Service Manual - Samsung ML-2571N Service Manual

Circuit Description
PCL_Board
3.3V
2 1
KDS226
D3
3
THERM_IN
C11
1nF
DGND
nFUSER
GDI_Board
3.3V
2 1
KDS226
D2
3
THERM_IN
DGND
nFUSER

Service Manual

12-2
3.3V
DGND
R15 R12
7.5K 33K
R8
1%
1K
R1
C4
470K
10nF
DGND
3.3V
R7
R20
10K
5.1K
3.3V
DGND
R3
7.5K
R16
1%
1K
R4
C23
470K
1nF
DGND
3.3V
R36
R37
10K
5.1K
3.3V
R10
15.4K
U1-2
5
+
7
6
LM393D
R3
14.7K
1%
Q3
MMBT2222ALT1
3
1
2
C15
10nF
DGND
Q5
MMBT2222ALT1
3
1
2
DGND
3.3V
R32
15.4K
U1-2
5
+
7
6
LM393D
R33 R15
33K 14.7K
1%
Q2
MMBT2222ALT1
C17
3
10nF
1
2
C3
10nF
DGND
Q9
MMBT2222ALT1
3
1
2
DGND
3.3V
R11
5.1K
D1
MMSD914T1
D7 3.3V
KDS226
3
1 2
C12
100nF
DGND
DGND
3.3V
R35
5.1K
D9
MMSD914T1
D1
3.3V
KDS226
3
1 2
DGND
DGND
Samsung Electronics
FUSER_ON
THERM
CN4-1
1
2
CN4-2
35301-0250
3.3V
8
U1-1
3
+
1
2
LM393D 4
FUSER_ON
Thermistor
CN1-1
1
2
35301-0250
3.3V
C26
100nF
8
U1-2
5
+
1
6
LM393D 1