DOWNLOAD Sharp ER-A280 / ER-A280N / ER-A280F (serv.man5) Service Manual ↓ Size: 5.62 MB | Pages: 56 in PDF or view online for FREE

Model
ER-A280 ER-A280N ER-A280F (serv.man5)
Pages
56
Size
5.62 MB
Type
PDF
Document
Service Manual
Brand
Device
ECR / ER-A280 Service Manual
File
er-a280-er-a280n-er-a280f-sm5.pdf
Date
PREV: Sharp ER-A280 / ER-A280N / ER-A280F (serv.man4) Service Manual

Sharp ER-A280 / ER-A280N / ER-A280F (serv.man5) Service Manual ▷ View 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
ER-A280F/A280N (V)
CIRCUIT DIAGRAM & PWB LAYOUT
8 – 12
■ 
PO
WER (FOR LOGIC)
12/12
C
D
B
A
C
D
B
A
876
5
4
321
8
76
5
4
321
VCC5
24V
VLED
VCC3
3.6VB
VCC3
3.6VB
VCC3
VDD3
VBAT1
[1]
BAT_AD
[1]
VBAT2
[1]
3.3V Battery BackUpped
5.0V
Littel 372
VBAT1 = max 3.00v  ( at  Li-ION =8.4v)
             =   th   2.140v  ( at  Li-ION =6.0v)
3.3V
R245
10K
CN16
5267-02A(BLUE)
1
1
2
2
R238
10K/F
C183
1000pF
C183
1000pF
R234
24.3k/F
C179
0.33uF
C179
0.33uF
R243
4.7K
R229
00
Q23
2SK3541
Q23
2SK3541
D
G
S
C181
0.33uF
C181
0.33uF
C186
220pF
C186
220pF
C172
1uF
Q21
2SA1036K
C
E
B
D29
1SS3551SS355
A
C
D32
1SS355
A
C
R237
68
ZD4
PTZ6.2B
A
C
ZD5
PTZ4.3B
A
C
Q22
2SK3541
D
G
S
IC23
BA33DD0WHFP
CTRL
1
VCC
2
GND
3
VOUT
4
NC
5
TAB
6
C169
4.7uF/50V 
CERAMIC
IC22
SC4525A
SW
1
VIN
2
ROSC
3
GND
4
SS/EN
5
COMP
6
FB
7
BST
8
R231
(NU)
C170
0.33uF
+
C165
330uF/10V SKV(8x10.5),470uF/ 
16V MVL(10x10.3)
+
1
2
R244
(1M)
R244
(1M)
RB060L-40
D35
RB520G-30
A
C
D34
A
C
C184
1000pF
C184
1000pF
C166
(NU)
C177
0.001uF
R235
3K/F
F8
T1.6A/250V SEMKO
D33
RSX501LA-20
D33
RSX501LA-20
A
C
R236
22
R242
10K
R248
1ohm
R248
1ohm
D31
RSX501LA-20
A
C
IC25
XC6108C30BMR
IC25
XC6108C30BMR
3
VIN
VSS
2
VOUT
1
CD
5
VSEN
4
TP155
R241
10K/F
R233
18.2k
C164
0.1uF
R232
10K
R232
10K
TP86
C178
0.1uF
+
C180
47uF/6.3V SKV(5x5.5)/MVL(5x5.7)
+
C180
47uF/6.3V SKV(5x5.5)/MVL(5x5.7)
1
2
R247
100K
R247
100K
C182
0.1uF
C182
0.1uF
R246
1M
R246
1M
C176
22uF/10V 
CERAMIC
C175
10pF
+
C173
(10uF/10V, OS SVP(4.0x5.4))
+
1
2
R240
10
+
C171
+
47uF/6.3V SKV(5x5.5)/MVL(5x5.7)
1
2
R228
(NU)
IC24
R1154H028B-T1-F
IC24
R1154H028B-T1-F
1
VOUT
GND
2
CE
3
NC
4
VDD
5
L6
5.2uH (DR74-5R2)
D30
RB060L40
D30
A
C
R239
47K
R230
12K/F
C174
0.010uF
TP154
+
C168
220uF/35V SKV(10x10.5)/
MVL(10x10)
+
1
2
ER-A280F/A280N (V)
CIRCUIT DIAGRAM & PWB LAYOUT
8 – 13
■ 
MAIN PWB I/F & KEYBO
ARD I/F
1/5
C
D
B
A
C
D
B
A
876
5
4
321
8
76
5
4
321
KS1
KS3
KS0
KS2
KS1
KS3
KS0
KS2
KR0
