Samsung 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.
Page 1: ...Repair Manual Repair Manual 1 Block Diagram 2 Connection Diagram 3 Schematic Diagrams CONTENTS LASER PRINTER ML 1200 Series...
Page 2: ...TOR FAN EXI T SENSOR HV PS B D MHV OPC GND SUPPL Y DEV TH V BUFFER MHVP WM BI ASPW M THVPWM POWER SW I TCH I N L ET L ED 4 3 KEY IEEE 12 84 CABLE VOL TAGE DETECT OR Crystal 10MHz Mai n Clock Osci l l...
Page 3: ...EV TH V MHVP WM BI ASPW M THVPWM POWER SWITCH L ED 4 3 KEY IEEE 12 84 CABLE Oscillator 48 MHz USB PC DEV_FUSE 5V IN LET SMPS C P U S3C46C0X01 74HCT273 74ACT273 Devided by 74HC406ON Crystal 6 7149 MHz...
Page 4: ...2 THERMI STOR 24V 24VS 1 2 3 1 2 3 COVER SWITCH 5V PEMPTY 1 2 3 4 1 2 3 4 FEED 5VGND SENSOR BOARD 36 PI N HOST COMPUTER IEEE1284 COMPATI ABLE CABLE J1 CN9 CN7 CN11 CN12 CN13 CN6 CN8 CN5 1 2 3 4 5 6 7...
Page 5: ...BLE J1 CN12 CN6 CN8 CN11 CN5 CN4 CN2 CN3 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 SMPS ENGINE 4PI N CONN ECTOR f or U SB USB CABLE CN7 DCU CN9 5V DCU_DATA 1 2 3 4 1 2 3 4 DCU_CLK 5V GND Not Used ENG I N...
Page 6: ...3 3 1 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual 3 Schematic Diagrams 3 1 GDI Main Circuit Diagram 1 5 This Document can not be used without Samsung s authorization...
Page 7: ...3 2 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual Main Circuit Diagram 2 5 This Document can not be used without Samsung s authorization...
Page 8: ...3 3 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual Main Circuit Diagram 3 5 This Document can not be used without Samsung s authorization...
Page 9: ...3 4 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual Main Circuit Diagram 4 5 This Document can not be used without Samsung s authorization...
Page 10: ...3 5 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual Main Circuit Diagram 5 5 This Document can not be used without Samsung s authorization...
Page 11: ...3 6 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual 3 2 PC L Main Circuit Diagram 1 9 This Document can not be used without Samsung s authorization...
Page 12: ...3 7 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual PCL Main Circuit Diagram 2 9 This Document can not be used without Samsung s authorization...
Page 13: ...3 8 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual PCL Main Circuit Diagram 3 9 This Document can not be used without Samsung s authorization...
Page 14: ...3 9 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual PCL Main Circuit Diagram 4 9 This Document can not be used without Samsung s authorization...
Page 15: ...3 10 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual PCL MainCircuit Diagram 5 9 This Document can not be used without Samsung s authorization...
Page 16: ...3 11 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual PCL Main Circuit Diagram 6 9 This Document can not be used without Samsung s authorization...
Page 17: ...3 12 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual PCL Main Circuit Diagram 7 9 This Document can not be used without Samsung s authorization...
Page 18: ...3 13 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual PCL Main Circuit Diagram 8 9 This Document can not be used without Samsung s authorization...
Page 19: ...3 14 SCHEMATIC DIAGRAMS Samsung Electronics Repair Manual PCL Main Circuit Diagram 9 9 This Document can not be used without Samsung s authorization...
Page 20: ...K R505 100KF R504 2K R503 100 R507 27K C503 104 R508 86 6KF R509 12KF R513 1W 3 R512 430 R511 47K C504 333 C1 104 C2 104 C3 35V 47uF R515 MGR1 2W 15MF R514 MGR1 2W 15MF ZD501 1W 100V D502 4KV Q502 D52...
Page 21: ...R217 BR1 2W 200MG R218 MGR1 2W 100KF C204 473 C306 2KV 680 C307 3KV 471 D303 4KV C308 3KV 471 Q303 D526 Y R314 2 2KF VR302 5K C305 333 R311 100KF Q302 A708 Y R310 2 2K R308 33K Q301 A708 Y R307 33K R...
Page 22: ...4 3K R512 330 R516 2 2K F R515 2 2K F C518 10V 470uF BD501 FL406 C506 222MAD C517 104 C519 104 R521 150 R520 47K OP501 ITR8406 S R519 500 5W TNR502 TVR 10D 561K LF502 APOLLO12 CN502 1 2 U501 BTA12 60...
Page 23: ...000uF R511 4 3K R512 330 R516 2 2K F R515 2 2K F C518 10V 470uF BD501 FL406 C506 332MAD C517 104 C519 104 R521 150 R520 47K OP501 ITR8406 S R519 500 5W LF502 APOLLO12 CN502 1 2 U501 BTA12 600 PC502 KM...
Page 24: ...3 19 Samsung Electronics SCHEMATIC DIAGRAMS Repair Manual 3 5 Panel Circuit Diagram This Document can not be used without Samsung s authorization...
Page 25: ...This Service Manual is a property of Samsung Electronics Co Ltd Any unauthorized use of Manual can be punished under applicable International and or domestic law...
Page 26: ...ung 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 appe...
