Sharp AL-2051, Service Manual, Page: 136 / 139

AL-2051 CIRCUIT DIAGRAM 13 - 17
DRST
DRST LCDDB5 LCDDB7 LCDDB4 LCDDB6
3.3V
5V
5V
EN
PSL PSW KEYI
N
OP-CLK OP-LA
T
C
H
OP-DA
T
A
SELI
N
1
SELI
N
2
KEYSC2 KEYSC3
LED_V
3
F-KEYI
N1
BZR KEYSC1 LCDRS LCDE SELI
N
3
LCDDB[7..4]
F-KEYI
N4
DA
T
A
1
F-KEYI
N2
LED_V
2
F-KEYI
N5
LED_V
1
F-KEYSC
2
F-KEYI
N6
F-KEYSC
3
F-KEYSC
1
F-KEYI
N7
F-KEYI
N3
LCDCONT
To MCU
PWB
T
o
D
ru
m
Initial D
etector
To FAX Key PWB
TP
4
3
TP
4
3
TP
5
1
TP
5
1
C303
47uF/16v
TP
4
2
TP
4
2
C326 0.1u
TP
5
0
TP
5
0
TP
4
1
TP
4
1
TP
4
9
TP
4
9
CN301
BM15B-GHS-T
B
T
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
TP
5
7
TP
5
7
CN302
32FMN-BMT
T
R
-A
-T
B
CN302
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 1
9
20 21 22 23 24 25 26 27 28 2
9
30 31 32
R352 Open
TP
4
8
TP
4
8
C302
47uF/16v
TP
5
6
TP
5
6
TP
4
0
TP
4
0
TP
5
2
TP
5
2
TP
3
9
TP
3
9
TP
5
4
TP
5
4
TP
4
7
TP
4
7
TP
5
5
TP
5
5
TP
3
8
TP
3
8
C324 0.1u
TP
4
6
TP
4
6
TP
5
3
TP
5
3
TP
3
7
TP
3
7
TP
4
5
TP
4
5
TP
4
4
TP
4
4
C301
47uF/16v
C325 0.1u
CN303
S3B-PH-K-S
1 2 3
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
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Connector section