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Samsung ML-1440 Service Manual Download Page 47

Troubleshooting

4-9

Samsung Electronics

4-2-7  Uneven Density

• Description

Print density is uneven between left and right.

Check and Cause

Solution

1. The pressure force on the left and right

springs of the transfer roller is not even,
the springs are damaged, the transfer
roller is improperly installed, or the trans-
fer roller bushing or holder is damaged.

2. The life of the Developer has expired.

3. The toner level is not even on the devel-

oper roller due to the bad blade.

1. Replace both the left and right Spring

Holder.

2. Occur in the developer cartridge, replace

the developer and try to print out.

4-2-8  Background

• Description

Light dark background appears in whole area of the printing.

Digital Printer
Digital Printer
Digital Printer
Digital Printer
Digital Printer

Check and Cause

Solution

1. Recycled recording paper has been

used.

2. The life of the Developer has expired.

3. The up-to-down movement of the trans-

fer roller is swift? 

4. The HVPS is normal?

(Perform DCU diagnostic code 01~04)

1. B/S is not guaranteed when using recycled

paper.

2. Replace the Developer that has expired.

3. Clean the busing part of the transfer roller.

4. Replace the Developer if not solved by the

above direction 1~3.

Summary of Contents for ML-1440

Page 1: ...RVICE LASER PRINTER ML 1440 Manual LASER PRINTER 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: ...sung Electronics Co Ltd JUNE 2002 Printed in Korea VERSION NO 1 02 CODE JC 0066A This service manual is also provided on the web the ITSELF system f 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 2002 6 Samsung Electronics Digital Printing CS Group ...

Page 4: ...Repair Manual Repair Manual 1 Block Diagram 2 Connection Diagram 3 Schematic Diagrams CONTENTS SAMSUNG LASER PRINTER ML 1450Series ML 1440 ...

Page 5: ...Electronics ...

Page 6: ... Electronics Digital Printing CS Group Copyright c 2002 1 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 7: ... Blo ck S yste rm Bu s I nt erfa ce B loc k A rbite r EDO FPM DRAM Control 4Bank A D Bu s CPU Addr BUS CPU DATA BUS Sys Addr BUS Sys Data BUS Sys Cntl BUS ARM 7TDM I Cache 8 KB AD C UA RT 3 CH JB IG RAM 512B 512B OSC Video 53 0109277MHz CS RD W R NETWORK INTERFACE Option SYSTEM DATA BUS SYSTEM ADDR BUS CPU DATA BUS CPU ADDR BUS I O INTERFACE 74HC245 2EA 74LS273 3EA THERM STOR ADC INPUT THV READ AD...

Page 8: ...D30 7 D2 9 8 GND5 9 D28 10 D27 11 D26 12 GND5 13 D25 14 D24 15 EIRQ1 16 GND5 17 A 5 18 A 4 19 A 3 20 EIRQ0 21 A 2 22 D2 3 23 D22 24 A 17 2 5 D21 26 A 16 27 D20 28 A 15 29 D19 3 0 A 14 31 D18 32 A13 33 D17 34 A 12 3 5 D16 36 A 11 37 A6 38 A 10 39 RESET 4 0 A 9 4 1 WA IT 42 A 8 43 IOCS3 44 A 7 45 IOCS3 4 6 N C 47 N C 48 GND5 49 A1 8 50 RD 51 WE 5 2 GND5 53 N C 54 N C 55 EIRQ1 56 GND5 5 7 N C 58 5V 5...

Page 9: ...3 3 1 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual 3 Schematic Diagrams 3 1 Main Circuit Diagram 1 6 ...

Page 10: ...3 2 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual Main Circuit Diagram 2 6 ...

Page 11: ...3 3 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual Main Circuit Diagram 3 6 ...

Page 12: ...3 4 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual Main Circuit Diagram 4 6 ...

Page 13: ...3 5 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual Main Circuit Diagram 5 6 ...

Page 14: ...3 6 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual Main Circuit Diagram 6 6 ...

Page 15: ...3 7 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual 3 2 Engine Circuit Diagram 1 2 ...

