Sharp AR-235 (serv.man5) Service Manual ▷ View online
AR-235/275 CIRCUIT DIAGRAM - 27
to
key_pwb1
to
key_pwb2
to
fax_key_pwb
to
mcu_pwb
LED1
TRAYPAPER
FAXOPD
/FAXSW
LED1
SCAN9
/LEDOUT1
SCAN4
SCAN7
/LEDOUT5
/LEDOUT6
/START
/LEDOUT1
SCAN6
/LEDOUT6
SCAN6
LED5
SENSE1
SCAN8
/LEDOUT2
/LEDOUT7
LED6
/LEDOUT3
SCAN8
LED3
/LEDOUT3
/LEDOUT2
SENSE2
SCAN5
/LEDOUT2
SENSE1
SENSE0
LED3
SENSE2
SCAN5
LED2
SENSE3
/LEDOUT4
/LEDOUT1
SENSE0
LED2
LED5
/LEDOUT5
/LEDOUT3
/LEDOUT5
LED6
/LEDOUT7
LED4
SENSE3
SCAN7
/LEDOUT4
SCAN4
SCAN3
LED4
/LEDOUT4
LED2
TRAYPAPER
1
8
2
7
3
6
4
5
1
8
2
7
3
6
4
5
1
8
2
7
3
6
4
5
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
21
2
1
2
1
2
1
21
2
1
2
1
2
3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1A1
2
1A2
4
1A3
6
1A4
8
2A1
11
2A2
13
2A3
15
2A4
17
1G
1
2G
19
1Y1
18
1Y2
16
1Y3
14
1Y4
12
2Y1
9
2Y2
7
2Y3
5
2Y4
3
12
12
1C
16
1B
1
2C
15
3C
14
2B
2
4C
13
5C
12
3B
3
6C
11
7C
10
4B
4
5B
5
6B
6
7B
7
COM
9
12
12
12
12
12
12
12
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
1A1
2
1A2
4
1A3
6
1A4
8
2A1
11
2A2
13
2A3
15
2A4
17
1G
1
2G
19
1Y1
18
1Y2
16
1Y3
14
1Y4
12
2Y1
9
2Y2
7
2Y3
5
2Y4
3
12
12
I1
1
O8
11
I2
2
O7
12
I3
3
O6
13
I4
4
O5
14
I5
5
O4
15
I6
6
O3
16
I7
7
O2
17
I8
8
O1
18
1
2
3
12
R-EXT
15
SERIAL-IN
2
LATCH
4
ENABLE
13
OUT0
5
CLOCK
3
OUT1
6
OUT2
7
OUT3
8
OUT4
9
OUT5
10
OUT6
11
OUT7
12
SERIAL-OUT
14
12
12
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
1
8
2
7
3
6
4
5
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
R73
470
R58
10k
BR24
10kX4
BR22
10kX4
BR23
10kX4
BLG1
LT1ZE40A
BLY1
LT1ZV40A
R83
1.1k(1/4W)
R84
1.1k(1/4W)
R85
1.1k(1/4W)
R87
1.1k(1/4W)
R86
1.1k(1/4W)
R89
1.5k(1/4W)
R90
2.4k(1/4W)
R88
1.1k(1/4W)
BLG13
LT1ZE40A
BLG2
LT1ZE40A
BLY2
LT1ZV40A
BLG8
LT1ZE40A
BLG14
LT1ZE40A
BLG3
LT1ZE40A
BLY3
LT1ZV40A
BLG9
LT1ZE40A
BLG15
LT1ZE40A
BLG4
LT1ZE40A
BLY4
LT1ZV40A
BLG10
LT1ZE40A
BLG16
LT1ZE40A
BLG5
LT1ZE40A
BLY5
LT1ZV40A
BLG11
LT1ZE40A
BLG17
LT1ZE40A
BLG6
LT1ZE40A
BLY6
LT1ZV40A
BLG12
LT1ZE40A
BLG18
LT1ZE40A
R60
1.1k(1/4W)
R61
1.1k(1/4W)
R62
1.1k(1/4W)
R64
1.1k(1/4W)
R63
1.1k(1/4W)
R69
