Read Sharp ER-A280 / ER-A280N / ER-A280F (serv.man5) Service Manual online
ER-A280F/A280N (V)
CIRCUIT DIAGRAM & PWB LAYOUT
8 – 11
■
PO
WER (SOURCE)
11/12
C
D
B
A
C
D
B
A
876
5
4
321
8
76
5
4
321
VP
24V
VCC5
VCC3
24V
POFF#
[1,10]
with FUSE
24V
with Heat Sink
with FUSE
8.5V
VCC5(5V) -> 4.3V
DIP TYPE phai25
DIP TYPE phai12.5
24V(24V) -> 18.5V
with Heat Sink
Littel 372
Littel 372
R249
(10K)
R222
2.7K
R227
100K
R220
2.7K
R223
10K/F
NC pin
1,2,7,8,9,10,
11,13,15,16
IC20
LM2574DW-ADJR2G
NC pin
1,2,7,8,9,10,
11,13,15,16
3
12
14
5
6
4
D26
SPB-G56S
A
NC
C
D24
RB060L40
A
C
ZD2
PTZ10B
A
C
L5
68uH TROIDAL
C159
0.1uF
TP83
R216
FUSE R 10ohm
C157
0.1uF/100V
R217
2.2K/F
TP81
Q19
KTD998
B
E
C
CN15
VH-2A
1
1
2
2
R219
2.7K
+
C156
+
C156
1000uF/35V YXA(12.5x20)/KMG(12.5x20)
1
2
+
C158A
+
CAP-D10/1000UF/
16V (*DIP)
1
2
R226
6.2K/F
F6
T2.5A/250V SEMKO
F6
T2.5A/250V SEMKO
-
+
D25
DS3BA60
-
+
2
1
3
4
D28
SPB-G56S
A
NC
C
R224
100K
R215
13K/F
R221
10K/F
C160
0.1uF/100V
R218
5.6K [1/2W]
+
C155
5600uF/50V MXC(25x40)
+
1
2
C162
0.1uF
R212
FUSE R 10ohm
R214
5.6K [1/2W]
C161
0.1uF
R250
(10K)
D27
RB060L40
A
C
C154
MYLOR
0.033uF
MYLOR
0.033uF
F7
T2.5A/250V SEMKO
+
-
IC21A
BA10393
+
-
3
2
1
8
4
+
C158
+
470uF/16V SKV(10x10.5)/
MVL(10x10) (*1000uF/16V YXA)
1
2
ZD3
UDZS4.3B
A
C
NC pin
1,2,7,8,9,10,
11,13,15,16
IC19
LM2574DW-ADJR2G
NC pin
1,2,7,8,9,10,
11,13,15,16
3
12
14
5
6
4
L4
180uH TROIDAL
+
-
IC21B
BA10393
+
-
5
6
7
8
4
R213
1.2K/F
Q20
KTD998
B
E
C
R211
22K/F
C163
1000pF
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