Page 16: ...3 8 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual Engine Circuit Diagram 2 2 ...

Page 17: ...3 9 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual 3 3 SMPS Circuit Diagram ...

Page 18: ...egulator 74ACT 245 3state T ransceiver LC245 3state T ransceiver LCX273 Octal D F F 93C66 EEPROM 5V PACS1284 P1284 Netw ork X T AL 10MHz OSC 53 0109277MHz FS781 Freq Attn PC USB IEEE1284 Controller LSU A2918SWV Motor Driver 74HC4060 Ripple Counter LM393 Comparator Feed Sensor Empty Sensor Panel SM PS Inlet Ass y Power Cord 24V 5V Main Clutch Heat Lamp Narrow Sensor SCF FAN M anual Feed Sensor T he...

Page 19: ...egulator 74ACT 245 3state T ransceiver LC245 3state T ransceiver LCX273 Octal D F F 93C66 EEPROM 5V PACS1284 P1284 Netw ork X T AL 10MHz OSC 53 0109277MHz FS781 Freq Attn PC USB IEEE1284 Controller LSU A2918SWV Motor Driver 74HC4060 Ripple Counter LM393 Comparator Feed Sensor Empty Sensor Panel SM PS Inlet Ass y Power Cord 24V 5V Main Clutch Heat Lamp Narrow Sensor SCF FAN M anual Feed Sensor T he...

Page 20: ... sec samsung co kr 5 1 Main Assembly Exploded view page 5 2 5 2 Top Assembly Exploded view page 5 4 5 3 Frame Assembly Exploded view page 5 6 5 4 Exit Assembly Exploded view page 5 9 5 5 Fuser Assembly Exploded view page 5 11 5 6 Rack MPF Assembly Exploded view page 5 13 5 7 Drive Assembly Exploded view page 5 15 5 8 Pick Up Assembly Exploded view page 5 17 5 9 Cassette Assembly Exploded view page...

Page 21: ...msung Electronics Exploded Views and Parts List 5 1 Main Assembly Exploded view 0 1 2 3 16 4 5 22 6 7 8 21 20 9 10 11 12 13 14 17 18 15 25 19 22 1 22 1 23 24 26 SAMSUNG 26 1 26 2 26 3 26 7 26 7 26 4 26 5 26 6 ...

Page 22: ...6 01641L 1 O 220V 14 PBA MAIN CTRL LOW JC92 01392A 1 O 15 ELA UNIT FUSER JC81 00395B 1 O 110V ELA UNIT FUSER JC81 00395A 1 O 220V 16 CBF HARNESS LSU 1 X 17 SMPS HVPS JC44 00040A 1 O 18 MEA RACK HOU EXIT JC97 01338L 1 O 19 PMO DUCT FAN JC72 00582A 1 O 20 PMO DUMMY FACE MAIN L 1 X 21 PMO DUMMY FACE MAIN R 1 X 22 UNIT SENSOR MANUAL JC96 01814A 1 O 22 1 PMO CAP SENSOR 1 X 22 2 PBA SUB MANUAL SENSOR 1 ...

Page 23: ...5 4 Samsung Electronics Exploded Views and Parts List 5 2 Top Assembly Exploded view 0 1 2 9 4 4 6 5 8 7 10 11 12 13 3 ...

Page 24: ...MO LENS LED 1 X 6 PMO KEY BUTTON 1 X 7 PMO KEY SAVE MODE 1 X 8 PBA SUB PANEL_II 1 X 9 PMO SUPPORT MAIN 1 X 10 PMO STOPPER_EXIT P 1 X 11 PMO COVER REAR 1 X 12 PMO STACKER REAR 1 X 13 IPR SPRING LOCKER REAR 2 X S1 SCREW TAPTITE 6 X Model SEC Code ML 1440 XAA JC96 02269F ML 1440 XAC JC96 02269F ML 1440 XAP JC96 02269W ML 1440 XAX JC96 02269W ML 1440 XEG JC96 02269F Model SEC Code ML 1440 XEU JC96 022...

