MX-M350N, MX-M350U, MX-M450N, MX-M450U (serv.man4). Circuit Diagram - Sharp Copying Equipment Service Manual (repair manual). Page 120

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MX-M350/M450  CIRCUIT DIAGRAM / 回路図  3 - 97
VAREF
(1,5,8)
PD
(8)
STMPS
(1)
/STMPS
(8)
PD_CPU (1)
/PNC
(8)
PNC
(3)
/TC
(8)
+12V1
VAREF
+24V3
+3.3V
VAREF
+5V2
+24V3
no-mounting
TP250
3
2
1
+
-
IC19A
LM324D
+
-
K
A1
A2
D34
DAN202U
ZD1
HZU3.0B2
ZD1
HZU3.0B2
C85
223Z
R48
10KJ
R48
10KJ
G
D
S
Q13
2SK3065
Q13
2SK3065
D21
CRH01
D20
CRH01
5
6
7
+
-
IC19B
LM324D
+
-
C79
102K*
R90
10KJ
R86
1.5KJ  0.25W
R86
1.5KJ  0.25W
R79
10KF
R57
1KJ
R57
1KJ
C78
223Z
10
9
8
+
-
IC19C
LM324D
+
-
K
A
C
D24
DA204U
G
D
S
Q14
2SK3065
G
D
S
Q1
2SK3018
D40
CRH01
R93
1KJ
TP259
TP249
TP249
D28
MA704A
12
13
14
+
-
IC19D
LM324D
+
-
R80
30KF
TP146
TP146
8
8
7
7
6
6
5
5
D
C
B
A
SCANNER CONTROL PWB (OPAMP & Comparator)

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