Sharp ER-A771 (serv.man3) Service Manual ▷ View online
ER-A771VS
CIRCUIT DIAGRAM
8 – 18
NOT USED
/POFF
/STOP
/SCK
HTS
STH
/SHEN1
/KRQ
VCKDC
CKDCR
/POFF
ST
H
VCKDC
/STOP
VCKDC
/SHEN1
HT
S
/RESETS
/SCK
/KRQ
/RESETS
CKDCR
ST0
2
ST1
2
ST2
2
ST3
2
/CFSR
2
KEX0
2
KEX1
2
/KR3
2
/KR2
2
/KR1
2
/KR0
2
BUZZ
2
/CLRES
2
/CLCOM
2
/CLSOUT
2
/CLSIN
2
VCC
VCC
C8
15pF
CN1
MLX 5597-18C
PB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
C15
0.1uF
C3
470p
C1
470p
C2
470p
FB1
FB9
C4
470p
FB7
FB8
C13
470pF
+
C16
OS 10uF/10V
C9
15pF
X1
32.768kHz
+
C5
10u/10V OS
+
C6
10u/16V
C7
0.1u
FB2
FB3
FB4
FB5
FB6
R1
47K
R3
33
IC1
CKDC9
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
53
54
55
56
57
58
59
60
61
62
63
64
SB
SC
SD
SE
SF
SG
P4
P0
P1
P2
P3
MODR
CFSR
KEX0
KEX1
RQ
SKR0
ST0
ST1
ST2
ST3
POFF
STOP
DDIG
DCS
VCC
SCK
HTS
STH
SDISP
BUZZ
DSCK
SRES
DS0
SHEN
IRQ
KR0
KR1
KR2
KR3
RESET
OSC2
OSC1
GND
CL1
CL2
TEST
G0
G1
G2
G3
G4
G5
G6
G7
G8
G9
G5
G6
G7
G8
G9
G10
G11
G11
PO0
PO1
PO2
PO3
PO1
PO2
PO3
SA
X2
4.19MHz
C12
470pF
C10
470pF
C11
C14
0.1uF
R2
1M
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
2/2
CKDC
ER-A771VS
PWB LAYOUT
9 – 1
CHAPTER 9. PWB LAYOUT
MAIN PWB
TOP
ER-A771VS
PWB LAYOUT
9 – 2
BOTTOM
ER-A771VS
PWB LAYOUT
9 – 3
KEY
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