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3-33

Samsung Electronics

CIRCUIT DESCRIPTION

Repair Manual

3-4-2-8. MHV (Electrification Output Enable)

Electrification Output Enable is the electrification output control signal 'PWM-LOW ACTIVE'.
When MHV-PWM LOW signal is received, Q401 turns on and the steady voltage will be accepted to the non-inverting ter-
minal of OP-AMP 324. As the voltage higher than the inverting reference voltage of OP-AMP, which is set to R405 and
R406, OP-AMP output turns high.

This output sends IB to the TRANS auxiliary wire through current-restricting resistance Q402 via R408 and C403 and Q402
turns on. When the current is accepted to Q402, Ic increases to the current proportional to time through the T401 primary
coil, and when it reaches the Hfe limit of Q402, it will not retain the "on" state, but will turn to "off". As Q402 turns 'off', TRANS
N1 will have counter-electromotive force, discharge energy to the secondary unit, sends current to the load and outputs
MHV voltage through the high voltage output enable, which is comprised of Regulation– circuit.

MHV-PWM

U2 7407

R411 2.2K

18V

Q401 A708

R403 130K

R402
82K

R412 2K

R404
27K

C408
104

R406
2.2K

R405 220K

24VS

+

_

R408
47K

R409
390

KA324

C403
333

Q402
D526

24VS

T401

C404
3K/471

D402
4KV

C406
3K/471

R416
15M

R417
15M

MHV OUTPUT

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Summary of Contents for SF-530 Series

Page 1: ...ICE SAMSUNG FACSIMILE SF 530 531P Manual FACSIMILE CONTENTS 1 Precautions 2 Specifications 3 Disassembly and Reassembly 4 Troubleshooting 5 Exploded Views and Parts List 6 Block Diagram 7 Connection Diagram ...

Page 2: ... Samsung Electronics Co Ltd September 2001 Printed in Korea VERSION NO 1 00 CODE JC 0059A This service manual is also provided on the web the ITSELF system Samsung Electronics Co Ltd http itself sec samsung co kr ...

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 2001 9 Samsung Electronics Digital Printing CS Group ...

Page 4: ...ION ATTENZIONE PRECAUCION CAUTION Avoid exposure to invisible laser radiation when the development unit is not installed INVISIBLE LASER RADIATION WHEN THIS COVER OPEN DO NOT OPEN THIS COVER UNSICHTBARE LASERSTRAHLUNG WENN ABDECKUNG GEOFFNET NIGHT DEM STRAHL AUSSETZEN REYONNEMENT LASER INVISIBLE EN CAS D OUVERTURE EXPOSITION DANGERUSE AU FAISCEAU RADIAZIONE LASER INVISIBLE IN CASO DI APERTURA EVIT...

Page 5: ...ic solder removal device Some sol der removal devices not classified as anti static can generate electrical charges sufficient to damage ESDs 5 Do not use Freon propelled chemicals When sprayed these can generate electrical charges sufficient to dam age ESDs 6 Do not remove a replacement ESD from its protective packaging until immediately before installing it Most replacement ESDs are packaged wit...

Page 6: ...e Standard Equipment to check the weight of con sumables toner cartridge supplied by Samsung Electronics The gram unit can be measured Driver Standard type type M3 long M3 short M2 long M2 short Pinset Standard For general home use small type Cotton Swab Standard For general home use for medical ser vice Cleaning Equipments a IPA Isopropyl Alcohol dry cloth or a soft stuff neutral detergent Softwa...

Page 7: ...V 240V 110V 120V 220V 240V Power Idle 10 W H 10 W H Consumption Max 140 W H 140 W H Power Save Mode OFF 15 30 60 Min OFF 15 30 60 Min Print Print Method Laser Laser Speed 8ppm FAX Print Out 8ppm PC Print Fax Print Resolution Normal NA 600 x 600 DPI Print language No PrinThru Toner Save 30 50 30 50 Scan Scan Method CIS CIS Quick Scan Speed 6 sec 3 sec Resolution 200 x 200 DPI 300 x 300 DPI Scan Wid...

Page 8: ...ility ITU G3 Communication System PSTN PABX Modem Speed 33 6Kbps Fax Modem TX Speed 3sec Using CCitt 1 Chart with Standard Resolution Compression MH MR MMRc Rcv Mode TEL FAX AUTO ANS FAX ECM Yes DRPD Yes USA New Zealand Australia SEMI only Resolution Std 203 98dpi Fine 203 196dpi S Fine 203 392dpi Memory Capacity 2MB Optional Memory None Functions Voice Request Yes TTI Yes RTI Yes Polling Yes Flas...

Page 9: ...river Printer No Samsung PrinThru TWAIN No Samsung ScanThru TWAIN PC FAX No Samsung FaxThru Media CD ROM No Yes Diskette No No Y2K Compliant Yes Yes Including Software No Print Scan Copy Driver PC Fax E mail OCR Software Special Direct E mail Send No Yes Features Fax Forward Yes Toner Save Yes Reprint No Yes Only Last PC Print 2 up FAX Receive Yes Scan to PC FAX No Yes Toner Life Initial 1 000 Pag...

Page 10: ...outing that will be affected Whenever servicing the machine you must per form as follows 1 Check to verify that documents are not stored in memory 2 Be sure to remove the toner cartridge before you disassemble parts 3 Unplug the power cord 4 Use a flat and clean surface 5 Replace only with authorized components 6 Do not force plastic material components 7 Make sure all components are in their prop...

Page 11: ...rty wipe it off with soft cloth dampened with water If the Roller is heavily worn replace it with a new one 3 2 Samsung Electronics Disassembly and Reassembly 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0...

Page 12: ... connector and one wire 3 Pull the bottom left end of the cover downward to unlatch the front cover unit and remove the cover from the main frame 4 Remove two screws securing bracket scan board then take out the bracket scan board 5 Unplug two connectors and one wire from the scan board 6 Lift the OPE cover Samsung Electronics 3 3 Disassembly and Reassembly 1 2 1 2 ...

Page 13: ...7 Remove the stopper holding the OPE cover 8 Unlatch the bottom ends then remove the OPE cover 3 4 Samsung Electronics Disassembly and Reassembly 1 2 ...

Page 14: ... After wiping it be sure to dry it Check the rub ber wear If the wear reaches 1 2 its original thickness replace it with a new one Samsung Electronics 3 5 Disassembly and Reassembly 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Holder Rubber Rubber ADF Guide Boss Holder Rubber Rubber ADF Pinset or Screw Dri...

Page 15: ... side of the LCD and the two of four latches securing the board Then remove the OPE board 3 6 Samsung Electronics Disassembly and Reassembly 3 7 Lever Sensor Doc 1 Unlatch the lever sensor Doc from the scan upper frame and take it out 3 8 Lever Sensor Scan 1 Push the both sides of Lever sensor Scan inward then unlatch and take out the sensor Scan from the scan upper frame ...

