Read Sharp ER-A280 / ER-A280N / ER-A280F (serv.man5) Service Manual online
ER-A280F/A280N (V)
CIRCUIT DIAGRAM & PWB LAYOUT
8 – 18
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C
D
B
A
C
D
B
A
876
5
4
321
8
76
5
4
321
G7
G8
G9
CHK_REAR
G1
G3
G4
G5
G6
CHK_RETURN
A#
B#
A#
B#
G6
G5
G2
G1
G#
F#
E#
D#
C#
D#
E#
F#
G#
DP#
G10
G2
DP#
G9
G10
G4
G3
G7
G8
C#
CHK_RETURN
CHK_REAR
A#
A#
G4
G4
G2
G2
A#
A#
F#
F#
G3
G3
E#
E#
D#
D#
DP#
DP#
G3
G3
G2
G2
DP#
DP#
D#
D#
G1
G1
G5
G5
G5
G5
D#
D#
F#
F#
GNEQ
%QPVCEVNQYGTOQNGZ
%QPVCEVWRRGT
MHH6
1
2
3
4
5
6
7
8
9
10
11
12
13
14
18
15
16
17
20
19
CN1
00 6232 020 104 800 (1mmPitch)00 6232 020 104 800 (1mmPitch)
MJ8
JP
MHH13
MSN3
MJ2
JPJP
MHH12
MHH11
MJ10
JPJP
MJ18
JPJP
MJ11
JP
MHH29
MJ1
JP
MSN6
MHH38
MSS1
7
6
4
1
3
8
9
2
10
5
5
10
89
3
2
1
4
4
6
7
7
ab
c
de
f
dp
g
g
7
9
8
8
3
2
1
4
4
6
DIG1
DIG2
LED3
KD4022-S2
5
10
89
3
2
1
4
4
6
7
7
ab
c
de
f
dp
g
g
7
9
8
8
3
2
1
4
4
6
DIG1
DIG2
LED3
KD4022-S2
MSN5
7
6
4
1
3
8
9
2
10
5
5
10
89
3
2
1
4
4
6
7
7
ab
c
de
f
dp
g
g
7
9
8
8
3
2
1
4
4
6
DIG1
DIG2
LED5
KD4022-S2
5
10
89
3
2
1
4
4
6
7
7
ab
c
de
f
dp
g
g
7
9
8
8
3
2
1
4
4
6
DIG1
DIG2
LED5
KD4022-S2
MSN4
M1
MSS4
MJ12
JP
MJ23
JPJP
7
6
4
1
3
8
9
2
10
5
5
10
89
3
2
1
4
4
6
7
7
ab
c
de
f
dp
g
g
7
9
8
8
3
2
1
4
4
6
DIG1
DIG2
LED1
KD4022-S2
5
10
89
3
2
1
4
4
6
7
7
ab
c
de
f
dp
g
g
7
9
8
8
3
2
1
4
4
6
DIG1
DIG2
LED1
KD4022-S2
MJ22
JPJP
MSS3
MJ3
JP
MHH22
MSS2
MJ13
JP
MJ4
JP
MJ6
JP
MHH32
MJ5
JP
MHH5
7
6
4
1
3
8
9
2
10
5
5
10
89
3
2
1
4
4
6
7
7
ab
c
de
f
dp
g
g
7
9
8
8
3
2
1
4
4
6
DIG1
DIG2
LED2
KD4022-S2
5
10
89
3
2
1
4
4
6
7
7
ab
c
de
f
dp
g
g
7
9
8
8
3
2
1
4
4
6
DIG1
DIG2
LED2
KD4022-S2
MJ24
JP
MHH1
MH1
MHH4
MH4
MJ7
JP
MHH19
MHH10
MHH3
MH3
MHH16
MHH9
MHH2
MH2
MJ21
JP
MJ9
JP
7
6
4
1
3
8
9
2
10
5
5
10
89
3
2
1
4
4
6
7
7
ab
c
de
f
dp
g
g
7
9
8
8
3
2
1
4
4
6
DIG1
DIG2
LED4
KD4022-S2
5
10
89
3
2
1
4
4
6
7
7
ab
c
de
f
dp
g
g
7
9
8
8
3
2
1
4
4
6
DIG1
DIG2
LED4
KD4022-S2
MHH15
MHH8
R1
0
R1
0
MHH25
MHH14
MHH7
MHH35
3.
REAR DISPLA
Y PWB
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