AR-285 (serv.man21). AR280 285 335 Circuit Operation Control PWB — Sharp Copying Equipment Service Manual (repair manual)

Model
AR-285 (serv.man21)
Pages
6
Size
252.56 KB
Type
PDF
Document
Service Manual
Brand
Device
Copying Equipment / AR280 285 335 Circuit Operation Control PWB
File
ar-285-sm21.pdf
Date

View Sharp AR-285 (serv.man21) Service Manual online

CIRCUIT DIAGRAM
Digital Copier
MODEL
 AR-280/285/335
SHARP CORPORATION
Parts marked with "
" is important for maintaining the safety of the set. Be sure to replace these parts with specified
ones for maintaining the safety and performance of the set.
[ 1 ] PWB Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1
[ 2 ] Wiring Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  2
[ 3 ] ICU PWB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  13
[ 4 ] PCU PWB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  43
[ 5 ] Operation control PWB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  55
[ 6 ] Operation L / R PWB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  65
[ 7 ] AC / DC power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  67
[ 8 ] AC PWB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  71
[ 9 ] DC power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  75
CONTENTS
1
2
3
4
5
6
7
8
D
C
B
A
D
C
B
A
1
2
3
4
5
6
7
8
C256
22pF
C264
22pF
R223
910J
R230
150J
C245
2200pF
C242
2200pF
IC10B
74LV14NS
3
4
IC10A
74LV14NS
1
2
IC10F
74LV14NS
13
12
IC10E
74LV14NS
11
10
IC9B
74LV04NS
3
4
IC13A
74VHCT04SJ
1
2
R244
620KJ
R233
2.2KJ
IC13D
74VHCT04SJ
9
8
IC13B
74VHCT04SJ
3
4
R226
30KJ
1
8
2
7
3
6
1
8
2
7
3
6
4
5
4
5
3
6
2
7
1
8
1
8
2
7
3
6
4
5
IC13F
74VHCT04SJ
13
12
R231
7.5KJ
C236
0.01uF
3
6
2
7
4
5
3
6
2
7
1
8
1
8
3
6
IC9A
74LV04NS
1
2
X2
9.8304MHz
1
8
1
8
2
7
3
6
4
5
3
6
2
7
4
5
3
6
2
7
4
5
2
7
3
6
4
5
4
5
3
6
2
7
1
8
2
7
3
6
2
7
3
6
4
5
1
8
1
8
4
5
3
6
1
8
2
7
4
5
2
7
4
5
2
7
1
8
3
6
4
5
1
8
3
6
2
7
3
6
2
7
1
8
R243
10KJ
C247
1000pF
4
5
C269
10000pF
R245
10KJ