Page 16: ...msung Electronics 3 7 Disassembly and Reassembly 3 10 Scan Motor 1 Before you disassemble Scan Motor you should remove OPE cover see page 3 3 Bracket scan board see page 3 3 2 Unplug one connector from the scan board 3 Remove three screws then remove the motor Ass y from the main frame 4 Take out the gear from the Motor Ass y 5 Remove two screws and remove the motor ...

Page 17: ...move two screws securing the guide paper and remove the guide paper 3 Remove ADF Roller from the scan front frame 3 8 Samsung Electronics Disassembly and Reassembly Guide Paper ADF Roller 3 12 CIS 1 Remove one screw and push CIS as shown below and lift it 2 Separate the Dummy CIS from CIS CIS tape ...

Page 18: ...bly and Reassembly 3 14 Top Cover 1 Before you remove the ADF Roller you should remove OPE cover see page 3 3 Rear cover see above 2 Remove two screws securing the top cover from the back side of the machine 3 Remove two screws and slide the left and right paper guides fully inward Then spread the bottom of the top cover and lift the cover to remove Paper guides ...

Page 19: ...ge 3 9 Top cover see page 3 9 2 Take out the tray from the main frame 3 10 Samsung Electronics Disassembly and Reassembly 3 16 LSU 1 Before you remove the LSU you should remove All covers see page 3 3 3 9 2 Remove three screws securing the LSU 3 Unplug two connectors from the LSU and remove the LSU ...

Page 20: ...sfer Roller using a proper tool Driver and take out the Roller Samsung Electronics 3 11 Disassembly and Reassembly 3 18 Engine Board 1 Before you remove the Engine board you should remove All covers see page 3 3 3 9 LSU see page 3 10 2 Unplug five connectors and remove one screw from the engine board then remove the board ...

Page 21: ...rs from the engine board 3 Remove four screws securing the plate upper and remove the plate upper as below 4 Remove two screws and remove the Roller from the plate Note When you reassemble the pick up Roller make sure that the right end of the pick up Roller fits into the pick up gear shaft 3 12 Samsung Electronics Disassembly and Reassembly Pick up gear shaft ...

Page 22: ... 12 2 Pull the knock up Ass y fully backward 3 Remove the knock up Ass y from the main frame Samsung Electronics 3 13 Disassembly and Reassembly 3 21 Cap Pad 1 Before you remove the cap pad you should remove All covers see page 3 3 3 5 LSU see page 3 10 Plate upper see page 3 12 Knock up Ass y see above 2 Take out the cap pad from the main frame ...

Page 23: ...ics Disassembly and Reassembly 3 23 Motor Ass y 1 Before you remove the motor Ass y you should remove All covers see page 3 3 3 9 2 Remove four screws securing the motor Ass y and unplug one connector from the engine board then remove the motor Ass y Note When you reassemble the motor Ass y make sure that the boss shown in the figure below fit into the corresponding screw holes on the motor Ass y ...

Page 24: ...e board and remove the fan Samsung Electronics 3 15 Disassembly and Reassembly 3 25 Gear pick up Ass y 1 Before you remove the gear pick up Ass y you should remove All covers see page 3 3 3 9 Note When reassembling make sure that the direction of the gear is correct 2 Release two snap fits and remove the gear pick up Ass y from the main frame ...

Page 25: ...d and remove one screw then remove the solenoid 3 16 Samsung Electronics Disassembly and Reassembly 3 27 HVPS Board 1 Before you remove the HVPS board you should remove All covers see page 3 3 3 9 2 Remove three screws and one connector from the HVPS board then remove the board Note when reassembling make sure that the terminal is five ...

Page 26: ... remove the hook board from the main frame Samsung Electronics 3 17 Disassembly and Reassembly 3 29 Fuser Ass y 1 Before you remove the fuser Ass y you should remove All covers see page 3 3 3 9 2 Remove two wires after remove two screws from the main frame and one connector from the inter connec tor 3 Remove two screws and unlatch the fuser Ass y using a proper tool ...

Page 27: ...ermostat from the fuser Ass y 3 18 Samsung Electronics Disassembly and Reassembly 3 31 Halogen Lamp 1 Before you remove the thermostat you should remove All covers see page 3 3 3 9 Fuser Ass y see page 3 17 2 On the fuser Ass y remove the two screws then remove the heat Roller 3 Remove the halogen lamp from the heat Roller ...

Page 28: ...Ass y see page 3 17 2 Lift and remove the pressure Roller from the main frame Samsung Electronics 3 19 Disassembly and Reassembly 3 33 Actuator Exit 1 Before you remove the actuator exit you should remove All covers see page 3 3 3 9 Fuser Ass y see page 3 17 2 Lift and remove the actuator exit from the main frame ...

Page 29: ...rews and three connectors then remove the SMPS board from the main frame 3 20 Samsung Electronics Disassembly and Reassembly 3 34 Shield Engine Ass y 1 Before you remove the shield engine Ass y you should remove Rear cover see page 3 9 2 Remove eight screws securing the shield engine Ass y and remove the shield engine Ass y from the main frame ...

Page 30: ...MPS board see above 2 Remove one connector that connects the speaker to the main board and two screws securing the speaker then remove the speaker 3 37 LIU Board 1 Before you remove the LIU board you should remove Rear cover see page 3 9 Shield Engine Ass y see page 3 19 2 Remove three screws and three connectors from the LIU board then remove the board from the main frame ...

Page 31: ...ring the sensor board and unplug one connector from the main board then remove the sensor board 3 22 Samsung Electronics Disassembly and Reassembly 3 38 Main Board 1 Before you remove the main board you should remove Rear cover see page 3 9 Shield Engine Ass y see page 3 19 2 Remove four screws and all the connectors 9 from the main board then remove the board ...

Page 32: ...e the actuator empty feeder you should remove Rear cover see page 3 9 Shield Engine Ass y see page 3 19 2 Remove one connector from the main board and two screws securing the holder feed Ass y then remove the holder feeder Ass y 3 Remove the Feed sensor and the Empty sensor Feed Sensor Empty Sensor ...

Page 33: ... covers see page 3 0 Motor Ass y see page 3 15 2 Release two snap fits and remove the gear feed clutch feed and the spring clutch 3 Rotate the pick up bushing as shown below and remove holder feeder Ass y and Roller feeder 4 Separate the Roller Feeder from the Holder Feeder Ass y Spring clutch Clutch feed Gear feed Roller Feed Holder Feed ...

Page 34: ...60 000 Pages 50 000 Pages 60 000 Pages 50 000 Pages 4 2 Tech Mode In Tech mode the technician can perform various tests to isolate the causes of a malfunction and set the technical option fea tures to customize the machine depending on the user s operation environment To access TECH mode Press SETUP 1 9 3 4 in sequence and the LCD displays TECH in the standby mode screen While in TECH mode the mac...

