Read Sharp AR-280 (serv.man18) Service Manual online
1
2
3
4
5
6
7
8
D
C
B
A
D
C
B
A
1
2
3
4
5
6
7
8
1/2
PCU
PWB
1
2
3
4
5
6
1
2
3
4
5
6
7
8
9
2
3
4
5
6
7
8
9
10
ORS
PD
PDSEL0
PDSEL1
PDSEL2
+5V1
PD
GND2
DSWF
DL
PDSEL0
PDSEL1
PDSEL2
+5V1
PD
GND2
/DL
+24V(DL)
+24V(DL)
DSWF
+24V2
+24V2
1
2
3
4
5
6
7
8
9
2
3
4
5
6
7
8
9
10
11
11
/SM0
/SM1
/SM2
/SM3
VH(MirM)
/SM1
/SM2
/SM3
VH(MirM)
VH(M
VH(MirM)
VH(MirM)
MHPS
MHPS
GND2
+5V1
GND2
+5V1
ORS
LED
OCSW
1
2
3
2
3
3
2
1
+24V1
/LED0
/LED1
/LED0
/LED1
+5V1
GND2
OCSW
GND2
OCSW
1
2
3
2
3
1
2
3
2
3
+24V1
/CL
GND1
/CL
GND1
CL
INV
MM
4
3
2
3
2
1
2
3
4
2
3
4
+5V1
GND2
/MM
MM-T
GND2
/MM
MM-T
TM
1
2
2
1
2
3
4
5
6
7
8
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
2
3
4
5
6
7
8
/PCLED
PCS
/DMLED
DMS
PCS
/DMLED
DMS
F-GND
1
2
3
4
5
6
7
8
9
10
11
12
TCS
VAREF
+5V1
GND2
GND2
MPFS
+24V1
MPED
MPWS
MPLD1
MPLD2
MPLD1
MPLD2
MPLS1
MPLS2
MPLS2
+24V1
DVCH1
TCS
GND2
+24V1
GND2
+24V1
GND2
1
2
3
2
3
1
2
3
4
5
6
7
2
3
4
5
6
7
1
2
3
4
5
6
7
2
3
4
5
6
7
DVCH1
GND2
TCS
GND2
+24V1
TCS
GND2
+24V1
Bias
2
3
4
3
4
DSWF
Bias
MSS
MPWS
MPLS1
MPLS2
MPED
MPLD1
MPLD2
MPFS
MSS
IDPWB
DMPWB
F-GND
ICU
+24V1
+5V1
GND1
GND2
GND2
1
2
3
4
1
2
3
4
+24V1
TXD-ADF
F-GND
RXD-ADF
+5V1
/DSR-ADF
RES-ADF
GND2
TXD-ADF
F-GND
RXD-ADF
+5V1
/DSR-ADF
RES-ADF
GND2
/DTR-ADF
3
4
5
6
7
8
9
4
5
6
7
8
9
10
11
11
3
4
5
6
7
8
9
4
5
6
7
8
9
10
11
12
11
12
12
GND1
F-GND
F-GND
ADF
1
2
3
4
5
6
7
8
2
3
4
5
6
7
8
F-GND
1
2
3
5
7
9
2
3
5
7
9
11
13
15
13
15
F-GND
/PCLED
PCS
/DMLED
DMS
+12V1
PCS
/DMLED
DMS
+12V1
1
2
3
4
5
2
3
4
5
F-GND
GND2
CTS-RIC
/DSR-RIC
/RXD-RIC
TXD-RIC
+5V1
/DTR-RIC
/RTS-RIC
GND2
CTS-RIC
/DSR-RIC
/RXD-RIC
TXD-RIC
+5V1
/DTR-RIC
/RTS-RIC
1
1
Bias
GND2
MPLS1
MPLS1
GND2
MPLS2
MPLS2
GND2
+5V1
MPED
MPED
+5V1
GND2
+5V1
GND2
MPLD2
MPLD2
MPFS
+24V1
MSS
+24V1
+24V1
1
2
2
1
2
2
2
1
1
2
1
1
2
1
1
2
1
1
2
1
2
3
2
3
1
2
3
2
3
1
2
3
4
5
6
7
8
9
2
3
4
5
6
7
8
9
10
11
12
11
12
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
2
3
4
5
6
7
8
9
10
11
12
11
12
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