C271
2200pF
C272
22000pF
4
5
4
5
3
6
1
8
2
7
1
8
1
8
2
7
3
6
R246
1.2KJ
C270
1000pF
C244
C241
1000pF
C239
C243
C248
22000pF
IC10C
74LV14NS
5
6
4
5
IC12B
74VHCT04SJ
3
4
IC12C
74VHCT04SJ
5
6
IC12A
74VHCT04SJ
1
2
R252
10KJ
R249
150J
C237
C238
C240
4
5
R250
10KJ
R281
12KF
IC14
M54587FP
NC
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
GND
10
COM
20
19
19
18
18
17
17
16
16
15
15
14
14
13
13
12
12
VCC
11
R232
10KJ
IC11B
LM339NS
5
4
2
3
12
+
-
IC13C
74VHCT04SJ
5
6
C257
22000pF
IC7A
74F32SJ
1
2
3
IC7B
74F32SJ
4
5
6
C220
22000pF
C249
22000pF
C235
22000pF
IC12D
74VHCT04SJ
9
8
14
7
R248
10KJ
R247
10KJ
IC11C
LM339NS
9
8
14
+
-
R251
10KJ
R229
10KJ
IC11A
LM339NS
7
6
1
+
-
C268
10000pF
Q212
UPA502T
3
4
2
1
5
Q209
UPA502T
3
4
2
1
5
C258
22000pF
IC13E
74VHCT04SJ
11
10
14
7
1
8
D224
DAN202K
D209
DAN202K
D223
DAP202K
D210
DAP202K
4
5
D225
DAP202K
D226
DAN202K
D208
DAP202K
Q210
DTA114YKA
3
1
2
IC9C
74LV04NS
5
6
R280
10KJ
D205
DAN202K
C19
22uF/10V
+
D211
DAN202K
1
8
D206
HZU5.1B1
C250
22000pF
C260
22000pF
C265
22000pF
R228
10KJ
C210
22000pF
IC205A
LM358PS
3
2
1
8
4
+
-
Q211
DTC114YKA
3
1
2
IC10D
74LV14NS
9
8
Q213
IMH9A
1
6
5
2
4
3
Q214
IMB9A
4
3
5
1
6
2
IC15
H8/3003
VCC
1
TIOCA3
2
PB1
3
PB2
4
PB3
5
PB4
6
PB5
7
PB6
8
PB7
9
VSS
10
PC0
11
PC1
12
CS4
13
CS5
14
CS6
15
PC5
16
PC6
17
PC7
18
RESO
19
TXD0
20
TXD1
21
RXD0
22
RXD1
23
SCK0
24
SCK1
25
VSS
26
D0
27
D1
28
D2
29
D3
30
D4
31
D5
32
D6
33
D7
34
VSS
35
D8
36
D9
37
D1
0
38
D1
1
39
D1
2
40
D1
3
41
D1
4
42
D1
5
43
VCC
44
A0
45
A1
46
A2
47
A3
48
A4
49
A5
50
A6
51
A7
52
VSS
53
A8
54
A9
55
A1
0
56
A11
57
A12
58
A13
59
A14
60
A15
61
A16
62
A17
63
A18
64
A19
65
WAIT
66
P61
67
P62
68
SCLK
69
STBY
70
RES
71
NMI
72
VSS
73
EXTAL
74
XTAL
75
VCC
76
AS
77
RD
78
HWR
79
LWR
80
MD0
81
MD1
82
MD2
83
AVCC
84
VREF
85
AN0
86
AN1
87
AN2
88
AN3
89
P7
4
90
P7
5
91
P7
6
92
P7
7
93
AVS
S
94
A2
0
95
A2
1
96
A2
2
97
A2
3
98
VSS
99
IR
Q
0
10
0
IR
Q
1
10
1
IR
Q
2
10
2
CS1
10
3
CS0
10
4
TP0
10
5
TP1
10
6
TP2
10
7
TP3
10
8
TP4
10
9
TP5
11
0
TP6