Page 35: ... 4 28 8 33 6 26 4 KBPS DIALING MODE TONE PULSE TONE SEND FAX LEVEL 0 15 12 DBM RCV FAX LEVEL 40 50 43DBM FLASH TIME RECALL TIME 80 280 600 80 MS PAUSE TIME 1 9 4 SEC REDIAL INTERVAL 1 15 3 MIN REDIAL COUNT 0 5 2 DP MAKE BREAK 40 60 33 67 33 67 SILENCE TIME UNLIMITED 12SEC UNLIMITED ERROR RATE 5 10 10 IGNORE TONER EMPTY ON OFF OFF GROUP DIAL SETUP GROUP NO 1 20 VOLUM SETUP ALARM VOLUM ON OFF ON KEY...

Page 36: ...l and the manual dial Caution The Send Fax Level is set at the best condition in the shipment from factory Never change set tings arbitrarily REDIAL INTERVAL If the remote machine is busy when the machine sends a fax using automatic dialing the machine automatically redials the number Select the time interval between auto matic redial attempts Enter the desired redial interval using the number key...

Page 37: ...est feature can be enabled in order to allow a remote location to call up and run a diagnostic test on your machine You may be instructed by a service repre sentative to enable this feature NOTIFY TONER LOW With this feature enabled when the toner becomes low the toner low information will be sent to ta specified contact point for example the service company After you access this menu select ON an...

Page 38: ...he total number of the dots used to print up to current time THV ON DUTY prints ADC value of transfer voltage THERMISTER prints ADC value of fusing temperature P prints the page number PROGRAM DOWNLOAD Use this feature to download a new upgraded ROM file from a PC that is connected to the machine with a parallel cable IEEE 1284 SCAN COUNT CLEAR If performing this feature the value of scanning orig...

Page 39: ...rotocol list will print automatically PATTERN PRINT Using this pattern printout you can check if the printer mechanism is functioning properly Examine the pattern and look for a break in the diagonal line If the diagonal lines are not broken the printer mechanism is functioning properly SHADING PRIN With this print you can check the scanning elements of the CIS Contact Image Sensor The Engine test...

Page 40: ...TOCOL DUMP LIST OCT 20 1999 06 35 Sending Receiving Name of signal Facsimile Control Field Facsimile Information Field data described in hexdecmal code FIF data described in ASCII code Troubleshooting 4 7 Samsung Electronics SAMPLE OF A PROTOCOL DUMP LIST A number of reports can be printed from the fax machine within the test mode The protocol list all contain detailed information which may be req...

Page 41: ...ending oper ation with no document loaded Load a document and try again There occurs a problem in the LSU Laser Scanning Unit Unplug the power code and plug it back in If the problem still persists please call for service FUSER ERROR There occurs a problem in the fuser unit Unplug the power code and plug it back in If the problem still persists please call for service MEMORY FULL The memory is ful...

Page 42: ... not been received successfully A problem with the facsmile communica tions has occurred Ask the sender to try again PAPER JAM 0 Recording paper has jammed in the paper feed ing area Clear the jam RETRY REDIAL The machine is waiting for a specified time inter val to redial a previously busy station You can press Start to immediately redi al or Stop to cancel the redial operation PAPER JAM 2 Jammed...

Page 43: ...pproximately 1 000 pages 2 Replace Main board 3 In Tech mode 3 1 Press Setup and find MAINTENANCE by pressing repeatedly or then press Start Enter 3 2 When TONER COUNT is displayed in LCD press Start Enter and enter the value of the total toner count in the system data list 3 3 When you are prompted to enter CRU STATE press Start Enter 3 4 When you see 1 1000 2 2300 in LCD select the value of the ...

Page 44: ...on the paper path causing the trouble NO OK after replacing developer Any obstacles on the developer blocking the laser beam OK after removing the obstacles Any obstacles ON mirror lens of LSU and laser path Remove the obstacles Replace the LSU Replace the developer END YES YES YES NO NO NO 4 6 Troubleshooting Flow Chart ...

Page 45: ...he defective component or board The mirror in LSU might be misplaced so the light path to the OPC deviates Repair or replace LSU or remove any deffective matters in the machine Self test pattern prints No image Self testing is possible via Tech Mode Is the OPC terminal of machine is well connected to Frame Does the video data line to LSU transit to High Low when printing Re test after replacing th...

Page 46: ... the connection of OPC GND and Frame Ground correct less than 10 Are the connection terminal and connection correct Repair or replace terminal Replace HVPS or repair defective component Is the connection terminal OK Check the connection of frame Ground and OPC GND Replace HVPS or repair defective component Repair or replace terminal Developing 350V and supplying 550V voltage are OK Does the counte...

Page 47: ...NO YES Clean transfer roller and gear holder YES NO Replace the LSU Replace the developer Is it not over the guaranty life of dot counter Is the toner save mode or the light mode is selected Is the high voltage normal charging developing transfer Any obstacles on the gab between high voltage terminal and developer Transfer roller works OK OK after replacing LSU HVPS works OK Light image ...

Page 48: ...in LSU Transfer part s contact is bad Repair 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 ...

Page 49: ...material might be stuck to blade in the developer inside and it prevents toner supply Replace the toner cartridge 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 p...

Page 50: ...s voltage Works correctly after replaced LSU Repair or replace the defective component The power of LSU is set high or internal problem Replace LSU or adjust voluem 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 ...

Page 51: ...roller Clean the charge roller or replace step up device terminal after check Work OK Internal blade or suppying part of the developer is defective Replace the toner cartridge Check Terminals or contacts and Guide Deve Spring are misplaced Repair or replace transfer roller etc Print 20 to 30 pages using the recommended paper Same problem occurs Adjust voltage or replace HVPS Repair or replace afte...

Page 52: ...ace HVPS There may be a problem in toner layer control in toner cartridge Replace the developer Use the machine with recommended paper and at condition NO NO NO NO NO NO YES YES YES YES YES YES NO YES YES YES YES Check HVPS contacts and HVPS s self output If failed repair replace HVPS Repair or replace HVPS Check and Repair or replace the terminal contacts NO NO Is it regular interval of 31 6mm Is...

Page 53: ...he 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 occured due to the toner fallen Clean the machine Remove obstacles stuck on OPC drum s surface Perform the OPC cleaning using the control panel buttons END NO YES NO NO YES NO YES Does the same problesm persist Is it regular interval of 37 7mm Is it regular interv...

Page 54: ...place the developer This occurs when no Hsync at LSU Replace LSU 75 4 mm interval 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 56 1mm at specific place Problems of terminal contact transfer voltage supplying and transfer roller s due to the cha...

Page 55: ...bleshooting 4 22 Samsung Electronics Transfer roller is clear Clean the transfer roller NO YES Paper path is clear Clean the paper path Clean the pressure roller NO YES Toner Contaminations on Back of Paper ...

Page 56: ... toner cartridge installed correctly Install the toner cartridge correctly NO Transfer roller works properly Clean the TR holder the TR gear OPC roller gear and the transfer roller NO Clean the contact point of transfer roller Check the output of high voltage terminal and adjust or replace if required Partial Blank Image not Periodic ...