9
10
11
GND2
9
10
11
12
13
11
12
13
PWB
1
2
3
4
5
6
7
8
9
2
3
4
5
6
7
8
9
10
11
12
11
12
1
2
3
4
5
6
7
8
9
2
3
4
5
6
7
8
9
13
13
13
1
2
3
2
3
TMS
GND2
GND2
TMS
GND2
GND2
8
9
9
10
11
12
11
12
8
9
9
10
11
12
11
12
9
8
7
6
5
4
3
8
7
6
5
4
3
9
8
7
6
5
4
3
1
2
2
1
QR/P8-12S-2C
QR/P8-8S-2C
1
2
3
4
5
6
7
8
9
1
2
2
2
1
12
13
13
10
11
12
13
14
11
12
13
14
10
11
12
13
14
+24V2
B13B-PH-K-S
15
16
15
16
16
/SPF SCAN
1
2
3
4
5
6
2
3
4
5
6
/MODE1
/NODE2
/MODE4
/MODE5
/SCLK
/CWB
SMRST
/SMRET
/SMEN
/SCLKin
/NODE2
/MODE4
/MODE5
/SCLK
/CWB
SMRST
/SMRET
/SMEN
/SCLKin
14
B6B-PH-K-S
B13B-PH-K-S
B3B-XA
A
B
A
B
1
2
3
4
5
7
8
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
+5
VL
D
VL
D
+
3
8
V
IC
U
+2
4V
1 I
C
4V
1 I
C
U
GND1
I
C
U
GND1
I
C
U
+1
2V
1 I
C
2V
1 I
C
U
+
5
V
1
IC
U
+
5
V
1
IC
U
+
5
V
1
IC
U
+
3
.3
V
IC
U
U
+
3
.3
V
IC
U
U
-5
V
I
C
C
U
GND2
I
C
U
GND2
I
C
U
GND2
I
C
U
GND2
I
C
U
+
5
V
1
IC
U
S
+
3
.3
V
IC
U
U
S
+
3
.3
V
IC
U
U
S
+
5
V
1
IC
U
S
+
5
V
1
IC
U
S
GND2
I
CUS
GND2
I
CUS
GND2
I
CUS
GND2
I
CUS
GND2
I
CUS
+1
2V
1 H
2V
1 H
D
I
GND1
HDI
+5
V1
HDI
V1
HDI
GND2
HDI
14
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
27
28
29
30
31
32
33
34
DVCH1
GND2
TCS
GND2
+24V1
TMS
GND2
TCS
GND2
+24V1
TMS
GND2
/PCLED
PCS
/DMLED
DMS
+12V1
PCS
/DMLED
DMS
+12V1
+5V1
GND2
/MM
MM-T
GND2
/MM
MM-T
TXD-ADF
RXD-ADF
/DTR-ADF
RXD-ADF
/DTR-ADF
(NC)
RES-LCC
/DTR-LCC
TXD-LCC
/DSR-LCC
1
2
3
2
3
1
2
3
2
3
3
4
5
4
5
5
4
3
TMS
GND2
GND2
+24V2
DSWF
DSWF(L)
DSWF(L)
DSWL
PDSEL0
PDSEL1
PDSEL2
+5V1
PD
GND2
/DL
+24V(DL)
+24V1
+24V(DL)
+24V1
GND1
+24V1
/CL
GND1
/CL
GND1
/LED0
/LED1
/LED1
+24V1
+5V1
GND2
OCSW
GND2
OCSW
MHPS
GND2
+5V1
GND2
+5V1
+5V1
GND2
VAREF
MPWS
MPLD1
MPLD2
MPED
MPLS1
MPLS2
MPFS
MSS
+24V1
GND2
VAREF
MPWS
MPLD1
MPLD2
MPED
MPLS1
MPLS2
MPFS
MSS
+24V1
/SCLK
SMRST
/SMRET
/SMEN
/SCLKin
/SMRET
/SMEN
/SCLKin
/CWB
1
2
2
1
2
2
GND2
VARE
F
MPW
S
MPL
D
1
MPL
D
2
MPL
S
1
+5
V1
V1
8
7
6
5
4
3
2
1
1
2
3
4
5
6
7
8
1
2
2
2
1
1
/DL
+24V1
+24V1
F-GND
1
3
3
5
6
7
8
9
6
7
8
9
10
11
