Text preview for : 1750_Schematic Diagram.pdf part of samsung_ Printer Ml-1750 Service_Manual ML-1750_XSG



Back to : 1750_Schematic Diagram.pd | Home

11

S C H E M ATIC DIAG R A M S

11. Schematic Diagrams
11.1 PCL Main Circuit Diagram (1/7)

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

11-1

S C H E M ATIC DIAG R A M S

PCL Main Circuit Diagram (2/7)

11-2

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

S C H E M ATIC DIAG R A M S

PCL Main Circuit Diagram (3/7)

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

11-3

S C H E M ATIC DIAG R A M S

PCL Main Circuit Diagram (4/7)

11-4

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

S C H E M ATIC DIAG R A M S

PCL Main Circuit Diagram (5/7)

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

11-5

S C H E M ATIC DIAG R A M S

PCL Main Circuit Diagram (6/7)

11-6

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

S C H E M ATIC DIAG R A M S

PCL Main Circuit Diagram (7/7)

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

11-7

S C H E M ATIC DIAG R A M S

11.2 SPL Main Circuit Diagram (1/5)

11-8

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

S C H E M ATIC DIAG R A M S

SPL Main Circuit Diagram (2/5)

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

11-9

S C H E M ATIC DIAG R A M S

SPL Main Circuit Diagram (3/5)

11-10

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

S C H E M ATIC DIAG R A M S

SPL Main Circuit Diagram (4/5)

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

11-11

S C H E M ATIC DIAG R A M S

SPL Main Circuit Diagram (5/5)

11-12

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

S C H E M ATIC DIAG R A M S

11.3 HVPS Circuit Diagram (1/2)

24VS

5V

5V

R202
100 CON2-16 THV-PWM

Q201
A708-Y

D201
1N4148

C204
103

R209
100K

C207
103

C206 R210
4
5 6 5.6K 7 + 104 4

IT201 C210
6KV 221 2 ¡ 6 5 1 ¡ ¡ 7

R201
430

THV-sen

R208
10K

C945C-Y

Q202

C211
6KV 221

R204
47K

R205
22K

U102-B
KA324

D204
6KV

D205
6KV 6KV 221

D206
6KV

D203
D1NL20U C2383

11

THV R203
2K

C201
473

50K

C202
102

C203
681

Q203

C208
681

IT-01

C209

R212
1/2W 100K

THV

R206
180K-F

C205
473

R207

330K-F

ZD201
2.7V

R211
1/4W 4.7

D202
D1NL20U

TNR201 5N221K C212
2KV 221 24VS

TNR202 5N431K TNR203 5N431K

R213
MGR1/2W 100MF

5V

R302
470K

C302
103

R309
N.U

R303
470

C301
4 104

IT301

D302
4KV 6

2 ¡ R301 1K 5 ¡ 7

C304
3KV 151

R305
MGR1/2W 50M

CON2-17 THV-EA

Q301
C945C-Y 1 ¡

THV-sen R306
150KF

D303
1N4148

Q302 C306 INDEX
50K 473 C2383

103

C303

IT-01

ZD301
2.7V

R307
150K

R304
1/4W 4.7

D1NL20U

D301

5V

1N4148

D304

C305
104

D305 R308
CON2-18 THV-READ 1K 1 + 3 2 1N4148

C307
473

U102-A
KA324

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

11-13

S C H E M ATIC DIAG R A M S

HVPS Circuit Diagram (2/2)