Page 57: ... 1mm Transfer roller works properly OK after replacing the transfer roller Is it regular interval of 75 4mm 31 6mm or 37 7mm Replace the fuser 50 2mm 45 2mm or exit roller Clean the contact point of transfer roller Check the output of high voltage terminal and adjust or replace if required Replace the toner cartidge END YES YES NO YES NO YES Clean the TR holder the TR gear OPC roller gear and the ...

Page 58: ... repalce Check high voltage output and repair replace terminals HVPS Irregualrity of toner suppy from developer Repalce developer Light distortion due to the mirror ruined or LSU s diffused reflection Replace LSU NO NO YES YES YES YES NO NO OK after taking out and rocking the toner cartridge When gray pattern printing irregular density persists transfer charge developing voltage drops while printi...

Page 59: ...the OPC and machine or replace developer 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 ...

Page 60: ...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 Set to OHP mode NO YES YES YES Is the OPC mode selected using the software application Recommended OHP film used Inserted over than 10 films into the MPF Trembling at the End When OHP Printing ...

Page 61: ... for a long time Place the machine at normal temperature and re test While printing the voltage of pin 208 of U5 CPU on Main board is 2 0V 2 3V Thermistor s contact is OK Open the top cover When black printing is the fuser NIP width is 1 2 3 0mm 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 sprin...

Page 62: ...g Connections on 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 top cover open or switch error Replace the board or switch Put in the...

Page 63: ...to the heat etc Replace the thermostat Check the PCI and fusing control part and CN502 on the SMPS Replace the component or replace the SMPS 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 64: ...or and paper width detect sensor are assembled reverse Switch them The Sensor board 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...

Page 65: ...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 engine board Replace Is the paper rolled around the presseure roller Remove the fuser remove the paper and replace the pressure roller if necessary Feeds...

Page 66: ...ND NO Check CBF Harness28P MAIN B D to ENGINE B D YES Check MAIN B D CN9 6 HSYNC Signal Replace LSU NO YES Check MAIN B D CN9 3 P_MOTOR Signal Replace MAIN B D NO YES Check MAIN B D CN9 4 LREDADY Signal Replace LSU NO YES Check MAIN B D CN9 9 LDON Signal Replace MAIN B D NO YES LSU Error ...

Page 67: ...and Parts List 5 1 Main Assembly 5 2 Shield Engine Unit Assembly 5 3 Engine Assembly 5 4 Frame Lower Assembly 5 5 Fuser Assembly 5 6 Plate Upper Unit Assembly 5 7 OPE Unit 5 8 Scan Upper Assembly 5 9 Front Assembly 5 10 RX Drive Unit Assembly ...

Page 68: ...Exploded Views and Parts List Samsung Electronics 5 2 5 1 Main Assembly 2 9 17 10 12 3 4 13 11 15 16 5 16 2 16 1 7 18 0 19 17 1 17 2 19 1 19 2 18 1 18 2 8 6 14 14 1 14 2 1 ...

Page 69: ...HOU SHIELD ENGINE 1 X SF 530 ELA HOU SHIELD ENGINE 1 X SF 531P 12 ELA HOU FRAME LOWER JC96 02094B 1 O 110V ELA HOU FRAME LOWER JC96 02094A 1 O 220V 13 ELA HOU RX DRIVE JC96 01755A 1 O 14 MEA HOU OPE FRONT JC97 01463L 1 O SF 530 MEA HOU OPE FRONT TBD 1 O SF 531P 14 1 PBA MAIN SCAN JC81 00441A 1 O 14 2 PMO BASHING WHITE JF72 41306A 1 O 15 PMO COVER TOP JC72 00128A 1 O 16 MEC COVER REAR JC75 00059A 1...

Page 70: ...Exploded Views and Parts List Samsung Electronics 5 4 5 2 Shield Engine Unit Assembly 2 9 9 7 6 8 5 11 3 10 0 S8 12 S2 S2 S 9 4 S 9 1 S 9 S 9 LIU B d ...

Page 71: ... HOOK 2 JC39 00174A 1 O 5 CBF HARNESS MODULA 2 JC39 00175A 1 O 6 CBF HARNESS JC39 40022A 1 O INLET 7 IPR SHIELD ENGINE JC70 00200A 1 O 8 IPR SHILED SMPS JC70 00263A 1 O 9 MEC GUIDE STAKE ASS Y JC75 00087A 2 O 10 PBA MAIN MAIN JC92 01308B 1 O SF 530 PBA MAIN MAIN JC92 01308D 1 O SF 531P 11 ELA M MEDIO AUD SPEAKER JC96 01607A 1 O 12 WASHER E T 1 X 13 CBF HARNESS THERMISTOR JC39 00045A 1 O S2 SCREW M...

Page 72: ...Samsung Electronics 5 6 5 3 Engine Assembly 18 8 5 12 21 7 21 1 21 3 21 2 14 13 1 13 2 3 22 22 2 22 3 22 1 10 11 6 16 S 1 15 9 S 1 20 19 S 6 S 10 S 1 S 1 S 1 S 1 1 2 1 1 1 17 17 4 17 3 17 1 17 2 13 0 Frame Lawer Ass y Bushing Shaft ...

Page 73: ...K TR ASS Y 1 X 13 1 PPR SPACER DR 1 X 13 2 MEC TRANSFER ROLLER JC75 00035A 1 O 14 PMO GEAR_TRANSFER JC72 00179A 1 O 15 PCT INSULATOR ENG BD 1 X 16 PMO DUMMY SIDE 1 X 17 MEC HOLDER PAD JC75 00156A 1 O 17 1 SPRING PAD JC61 00054A 2 O 17 2 PMO HOLDER PAD JC72 00535A 1 O 17 3 PMO HOLDER PAD LARGE JC72 00536A 1 O 17 4 RPR PAD FRICTION 1 X 18 MEC TERMINAL JC75 00049A 5 O 19 MEC SIDE PAD L JC75 00050B 1 ...

Page 74: ... 2 S 2 28 3 28 3 28 4 28 5 28 1 28 2 28 17 18 5 5 3 18 3 31 19 15 1 8 16 11 34 2 34 1 14 34 9 4 24 4 23 37 26 0 20 S 1 S 1 S 1 S 1 S 6 S 1 26 33 13 10 6 36 25 2 S 2 S 2 S 6 27 27 1 27 2 25 12 7 21 35 29 29 3 30 2 29 4 29 1 29 2 30 3 30 30 1 S 1 S 1 1 41 38 40 42 39 Transfer Roller 43 ...

Page 75: ... 27 2 MEC SHAFT FEED 1 X 28 MEC HOLDER FEED JC75 00055A 1 O 28 1 SPRING ACT FEED 1 X 28 2 PMO HOLDER_FEED 1 X 28 3 PMO BUSHING_FEED 2 X 28 4 PMO ACTUATOR_EMPTY 1 X 28 5 PMO ACTUATOR_FEED JC72 00119A 1 O 29 MEC HOLDER TR L JC75 00106C 1 O 29 1 SPRING TR 300 1 X 29 2 IPR PLATE_TR 1 X 29 3 PMO HOLDER TR JC72 00100C 1 O 29 4 PMO BUSHING_TR L JC72 00102A 1 O 30 MEC HOLDER TR R JC75 00107C 1 O 30 1 SPRI...