11
1
TP7
11
2
R292
12KF
R1
47J 1/2W
D8
D9
D10
D11
D13
D15
D[8:15]
A4
A14
A13
A9
A19
A16
A10
A3
A12
A1
A11
A5
A17
A6
A[0:20]
A0
A15
A2
A18
A8
A7
D0
D7
D5
D4
D[0:7]
D1
D6
D3
D2
D12
D14
+5V
VREF
AVCC
AVCC
VREF
+5V
+5V
+5V
+5V
+5V
+5V
VREF
+5V
+5V
+5V
+5V
+24V1
+12V
+5V
+5V
+5V
+5V
+5V
+5V
+12V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
+12V
A[0:20]
D[0:7]
D[8:15]
LWR\
HWR\
RD\
ROM-CS\
WAIT\
RAM-CS\
IO-CS\
LCDC-CE2\
LCDC-CE1\
OP-RES\
OP-RES\\
OCSW\
TH
PD
XL\
YL\
XH
OP-POF
READY\
AUD\
PNC-a\
KEYIN\
EX-DSR\
EX-RXD\
OP-TXD\
OP-CLK\
OP-RES
OP-RES\\\
OP-LRQ\
OP-RDY\
OP-RXD\
EX-DTR\
EX-TXD
DATA
EX-CLK\\
EX-CLK\\
YH
 RY/BY\
LATCH
VDD-ON
COPY\
CA\
PNC\
TC\
F0\
F1\
F2\
F3\
ICUFM\
F7\
F4\
SWon
Yon
Xon
A20
OP-POF\
A20
OP-POF\
SWon
Xon
Yon
OP-RES\
(HD6413003TF)
(1/4W)
BR224
BR226
1.2K*3
2.2K*3
BR226
1.2K*1
BR248
1.2K*4
CN105-9
CN204-11
CN103-7
CN203-2
CN203-3
CN203-4
CN203-1
CN101-9
CN104-4
CN104-5
CN104-12
1000pF*3
CN103-5
CN103-8
CN103-3
CN103-6
CN103-1
CN103-2
CN103-4
CN104-2
CN104-3
CN104-1
CN104-10
CN101-6
CN101-7
CN101-2
BR225
2.2K*3
CN204-9
CN205-7
CN205-6
CN101-3
CN101-4
CN101-8
CN205-2
CN204-7
CN205-8
CN205-5
CN204-8
BR247
10K*4
10K*4
10K*4
10K*4
10K*4
10K*4
10K*4
BR233
BR232
BR228
BR235
BR234
BR229
BR231
BR237
BR236
BR230
10K*4
10K*4
10K*4
10K*4
100pF*3
BR249
10K*4
BR250
10K*4
BR238
10K*4
BR240
68K*4
(5-6A)
(5-4B)
(5-6B)
(5-4B)
(5-4B)
(5-4B)
(5-4B)
(1-4C)
(1-4C)
(1-4C)
(2-5D)
(3-8C)
(1-4C)
(1-5D)
(1-2B)
(3-8A)
(2-7C)
(3-8A)
(2-7B)
(3-8B)
(3-8B,2-6B,2-7B,2-8C)
(2-7C,2-6B,3-8B)
(5-6C)
(5-6B)
(5-6B)
(5-6B)
(1-7B)
(2-8C)
(2-7B)
(1-6A,2-8C)
(1-7A)
(1-7A)
(1-7A)
(2-4C)
(5-6C)
(5-6C)
(5-6B)
(5-6C)
(5-6B)
(5-6B)
(5-6C)
(5-6B)
(5-6B)
(5-6B)
(5-6B)
(4-7C)
(2-6B)
(3-8B)
(3-8B)
(5-4B)
(5-4A)
(5-4A)
(5-6D)
(5-6D)
(5-6C)
(1-7B)
(3-8A)
(5-4B)
(5-6C)
(5-6C)
(5-6D)
(5-4A)
(5-4A)
(5-4B)
(5-4B)
(5-4A)
CN205-4
(2-6C)
(2-5D)
(2-5D)
(3-8D)
(3-8D)
14
 7
 
K
 
K
 A1  A2  A1  A2
 K1  K2  K1  K2
 
A
 
A
 K
 K
 A
 A
 K1  K2
 K1  K2
 A1
 A2
 A1
 A2
 A1  A2
 K
BR225