Page 25: ...3 25 1 25 2 24 2 24 1 25 24 27 26 42 9 41 43 23 22 29 4 22 1 22 3 22 2 22 4 14 13 7 21 16 17 5 16 1 16 2 16 3 16 4 3 46 46 45 45 47 47 48 8 19 2 18 2 18 1 19 1 11 0 15 15 1 15 2 15 3 2 44 39 19 1 3 38 20 36 30 31 30 3 30 2 30 1 31 2 31 3 31 1 32 32 1 32 2 34 33 50 35 51 28 28 1 28 2 18 10 49 1 49 3 49 2 49 ...

Page 26: ... HOLDER TR R JC96 01729A 1 O 16 1 PMO BUSHING TR 1 X 16 2 SPRING TR R 1 X 16 3 PMO TRANSFER HOLDER 1 X 16 4 IPR PLATE TR 1 X 17 GEAR TR 29 JC66 00039A 1 O 18 ELA UNIT GUIDE DEVE L 1 X 18 1 PMO GUIDE DEVE L 1 X 18 2 SPRING GUIDE DEVE 1 X 19 ELA UNIT GUIDE DEVE R 1 X 19 1 PMO GUIDE DEVE R 1 X 19 2 SPRING GUIDE DEVE 1 X 20 ELA HOU VARISTOR JC96 01772A 1 O 21 IPR TERMINAL TR 1 X 22 ELA UNIT SENSOR DEV...

Page 27: ...MO HOLDER PTL 1 X 31 3 PBA SUB PTL 1 X 32 ELA UNIT EMPTY ACT 1 X 32 1 PMO ACTUATOR EMPTY HAWK 1 X 32 2 SPRING EMPTY 1 X 33 PMO HINGE GUIDE FEED JC72 00321A 1 O 34 IPR GND ICU 2 JC70 00150A 1 O 35 PMO CAP SENSOR 1 X 36 GND MP 1 X 37 GEAR P UP DRV JC66 40219A 1 O 38 GROUND MOTOR 1 X 39 IPR GUIDE DUST 1 X 41 IPR OPC HAWK 1 X 42 CAP CONNECTOR L 1 X 43 CAP CONNECTOR U 1 X 44 MEC ROLLER TRANSFER JC75 10...

Page 28: ...Samsung Electronics 5 9 Exploded Views and Parts List 5 4 Exit Assembly Exploded view 13 14 S1 S1 16 17 9 7 8 6 5 10 11 4 2 3 1 0 S1 S1 ...

Page 29: ... EXIT JC97 01338L 1 O 1 PMO FRAME REAR 1 X 2 GEAR EXIT U ID 1 X 3 RING CS 2 X 4 GEAR IDLE 25 1 X 5 SPRING F DOWN 4 X 6 PMO HOLDER EXIT_F DOWN 4 X 7 PMO ROLLER EXIT MAIN 4 X 8 PMO ROLLER EXIT FR 4 X 9 MEC BEARING EXIT RING C 2 X 10 MEA UNIT ROLL EXIT 1 X 11 GEAR EXIT 1 X 12 MEC BEARING EXIT RING C 2 X 13 HOLDER LEVER 2 X 14 LEVER STACKING 2 X 15 GUIDE EXIT 1 X 16 RING C 2 X S1 SCREW TAPTITE 4 X ...

Page 30: ...Samsung Electronics 5 11 Exploded Views and Parts List 5 5 Fuser Assembly Exploded view 38 27 26 24 23 22 21 25 18 20 19 28 35 34 30 29 33 31 32 17 16 15 14 1 13 9 11 1 12 10 3 5 8 1 6 7 37 36 4 2 0 12 ...

Page 31: ...T_F UP 3 X 15 EXIT_F UP SPRING 3 X 16 SPRING CLAW 4 X 17 GUIDE CLAW 4 X 18 LAMP HALOGEN 4713 001135 1 O 110V LAMP HALOGEN 4713 001136 1 O 220V 19 NEX ROLLER HEAT JC71 20901A 1 O 20 MEC ROLLER PRESSURE JC75 00114A 1 O 21 FRAME FUSER 1 X 22 PMO GUIDE INPUT 1 x 23 GEAR FUSER Z32 1 X 24 BUSHING HR L 1 X 25 BUSHING HR R 1 X 26 SPRING BEARING PR 2 X 27 BUSHING PR 2 X 28 GUIDE REAR 1 X 29 SHAFT EXIT_F UP...

