Samsung CLP-300 Series Service Manual page 73

Main Board(13/15)
1 2
A
+3.3V
+5V
DEVE_HOME
CN5-1
R5 R14
35303-0350
150
47K
1
2
R13
B 3
100
DGND
C
+3.3V
+5V
CN20-1
R163
DF11-6DP-2DSA R164
150
47K
1
3
D
R149
5
100
DGND
+3.3V
+5V
R148 R165
150 47K
E
2
4
R150
6
100
DGND
F
1 2
1
B B B B
Samsung Electronics
3 4
2 1
D6
DGND
KDS226 3
nDEV_HOME
C20
10nF
FUSER THER.
CN8-1
5045-02A
D4
KDS226
1
2
2 1
D32
DGND
3
KDS226
nP_EMPTY
C263
CN18-1
DF11-8DP-2DSA
10nF
2 1
D33
DGND
3
KDS226
nREGI_SENS
C264
10nF
3 4
This Document can not be used without Samsung's authorization.
5 6 7
+3.3V
R47
R24
4.7K
20K
1%
U5-1
8
3
1
2
4 MMBT2222ALT1
LM393D
+3.3V +3.3V
DGND
R18 R20
5.6K
15.4K,1%
DGND R31
2 1
3K,1%
3 L2
INSTPAR R19
L3
R33
INSTPAR 3
1
C81
C21 R32
100nF
2 10nF 30K,1%
Q1
3301-001122
C34
1nF MMBT2222ALT1
DGND
SCF
+24V +3.3V +3.3V
D30 D26 D25
1
KDS226 KDS226 KDS226
2 1 2 1 2 1 2
3
3 3 3
R153
4
R127
5
6
R155
7
8
C280 C279
100nF
100nF,50V
DGND
5 6 7
Schematic Diagram
8
FUSER_ON
D10
MMSD914T1
R41
3
1K
Q4 1
nFUSER_EN
2
R44
4.7K
DGND
33K
FUSER_THERM1
FUSER_THERM2
0
U5-2
5
7
6
LM393D
DGND
R126 R132
10K 10K
100
SCF_RXD
100
SCF_TXD
1K
nSCF_RDY
C268 C246 C270
1nF 1nF 1nF
Engineer K.C.LEE Digtal Printing Division
R&D 5
Drawn by
Size
TITLE:
R&D CHK S.D.AN
A3
DOC CTRL CHK
CLP-300(N)/CLX-3160N(FN)
MFG ENGR CHK
Main_V0.11
13/15
DEVE_HOME,SCF,FUSER THER
8
Service Manual
A
B
C
D
E
F
11-13