Page 76: ...Exploded Views and Parts List Samsung Electronics 5 10 5 5 Fuser Assembly 16 11 15 14 14 1 14 2 10 17 18 4 12 2 7 13 9 5 1 8 6 19 3 0 S S S S S 21 22 20 ...

Page 77: ...SHING H R R JC72 00529A 1 O 7 PMO COVER_THERMOSTAT 1 X 8 NPR ROLLER HEAT JC71 00012B 1 O 9 IPR ELECTRODE_PLATE 1 X 10 IPR GROUND_FU 1 X 11 IPR PIN ROLLER EXIT 4 X 12 IPR ELECTRODE WIRE1 1 X 13 IPR ELECTRODE WIRE S 1 X 14 MEA ETC SHAFT EXIT 1 X 14 1 PMO SHAFT_EXIT Z15 JC72 00150A 1 O 14 2 RMO RUBBER_EXIT 4 X 15 PMO ROLLER_IDLE EXIT JC72 00567A 4 O 16 SPRING EXIT JC61 00017A 4 O 17 PMO GEAR_EXIT_DRV...

Page 78: ...Exploded Views and Parts List Samsung Electronics 5 12 5 6 Plate Upper Unit Assembly 6 1 6 2 6 3 S 2 6 6 1 6 2 6 3 S 1 6 4 0 4 1 4 2 4 2 4 3 1 7 3 S S S 2 8 ...

Page 79: ... 2 O 3 ELA UNIT FUSE DEVE 1 X 4 MEA ETC ROLLER PICK UP 1 X 4 1 PMO HOUSING_PICKUP JC72 00109A 1 O 4 2 RMO ROLLER_PICKUP 1 X 4 3 PMO IDLE_PICKUP 2 X 6 MEA ETC IDLE FEED 2 X 6 1 PMO HOLDER_PICKUP 1 X 6 2 SPRING FEED 1 X 6 3 PMO HOLDER_IDLE FEED 1 X 7 CABLE CLAMP 6502 000130 1 O 8 ICT ROLLER IDEL FEED 1 X S5 SCREW TAPTITE 2 X S10 SCREW TAPTITE 6003 000266 1 O S10 SCREW TAPTITE 6003 000266 2 O Plate U...

Page 80: ...MO KET STOP JB72 00108A 1 O 5 LABEL P ONE TOUCH 1 X 6 PMO KEY OT JC72 00275A 1 O 7 PMO KEY FUNCTION 1 X 8 PMO KEY START 1 X 9 PMO OPE COVER JC72 00665L 1 O SF 530 PMO OPE COVER TBD 1 O SF 531P 10 PMO KEY TEL JC72 00667A 1 O 11 PMO KEY SAVE JC72 00668A 1 O 12 PCT LCD WINDOW JC72 00672A 1 O 13 PMO KEY FOWARD JC72 00886A 1 O 14 PMO KEY MODE B JC72 41320A 1 O 15 RMO TEL JC73 00072A 1 O 16 RMO ONE TOUC...

Page 81: ... 1 O 5 SPRING SENSOR 1 X 6 SPRING COILADF JC61 00040A 1 O 7 PMO SCAN UPPER JC72 00671A 1 O 8 PMO LEVER SENSOR DOC JC72 00823A 1 O 9 PMO LEVER SENSOR JC72 41322A 1 O 10 ICT SHAFT PINCH JF70 40521B 1 O 11 PMO HOLDER RUBBER JG72 40044A 1 O 12 PMO ROLL PINCH JG72 40663A 2 O 13 PMO SUPPORT ADF JG72 41083A 1 O 14 RPR RUBBER ADF JC73 00032A 1 O 15 MEC BRUSH ANTISTATIC JG75 10004A 1 O Scan Upper Assembly ...

Page 82: ...nd Parts List Samsung Electronics 5 16 5 9 Front Assembly 1 1 4 1 2 1 5 1 3 1 1 0 15 9 18 18 16 8 31 20 S3 S S S 14 4 26 22 5 Bushing White 21 29 31 3 19 17 7 6 24 25 27 S 33 27 S3 2 23 S 28 28 28 30 11 30 32 32 32 10 ...

Page 83: ... JC66 00305A 1 O 13 IPR BRKT MOTOR 1 X 14 NPR GROUND CIS 1 X 15 PMO OPEN LOCKER L 1 X 16 PMO OPEN LOCKER R 1 X 17 PMO BRKT SCAN B D JC72 00222A 1 O 18 PMO OPEN BUTTON JC72 00273A 2 O 19 PMO COVER MOTOR JC72 00670A 1 O 20 PMO COVER FRONT JC72 00673A 1 O 21 PMO DUMMY CIS L SF 530 JC72 00880A 1 O SF 530 PMO DUMMY CIS L JC72 00495A 1 O SF 531P 22 PMO DUMMY CIS R SF 530 JC72 00881A 1 O SF 530 PMO DUMMY...

Page 84: ...A HOU RX DRIVE JC96 01755A 1 O 1 MOTOR STEP JC31 00005A 1 O 2 PMO GEAR_71 28 1 X 3 PMO GEAR_73 22 1 X 4 PMO GEAR_132 19 1 X 5 IPR BRKT_MOTOR 1 X 6 IPR BRKT_GEAR JC70 00129A 1 O 7 CBF HARNESS_MOTOR JC39 00110A 1 O S 7 SCREW MACHINE 6001 000131 5 O YELLOW 5 10 RX Drive Unit Assembly RX Drive Assembly Parts List 1 4 2 S7 S7 3 5 6 7 S 7 S 7 S 7 0 ...

Page 85: ... PA RT 600 600 Tx Rx TRANSFORMER EXTER NAL PHONE DETECTI ON PAR T EXTERNAL PHONE LI NE HANDSET 600 600 Tx Rx TRANSFORMER F LASH MEMORY 2MB 5V U A RT 5V SCAN B oar d MI COM LCD Dr i v e Key Sc an OPE L C D D O C S E N S O R S M P S H V P S 24V M O T O R O L E N OI D E E N G IN E B D F A N O P C _F U S E Audi o Par t E X IT S E N S O R M H V O P C G N D S U P P L Y D E V T H V UNI CON USB I C Not e ...

Page 86: ...Repair Manual Repair Manual 1 Block Diagram 2 Connection Diagram 3 Circuit Description 4 Schematic Diagrams CONTENTS SAMSUNG FACSIMILE SF 530 531P ...

Page 87: ...Electronics ...

Page 88: ... Electronics Digital Printing CS Group Copyright c 2001 10 This manual is made and described centering around circuit diagram and circuit description needed in the repair center in the form of appendix SAMSUNG ...