Page 32: ...mbly Exploded view 0 3 2 1 4 NO DESCRIPTION SEC CODE Q TY SA REMARK 0 ELA HOU MPF JC97 01345A 1 O 1 PMO FRAME_MP 1 X 2 PMO PLATE MANUAL 1 X 3 BRACKET MANUAL 1 X 4 SCREW TAPTITE 1 X Rack MPF Assembly Parts List SA Service Available O Service available X Service not available ...

Page 33: ...5 14 Samsung Electronics Exploded Views and Parts List 5 7 Drive Assembly Exploded view 0 2 8 6 7 4 3 5 13 1 16 16 15 9 12 11 10 14 ...

Page 34: ...EAR RDCN 90 24 1 X 6 GEAR OPC DRV 135 1 X 7 GEAR OPC DRIVE2 1 X 8 GEAR FEED DRV 1 X 9 GEAR CLUTCH 56 1 X 10 GEAR FUSER DRV23 1 X 11 PMO CLUTCH LEVER 2 X 12 SPRING CLUTCH 2 X 13 WASHER PLAIN 1 X 14 MPR POLYWASHER 8 1 X 15 WASHER PLAIN 1 X 16 SCREW MACHINE 5 X Drive Assembly Parts List SA Service Available NO DESCRIPTION SEC CODE Q TY SA REMARK O Service available X Service not available ...

Page 35: ...5 16 Samsung Electronics Exploded Views and Parts List 5 8 Pick Up Assembly Exploded view 0 8 2 2 5 5 11 7 9 24 25 6 26 12 18 13 3 19 1 10 15 15 5 2 22 4 20 17 16 10 21 5 2 14 23 ...

Page 36: ... 1 X 10 IPR SHAFT FEED IDLER 3 X 11 IPR SHAFT PICK UP 1 X 12 GROUND_FEED 1 X 13 IPR GUIDE_FEED 1 X 14 PMO HOUSING P UP 1 X 15 PMO ROLLER FEED L 2 X 16 PMO ROLLER FEED S 1 X 17 PMO SUB HOLDER FEED 1 X 18 PMO FRAME_FEED 1 X 19 PMO HOLDER FEED 1 1 X 20 PMO HOLDER FEED 2 1 X 21 PMO IDLE PICK_UP 1 X 22 PMO ROLL_FEED DRV 12 1 X 23 RMO RUBBER PICK_UP 1 X 24 RMO LEVER PICK_UP 1 X 25 SPRING PICK UP 12 1 X ...

Page 37: ...5 18 Samsung Electronics Exploded Views and Parts List 5 9 Cassette Unit Exploded view 270 0 17 16 15 18 14 13 12 11 1 2 3 5 4 6 10 9 8 7 19 ...

Page 38: ...R CAST 1 X 3 PMO GUIDE CASSETTE P 1 X 4 PMO HOLDER INDICATOR 1 X 5 PMO INDICATOR EMPTY 1 X 6 PMO LOCKER PLATE 1 X 7 SPRING LOCKER PLATE 1 X 8 PMO FRAME LEGAL 1 X 9 LABEL R PLATE 1 X 10 PMO REAR GUIDE CST 1 X 11 IPR GUIDE PAPER 2 X 12 LABEL R HEIGHT 1 X 13 IPR FINGER 1 X 14 PMO SIDE GUIDE 1 X 15 SPRING KNOCK UP 2 X 16 IPR NOCK UP PLATE 2 X 17 PAD KNOCK UP 1 X 18 GUIDE PLATE 1 X 19 SCREW 3 X O Servi...

Page 39: ...3 4 3 3 JAM 1 Page 4 14 4 3 4 JAM 2 Page 4 14 4 3 5 Multi Feeding Page 4 15 4 3 6 Paper rolled in the fuser Page 4 15 4 3 7 OPC Page 4 16 4 4 The cause and solution of the malfunction 4 4 1 All LEDs blinking Fuser Error Page 4 17 4 4 2 All LEDs blinking SCAN ERROR Page 4 17 4 4 3 Not function of the gear of the fuser due to melting away Page 4 18 4 4 4 Paper Empty Page 4 18 4 4 5 Paper Empty witho...

