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Schematic Diagram
Service Manual
11-15
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Samsung Electronics
Main Board(15/15)
A
5
B
81 6
HVPS
C
8
2
SMPS
HVPS, SMPS, COVER_OPEN
6
N.C
Size
3
F
+5V_COVER SWITCH
+24V_COVER SWITCH
2203-005249
7
A
C
73
TITLE:
4
4
D
F
B
CLP-300(N)/CLX-3160N(FN)
12
E
+5V
15/15
A3
Drawn by
5
D
E
R&D 5
Engineer K.C.LEE
R&D CHK S.D.AN
DOC CTRL CHK
MFG ENGR CHK
Digtal Printing Division
Main_V0.11
100nFC249
C258
4
10nF
C196
100nF
R123 1.2K
C274
10nF
DGND
1
2
14
35303-0250
CN26-1
12
10nF
C242
16
D24
KDS226
1
3
2
DGND
21
1
3
2
+24VA
MMBT2222ALT1
Q15
16
47K
R180
C273
5096-02C
CN16-1
1
1nF
R187
R179
560
14
300
6
1nFC290
C288
1nF
1nF
C272
NC7
1nF
3
4
R124 10K
11
100
R146
8
10
9
8
10nF
C297
M4
D28
15
+5V_LSU
2
U20-3
DM7407MX
56
18
1nF
C296
C257 1nF
C253 1nF
R135 10K
+3.3V
13
R116
3K
1nF
C247
3K,1%
7
1
14
2
+24VF
C208
DGND
DM7407MX
U20-1
7
100uF
50V
2401-000207
7
+5V +24V
R99
22K
U20-2
DM7407MX
34
5.1K
R104
100nF
C251
13
DGND
+3.3V
16V
100uF
C171
2401-000042
R188
DM7407MX
U20-4
98
+24VA
4.7K
U20-6
DM7407MX
1312
DGND
+24VF
DGND
6
+5V
C299 1nF
DGND
10
+24VF
DM7407MX
U20-5
11
1
C298 1nF
10
CN15-1
DF11-16DP-2DSA
23
CN21-1
DF11-24DP-2DSA(20)
1
5
DGND
DGND
DGND
50V
100uF
C240
2401-000207
10KR159
4.7KR131
1nF
NC6
DGND
DM7407MX
U22-6
1312
R178
1nF
6.2K
17
3
C287
100nF
10K
C309
15
R134
5
DGND
22
Q18
1
3
2
+24VF
MMBT2222ALT1
2
C259 1nF
11
DM7407MX
U22-5
1110
3
2
24
MMBT2907A
Q19
1
C276
+24VF
1.2K
1nF
R136
R147 4.7K
100nF
C294
19
20
KDS226
D21
1
3
2
C225
100nF
12
+5V
C185
100nF
100nF
C166
9
1nF
C275
MMBT2222ALT1
Q17
1
3
2
C293
DGND
100nF
2
WASTE_LED
nP_EXIT
FAN_MAIN
THV_READ
ITHV_READ
MHV_READ
DEV_SOL4
DEV_SOL3
DEV_SOL2
DEV_SOL1
PWM_DEV_VPP
nCOVER_OPEN
OUT_TEMP
FUSER_ON
PWM_DEV_AC
PWM_DEV_DC
PWM_ITHV
PWM_THV
PWM_MHV
nTHV_EN
nDEV_EN