Samsung ML-4600/XET Service Manual page 92

Schematic Diagrams
Main Circuit Diagram(4/9)
5V
F2
STS104B
1 3
2
C131
100nF
5V
F7
STS104B
1 3
2
C138
100nF
5V
R82
U11
10K
1
REF
2
*RESIN SENSE
470
R46 3
CT RESET
4
GND *RESET
TL7705ACD
C78 C174
33uF
10V
100nF
10-4
B10
8 5
INSTPAR
VCC OUT
OSC1
20MHz
C17 C59
NC GND
20MHz
33pF 22pF
1 4
B2
8 5
VCC OUT
OSC4
C16 C58
28.6925MHz
33pF 22pF
NC GND
1 4
5V
C191
1nF
R23 C77
10K 100nF
U40-2
74F14
8
VCC
3 4
7
6
5
R21
10K
R56 33
SYSCLK
FUSER*
R52 68
VCLK
F_RST*
5V
5V
U40-1
R102
1K
74F14
14
1 2
RESET*
C15
7
1nF
5V
R62
10K
3.3V 3.3V
D5
R69 R67
MMSD914T1 2K 5.6K
R65
THERM
5.6K
D8
R61 C11
MMSD914T1
10K 1nF
5V
C39
1nF Q3
KSC1623-G
FUSER_ON
U8-1
8
R89
3 D4
3
1K
1
2
R68
MMSD914T1 2
R66
4.7K
4
LM393D
5.6K
GND24 GND24
R91
4.3K
B3
THERM_A
B4
3
1
THERM_B
2
C20
Q1
1nF
KSC1623-G
Samsung Electronics