Page 40: ... out of the Feed Sensor 40 Feed Sensor off The paper has passed out of the Feed Sensor 50 Paper Out The paper has passed out of Exit Sensor 69 Sleep Mode The fuser power turned off to minimize the power consumption Error Code When detecting the malfunction the printing is stopped to indicate error code 60 62 68 Fuser Error The error in the fuser occurred There is a short circuit in the thermistor ...

Page 41: ...ight one of the three LEDs are on and 650 voltage output by DEV HV terminal Caution High voltage probe should be used 05 LSU Operating System The scanning motor of LSU is in operation the right LED of the three buttons on Press the Up button to Check LD LD is functioning and the middle button is on If the LD is normal all LEDs are on 06 Pickup clutch on The Solenoid in the printer is in operation ...

Page 42: ...ostic Codes 0 06 When you push the Enter button the main motor runs Diagnostic Code 00 If you push the up botton the current diagnostic Code stops and the next diagnostic Code starts 4 1 4 Self Test Button If the Self Test button pressed vertical lines are printed Turn the power on while pressing this button 89 shows in the DCU and the printer is warming up After warming up the printer is in READY...

Page 43: ...VOLTAGE ON LSU OPERATING TEST PICKUP CLUTC ON PAPER EMPTY SENSOR TEST FEED EXIT SENSOR TEST COVER OPEN SENSOR TEST FUSER TEST HOT BURN TEST CLEAN MESSAGE PRINT THV TRIGGER THV ON MP PICKUP ON FAN TEST PAPER SIZE SENSOR TEST SMD TEST GREEN STATUS CODE 88 99 STATUS CODE READY REGAL READY LETTER READY A4 READY EXECUTIVE READY B5 READY FOLIO READY A5 A6 PRINT START 1 st CASSETTE PRINT START MP PRINT S...

Page 44: ...ter Digital Printer Digital Printer Digital Printer Check and Cause Solution 1 Foreign matter stuck onto the window of internal lenses of LSU mirror 2 Foreign matter or toner particles between the developer roller and blade In case the life of the developer has been expired white lines or light image occur in front of the image 3 It may occur when Burr and foreign sub stances are on the window of ...

Page 45: ...ital Printer Digital Printer Digital Printer Digital Printer Check and Cause Solution 1 If dark or blurry black spots occur periodi cally the rollers in the Developer may be contaminated with foreign matte or paper particles Charge roller 38 5 mm interval OPC drum 96 mm interval 2 If faded areas or voids occur in a black image at intervals of 96 mm or black spots occur elsewhere the OPC drum surfa...

Page 46: ...ge and try to print out 3 No 2 Wait 30 minutes after printer is pow ered on before you start printing 4 No3 Clean up the contaminated area by the toner 5 Replace the HVPS if the problems are not solved by the above four directions 4 2 6 Dark Image or a Black Description The printed image is dark Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Check and Cause Solutio...

Page 47: ...and right Spring Holder 2 Occur in the developer cartridge replace the developer and try to print out 4 2 8 Background Description Light dark background appears in whole area of the printing Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Check and Cause Solution 1 Recycled recording paper has been used 2 The life of the Developer has expired 3 The up to down moveme...

Page 48: ...n contaminated by toner particles 2 Occur in the developer cartridge replace the developer and try to print out 3 Replace the engine board if not solved by the above directions 1 2 4 If not solved by the direction 3 check the transfer roller lifetime and replace it 5 Wait about 1 hour after power on before using printer 6 Occur in the developer cartridge replace the developer and try to print out ...

Page 49: ...talPrinter DigitalPrinter DigitalPrinter DigitalPrinter DigitalPrinter 70 mm Check and Cause Solution The temperature of the fuser is maintained high 1 Disassemble the fuser and remove the contaminated toner particles on the roller and clean the foreign matter between Thermistor and Heat roller Caution can be deformed 4 2 13 Satins on the Face of Page Description The background on the face of the ...

