Read Sharp ER-A280 / ER-A280N / ER-A280F (serv.man5) Service Manual online
ER-A280F/A280N (V)
CIRCUIT DIAGRAM & PWB LAYOUT
8 – 16
■
PRINTER I/F PWB
4/5
C
D
B
A
C
D
B
A
876
5
4
321
8
76
5
4
321
HDUP
HDUP
PE_LED
PE_LED
VH
VH
VCC3B
VCC3B
PHE_2
VSEN_2
VH = 7.5V
Max x.x
A
A
v
e 1.0
A
VH = 7.5V
Max x.x
A
A
v
e 1.0
A
PE_LED = 5.0V
Max 100mA
PE_LED = 5.0V
Max 100mA
HEAD UP SENSOR
for EPSON
GND
30
PE_LED
29
PES_1
28
PES_2
27
HDUP
26
VH
25
VH
24
DI
23
CLK
22
GND
21
GND
20
STB6
19
STB5
18
STB4
17
VDD
16
TM
15
TM
14
STB3
13
STB2
12
STB1
11
GND
10
GND
9
LA
T#
8
PR_VH
7
VH
6
VH
5
A
4
A#
3
B
2
B#
1
CN9
00 6208 530 310 000
CN9
00 6208 530 310 000
1
TP4
TEST
POINT
TP4
TEST
POINT
1
TP5
TEST
POINT
TP5
TEST
POINT
R15
120
R15
120
1
2
J1
53398-0271
J1
53398-0271
PHK_2
1
VSEN_2
2
PHE_2
3
CN8
(53398-0371)
CN8
(53398-0371)
R14
120
R14
120
PHK
1
VSEN
2
PHE
3
SW
4
SW
5
VH
6
VH
7
DI
8
CLK
9
GND
10
GND
11
STB6
12
STB5
13
STB4
14
VDD
15
TM
16
TM
17
STB3
18
STB2
19
STB1
20
GND
21
GND
22
LA
T#
23
DO
24
VH
25
VH
26
A
27
A#
28
B
29
B#
30
CN10
00 6208 530 310 000
CN10
00 6208 530 310 000
LED current limit resistor
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