11
6
+24V2
DSWF
11
1
2
4
3
3
5
7
9
DSWF(L)
DSWL
KRWH-22-M B
KRWH-22-M A
11
10
10
9
8
7
6
5
4
3
2
1
8
7
6
5
4
3
2
1
+24V1
1
2
3
4
5
6
7
8
9
2
3
4
5
6
7
8
9
10
11
12
11
12
MPL
S
2
1
2
2
3
2
2
VAREF
MPWS
MPWS
MPLD1
GND2
TCS
TCS
1
3
2
1
2
1
3
2
1
2
1
+12V1
+12V1
/PCLED
PCS
PCS
/DMLED
DMS
DMS
/DSR-ADF
RES-ADF
RES-ADF
RXD-LCC
RES-LCC
/DTR-LCC
TXD-LCC
/DSR-LCC
RXD-LCC
+5V1
GND2
GND2
+24V1
GND1
GND1
DH-L
DH-N
DH-N
F-GND
1
2
9
2
9
10
8
11
3
4
5
6
7
4
5
6
7
GP1A22LC
8
7
6
5
4
7
6
5
4
13
12
11
10
12
11
10
9
8
7
6
5
4
3
2
1
8
7
6
5
4
3
2
1
+24V1
(NC)
(NC)
GND2
PCU CLK/
PCU TXD/
PCU RXD/
PCU RDY/
PCU LRQ/
SCAN/
LD START/
PCU RES
PCU CLK/
PCU TXD/
PCU RXD/
PCU RDY/
PCU LRQ/
SCAN/
LD START/
PCU RES
FW
F RES
F RES
PCU CLK/
PCU TXD/
PCU RXD/
PCU RDY/
PCU LRQ/
SCAN/
LD START/
PCU RES
PCU TXD/
PCU RXD/
PCU RDY/
PCU LRQ/
SCAN/
LD START/
PCU RES
PAGE/
FW
F RES
FW
F RES
VFM3
VFM3
2
1
1
VFM3
4
8
MSW PR/
+24V1
+24V1
MSW PR/
TXD-ADF
RXD-ADF
/DTR-ADF
/DSR-ADF
RES-ADF
(NC)
/SPF SCAN
+5V1
GND2
OCSW
RXD-ADF
/DTR-ADF
/DSR-ADF
RES-ADF
(NC)
/SPF SCAN
+5V1
GND2
OCSW
+24V1
/LED0
/LED1
/LED0
/LED1
+24V1
/CL
GND1
/CL
GND1
1
2
3
4
5
6
7
8
9
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
11
12
13
14
15
16
1
2
3
2
3
DVCH2
DVCH3
DVCH4
DVCH3
DVCH4
DVCH2
DVCH3
DVCH4
DVCH3
DVCH4
10
11
12
10
11
12
11
12
+12V1
ScannerM
SM
16
15
14
13
12
11
10
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
8
7
6
5
4
3
2
1
SMP-03V-NC
DF1B-3EP-2.5RC(BL)
MSW
1
2
3
4
5
6
2
3
4
5
6
+38V(MM)
GND1(MM)
+5V1
GND2
/MM
MM-T
GND1(MM)
+5V1
GND2
/MM
MM-T
1
2
3
4
+12V1
+12V1
+12V1
+12V1
+12V1
+12V1
+12V1
CN1
B24B-KRWHK
B24B-KRWHK
CN3
CN2
B26B-KRWHK
B26B-KRWHK
CN4
CN5
B32B-KRWHK
B32B-KRWHK
GND2
CTS-RIC
DSR-RIC
RXD-RIC
TXD-RIC
+5V1
DTR-RIC
RTS-RIC
GND2
TXD-PRT
RXD-PRT
RTS-PRT
CTS-PRT
POFB
CTS-RIC
DSR-RIC
RXD-RIC
TXD-RIC
+5V1
DTR-RIC
RTS-RIC
GND2
TXD-PRT
RXD-PRT
RTS-PRT
CTS-PRT
POFB
/P
R
R
T
-R
E
E
S
/A
2
2
-R
E
S
TXD-PRT
GND2
RXD-PRT
RTS-PRT
CTS-PRT
RTS-PRT
CTS-PRT
POFB
+24V1
2
12
3
1
PAGE/
F RES
FW
PAGE/
3
1
4
1
2
3
4
2
3
4