5V C404 D401 1N4148 MHV-sen
12 + -

ZD401 R403 1.5M Q401 A708-Y
14

24VS

2.7V R406 5.6K R407 100K

472

C406 103 IT401 D404 4KV R410 1/2W 560K C409 3KV 471 R413 1/2W 100K
6 5 ¡ 7

MHV

MHV-PWM CON2-19 R401 47K C401 473 R402 22K C402 102 D402 1N4148

13

C403 331

U102-D KA324

R404 10K

R408 470

4

C405 104

2 ¡

R411 MGR1/2W 20MF MHV-sen

R405 10K Q403 C2316 Q402 C945C-Y ZD402 2.7V D403 D1NL20U R409 1/4W 4.7 C407 103

R414 MGR1/2W 15MF

1 ¡

IT-01 5V R412 30KF C410 221 MHV 20K ZD403 130V

OPC

C408 103

5V C504 D501 1N4148 BIAS-sen
10

ZD501 R503 330KF Q501 A708-Y
+ 8

24VS C506 103 IT501 R508 470
4

2.7V R506 5.6K R507 100K

472

D504 4KV

R510 1/2W 1.8M R511 C510 3KV 101

R513 1/2W 50K

SUPPLY

BIAS-PWM CON2-20 R501 47K C501 473

R502 22K C502 102

9

U102-C KA324 D502 C503 1N4148 681

R504 10K

C505 104

2 ¡

5

C509 3KV 471 ¡ 7

6

ZD503 200V

R505 10K Q503 C2316 Q502 C945C-Y ZD502 2.7V D503 D1NL20U C507 103

1 ¡

IT-01 5V

BIAS-sen R514 R512 30KF R515 MGR1/2W 15MF 1/2W 50K

DEV

MGR1/2W 10MF

R509 1/4W 10

C508 103

DEV 20K

24VS C112 50V 10uF
+ IN

U103 KA7805
OUT

5V
+

C113 25V 47uF

GND

11-14

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

S C H E M ATIC DIAG R A M S

11.4 SMPS Circuit Diagram : 220V (1/2)

Humming-V2 SMPS circuit diagram
SW1 3024-P3T4DBKBK F1 250V 5A

AR1 DSS-601M F2 250V 2A

C3

C2 472MAA

LF1 1508V

LF2 6003V D1,2,3,4 600V2A*4

472MAA R14 R2 C6 +

PT1 EER2828V C101 1KV 102 SW2 SS-5GLD CON2-11,12,13 +24VS 2.0A C105 50V 1uF CON2-9,10 GND

INLET1 TVR1 10D561K R1 1/2W 560K TH1 10D-13 C1 224 C4 104

R5 3W 47K 6

9

1KV 223

C5 400V 100uF

R102

R103

R104

R105

R106

R107

R108N.U

R113N.U

1/4W330K 1/4W330K

R15

1/8W100K 1/8W100K

R3

5 D5 UF4007 1

8

D101,102 200V 3A*2 C102 35V 1000uF

1/2W 3.3K

1/2W 3.3K

1/2W 3.3K

1/2W 3.3K

1/2W 3.3K

1/2W 3.3K

R4

R11 1W 47 FUSIBLE

C10 630V 333 U1 BTA12-600B

L1 100uH

10

1

3

D104 100V 1A

C103 16V 100uF

U105 7805

C104 25V 47uF

CON2-8 +5V 0.14A

2

1/8W100K

CON1 2 1

U2
PWM CONTROL 1 Drain STR-G6353 Source 2 GND OCP/FB 3 5 Vin 4

B1

D6 200V1A

VR1 500

8 R6 82 5uH R109 NU R110 330 PC101-A 817M-B C108 50V 1uF C107 16V 1000uF R111 1.8K-F D103 40V 3A L101

CON2-7 GND F101 250V2A CON2-3,4 +3.3V 1.0A

R13 1/4W 22

C11 50V 104 PC102 TLP3061F

R12 1W 180 FUSIBLE

PC101-B 817M-B R8 680 R7 6.8K R10 C7 35V 30K 22uF

3 7 4 11

C106 1KV 102

R114 1/2W 1.5K

R9 1W0.4

C8 681 C13 472MAA C12 472MAA

U101 TL431

1

R112 5.6K-F

C109 10V 470uF GND CON2-5,6

3 2

CON2-11,12,13(+24VS) CON2-26(FUSER-ON)
Q102 C1008-Y

NO MARKING RESISTOR 1/8W-J(5%)

CON2-1(FEED-SEN) CON2-2(PAPER-EMPT) CON2-14(MANUAL) CON2-15(THV-READ) CON2-16(LED-READY) CON2-17(THV-PWM) CON2-18(LED-ERROR) CON2-19(BIAS-PWM) CON2-20(THV-EA) CON2-21(LED TONER SAVE) CON2-22(MHV-PWM) CON2-23(FAN) CON2-24(KEY-DEMO) CON2-25(EXIT) CON2-26(FUSER-ON)

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

11-15

S C H E M ATIC DIAG R A M S

SMPS Circuit Diagram : 220V (2/2)

3.3V

3.3V

R125 R126

R127 R128

R115 R116

R117 R118

OP104 SG-288 2

CON2-23(FAN)

100
1

100

R119 2.2K Q101 KSC1008-Y R120 5.6K DGND

27K
3 4

D105 1N4003

100
1 2

27K
3 4

27K

100

27K

CON2-2(PAPER EMPTY) CON2-1(FEED SENSOR)

CON2-14(MANUAL) CON2-25(EXIT)
3

1

3

1

OP103 KPI-512

OP103 KPI-512

2

4

2

4

OP101 KPI-512

24VS

CON3

3 2 1
5268-03A

53015-0510

TNR101 OPC1 7D561

1 2 3 4 5

CON2-16(LED-READY) CON2-18(LED-ERROR) CON2-21(LED-TONER SAVE) CON2-24(KEY-DEMO))

CON4

11-16

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