page 172: ...303 333 R302 33K R204 100KF C101 35V 47uF T301 KAB 006 1 4 2 5 6 7 R315 BR1 2W 30MJ R314 2 2KF R311 100KF R203 30KF C206 6KV 471 D302 1N4148 C201 103 Q201 A708 Y R303 100KF Q202 D526 Y R202 2K Q302 A708 Y R201 100 R210 430 7407 THV THV EA C308 3KV 471 CON03 6 Q301 A708 Y C202 331 D202 1N4148 C307 3KV 471 CON03 1 3 24VS C304 500V 103 24VS CON03 18 R214 1K T201 HVT 2A 1 4 2 5 7 6 THV READ CON03 20 U...

Page 173: ...008 1 8W470J IC2 7653 R14 1 8W24J R13 1 8W1KJ Q3 R9 1 8W22KJ R15 1 8W680J R11 R10 1W0 35J FUSER_ON 24S R66 RD1 8W01 5KJ R16 1 8W680J C14 50V102J VCC GND FB RT CT CS IS OUT C13 R18 1 8W18KJ R19 1 8W5 6KJ C15 50V471J C16 50V683J R20 PC1 PC 123 PC2 PC 123 D6 D1NL20U C24 35V100uF D7 D1NL20U IC3 IC 278RXX C42 1KV471 L2 C L2 B R17 1 8W51J D2 D1NL20U C43 C12 35V33uF D9 A SB560 D8 B SB560 C MY50V472J C1 R...

Page 174: ...1008 1 8W470J IC2 7653 R14 1 8W24J R13 1 8W1KJ Q3 R9 1 8W22KJ R15 1 8W680J R11 R10 1W1J FUSER_ON 24S R66 RD1 8W01 5KJ R16 1 8W680J C14 50V102J VCC GND FB RT CT CS IS OUT C13 R18 1 8W18KJ R19 1 8W5 6KJ C15 50V471J C16 50V683J R20 PC1 PC 123 PC2 PC 123 D6 D1NL20U C24 35V100uF D7 D1NL20U IC3 IC 278RXX C42 1KV471 L2 C L2 B R17 1 8W51J D2 D1NL20U C43 C12 35V33uF D9 A SB560 D8 B SB560 C MY50V472J C1 R2 ...

Page 175: ...4 21 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual 4 6 ADF Circuit Diagram ...

Page 176: ...4 22 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual 4 7 Flat Circuit Diagram ...

Page 177: ...4 23 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual 4 8 PTL Circuit Diagram ...

Page 178: ...4 24 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual 4 9 Sensor Circuit Diagram ...

Page 179: ...4 25 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual 4 10 Toner_Rx Circuit Diagram ...

Page 180: ...4 26 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual 4 11 Toner_Tx Circuit Diagram ...

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