3
2
1
2
1
1
2
3
2
3
MHPS
GND2
+5V1
GND2
+5V1
RD
RD
RD
PL
RD
RD
PL
GY
BL
GY
LB
LB
GY
BL
GY
LB
LB
GY
LB
LB
LB
LB
LB
LB
LB
LB
LB
GY
LB
LB
LB
RD
RD
LB
LB
RD
RD
RD
RD
RD
RD
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
PL
GY
BL
GY
BL
LB
LB
LB
LB
LB
LB
LB
LB
GY
GY
RD
BL
GY
GY
RD
BL
BL
GY
GY
GY
GY
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
BL
B20B-KRWHK
2
2
/SPF SCAN
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
RD
RD
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
RD
GY
GY
GY
RD
BL
GY
OR
GY
BL
GY
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
1
2
3
4
4
5
6
1
2
2
3
4
+5V1
+5V1
+5V1
+5V1
+5V1
+5V1
+5V1
GND2
GND2
GND2
GND2
GND2
GND2
GND2
GND2
GND2
GND2
GND2
1
2
2
3
4
4
5
6
6
1
2
3
3
4
+24V1
+24V1
+24V1
+24V1
+24V1
+24V1
+24V1
+5V1
+5V1
+5V1
GND2
GND2
GND2
LB
LB
LB
LB
LB
LB
A
B
A
B
1
5
6
7
8
9
5
6
7
8
9
10
11
12
13
14
15
16
18
19
20
21
22
11
12
13
14
15
16
18
19
20
21
22
+5VLD
GND2
GND2
+5V1
-5V
B1
B2
B3
B4
SYNC/
VIDEO
VIDEO/
LDON/
GND2
START/
READY/
+24V1
GND1
GND2
GND2
+5V1
-5V
B1
B2
B3
B4
SYNC/
VIDEO
VIDEO/
LDON/
GND2
START/
READY/
+24V1
GND1
+5VLD
GND2
GND2
+5V1
-5V
B1
B2
B3
B4
SYNC/
VIDEO
VIDEO/
LDON/
GND2
GND2
+5V1
-5V
B1
B2
B3
B4
SYNC/
VIDEO
VIDEO/
LDON/
GND2
START/
READY/
+24V1
GND1
START/
READY/
+24V1
GND1
1
4
4
10
9
11
8
7
6
5
3
7
6
5
3
12
13
14
13
14
1
3
2
5
4
3
2
5
4
1
3
2
5
4
3
2
5
4
CN3
CN4
DF1B-22DP-2.5DS
CN7
/MODE1
/NODE2
/MODE4
/MODE5
/NODE2
/MODE4
/MODE5
TM1A
TM1B
TM1B
TM1A
TM1B
TM1B
TM1A
TM1B
TM1B
TM1A
TM1B
TM1B
1
2
3
2
3
+24V1
MSW PR/
CN1
CN2
CN3
CN1
/PFM
/SVREF1
/SVREF2
/SVREF3
/SVREF2
/SVREF3
/SVREF1
/SVREF2
/SVREF3
/SVREF2
/SVREF3
+1
2V
1 0
2V
1 0
P
LB
LB
LB
LB
+2
4V
3 O
4V
3 O
P
3
3
1
5
+38V MM
GND2 MM
+5V1 MM
GND2 MM
+5V1 MM
RI
C
C
LC
C
C
LS
U
U
22
30
28
1
25
23
21
9
6
7
5
19
17
15
+5V1 SM
+5V1 ADF
+5V1 LCC
-5V LSU
+5V1 ICU
+5V1 ICU
+5V1 ICU
+3.3V ICU
+3.3V ICU
+3.3V ICUS
+3.3V ICUS
+5V1 ICUS
+5V1 ICUS
+5V1 ICUS
34
29
30
29
30
18
17
17
15
16
3
1
1
31
24
20
7
19
5
8
GND1 MM
+38V SM
GND1 SM
+38V SM
GND1 SM
