Samsung ML-4600/XET Service Manual page 96

Schematic Diagrams
Main Circuit Diagram(8/9)
+24VS
C82 R77
100nF 10K
LSU
CN12-1
1
2
3
4
5
6
7
8
9
10
11
GND24
ENGINE
12 R108 150
13 R44 150
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
C182 C183
100nF 100nF
GND24
C62 22pF
OSC2
2.386646MHz
C73 22pF
10-8
24V
5V 5V 5V 5V
C85 R15 R63
100nF 10K 10K
F3
STS104B
3 1
2
R112 100
C19
C53 C32
C83
C147
1nF 1nF
100nF
1nF
10nF
N.C
5V +24VS 5V
R83 R22
10K 10K
C161 C74
10nF 10nF
C40 C13
1nF 1nF
5V
B1 U7
9 7
R114 2.2K
*O Q4
10 5
O Q5
11
4
*I Q6
Q7 6
R121 100
R115
12 14
CLR Q8
1M
13
Q9
15
Q10
16 1
VCC
Q12
2
Q13
8 3
GND Q14
CD74HC4060F
C158
100nF
5V
C84
100nF
P_MOTOR
LREADY*
EXT_CLK
HSYNC*
14
LD_ON*
2
1
VDO*
SH_CLK U38-1
DM7407MX
7
C81
C153
C175
100pF
1nF
100pF
N.C
R80 R81
10K 10K
CLUTCH
FAN
MOTOR_A
MOTOR_PB
MOTOR_A*
MOTOR_PB*
C159 C160
10nF 10nF
LED_ERROR
LED_PAPER
LED_DATA
LED_TONER
KEY_TONER*
KEY_CANCEL*
5V
KEY_DEMO*
R31
10K
R113
100
SH_CLK
C80
5V
100pF
R20
10K
R45
100
EXT_CLK
C64
1nF
24V
COVER OPEN S/W
CN8-1
1
STS104B
2
3 3
35301-0350
2
GND24
THERMISTOR
CN11-1
1
THERM_A
2
THERM_B
35301-0250
5V
SERIAL
CN10-1
10
2
CN10-2
10
3
CN10-3
4
CN10-4 C4
33pF
5V
5V
R84
1K
U10
1 8
E2PROM_CS CS VCC
2 7
E2PROM_SK SK
DC
3 ORG 6 C136
E2PROM_DI DI
4 DO 5 100nF
E2PROM_DO GND
KM93C66G
C9 C8 C6 C7
33pF 33pF 33pF 33pF
C52 C29 C12 C30 C24 C23 C22
1nF 1nF 1nF 1nF 1nF 1nF 1nF
+24VS
F4
1
R70
RXD
R71
TXD
C5
33pF
5V
N.C
C133
100nF
CN5-1
DF11-10DP-2DSA
1
2
3
4
5
6
7
8
9
10
PANNEL
Samsung Electronics