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ER-A770 (serv.man8). Service Manual Draft - Sharp EPOS Service Manual (repair manual). Page 44

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2. CKDC PWB
8
7
6
5
4
3
2
1
A
B
C
D
1
2
3
4
5
6
7
8
D
C
B
A
CKDC
-29V
-29V
R29
100K
X4
G
1
1
G
1
0
G
9
G
8
G
7
G
6
G
5
G
4
S
A
-29V
R58
R59
R62
R60
R61
R63
R64
R57
R65
100K
X9
R48
100K
R47
100K
X8
R46
R45
R44
R43
R42
R41
R40
/POFF
/STOP
/SHEN
/IRQ
/SCK
HTS
STH
/RESETS
POPUP CON1
-29V
VCC
VCKDC
+24V
FB2
FB3
FB4
FB5
FB6
FB7
FB8
FB9
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
CON4
MLX 5597-18CPB
C2
10u/16V
C3
0.1u
C6
470p
FB1
SB
SC
SD
SE
SF
SG
COM/AP
DP
ID
CKDCR
ST0
ST1
/CFSR
KEX0
KEX1
CKDC PWB2
KEYIF.SCH
ST1
ST0
KEX1
KEX0
/CFSR
/KR[0..3]
ST3
ST2
C4
470p
C5
470p
C7
470p
VCC
PJ1
PJ
SB
  1
SC
  2
SD
  3
SE
  4
SF
  5
SG
  6
P4
  7
P0
  8
P1
  9
P2
 10
P3
 11
MODR
 12
CFSR
 13
KEX0
 14
KEX1
 15
RQ
 16
SKR0
 17
ST0
 18
ST1
 19
S
T
2
2
0
S
T
3
2
1
P
O
F
F
2
2
S
T
O
P
2
3
D
D
I
G
2
4
D
C
S
2
5
V
C
C
2
6
S
C
K
2
7
H
T
S
2
8
S
T
H
2
9
S
D
I
S
P
3
0
B
U
Z
Z
3
1
D
S
C
K
3
2
SRES
33
DS0
34
SHEN
35
IRQ
36
KR0
37
KR1
38
KR2
39
KR3
40
RESET
41
OSC2
42
OSC1
43
GND
44
CL1
45
CL2
46
TEST
47
G0
48
G1
49
G2
50
G3
51
G
4
5
2
G
5
5
3
G
6
5
4
G
7
5
5
G
8
5
6
G
9
5
7
G
1
0
5
8
G
1
1
5
9
P
O
0
6
0
P
O
1
6
1
P
O
2
6
2
P
O
3
6
3
S
A
6
4
IC8
CKDC9
VCC
G0
G1
G2
G3
/IRQ
/SHEN
/RESETS
/KR3
/KR2
/KR1
/KR0
CKDCR
R33
1M
X2
4.19MHz
X1
32.768KHz
C8
15p
C9
15p
R32
R31
R30
D26
1SS353
  2
3
1
Q1
DTC114YK
VCC
/
P
O
F
F
/
S
T
O
P
/
S
C
K
H
T
S
S
T
H
VCC
C16
0.1u
C11
1000p
ST2
ST3
1
2
3
4
5
6
7
8
9
10
11
CON3
-29V
G3
G2
G1
G0
ID
DP
POPUP CON2
NOT USED BY ER-A770
VFD POWER SUPPLY
VF2R
COM/AP
SF
SG
SE
SD
G6
G5
G4
SC
SB
SA
VF1R
VF2
VF1
-29V
R27
0
R34
0
*               IS NOT USED.
VF1
VF2
-29V
1
2
3
4
5
6
7
8
9
CON5
BZ1
BUZ
VCC
C12
10u/16V
C1
10u/10V 
OS
1/2
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