Page 89: ...NE SEPERATI NG PART 600 600 Tx Rx TRANSFORMER EXTERNAL PHONE DETECTI ON PART EXTERNAL PHONE LI NE HANDSET 600 600 Tx Rx TRANSFORMER F L ASH MEMORY 2 MB 5V U A R T 5 V SCAN Boar d MI COM LCD Dr ive Key Sc an OPE L C D D O C S E N S O R S M P S H V P S 24V M O T O R O L E N OI D E E N G I N E B D F A N O P C _ F U S E Audi o Par t E X IT S E N S O R M H V O P C G N D S U P P L Y D E V T H V UNI CON ...

Page 90: ...V_FUSE 16 NEW_DEVE 17 EGMOT _A0 18 EGMOT_ A1 19 EGMOT_PHA 20 EGMOT _B0 21 EGMOT _B1 22 GND5 23 5V 24 EGMOT_PHA 25 24VS 26 24VS 27 GND24 28 GND24 CN1 2 SPK 1 SPKOUT 2 AGND 14 MODEM TXA1 13 MODEM TXA2 12 AGND 11 NC 10 MODEM RX 9 EXT PHONE 8 CM L1 7 REMOTE 6 CML2 5 DP 4 HOOK1 3 5V 2 G ND5 1 RI NG CN1 4 1 24VS 2 FUSER_ON 3 5V 4 EXI T 5 5V 6 GND5 7 5V 8 GND5 9 5V 10 GND5 11 24V 12 GND24 13 24V 14 GND24...

Page 91: ...f the main circuit is as follows I O Ports Controller Scan Image Scan Motor Controller Ink Head Controller DMA Controller Parallel Port Interface Video Data Controller UART Serial I O LSU Control PWM Gen Timer System Bus Controller Bus Arbitration Bus Interface ROM SRAM DRAM Controller System Manager Bus Router PLL Clock Save Interrupt Controller A D Converter Derasterizer Carrier Motor Control Po...

Page 92: ...al 3 1 2 Circuit Operation CLOCK 1 System Clock Device Oscillator Frequency 9 500132 MHz KS32C65100 RISC PROCESSOR drives PLL internally and uses 37 17 MHz 2 Video Clock Device Oscillator Frequency 28 7448 MHz 3 USB Clock Device Oscillator Frequency 48 MHz ...

Page 93: ...he parallel port s input control nACK 159 I1 Not parallel port acknowledge The nACK output signal is issued whenever a transfer on the parallel port data bus is completed BUSY 158 O1 Parallel port busy The BUSY output signal indicates that the KS32C65100 parallel port is currently busy SELECT 156 O1 Parallel port select The SELECT output signal indicates whether the device connected to the KS32C65...

Page 94: ...e B CHX GIP 8 116 I3 Encode sensor CHY GIP 9 117 I3 Encode sensor ADDR 21 0 77 80 82 88 90 100 O5 Address bus The 22bit address bus ADDR 21 0 covers the full 4M half words address range of each ROM SRAM DRAM and external I O bank DATA 15 0 59 66 68 75 I O3 External bi directional 16 bit data bus nRAS 1 0 52 53 O1 Not row address strobe for DRAM The KS32C65100 supports up to two DRAM banks One nRAS...

Page 95: ...s output for transmitting serial data TXD2 GOPA 2 189 O1 Transmit data output for the UART2 TXD2 is the UART2 channel s output for transmitting serial data nXDACK GOPA 5 200 O1 External DMA acknowledge This active low output signal is generated whenever a DMA transfer is completed TONEOUT GOPA 3 188 O1 Tone generator output nWDTO GOPA 4 187 P3 Reset out by watch dog timer nIOWR GOPA 10 161 O1 Exte...

Page 96: ...O2 GOPA 29 121 O4 Video out from PIFC VDO1 GOPA 14 122 O5 Video out from LSU control LSU_CLK GOPA 15 123 O1 Clock for LSU motor nHSYNC1 GIP 10 125 I1 HSYNC1 nLREADY GIP 11 126 I1 LSU ready nHSYNC2 GIP 12 127 I1 HSYNC2 VDI GIP 13 128 I2 Video data input from RET VCLK GIP 14 129 I2 External video clock nEXTWAIT GIP 7 130 I3 External wait RTCXIN 202 I7 RTC oscillator clock input RTCXOUT 203 O7 RTC os...

Page 97: ...eds up to 33600 bps using the V 34 half duplex mode Using a V 34 technique to optimize modem configuration for line condi tions the modem connects at the optimal selected data rate that the channel can support from 33600 bps to 2400 bps The modem can operate over the public switched telephone network PSTN through a line terminator provided by a Data Access rrangement DAA The modem satisfies the re...

Page 98: ...ne generation DTMF receive Tone detection with three programmable tone detectors Serial synchronous data Parallel synchronous data Automatic Rate Adaptation ARA in V 34 Half Duplex TTL and CMOS compatible DTE interface ITU T V 24 EIA TIA 232 E data control Microprocessor bus data configuration control Receive dynamic range 0 dBm to 43 dBm for V 17 V 33 V 29 V 27terand V 21 9 dBm to 43 dBm for V 34...

Page 99: ... Note 2 V 34 9600 TCM TCM Note 2 9600 2400 to 3429 Note 2 Note 2 Note 2 V 34 7200 TCM TCM Note 2 7200 2400 to 3429 Note 2 Note 2 Note 2 V 34 4800 TCM TCM Note 2 4800 2400 to 3429 Note 2 Note 2 Note 2 V 34 2400 TCM TCM Note 2 2400 2400 only Note 2 Note 2 Note 2 V 23 1200 75 FSK 1700 420 1200 75 1200 1 0 V 21 FSK 1080 1750 Up to300 300 1 0 V 17 14400 TCM TCM 1800 14400 2400 6 1 128 V 17 12000 TCM TC...

Page 100: ...ator Line Interface RTS TXD CTS TDCLK XTCLK RLSD RXD RDCLK DTR RI DSR RD CS WR D 7 0 RS 4 0 IRQ RESET TXRQ RXRQ XTL0 XTLI TXA1 RIN OH TXA2 TALK RINGD EYEXY EYESYNC EYECLK 5V AGND DGND SPKR Selectable TXRQ output replaces RI output Selectable RXRQ output replaces DSR output 1176DG F2 1 TIP RING telephone line 3 3V Oscillator CLKIN OR Modem Functions Interface Signals ...

Page 101: ...Telephone Line Interface 77 RINGD IA Telephone Line Interface 28 TXA2 O DD Telephone Line Interface 78 RTS IA DTE Serial Interface 29 TXA1 O DD Telephone Line Interface 79 IRQ OA HOST Interface 30 VREF MI Modem Interconnect 80 VSS GND 31 VC MI Modem Interconnect 81 GPO0 MI Modem Interconnect 32 RIN I DA Telephone Line Interface 82 RESERVED 33 MAVSS AGND 83 RESERVED 34 POR IA Modem Interconnect 84 ...

