Samsung CLP-300 Series Service Manual page 75

Main Board(15/15)
1 2
+24VF
HVPS
CN21-1
DF11-24DP-2DSA(20)
1
A
2
C294
3
100nF
4
DGND
5
6
B
7
8
9
10
11
12
C
DGND
13
14
15
C242 C297 C274
10nF 10nF 10nF
D
DGND
16
+5V
17
18
E
19
20
21
22
23
24
F
DGND
1 2
Samsung Electronics
3 4
+5V
C251
100nF
U20-1
DM7407MX
14
DGND
2 1
nDEV_EN
7
U20-6
DGND
DM7407MX
12 13
PWM_DEV_VPP
U20-2
DM7407MX
4 3
PWM_DEV_AC
U20-5
10 11 DM7407MX
PWM_DEV_DC
U20-3
DM7407MX
6 5
PWM_ITHV
U20-4
DM7407MX
8 9
PWM_THV
U22-5
DM7407MX
10 11
PWM_MHV
U22-6
DM7407MX
12 13
nTHV_EN
N.C
R134 10K
ITHV_READ
R159 10K
THV_READ
R124 10K
MHV_READ
+3.3V
R180 2 1
D24
47K KDS226 DGND
3
nP_EXIT
R146
+24VF
100
C258
10nF DGND
R116
3K,1% 3K
D28
M4
3
DEV_SOL1
2
DEV_SOL2
DEV_SOL3
DEV_SOL4
R135 10K
OUT_TEMP
DGND
3
2
DGND
3 4
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5 6
+5V +24V
C185
C166
C171 100nF
C208
100nF
100uF
100uF
16V
50V
2401-000042 2401-000207
DGND
+5V_LSU
CN26-1
35303-0250
1
2
+5V_COVER SWITCH
C293
+5V
100nF 2203-005249
DGND
Q15
MMBT2222ALT1 2
R123 1.2K
1
FAN_MAIN
3
Q19
MMBT2907A
Q17
MMBT2222ALT1
R136 1.2K
1
WASTE_LED
5 6
Schematic Diagram
7 8
+24VA +24VF
SMPS
A
CN15-1
DF11-16DP-2DSA
2 1
FUSER_ON
4 3
6 5
8 7
10 9
12 11
14 13
B
16 15
C196
100nF C240
100uF
50V
2401-000207
C
+24VA +24VF
CN16-1
5096-02C
1
2
+24V_COVER SWITCH
D
R179
+3.3V +24VF
300
nCOVER_OPEN
R188
4.7K
2 1
R187
R99
560
1 22K
3
R178 D21
3
6.2K
1 KDS226 E
2
Q18
R104
C225
MMBT2222ALT1 5.1K
100nF
DGND
Digtal Printing Division
Engineer K.C.LEE
R&D 5
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TITLE:
R&D CHK S.D.AN F
A3
DOC CTRL CHK
CLP-300(N)/CLX-3160N(FN)
MFG ENGR CHK Main_V0.11
HVPS, SMPS, COVER_OPEN 15/15
7 8
Service Manual
11-15