KR7
KR6
KR5
KR4
KR3
KR2
KR1
v5p_STB3#
v5p_STB2#
CHK_KEY
v5p_STB1#
v5p_STB1
1#
a
b
c
d
e
f
g
dp
v5p_STB4#
v5p_STB6#
v5p_STB5#
v5p_STB7#
v5p_STB8#
v5p_STB9#
v5p_STB10#
KR7
KR6
KR5
KR4
CHK_REAR
KR0
KR3
KR2
KR1
CHK_KEY
CHK_KEY
VLED
VLED
VLED
a
b
c
d
e
f
g
dp
v5p_STB1#
v5p_STB2#
v5p_STB3#
v5p_STB4#
v5p_STB5#
v5p_STB6#
v5p_STB7#
v5p_STB8#
v5p_STB9#
v5p_STB10#
v5p_STB1
1#
a
b
c
d
e
f
g
dp
CHK_REAR
from MAIN-PWB
   3.3v
   signal
from MAIN-PWB
 RearDisplay i/f
 & KeyBoard i/f
rŒ i–ˆ™‹
|•›
5.7v ~ 5.0v
signal
RECEIPT
MISSING-HOLE
GUIDE HOLE 3.5MM
HOLE 3.5MM
SENSOR
GUIDE HOLE 2.0MM
1-2 PIN SHORT :
Only Normal Keyboard
HOLE 1.8MM
MSP2MSP2
A
C
D5
1SS355
D5
1SS355
MT8MT8
MSS10MSS10
3 
2 
1
4
5 
6 
7 
8
RP2
10K_x4
+-5%
RP2
10K_x4
+-5%
MH3MH3
MSS23MSS23
F8
T1.6A/250V SEMKO
F8
T1.6A/250V SEMKO
3 
2 
1
4
5 
6 
7 
8
RP5
47K_x4
+-5%
RP5
47K_x4
+-5%
3 
2 
1
4
5 
6 
7 
8
RP3
10K_x4
+-5%
RP3
10K_x4
+-5%
A
C
D4
1SS355
D4
1SS355
A
C
D23
(1SS355)
D23
(1SS355)
MT9MT9
MH1MH1
MSS29MSS29
A
C
D7
1SS355
D7
1SS355
MSN5MSN5
MT2MT2
MH2MH2
MSS22MSS22
A
1
B
2
C
3
G1
6
G2A
4
G2B
5
Y0
15
Y1
14
Y2
13
Y3
12
Y4
11
Y5
10
Y6
9
Y7
7
VCC_5
16
GND
8
IC1
SN74HCT138PW
IC1
SN74HCT138PW
MSS7MSS7
A
C
D6
1SS355
D6
1SS355
A
C
D22
1SS355
D22
1SS355
1
2
+
C1
100uF/16V SKV(6.3x5.5)
+
C1
100uF/16V SKV(6.3x5.5)
MSS14MSS14
MT4MT4
C4
100pF
C4
100pF
MH5MH5
MSP5MSP5
MSS27MSS27
MT7MT7
A
C
D9
1SS355
D9
1SS355
MSS13MSS13
MSS6MSS6
MSS8MSS8
1
TP1
TEST
 POINT
TP1
TEST
 POINT
MSS26MSS26
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
CN2
00 6208 526 310 000+
CN2
00 6208 526 310 000+
A
C
D8
1SS355
D8
1SS355
MSS1
1
MSS1
1
MSP1MSP1
GND2GND2
3 
2 
1
4
5 
6 
7 
8
RP4
47K_x4
+-5%
RP4
47K_x4
+-5%
MSN4MSN4
1
2
3
4
5
6
7
8
9
10
11
12
13
CN1
5229-13CPB(MOLEX)
CN1
5229-13CPB(MOLEX)
R16
0
R16
0
MSS30MSS30
A
C
D10
1SS355
D10
1SS355
A
1
B
2
C
3
G1
6
G2A
4
G2B
5
Y0
15
Y1
14
Y2
13
Y3
12
Y4
11
Y5
10
Y6
9
Y7
7
VCC_5
16
GND
8
IC2
SN74HCT138PW
IC2
SN74HCT138PW
MSS12MSS12
MSS9MSS9
MSP4MSP4
MSS3MSS3
3 
2 
1
4
5 
6 
7 
8
RP1
10K_x4
+-5%
RP1
10K_x4
+-5%
MSN1MSN1
C3
0.1uF
C3
0.1uF
MSS28MSS28
MSS24MSS24
C2
0.1uF
C2
0.1uF
MT5MT5
MSN3MSN3
MSS25MSS25
MSS5MSS5
MSS17MSS17
MSS2MSS2
A
C
D1
1SS355
D1
1SS355
GND3GND3
MT6MT6
MSN2MSN2
MT3MT3
MSS20MSS20
MT1MT1
GND1GND1
MSP3MSP3
MT1
1
MT1
1
MSS1MSS1
MSS21MSS21
1
2
3
4
5
6
7
8
9
10
11
CN3
5229-1
1CPB(MOLEX)
CN3
5229-1
1CPB(MOLEX)
MSS19MSS19
MSS15MSS15
A
C
D2
1SS355
D2
1SS355
MSS4MSS4
MT10MT10
MH4MH4
MSS18MSS18
2.