2.2K*1
BR227
1.2K*1
BR224
2.2K*1
BR227
1.2K*3
1/5
335-C29.DSF
[5] OP CONTROL PWB
(3-N1258FC)
: Not mounted
1
2
3
4
5
6
7
8
D
C
B
A
D
C
B
A
1
2
3
4
5
6
7
8
C266
22000pF
R237
20KJ
R256
20KJ
R257
2.7KJ
R263
20KJ
C15
0.33uF/50V
+
R267
2.7KJ
C18
0.33uF/50V
+
C14
22uF/10V
+
C16
47uF/10V
+
C13
100uF/10V
+
C254
0.1uF
C261
0.1uF
R260
12KJ
R261
12KJ
R278
10J
R269
750J
C17
10uF/16V
+
C251
47000pF
Q217
2SB1197K
R255
2.7KJ
Q216
2SB1197K
C267
22000pF
D218
DAN202K
D220
DAN202K
1
8
2
7
2
7
1
8
2
7
3
6
3
6
2
7
4
5
3
6
4
5
4
5
R279
20KJ
1
8
3
6
4
5
C262
0.47uF
1
8
R271
0J
R275
2.7KJ
R273
300J
R274
5.6KJ
R277
1.2KJ
R272
150J
R276
620J
D214
DAN202K
D215
DAN202K
R258
2.7KJ
1
8
2
7
3
6
4
5
1
8
3
6
2
7
4
5
2
7
4
5
1
8
3
6
Q225
UPA502T
3
4
2
1
5
D213
DAP202K
D212
DAP202K
D222
DAP202K
R265
12KJ
C255
390pF
IC207A
LM358PS
3
2
1
8
4
+
-
IC207B
LM358PS
5
6
7
+
-
D217
DAP202K
Q223
UPA502T
3
4
2
1
5
D216
DAP202K
Q222
UPA502T
3
4
2
1
5
D219
DAN202K
R235
20KJ
D221-2
DAP202K
D221-1
DAP202K
Q227
UPA502T
3
4
2
1
5
IC208
NJM386M
GAIN
1
-IN
2
+IN
3
GND
4
OUT
5
V+
6
BYPS
7
GAIN
8
R270
1MJ
R254
2.7KJ
Q226
UPA502T
3
4
2
1
5
Q228
UPA502T
3
4
2
1
5
Q220
DTC114YKA 3
1
2
Q219
DTC114YKA
3
1
2
R253
2.7KJ
Q218
DTC114YKA
3
1
2
Q215
2SB1197K
R236
20KJ
R234
20KJ
R259
10KJ
R264
1.2KJ
Q221
2SD1625
Q224
2SD1625
IC17
IS61C256AH-15J
A0
10
A1
9
A2
8
A3
7
A4
6
A5
5
A6
4
A7
3
A8
25
A9
24
A10
21
A11
23
A12
2
A13
26
A14
1
OE
22
CE
20
WE
27
D1
11
D2
12
D3
13
D4
15
D5
16
D6
17
D7
18
D8
19
VCC
28
GND
14
DIMM1
FLASH SOK
A0
12
A1
13
A2
14
A3
15
A4
16
A5
17
A6
18
A7
28
A8
31
A9
32
A11
33
A12
34
A10
29
A13
36
A14
65
A15
66
A16
67
A17
68
A18
69
A19
70
A20
71
3/5
11
RP
19
1CE 1L
40
1CE 1H
41
2CE 1L
42
2CE 1H
43
OE
44
RY/BY
45
WP
46
WE
47
BYTE
48
D0
2
D1
3
D2
4
D3
5
D4
6
D5
7
D6
8
D7
9
D8
21
D9
22
D10
23
D11
24
D12
25
D13
26
D14
27
D15
35
D16
37
D17
38
D18
49
D19
50
D20
51
D21
52
D22
53
D23
54
D24
56
D25
57
D26
58
D27
60
D28
59
D29
62
D30
63
D31
64
Vcc1
10
Vcc1
30
Vcc2
61
Vss1
1
Vss1
20
Vss2
72
VPP
55
Vss1
39
R238