GND1 ADF
+24V1 ADF
+24V1 ADF
+24V1 LCC
GND1 LCC
+12V1 ICU
+12V1 OP
+12V1 OP
+38V2 OP
GND1 ICU
GND1 ICU
+24V3 OP
+24V1 ICU
+12V1 HDI
GND1 HDI
4
2
13
11
11
9
7
7
23
21
19
17
15
25
21
19
17
15
25
GND2 LCC
GND2 ADF
GND2 ICU
GND2 ICU
GND2 ICU
GND2 ICU
GND2 ICU
GND2 ICUS
GND2 ICUS
GND2 ICUS
GND2 ICUS
GND2 ICUS
GND2 HDI
GND2 ICUS
GND2 ICUS
GND2 ICUS
GND2 ICUS
GND2 HDI
13 +5V1 HDI
CN703
(26Pin)
DC
P/S
DC
P/
S
S
+5VLD
/PRT-RES
/A2-RES
(2-2A)
(2-2A)
(2-2A)
(2-3A)
A
B
B28B-KRWHK
S22B-PHDSS
Bias
(2-4C)
(2-2A)
(2-2A)
(2-2A)
(2-2A)
(2-2A)
(2-2A)
(2-2A)
(2-2A)
(2-2A)
(2-2A)
(2-2A)
(2-5A)
(2-5A)
+38V MM
(2-3A)
CN704 (34Pin)
CN702 (30Pin)
1
2
2
3
4
+12V1 HDI
GND1 HDI
GND1 HDI
GND2 HDI
+5V1 HDI
HDD
1
3
3
5
4
1
3
4
5
3
4
5
S14B-PH-K-S
GY
OR
RD
RD
GY
GY
PL
OR
OR
GY
RD
GY
RD
GY
PL
GY
OR
RD
RD
GY
GY
PL
OR
OR
GY
RD
GY
RD
GY
PL
GY
BL
BL
BL
BL
OR
OR
OR
OR
BL
BL
BL
BL
BL
BL
BL
BL
BL
BL
OR
OR
OR
OR
BL
BL
BL
BL
BL
BL
BL
BL
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
ADF
ADF
ADF
ADF
ADF
ADF
ADF
LCC
LCC
LCC
LCC
LCC
LCC
PL
PL
GY
BL
GY
GY
BL
BL
PL
BR
LB
PK
BR
LB
PL
PK
GY
PL
OR
RD
GY
GY
GY
BL
BL
PL
BR
LB
PK
BR
LB
PL
PK
GY
PL
OR
RD
GY
PK
LB
PL
BR
PK
LB
PL
BR
PK
LB
BL
GY
BR
RD
LB
GY
RD
PK
LB
BL
GY
BR
RD
LB
GY
RD
PK
LB
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
LB
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
RD
GY
LB
BL
PL
BR
PK
LB
RD
LB
BL
PL
BR
PK
LB
RD
LB
PL
OR
PL
OR
BR
PK
OR
PK
OR
LB
BR
PL
LB
OR
BR
PL
LB
OR
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
GY
LB
LB
LB
LB
LB
LB
MSW PR/
RD
RD
RD
LB
RD
RD
LB
(AR-335)
1
2
9
2
9
10
8
11
12
12
3
4
5
6
7
4
5
6
7
RD
GY
GY
LB
LB
LB
LB
LB
LB
LB
LB
LB
LB
(NC)
(NC)
(NC)
(NC)
(NC)
3
2
2
6
7
7
PTH
PTH
GND2
GND2
1
3
3
PTH
GND2
GND2
LB
GY
GY
PTH
GND2
GND2
GND2
PTH
(2-6A)
+24V1
/PFM
GND1
/PFM
GND1
(2-6A)
(2-6A)
(2-6A)
22
17
15
13
14
8
9
9
10
7
5
4
3
2
1
6
6
11
18
19
20
21
16
12
GY
BL
OR
OR
BL
BL
BL
PL
OR
GY
GY
RD
RD
OR
BL
GY
GY
GY
GY
PL
BL
(NC)
(NC)
(NC)
335-C03.DSF
WIRING CHART
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