1.5k(1/4W)
R65
1.1k(1/4W)
BLY14
LT1ZV40A
R94
2.4k(1/4W)
BLY9
LT1ZV40A
BLY16
LT1ZV40A
R70
2.4k(1/4W)
BLY7
LT1ZV40A
BLY11
LT1ZV40A
BLY18
LT1ZV40A
R92
2.4k(1/4W)
R71
1.5k(1/4W)
BLY13
LT1ZV40A
BLY15
LT1ZV40A
R72
2.4k(1/4W)
BLY8
LT1ZV40A
BLY17
LT1ZV40A
R93
1.5k(1/4W)
BLY10
LT1ZV40A
BLY12
LT1ZV40A
R91
1.5k(1/4W)
BLG7
LT1ZE40A
R67
1.5k(1/4W)
R68
2.4k(1/4W)
Q2
DTC114EKA
R98
470
CN4
16FMN-STK
IC6
74HCT244
C52
0.1u
R57
84
R95
84
C50
0.1u
IC10
ULN2003A
R46
84
R48
84
R55
84
R47
84
R52
84
C49
47uF/35V
+
C45
0.1u
R56
84
R49
84
C43
0.1u
C47
47uF/16V
+
CN3
15FMN-STK
C46
0.1u
IC9
74HCT244
R54
84
R51
84
IC7
TD62785
CN5
S3B-PH-K-S
R96
84
IC8
TB62705CF
R59
470
C48
47uF/16V
+
C51
0.1u
R50
84
R53
84
C44
0.1u
CN2
25FMN-STK
R104
0
R103
0
R102
0
0
BR25
10kX4
(NP)
C70
1000p(NP)
C69
1000p(NP)
C67
1000p(NP)
C68
1000p(NP)
CN1
16FMN-SMT-TF
C64
0.1u(NP)
VCC
VCC
+24V
+24V
VDD
VCC
VCC
VCC
VCC
VCC
VCC
VCC
+24V
/LED0
/LED1
/LED6
/LED4
/LED2
/LED5
/LED3
/LEDLATCH
LEDSI
BLY
/LEDENABLE
LEDCLK
BLG
BLO
/RESET
SCAN0
SCAN2
SENSE6
SENSE5
SENSE4
SCAN2
SCAN1
SCAN0
/FAXSW
FAXOPD
SCAN1
SCAN9
/OPUCRDY
OPUSTS
/OPUSRDY
OPUCMD
SCAN3
SCAN6
/START
SCAN4
SENSE2
SENSE3
SCAN5
SCAN8
SENSE1
SENSE0
SCAN7
SCAN3
/OPURESET
A
A
B
B
C
C
D
D
E
E
4
4
3
3
2
2
1
1
LCD BACK LIGHT PWB
3/4
AR-235/275 CIRCUIT DIAGRAM - 28
A[19..1]
A2
A4
A11
A15
A1
A8
A13
A17
A2
A15
A14
A14
A7
A7
A7
A3
A2
A7
A9
A2
A4
A4
A8
A1
A11
A5
A6
A8
A12
A9
A9
A2
A6
A12
A10
A4
A15
A5
A6
A3
A13
A10
A10
A5
A19
A13
A1
A6
A1
A12
A15
A3
A8
A1
A11
A13
A10
A18
A11
A8
A9
A4
A14
A5
A5
A14
A6
A3
A9
A11
A14
A12
A12
A10
A15
A[19..1]
A16
A7
A3
A13
A[19..1]
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
D9
D14
D4
D13
D1
D3
D12
D10
D2
D5
D4
D12
D9
D14
D8
D7
D11
D2
D10
D1
D1
D4
D6
D7
D7
D2
D5
D15
D0
D0
D[15..0]
D8
D5
D15
D3
D0
D6
D12
D9
D10
D13
D14
D8
D9
D8
D11
D5
D15
D13
D13
D10
D6
D[15..0]
D2
D6
D11
D15
D0
D7
D11
D1
D3
D4
D14
D[15..0]
D3
D12
I/O0
11
A0
10
I/O1
12
A1
9
I/O2
13
A2
8
I/O3
15
A3
7
I/O4
16
A4
6
I/O5
17
A5
5
I/O6
18
A6
4
I/O7
19
A7
3
A8
25
A9
24
A10
21
A11
23
A12
2
A13
26
A14
1
CS
20
OE
22
WE
27
I/O0
11
A0
10
I/O1