Page 50: ...Print out 1 Description Blank page is printed Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Check and Cause Solution Bad ground contacts in OPC and or devel oper Remove contamination of the terminals of the developer and the unit 4 2 16 Blank Page Print out 2 Description 1 Blank page is printed 2 One or several blank pages are printed 3 When the printer turns on s...

Page 51: ...P FACE UP H R Pr R CASSETTE EXIT SEN EXIT1 EXIT1 EXIT2 OUTBIN FULLSEN Check and Cause Solution 1 Check the Solenoid by using DCU diagnostic mode 06 2 Check if the pad is loose due to bad sealing of the side pad 3 Check the surface of the roller pick up for foreign matter 4 If continuous clusters occur check whether the assembly slot between shaft pickup and housing pickup become open or is broken ...

Page 52: ...e lever part is unformed in shape Check whether burrs occur in the assembly part of the actuator exit or not and if the actuator is smoothly operated Check if foreign matters and wire get caught in the actuator exit s operation 2 If the paper is stuck in the fuser dis assemble the fuser and remove the jammed paper and clean the surface of the pressure roller with dry gauze 3 Remove the jammed pape...

Page 53: ...cessary 2 Clean the pad friction with soft clothe dampened with IPA Isopropyl Alcohol 3 Use the smooth paper 4 3 6 Paper rolled in the fuser Description If contaminated at intervals of 57mm on the back of a paper Check and Cause Solution 1 Contamination of the pressure roller Background Hot off set 1 Disassemble the fuser clean the area between the Heat roller and Thermistor and remove the foreign...

Page 54: ... Solution 1 Paper is too much thin 2 The face of paper is curled 1 Recommend to use normal paper 2 How to remove the rolled paper in the OPC Remove the paper while turning the OPC against the ongoing direction Clean fingerprints on the OPC softly with soft cloth dampened with IPA Isopropyl Alcohol or tis sue ...

Page 55: ...lamp works properly 4 Check if the overheat circuit works properly 5 The fuser gear is defective due to melting away 1 If the thermostat is open replace the fuser and check following items 2 If the thermistor sensor device is located deep in the sponge replace the fuser 3 Check if the circuit of overheat mode works properly 4 Run DCU mode Perform DCU diagnostic code 10 4 4 2 All LEDs blinking Scan...

Page 56: ...ven when paper is loaded in the cassette Check and Cause Solution 1 Bending or deformation of the actuator of the paper sen sor 2 The function of the engine board is defective Perform DCU mode Perform DCU diagnostic code 8 1 Replace the defective actuator 2 Replace the engine board 4 4 5 Paper Empty without indication Description The paper lamp on the operator panel does not come on when the paper...

Page 57: ...en Error 1 Replace the hook lever if defective 2 Check the insertion of the Cover Open S W Connect 3 Replace the Main Control board or Cover Open S W 4 4 7 No lamp on when the cover is open Description The ERROR lamp does not come on even when the printer cover is open Check and Cause Solution 1 Check the connector CN8 and circuit of the cover switch department in the Main Control board Perform DC...

Page 58: ... the motor operation 1 Check the motor harness replace it if defective 2 Replace the SMPS if necessary 4 4 9 No Power Description When system power is turned on all lamps on the operator panel do not come on Check and Cause Solution 1 Check if the power input and SMPS output are normal 2 Check the inferiority of LED Panel on the front cover if the LED of Panel does not appear after normal warming ...

Page 59: ...etting Curved Description When printing vertical line gets curved Check and Cause Solution 1 If the supply of 24v is unstable in the Main Control board linking with LSU check drive by DCU Mode LSU Check 05 LSU Motor on 1 Replace LSU 2 Replace the Main Control board ...

Page 60: ...e exposure to direct light more than a few minutes may cause damage to the cartridge 4 5 2 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 redistributing the toner Shake the toner cartridge however you should replace the toner cartridge to solve the problem thoroughly 4 5 3 Judgment of a genuine Ton...

