Samsung ML-1200 Series Repair Manual Download Page 23

3-18

SCHEMATIC DIAGRAMS

Samsung Electronics

Repair Manual

+24V 1.8A

+5V 1.0A

GND

NO MARKING RESISTOR 1/4W-J (5%)

1

3

5

6

11

10

7

12

GND

CN5-14

CN5-13,15

CN5-16

EER2828

+5V

+24VS

GND

GND

1

2

17

4

9

6

3

18

15

5

16

12

7

14

8

13

1A

1B

2A

2B

PHASE1

+ENABLE1

RC1

SENSE1

E1

VREF

GND

E2

SENSE2

RC2

VCC

VBB

U1
A2918SWH

11

5

PHASE2

+ENABLE2

CN2

35303-0450

+5V

GND

GND

GND

GND

+24VS

+24V

CN4

35301-0350

GND

CN1

35303-0250

F501

250V 5A

R502

1/2W

560K

TNR501

TVR 10D 561K

C503

224

LF501

APOLLO12

D502

UF1010

C508

450V 150uF

V501

SCK-054

 T501

NP

  

NB

  

N24

PC501

K1010H

PC501

K1010H

U503

KA431

2

3

1

L502

10uH

CN501

L

F.G

N

C505

104

C501

222MAD

C502

222MAD

C511

103

R517

82

1W

R509

3W

47K

R507

30

C509

50V 33uF

C510

2A 223K

R510

1W

0.6

D504

ER1002FCT

C520

50V 1000uF

C515

10V

1000uF

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

KMOC3063

L501

300uH

C504

333

R501

1W 47

FUSIBLE

R503

1/4W

22

R508

1W 180

FUSIBLE

R513

1/2W

1.5K

R504

 

22K

R505

1W

100K

F502

250V 2A

C513

1uF

R518

22

 

R514

22

 

C522

1KV 102

C514

1KV 102

  

N5

D503

SB1040FCT

R506

1W

100K

U502

STRT-G6153

VCC

5

DRAIN

1

OCP

2

GND

3

FB

4

D501

ER102

B501

APOLLO12

C507

104

C512

1KV 221K

C521

50V 1000uF

C8

50V 47uF

C3

50V 47uF

C1

331

C2

331

C5

331

R11

56K

R10

1K

C7

103

R6

2W 0.37

R8

1K

R5

2W 0.37

C6

103

R15

56K

C4

331

R7

1.2K

R9

17.4K

R13

2.2K

R2

5.6K

Q3

1008-Y

D3

1N4003

R12

510

R1

5.6K

Q1

1008-Y

D2

1N4003

CN5-7,9,11

CN5-8,10,12

CN5-1,3,5

CN5-2,4,6

EXIT

+24VS2

FUSER_ON

EGMOT_PHA

EGMOT_PHB

+EGMOT_A1

+EGMOT_B1

1

2

3
4

FAN

1

2

3

CLUTCH

1

2

SMPS  Circuit Diagram (220V)

- This Document can not be used without Samsung's authorization -

Summary of Contents for ML-1200 Series

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...

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