Samsung SCX 4520, SCX-4521F, SCX4720F Schematic

Page 1
Schematic Diagram
Service Manual
11-1
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11. Schematic Diagrams
11.1
Page 2
Schematic Diagram
Service Manual
11-2
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Main Board(2/16)
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Service Manual
11-3
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Main Board(3/16)
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Service Manual
11-4
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Main Board(4/16)
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Service Manual
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Main Board(5/16)
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Service Manual
11-6
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Main Board(6/16)
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Schematic Diagram
Service Manual
11-7
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Main Board(7/16)
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Schematic Diagram
Service Manual
11-8
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Main Board(8/16)
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Schematic Diagram
Service Manual
11-9
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Main Board(9/16)
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Service Manual
11-10
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Main Board(10/16)
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Schematic Diagram
Service Manual
11-11
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Main Board(11/16)
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Schematic Diagram
Service Manual
11-12
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Main Board(12/16)
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Schematic Diagram
Service Manual
11-13
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Main Board(13/16)
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Schematic Diagram
Service Manual
11-14
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Main Board(14/16)
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Schematic Diagram
Service Manual
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Main Board(15/16)
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Service Manual
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Main Board(16/16)
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Service Manual
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11.2
LIU Board
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Schematic Diagram
Service Manual
11-18
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11.3
OPE Board
Page 19
Schematic Diagram
Service Manual
11-19
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11.4
USB Host Board
Page 20
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Service Manual
11-20
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11.5
SMPS_1 10V
Page 21
Schematic Diagram
Service Manual
11-21
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SW1/B
F1
250V8A
LF1
SW0610V
AR1
DSS-601M
R15
PT1
C3
472MAA* 2
C2
F2
250V3.15A
R1
R14
1/4W330K*2
C1 474
TNR1
10D561K
3024-P3T4DBKBKR2
C5
R2
1/4W82K* 2
C8 105
C14 333
R16 220
D7
1N4148
R10 22
C12 472M AA
C13 472M AA
C15 222
R17 220
GND7SOFT-START2F/B
3
I-SENSOR
4
GATE
5
VCC
6
U1
ICE2BS01
R7 200
R6 1/4W22
D6
200V1A
R3
C4 474
BD1
D3SBA60
TH1
8D-15
LF2
CH925130
C9 1KV221
R5 3W47K
D5 UF4007
C6 1KV223
R9 W.W1N0.47
Q2 SPA07N60C3
B1
PC101 817M-B
R128 47K
OP103 KPI -512
R126 47K
R127 1/4W150
R125 1/4W150
OP104 2G-288
R116 47K
Q101 KSC1008-Y
R120
5.6K
R119
2.2K
D105
1N4003
R133 47K
R132
1/4W150MINI
ZD3
200V
ZD2
200V
ZD1
200V
R115
1/4W150
OP102
KPI -512
C102
35V1000uF
C101
1KV222
200V10A
B101
TNR101
7D561
R8 12K
C7
35V47uF
ZD4 18V
CON1
R114 1/2W1.5K
PC102
TLP3061F
Q1
BTA12-600B
C10
630V333
R13 1/4W22
Q102 C1008-Y
R11
1W47
R12 1W180
L1
AY70
C11
50V104
C106 1K471
D103
D102
40V3A*2
R109 N.C
PC101 817M-B
C108 50V1uF
R110 1K
U101 TL 431
L101 5uH
R111
2.7KF
R112
2.6KF
C107
10V1500uF
F101
250V2A
R108 1W150J
C109 10V470uF
R106
R105
R104
R102
R103
R131
R130
R129
R107
R113
1/2W3.3K*10
SW2
SS-5GL
C105 50V1uF
R117 50m
R118 50m
INL ET
INL ET
CON2-21
CON2-22
CON2-19
CON2-20
CON2-15
CON2-14
CON2-17
CON2-2
CON2-1
CON2-26
CON2-25
CON2-24
CON2-23
5V
CON2-2
CON2-1
CON2-14
5V
CON3-1
CON2-23
CON3-2
CON3-3
+24VS
1
2
3
5V
CON2-24
GND2
GND1
OPC1
24VS
FUSER-ON
GND
5V(1.5A)
24V(0.7A)
24VS(2.5A)
GND
1/2W 560K
SW1
6
5
7
9
EER3435V
1
220uF
400V
30*30
12
4
3
10
FEED-SEN
PAPER-EMPT
THV-PWM
MA NUAL
THV-READ
THV-EA
BIAS-PWM
MH V-PW M
N.C
FUESR-ON
FAN
EXIT
N.C
PAPER EMPTY
FEED SENSOR
MA NUAL
FAN
CON3
EXIT
CON4
WB
D101
D GND
FUSIBL E
FUSIBLE
WB
CON2-5,6,7
CON2-3,4
CON2-16
CON2-11,12,1
3
CON2-9,10,18
11.6
SMPS_220V
Page 22
Schematic Diagram
Service Manual
11-22
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R302 470K
C302 CE-103
R213 BLR1/2W100MF
VA201 7N221K
VA202 7N431K
VA203 7N561K
ZD301
2.7VB
Q302 C2383
C304 3KV151
R305 BLR1/2W50MJ
C305 104
D304 1N4148
R212 RDS1/2W100KJ
D303 1N4148
D302 4KV
24V
C212 2KV221
IT301
IT201
R304
1/4W4.7
D305 1N4148
R210
5.6KJ
D204
6KV
C209
6KV221
C211 6KV221
C210 6KV221
D205 6KV
D206 6KV
ZD201
2.7VB
R209 100K
R208 10K
C205 MY-2A471
R207 330KJ
5V
D201 1N4148
C203 681
R205
22K
R204
47K
C201
MY2A473
5V
R202 100
R201
430
9
8
Q201 A708-Y
R206 130KF
R203
2KJ
C115 104
+
5
-
6
7
11
4
U102/B KA324
Q202 945C-Y
C208 MY-2A681
24V
C206
MY-2A104
D202 D1NL20U
D203
D1NL20U
R211
1/4W4.7J
Q203
C2383
C202 102
R306
100KF
5V
3
4
R301
5.6K
R308 1KF
INDEX 50K
C306 MY2A473J
+
3
-
2
1
IC105/A
C307 MY2A473J
ZD302
2.7VB
R310 200J
R307 150KF
R309 3KF
C303 103
C301
MY2A104J
D301 D1NL20U
Q301
945C-Y
THV 100K
R303
470J
THV
THV
THV_READ
>>THV-sen
>> THV
4
2
5
1
4
2
5
1
6
7
+5V
7
6
>>
CN2-#17
THV PWM
THV-sen
CN1-#20
THV -EA
THV REA
D
CN2-15
+5V
11.7
HVPS
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