Page 61: ... on the paper periodically 1 Check the cycle of the falling of the toner 2 Check the appearance of both ends of the developer OPC drum 2 The center of the printed mat ter is contaminated with toner 1 Check whether foreign sub stances or toner are stuck to the terminal contact point of the developer 2 Check whether the state of the terminal assembly is normal 1 All of 1 2 3 above If it become bette...

Page 62: ...stance or toner are stuck to the terminal contact point of the developer 2 Check whether the state of the terminal assembly is nor mal 1 In case of 1 above Run OPC Cleaning Mode Print 4 5 times repeatedly to remove Especially check foreign sub stance on the OPC surface then remove them with a clean gauze moistened with IPA Isopropyl Alcohol not to damage OPC if necessary Never use usual alcohol 2 ...

Page 63: ...e charged roller terminal 3 The printed image is dark and ghost occurs 1 Check foreign substance attached to the terminal point of contact of the developer and the state of assembly Especially check the devel oping roller terminal 1 All of 1 2 3 above 1 Remove toner and foreign sub stances adhered to the contact point of the developer 2 The contact point of the unit facing that of the developer al...

Page 64: ... DCU to check the Error Status 2 Replace the printer cable If the problems not solved even after the cable replaced check the amount of the remaining tone refer to Toner Cartridge Service 4 5 3 Check if the connection between PC and printer port is proper If you use windows check if the printer dri ver in the controller is set up If the printer driver is properly set up check in which program the ...

Page 65: ... than the RAM problem In this case provide more space for the hard disk Secure more space using the disk utilities program 2 The connection of the cable and printer port is not proper Check if the connection is properly done and if the parallel port in CMOS is rightly set up 3 As a printer port Select ECP or SPP among SPP Normal ECP and EPP modes increase print ing speed SPP normal mode support 8 ...

Page 66: ...rt in the CMOS SETUP 2 Printer Driver Error 3 Error message from insufficient memory The printing job sometimes stops or due to insufficient virtual memory but it actually comes from the insuffi cient space of the hard disk 1 Select SPP Normal or ECP LPT Port the among ECP EPP or SPP in the CMOS Setup 2 Check the printer in My Computer to see if the printer driver is compatible to the present driv...

Page 67: ... unnecessary files to provide more space to start printing job 2 If there are some files with the extension name of jnl Delete them and Reboot the Windows to restart printing job 3 Shut down all other programs except the current one if possible 4 Delete the printer driver completely and reinstall it 5 After rebooting the computer check for viruses restore the damaged files and reinstall the progra...

Page 68: ...t expose the cartridge to direct room light or sun light and be careful not to scratch the drum surface 2 Turn the power switch off 3 Unplug all the cables from the printer 4 Replace with only an authorized component 5 Do not force to open or fasten a plastic material component 6 Be careful no obstacles are included when you reassemble components 7 When you reassemble components be careful small s...

Page 69: ...Disassembly and Reassembly 3 2 Samsung Electronics 1 Open the printer cover 2 Remove the cap 3 Hold the cap at the both end of the roller then remove the roller 3 2 Transfer Roller ...

Page 70: ...embly 3 3 Samsung Electronics 1 Remove two screws and remove the controller board 2 Remove five screws securing the board and unplug all connectors and then take the controller board out of the printer 3 3 Controller Board ...

Page 71: ...ws securing the pickup assembly 2 Take the assembly out 3 Check the pickup rubber wear If the rubber is heavily worn replace it with a new one 3 4 Pickup Assembly Squeeze this tab to remove the rubber Push the solenoid if you have difficulty to remove the pickup assembly ...

Page 72: ...d unplug one connector from the board then open the rear cover 3 Open the printer cover and open the MP tray 4 Remove two screws securing the main cover 5 Unlatch the front ends of the cover 6 Slide the main cover upward out of the printer 3 5 Main Cover Note that the power switch and the power connecter are properly released when you remove the cover ...

Page 73: ...ve the stoppers securing the MP tray 3 7 Exit Assembly 1 Before you remove the exit assembly you should remove Main Cover see page 3 5 2 Remove the exit tray in the direction of arrow 3 If you want to remove the roller shaft unlatch both ends of the shaft and take it out 4 If you want to remove the exit roller sqeeze the bottom of the roller and take it out ...