12
A1
9
I/O2
13
A2
8
I/O3
15
A3
7
I/O4
16
A4
6
I/O5
17
A5
5
I/O6
18
A6
4
I/O7
19
A7
3
A8
25
A9
24
A10
21
A11
23
A12
2
A13
26
A14
1
CS
20
OE
22
WE
27
I/O0
11
A0
10
I/O1
12
A1
9
I/O2
13
A2
8
I/O3
15
A3
7
I/O4
16
A4
6
I/O5
17
A5
5
I/O6
18
A6
4
I/O7
19
A7
3
A8
25
A9
24
A10
21
A11
23
A12
2
A13
26
A14
1
CS
20
OE
22
WE
27
I/O0
11
A0
10
I/O1
12
A1
9
I/O2
13
A2
8
I/O3
15
A3
7
I/O4
16
A4
6
I/O5
17
A5
5
I/O6
18
A6
4
I/O7
19
A7
3
A8
25
A9
24
A10
21
A11
23
A12
2
A13
26
A14
1
CS
20
OE
22
WE
27
A0
25
A1
24
A2
23
A3
22
A4
21
A5
20
A6
19
A7
18
A8
8
A9
7
A10
6
A11
5
A12
4
A13
3
A14
2
A15
1
A16
48
A17
17
D0
29
D1
31
D2
33
D3
35
D4
38
D5
40
D6
42
D7
44
D8
30
D9
32
D10
34
D11
36
D12
39
D13
41
D14
43
D15
45
BYTE
47
RY/BY
15
NC
9
NC
10
NC
13
NC
14
A18
16
\CE
26
\OE
28
\WE
11
RESET
12
BYTE
1
A16
2
A15
3
A14
4
A13
5
A12
6
A11
7
A10
8
A9
9
A8
10
NC
11
NC
13
NC
14
A17
15
A7
16
A6
17
A5
18
A4
19
A3
20
A2
21
A1
22
A0
23
CE
24
OE
27
D0
28
D8
29
D1
30
D9
31
D2
32
D10
33
D3
34
D11
35
D4
39
D12
40
D5
41
D13
42
D6
43
D14
44
D7
45
D15/A-1
46
IC12
IS61LV256-12J
IC13
IS61LV256-12J
IC15
IS61LV256-12J
R76
0(NP)
R75
0
C62
22000p
C59
0.1u
C56
0.1u
C57
0.1u
IC16
IS61LV256-12J
C60
0.1u
C58
22u/16V
+
C63
22u/16V
+
C61
0.1u
R78
10K
R77
10k
IC14
MBM29LV400BC-70PFTN
R74
10K
R82
0
IC11
LH5JBM02
C55
0.1u
NF2
ZJSR5101-223(NP)
C73
82p
C72
82p
C71
82p
SVDD
VDD
SVDD
SVDD
VDD
SVDD
SVDD
VDD
VDD
VDD
/CS2
A[19..1]
/RD
/CS1
/HWR
/CS0
/LWR
RY/BY
D[15..0]
/CS4
A
A
B
B
C
C
D
D
E
E
4
4
3
3
2
2
1
1
LCD BACK LIGHT PWB
4/4
AR-235/275 CIRCUIT DIAGRAM - 29
LED2
LED6
SCAN1
LED2
LED1
/LEDOUT1
/LEDOUT2
/LEDOUT5
LED4
LED5
/LEDOUT1
/LEDOUT2
/LEDOUT5
LED3
/LEDOUT7
/LEDOUT6
/LEDOUT3
/LEDOUT4
/LEDOUT3
/LEDOUT4
SCAN6
/START
/START
SCAN3
SCAN8
SCAN4
SCAN5
SCAN7
SENSE0
SENSE1
SENSE0
GND
SENSE1
SCAN0
SENSE3
SENSE2
SENSE2
SENSE3
SCAN2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
12
12
c
1
d
3
Dig1
2
D.P
6
b
7
Dig2
4
f
8
Dig3
5
a
9
e
10
g
11
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
12
3
12
3
12
3
12
3
12
3
12
3
12
3
12
3
12
3
12
3
12
3
12
3
12
3
12
3
12
3
12
3
12
3
12
3
12
3