Page 102: ... relay to connect the modem to the telephone line Alternatively in a typical application OH is connected to the normally open Caller ID relay CALLID When the modem detects a Calling Number Delivery CND message the OH output is asserted to close the CALLID relay in order to AC couple the CND information to the modem RIN input without closing the off hook relay and allowing loop current flow which w...

Page 103: ...he end of the training sequence If energy is above the turn on threshold and training is not detected the RLSD off to on response time is 816 baud times for V 17 V 33 V 29 and V 27 ter long train 492 baud times for V 17 V 33 and 486 baud times for V 27 ter short train The RLSD on to off time is 40 5 ms for V 17 V 33 35 5 ms for V 29 or 11 6 5 ms for V 27 ter The RLSD on to off time ensures that al...

Page 104: ...als appearing on the interchange circuits except Ring Indicator RI DSR is OFF when the modem is in a test mode local analog or remote digital loopback The DSR status bit reflects the state of the DSR output RTS IA Request to Send The active low RTS input allows the modem to transmit data present at TXD in the serial data mode TPDM bit 0 or in DBUFFER in the parallel data mode TPDM bit 1 when CTS b...

Page 105: ... When not read the three state drivers assume their high impedance off state During a write cycle data from the data bus is copied into the selected DSP interface memory register with high and low bus levels representing one and zero bit states respectively RS0 RS4 IA OB Register Select Lines Five active high Register Select inputs RS0 RS 4 address interface memory registers within the DSP when CS...

Page 106: ... VDD Supply voltage 5V DC supply ref to GND 4 GND Ground 0V DC reference point 5 GND Ground 0V DC reference point 6 SI Start pulse Start pulse 7 GND Ground 0V DC reference point 8 CLK Clock CIS main clock 9 LEDB LED Ground blue LED POWER SUPPLY BLUE 10 LEDG LED Ground green LED POWER SUPPLY GREEN 11 LEDR LED Ground red LED POWER SUPPLY RED 12 VLED Supply voltage LED POWER SUPPLY Readable width 216...

Page 107: ...5 25 V VLED 4 75 5 0 5 25 V Input Voltage VIH 3 2 V SI CLK VIL 0 8 V Input Current IIH 20 µA SI CLK IIH 0 2 mA LED Current ILEDr 30 mA REF ILEDg 60 mA REF ILEDb 60 mA REF Clock Frequency CLK 2 MHz Clock Pulse L Duty 15 tw to Setup Time tsu 0 tw 2 ns Hold Time th tw 2 ns SIG Delay Time tpd 1 250 ns tpd 2 30 ns Sampling Reriod ts 90 ns CLK SIG S1 tpd2 tpd1 tw th tsu to 2nd 1st ts ...

Page 108: ...ROD LENS ARRAY SHIFT REGISER ANALOG SWITCH VLED LEDR LEDG LEDB VDD GND S1 OP AMP SENSOR CLK SIG 1 20 21 ST 2 5ms 1 2ms 1 2ms 1 2ms 1 2ms 7 5ms line OFF OFF OFF B O P R O P G O P B O P R O P G O P OFF OFF OFF ON ON ON LED_R LED_G LED_B SIG O P CIS Block Diagram ...

Page 109: ...data to the printer ECP 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 ...

Page 110: ...igh 4 Host sets nSTROBE high This is the edge that should be used to 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 PPD 7 0 nSTROBE BUSY nACK DATA COMPATIBILITY HARDWARE HANDSHAKING TIMING PPD 7 0 nAUTOFD nSTROBE BUSY BYTE0 BYTE1 COMMAND BYTE DATA BYTE 1 2 3 ...

Page 111: ... 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 setting BUSY high 4 Peripheral asserts nACK low to indicate valid data 5 Host acknowledges by setting nAUTOFD high 6 Peripheral sets nACK high This is the edge that should be used to clock the data into the host 7 Host sets nAUTOFD low to indicate that it is ready for the next b...

Page 112: ...transceiver 3 3V signal voltage regulator 48 MHz oscillator circuit Programmable clock generator Serial Interface Engine consisting of Physical Layer In terrace 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 and 1 64 by...

Page 113: ...anual CS A0 VVR RD D 7 0 DATA_IN DATA_OUT ADDR DATA_IN DATA_OUT ADDRESS 0x00 0x3F REGISTERFILE NON MULTIPLEXED MODE INTERFACE BLOCK DIAGRAM NON MULTIPLEXED MODE BASIC TIMING DIAGRAM cs A0 RD VVR D 7 0 input out vvrte Address Read Data out Burst Read Data ...

Page 114: ...he main to respond to the situation and the main analyzes these codes and operates the system For example it the main is to display messages 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 neces sary operation OPE PBA consists of U1 MI...

Page 115: ...nects the signals between PSTN exchange and the system Facsimile and it is com prised of Tel Line Interface Circuit and Impedance Matching Trans Circuit 1 TEL_LINE Interface Circuit 2 TRANS Circuit for IMPEDANCE MATCHING 3 3 2 Telephone Circuit Ringer Dial Speech Circuit etc The telephone circuit is comprised of ring detect circuit dialer circuit speech circuit external hook detect circuit and rec...

Page 116: ...ding Unit It represents DC characteristic of the comput er connected through 48V DC power of the switch and lines The DC characteristic of required by the communica tion standards of a number of countries is the DC resistance of 50Ω 300Ω to the current range of 20mA 120mA value varies depend on countries AC Impedance or Return Loss AC impedance is determined by the peripheral circuits ofT2 Transfo...

Page 117: ...coupler and current detector in order to be used in all countries including the countries with low series resistance Germany Switzerland Belgium Austria etc To use photo coupler PC814 you must carefully select the resister connected parallel 75Ω to the photo coupler in order to satisfy the voltage drop standards of England and a few other countries The diode connected to the current detector pin 5...

Page 118: ...ing Unit This is controlled by engine controller Using laser beam control exposure of OPC drum and the rotational principle of poly gon mirror it forms electro static latent image in the OPC drum with the video data received from engine It is the core part of LBP OPC drum synchronizes with the feeding speed of the paper and rotates When the laser beam inside LSU reach es at the end of polygon mirr...

Page 119: ...ess in generating the digital picture 3 4 2 3 Exposer After receiving bitmap image data from engine board LSU turns the laser diode either on or off depending on whether the digital data is present or absent in order to expose the OPC drum with the switched laser beam data The difference between the voltages generated at this point is presented above In other words the part exposed to the laser wi...

Page 120: ...e electric potential difference but it will not move to the unex posed part 800V 3 4 2 5 Transfer Unit Toner on the OPC drum is transferred to paper by transfer unit In other words the toner on the OPC drum surface is induct ed by the transfer roller electrified to approximately 1 3KV 600 2800V variable to the paper At this point the voltage 600 2800V variable is determined by temperature and humi...