Page 74: ...you should remove Main Cover see page 3 5 Exit assembly see page 3 7 2 Remove four screws and remove the LSU Then unplug two connectors from the LSU 3 9 HVPS Board 1 Before you remove the HVPS board you should remove Main Cover see page 3 5 2 Remove four screws and take the HVPS board out ...

Page 75: ...ws securing the drive assembly from the gear bracket and unplug one connector from the motor and then take the drive assembly out 3 If you want to remove the motor from the drive assembly remove three gold screws securing the motor assembly to the gear bracket 4 Remove the motor assembly Remove two screws securing the motor to the motor bracket then take the motor out ...

Page 76: ...ove the fan you should remove Main Cover see page 3 5 2 Remove two screws and remove the fan Then unplug one connector 3 12 Solenoid 1 Before you remove the solenoid you should remove Main Cover see page 3 5 2 Remove two screws and remove the solenoid Then unplug one connector ...

Page 77: ... fuser assembly Remove two screws and take the thermostat out To remove the thermistor from the fuser assembly Remove one screw and release the wire from the three holders and then take the thermistor out To remove the halogen lamp from the fuser assembly Remove two screws and take the halogen lamp out of the fuser assembly Note When you reassemble the halogen lamp make sure that it is inserted in...

Page 78: ...S rings and two gears Then remove two screws securing the BRKT gear fuser and take the gear fuser out 3 Remove two screws and take the cover fuser out 4 Remove two screws and take the holder brush ant out 4 Remove the heat roller To remove the pressure roller from the fuser assembly Remove the roller pressure roller BRKT gear fuser CS ring Holder brush ant ...

Page 79: ... you remove the guide feed PTLlamp you should remove Main Cover see page 3 5 2 Release the latches on the PTL lamp from the MPF ass y and unplug one connector then remove the PTL lamp 3 Remove two screws and raise the guide feed in the direction of arrow 4 Remove the guide feed PTL lamp ...

Page 80: ... Remove nine screws securing the PCU shield and remove two screws securing the SCF connector and then take the PCU shield out of the printer 3 While you push the latch to release the PCU shield take the PCU shield out of the printer 4 Unplug all connectors from the PCU shield and remove the shield 3 15 Engine Board and Miscellaneous ...

Page 81: ...remove one screw securing the board Then release the wire from two holders and take the board out To replace the fuser sensor Remove two screws and take it out To replace the Cap sensor Remove two screws and take it out To replace the actuator empty Take the sensor out while you squeeze the both ends of the sensor Actuator empty ...

Page 82: ...ics To replace the actuator feed 1 Turn the mechanism back and push down the points as shown to unlatch the actuator feed 2 Turn the unit over again and remove the actuator feed To remove the transfer guide Remove three screws and take the guide out ...

Page 83: ...olio 7 3 4 Monarch 10 DL C5 C6 B5 Single Cartridge 6 000 sheets Set 3 000 sheets 75 000 sheets 75 000 sheets 75 000 sheets 75 000 sheets 3Key 4LEDs No YES YES Button 10 32 c 50 F 90 F 20 80 RH 20 40 c 4 F 104 F 10 90 RH Specifications 2 1 Samsung Electronics 2 Specifications RAM ROM EEPROM Cassette Face down Face up Temperature Humidity Temperature Humidity Engine Controller Paper Toner Periodic R...

Page 84: ... this printer from the wall outlet before clean ing Do not use liquid cleaners or aerosol sprays Use a damp cloth for cleaning 12 Do not touch the surface of the photo sensitive drum as marks or scratches may impair print quality 13 Do not expose the drum unit to direct light for pro longed periods 14 Use only standard papers OHP films and approved envelopes Feed OHP films though the manual feed s...

Page 85: ...se them to light 2 Turn the power switch off 3 Take out the power plug printer cable from the printer 4 Use only the same type of part as original when replac ing parts 5 Do not force to open or fasten plastic material compo nents 6 Be careful that small parts such as screws should not get in the printer 7 When disassembling assembling also observe small components are located in place 8 If you un...

Page 86: ...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...

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