12
3
12
3
12
3
12
3
12
3
12
3
12
3
12
3
12
3
12
3
12
3
12
3
12
3
12
3
12
3
12
3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
LED4
LTL-1LHLE-002A
LED5
LTL-1LHLE-002A
LED7
LTL-1LHLE-002A
LED9
LTL-1LHLE-002A
LED11
LTL-1LHLE-002A
LED13
LTL-1LHLE-002A
LED6
LTL-1LHLE-002A
LED8
LTL-1LHLE-002A
LED10
LTL-1LHLE-002A
LED12
LTL-1LHLE-002A
LED2
LTL-1LHLE-002A
LED1
LTL-1LHLE-002A
LEDM1
LTC-3650G-01
R1
160(1/4w)
R2
160(1/4w)
CN1
25FMN-STK
KEY21
EVQ23G04K
KEY13
EVQ23G04K
KEY9
EVQ23G04K
KEY25
EVQ23G04K
KEY1
EVQ23G04K
KEY5
EVQ23G04K
KEY17
EVQ23G04K
KEY10
EVQ23G04K
KEY6
EVQ23G04K
KEY18
EVQ23G04K
KEY2
EVQ23G04K
KEY14
EVQ23G04K
KEY22
EVQ23G04K
KEY11
EVQ23G04K
KEY7
EVQ23G04K
KEY3
EVQ23G04K
KEY15
EVQ23G04K
KEY23
EVQ23G04K
KEY12
EVQ23G04K
KEY8
EVQ23G04K
KEY20
EVQ23G04K
KEY4
EVQ23G04K
KEY16
EVQ23G04K
KEY24
EVQ23G04K
KEY19
EVQ23G04K
KEY33
EVQ23G04K
KEY37
EVQ23G04K
KEY35
EVQ23G04K
KEY36
EVQ23G04K
KEY32
EVQ23G04K
KEY30
EVQ23G04K
KEY26
EVQ23G04K
KEY29
EVQ23G04K
KEY27
EVQ23G04K
KEY34
EVQ23G04K
CN2
15FMN-SMT-TF
A
A
B
B
C
C
D
D
E
E
4
4
3
3
2
2
1
1
4. KEY LED PWB
1/1
AR-235/275 CIRCUIT DIAGRAM - 30
.
1
1
2
3
4
5
6
7
8
6
7
8
1
2
3
45
6
7
8
1
2
3
4
5
6
7
8
6
7
8
1
2
3
45
6
7
8
1
2
3
4
5
6
7
8
6
7
8
1
2
3
45
6
7
8
1
2
3
45
6
7
8
1
2
3
45
6
7
8
12V
3
5V
5
PB
7
/fR
9
DATCK
11
REFCK
13
ADCK
15
/f2
17
/fROG
19
/f1
21
WRT
23
D0
25
D1
27
D2
29
D3
31
GND
4
OB
6
DUMC
8
GND
10
GND
12
GND
14
GND
16
GND
18
D3.3V
20
SD
22
SCLK
24
D7
26
D6
28
D5
30
D4
32
12V
1
GND
2
1
2
4
C122
22uF/25V
+
C124
0.1uF
C125
0.1uF
C123
0.1uF
C118
22uF/25V
+
BIS1
BIS
F1
ZJSR5101-223
C129
1000pF
R111
NC
C128
0.1uF
C126
0.1uF
BR103
1kx4
R113
NC
R115
1k
R119
1k
BR101
10x4
BR104
1kx4
R118
100
BR106
10x4
BR105
1kx4
BR108
1kx4
BR107
10x4
BR102
100x4
R117
100
C127
10pF
R116
NC
R114
NC
CN1
32PIN-FFC-CONNECTOR
IC105
NC7SZ08
A12V
A3.3V
VCC
3.3V
5V
12V
3.3V
12V
5V
A3.3V
SD
SCLK
WRT
/DATCK
/REFCK
/DUMC
OB
/f1
/fR
/f2
/fROG
/fLH
CCD-D1
CCD-D2
CCD-D7
CCD-D6
CCD-D5
CCD-D4
CCD-D0
CCD-D3
A
A
B
B
C
C
D
D
E
E
4
4
3
3
2
2
1
1
CCD PWB
5.CCD PWB
1/2
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