Sharp ER-A220 Service Manual

8 7 6 5 4
3
2 1
A B
C D
12345678
D C
B A
3. KEY I/F PWB CIRCUIT DIAGRAM
G1' G2' G3' G4' G5' G6' A' B' C' D' E' F' G' DP' PDSG7
G1' G2' G3' G4' G5' G6' PDSG7 B' C' D' E' F' G' A' DP'
G7'
G7'
G8'
G8'
G9'
G9' G10'
G10'
15
1
ER-A220
52807-1510
PDSG7
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20
CN14
R147
JMP
R146
JMP
D21
1SS133
D22
1SS133
D23
1SS133
D24
1SS133
D25
1SS133
D26
1SS133
D27
1SS133
D28
1SS133
/S0 /S1 /S2 /S3 /S4 /S5 /S6
1 2 3 4 5 6 7 8 9 10 11
CN10
52045-1145
DISP SELECT
G7'
PDS
for POPUP
for REAR DISPLAY
P0 P1
/S0
P2
/S1
P3
/S2 /S3 /S4
/S7
/S5 /S6 /S8 /S9
VCC
VCC
P10 P11 P12 P13
VCC
C105
10uF/16V
C106
10uF/16V
A
1
B
2
C
3
G2A
4
G2B
5
G1
6
Y7
7
GND
8
VCC
16
Y6
9
Y5
10
Y4
11
Y3
12
Y2
13
Y1
14
Y0
15
IC19
74HC138
A
1
B
2
C
3
G2A
4
G2B
5
G1
6
Y7
7
GND
8
VCC
16
Y6
9
Y5
10
Y4
11
Y3
12
Y2
13
Y1
14
Y0
15
IC18
74HC138
C101 0.1uF C102 0.1uF
C107 C108 C109 C110
100pF X 4EA
P91
P91
VCC
PDS
R145
10K
R134
12K
R135
12K
R136
12K
R137
12K
D32
1SS133
Q40
KRC111M
or DTA114TS
D20
1SS133
D29
1SS133
D30
1SS133
/S7 /S8 /S9 /S8
P[92..97]
P 9 2
P 9 3
P[92..97]
VCC
P 9 1
R138
12K
R139
12K
R140
12K
R141
12K
R142
12K
R143
12K
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1 0
1 1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
2 0
2 1
CN16
52045-2145
/S7
R127 R128 R129
R130
D31
1SS133
S1
SSS312
/S1
P 9 4
P 9 5
P 9 6
P 9 7
VLED
2.54mm Pitch
/ S 0
/ S 1
/ S 2
/ S 3
/ S 4
/ S 5
/ S 6
/ S 7
VCC
R144
47K
M D R
P90
47K * 7EA
R131
R132
R133
C103
100pF
C104
100pF
VOFF /RESET
GND
VLED
P90 P91 P92 P93 P94 P95 P96 P97 VOFF
VLED
P90 P91 P92 P93 P94 P95 P96 P97 VOFF
VCC
a b c d e f g dp
P10 P11 P12 P13
P11 P12 P13
/RESET
/RESET
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
CN15
52044-3445
P10
/S9
/S9
HDSP5621 X 5
a b c d e f g dp
C100 0.1uF
GND
Q24 Q25 Q26 Q27 Q28 Q39
Q38Q29Q30Q31Q37Q36
G 1 '
G 2 '
G 3 '
G 4 '
G 5 '
G 6 '
41
7
1 8
1231
5
1 6
971
2
5681
0
1 1
1 4
1 3
FND1
41
7
1 8
1231
5
1 6
971
2
5681
0
1 1
1 4
1 3
FND2
41
7
1 8
1231
5
1 6
971
2
5681
0
1 1
1 4
1 3
FND3
R148
120
R149
120
R150
120
R151
120
R152
120
R153
120
/S[0..9]
G 1 0
'
Q20 Q21 Q22 Q23
Q35Q34Q33
Q32
KTA1273 X 10
KRA101M X 10
/S[0..9]
G 7 '
G 8 '
G 9 '
41
7
1 8
1231
5
1 6
971
2
5681
0
1 1
1 4
1 3
FND4
41
7
1 8
1231
5
1 6
971
2
5681
0
1 1
1 4
1 3
FND5
or DTA143ESA
R154
120
R155
120
R156
120
R157
120
1 8
1
IC17A
1 7
2
IC17B
1 6
3
IC17C
9 PIN :GND 10PIN : NC KID65083AP
dp efg
F '
G '
R6 30
R7 30
R8 30
D P
'
fg
d p
1 5
4
IC17D
1 4
5
IC17E
1 3
6
IC17F
1 2
7
IC17G
1 1
8
IC17H
abcd
B '
C '
D '
E '
R1 30
R2 30
R3 30
R4 30
R5 30
bcde a
A '
/S3 /S4 /S5 /S6
/S3 /S4 /S5 /S6
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Sharp ER-A220 Specifications

General

Brand	Sharp
Model	ER-A220
Category	Cash Register
Language	English