Page 121: ...ller is made of silicon resin and its surface is also coated with Teflon The thermistor of the fixer unit detects the surface temperature of the heat roller and feeds this information back in order to retain 180 C while printing and 135 C while on standby The thermostat is used as the secondary safety device and it prevents overheat by shutting the main power when the heat lamp is overheated 3 4 2...

Page 122: ...ROL UNIT MHV PWM DEV EA SUPPLY EA REGULATION CIRCUIT OUTPUT CIRCUIT FEEDBACK THVPWM THVEA THVREAD PWM CONTROL UNIT SWITCHING CONTROL UNIT TRANS SWITCHING CONTROL UNIT TRANS FEED BACK THV REGULATION CIRCUIT REGULATION CIRCUIT THV ENVIRONMENT RECOGNITION CIRCUIT BIAS OUTPUT UNIT BLOCK DIAGRAM TRANSFER OUTPUT UNIT BLOCK DIAGRAM ...

Page 123: ...ng resistance Q402 via R408 and C403 and Q402 turns on When the current is accepted to Q402 Ic increases to the current proportional to time through the T401 primary coil and when it reaches the Hfe limit of Q402 it will not retain the on state but will turn to off As Q402 turns off TRANS N1 will have counter electromotive force discharge energy to the secondary unit sends current to the load and ...

Page 124: ...nd Q105 will turn on and the electric potential of the output unit will not retain the electric potential of zener and become GND level and thus the output voltage will become The output condition of developer voltage is the same as that of the supply voltage MHV PWM U2 7407 R411 2 2K 18V Q401 A708 R403 130K R402 82K R412 2K R404 27K C408 104 R406 2 2K R405 220K 24VS _ R408 47K R409 390 KA324 C403...

Page 125: ... electric 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 ...

Page 126: ...e engine controller ROM For ML 5000 or ML 5200 series this environment recognition setting is organized as follows First set the THV stan dard voltage Allow 200MΩ load to transfer output enable output and set the standard voltage 800V using VR201 Then set 78 CPU s recognition index value as the standard using VR302 This standard value with CPU makes sure that the current feedback is 4µA when outpu...

Page 127: ...4 4 1 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual 4 Schematic Diagrams 4 1 Main Circuit Diagram 1 6 APOLLO2 MAIN ...

Page 128: ...4 2 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual 4 2 Main Circuit Diagram 2 6 APOLLO2 MAIN ...

Page 129: ...4 3 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual 4 3 Main Circuit Diagram 3 6 APOLLO2 MAIN ...

Page 130: ...4 4 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual 4 4 Main Circuit Diagram 4 6 APOLLO2 MAIN ...

Page 131: ...4 5 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual 4 5 Main Circuit Diagram 5 6 APOLLO2 MAIN ...

Page 132: ...4 6 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual 4 6 Main Circuit Diagram 6 6 APOLLO2 MAIN ...

Page 133: ...4 7 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual 4 7 LIU Circuit Diagram 1 2 APOLLO2 LIU ...

Page 134: ...4 8 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual 4 8 LIU Circuit Diagram 2 2 APOLLO2 LIU ...

Page 135: ...EY2 24 25 KEY3 KEY4 26 5V GND5 R34 680 3K R49 R36 22K R7 22K SW39 SW25 SW40 SW24 GND5 SW23 R3 22K V3 SW6 SW4 V2 D1 MMSD914T1 SW11 22K R4 R5 22K 13 12 P1 6 SLS NNGR202TS 5V CD74HC14MX U3 LED4 R47 200 SW53 GND5 200 R40 22K R37 SW52 KSA1182 Y 1 3 2 C17 10uF 16V Q2 22K 5V R9 GND5 5V R41 200 300 R21 SW34 SW5 2 GND5 SW33 D3 MMSD914T1 P1 7 5V R51 3K SW48 GND5 SW47 5V GND5 5V GND5 LED3 SLS NNGR202TS R8 22...

Page 136: ...4 10 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual 4 10 Scan Circuit Diagram 200DPI APOLLO2 200DPI ...

Page 137: ...4 11 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual 4 11 Scan Circuit Diagram 300DPI APOLLO2 300DPI ...

Page 138: ...4KV R4 1W 1K 24VS C404 3KV 471 Q402 D526 Y R1 5 6K DESIGNED R410 1W 3 R509 12KF D404 1N4148 R403 110KF D401 4KV U1 D KA324 12 13 14 Q2 C1008 Y R411 2 2K DEV THV READ R3 100 R414 MGR1 2W 6MF T501 T1167 1 4 2 5 7 6 J S YOUN C504 333 1 OF 2 R413 MGR1 2W 6MF SUPPLY 18V C503 104 2 0 D403 1N4148 C1 104 C402 103 R408 47K T401 KAB 006 1 4 2 5 7 6 R507 27K R409 430 U2 A R407 240K C408 104 MHV PWM OPC C2 10...

Page 139: ...UN D204 6KV C209 6KV 471 R306 26 1KF 3 0 24VS R216 BR1 2W 30MJ VR301 10K R311 100KF 7407 VR201 50K D304 4KV REV D201 1N4148 C308 3KV 471 D GND R209 110KF ZD201 5 6V THV CN1 3 Q301 A708 Y C302 102 R205 1K D202 1N4148 T201 HVT 2A 1 4 2 5 7 6 D303 4KV C205 6KV 101 D302 1N4148 D203 1N4148 R210 510KF C306 2KV 680 R201 10K D207 6KV C208 6KV 471 C304 500V 103 13 12 C307 3KV 471 D206 6KV R308 33K SIZE A4 ...

Page 140: ...1 ADF Roller 3 8 3 12 CIS 3 8 3 13 Rear Cover 3 9 3 14 Top Cover 3 9 3 15 Tray 3 10 3 16 LSU 3 10 3 17 Transfer Roller 3 11 3 18 Engine Board 3 11 3 19 Pick up Roller Ass y 3 12 3 20 Knock up Ass y 3 13 3 21 Cap pad 3 13 3 22 Holder pad 3 14 3 23 Motor Ass y 3 14 3 24 Fan 3 15 3 25 Gear Pick up Ass y 3 15 3 26 Solenoid 3 16 3 27 HVPS Board 3 16 3 28 Hook Board 3 17 3 29 Fuser Ass y 3 17 3 30 Therm...

Page 141: ...nostics 4 8 4 3 1 Error Messages 4 8 4 4 Print Quality 4 10 4 5 Note for replacing Main board 4 10 4 6 Troubleshooting Flow Chart 4 11 5 Exploded Views and Parts List 5 1 5 1 Main Assembly 5 2 5 2 Shield Engine Unit Assembly 5 4 5 3 Engine Assembly 5 6 5 4 Frame Lower Assembly 5 8 5 5 Fuser Assembly 5 10 5 6 Plate Upper Unit Assembly 5 12 5 7 OPE Unit 5 14 5 8 Scan Upper Assembly 5 15 5 9 Front As...

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