SUB PW
B
ER-A280F/A280N (V)
CIRCUIT DIAGRAM & PWB LAYOUT
8 – 14
■ 
REAR DISPLA
Y I/F
2/5
C
D
B
A
C
D
B
A
876
5
4
321
8
76
5
4
321
G4
G3
G5
G2
G6
G8
G10
G9
G1
G2
G3
G6
G4
G5
G9
G7
G8
G10
B#
DP#
D#
G#
C#
F#
E#
G1
B#
DP#
D#
A#
G#
C#
F#
E#
A#
G7
G7
G8
G9
G10
CHK_REAR
G1
G2
G3
G4
G5
G6
A#
B#
C#
D#
E#
F#
G#
DP#
VLED
VLED
v5p_STB1#
v5p_STB2#
v5p_STB3#
v5p_STB4#
v5p_STB5#
v5p_STB6#
v5p_STB7#
v5p_STB8#
v5p_STB9#
v5p_STB10#
c
d
e
f
g
dp
CHK_REAR
a
b
to Pop-Up RearDisplay 
max 1.2A/Line
5.7v ~ 5.0v
signal
VLED = 5.0V
1.2A/each pin
max 0.2A/Line
from MAIN-PWB
  3.3v -5.0v
  signal OK
P-ch.FET
N-ch.FET
POP-UP
 REAR
DISPLAY
 (LED)
Vf 2.0v(Typ.)
   2.9v(Max)
Id 30mA*8seg
   *10digit
max 0.2A/Line
SAME AS
ER-A277P
2009,4,4
R10
23R7/F [1/2W 5025]
R10
23R7/F [1/2W 5025]
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
CN4
52610-2071
CN4
52610-2071
R4
23R7/F [1/2W 5025]
R4
23R7/F [1/2W 5025]
R6
23R7/F [1/2W 5025]
R6
23R7/F [1/2W 5025]
1D
6
1S
5
2D
4
1G
1
2S
2
2G
3
QS6K1
Q9
QS6K1
Q9
R9
23R7/F [1/2W 5025]
R9
23R7/F [1/2W 5025]
1D
6
1S
5
2D
4
1G
1
2S
2
2G
3
QS6J1
Q3
QS6J1
Q3
1D
6
1S
5
2D
4
1G
1
2S
2
2G
3
QS6J1
Q1
QS6J1
Q1
1D
6
1S
5
2D
4
1G
1
2S
2
2G
3
QS6J1
Q4
QS6J1
Q4
1D
6
1S
5
2D
4
1G
1
2S
2
2G
3
QS6J1
Q2
QS6J1
Q2
R3
23R7/F [1/2W 5025]
R3
23R7/F [1/2W 5025]
1D
6
1S
5
2D
4
1G
1
2S
2
2G
3
QS6J1
Q5
QS6J1
Q5
1D
6
1S
5
2D
4
1G
1
2S
2
2G
3
QS6K1
Q7
QS6K1
Q7
R5
23R7/F [1/2W 5025]
R5
23R7/F [1/2W 5025]
R7
23R7/F [1/2W 5025]
R7
23R7/F [1/2W 5025]
R8
23R7/F [1/2W 5025]
R8
23R7/F [1/2W 5025]
1D
6
1S
5
2D
4
1G
1
2S
2
2G
3
QS6K1
Q6
QS6K1
Q6
1D
6
1S
5
2D
4
1G
1
2S
2
2G
3
QS6K1
Q8
QS6K1
Q8
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