10KJ
C263
22000pF
IC16
IS61C256AH-15J
A0
10
A1
9
A2
8
A3
7
A4
6
A5
5
A6
4
A7
3
A8
25
A9
24
A10
21
A11
23
A12
2
A13
26
A14
1
OE
22
CE
20
WE
27
D1
11
D2
12
D3
13
D4
15
D5
16
D6
17
D7
18
D8
19
VCC
28
GND
14
R268
2.7KJ
C246
22000pF
C252
10000pF
R290
0J
IC18
MSM82C55A-2GS-2K
D0
32
D1
31
D2
30
D3
29
D4
28
D5
27
D6
26
D7
25
A1
3
A0
4
RESET
33
CS
1
WR
34
RD
44
VDD
39
NC
12
NC
22
VDD
24
VDD
17
GND
2
PA0
43
PA1
42
PA2
41
PA3
40
PA4
38
PA5
37
PA6
36
PA7
35
PB0
14
PB1
15
PB2
16
PB3
18
PB4
19
PB5
20
PB6
21
PB7
23
PC0
9
PC1
10
PC2
11
PC3
13
PC4
8
PC5
7
PC6
6
PC7
5
C274
22000pF
2
7
3
6
4
5
1
8
1
8
4
5
3
6
2
7
IC19
74HCT244NS
2A1
11
2A2
13
2A3
15
2A4
17
1A4
8
1A3
6
1A2
4
1A1
2
1G
1
2G
19
2Y1
9
2Y2
7
2Y3
5
2Y4
3
1Y4
12
1Y3
14
1Y2
16
1Y1
18
VCC
20
GND
10
GND
D4
D0
A2
A9
D3
A9
A4
A8
A8
A3
D7
A2
D6
A4
A2
A3
A7
A9
A5
A6
A4
A5
A16
D1
A7
A6
D2
D5
A20
A3
A6
A5
A8
A7
A14
A14
A12
A10
A10
A10
A12
A13
A13
A12
A13
A14
A17
A19
A18
D[0:7]
D1
D5
D6
D2
D4
D7
D3
D0
A11
A[0:20]
A11
A15
A15
A11
A15
D9
D8
IOD14
D9
D8
A0
A1
D14
D11
A1
D15
A1
IOD12
D10
D13
IOD9
D10
D14
IOD11
D15
D12
IOD10
D13
IOD13
A0
D12
IOD8
IOD15
D11
A1
D[8:15]
D8
D9
D10
D11
D12
D13
D14
D15
IOD8
IOD9
IOD10
IOD11
IOD12
IOD13
IOD14
IOD15
IOD[8:15]
+5V
+5V
+5V
+5V
+24V1
+5V
+5V
+12V
+12V
+5V
+5V
+5V
+5V
+5V
+5V
ROM-CS\
RD\
WR\
RY/BY\
HWR\
LWR\
RD\
RAM-CS\
OP-RES\\
IO-CS\
HWR\
RD\
D[8:15]
D[0:7]
A[0:20]
BE0\
PDSEL0\
PDSEL2\
LATCH\
PDSEL1\
LED0\
LED1\
LATCH
SEG0
SEG1
SEG2
ROM-RES\
BZR\
SOUND
IO-CS\
OP CONTROL PWB (3-N1258FC)
RAM 1
RAM 2
10K*4
BR243
10K*4
BR245
20K*4
BR244
20K*4
BR246
BR242
BR241
68K*4
68K*4
CN103-9
CN103-10
CN103-11
CN204-5
BR239
68K*4
(1-4C)
(1-6C)
(3-7B)
(1-6C)
(1-7B)
(1-6C)
(1-6C)
(1-4C)
(1-2A)
(1-2C)
(1-6C)
(1-6C)
(1-6A)
(1-5A)
(1-5A)
(1-4C)
CN105-3
CN105-2
CN105-1
CN204-6
(5-6B)
(5-6B)
(5-6B)
(5-4B)
CN105-11
CN105-12
(5-6A)
(5-6A)
(5-6B)
(5-6B)
(5-6B)
(5-4B)
(4-8B)
 SOUND-ON
VR16
VR15
VR14
VR13
VR12
VR11
K
K
A2
A1
A2
A1
K2
K1
K2
K1
A
A
K
A1
A2
K1
K2
A
K2
A
K1
A
1
 3
 2
1
 2
 3
1
 2
 3
1
 2
 3
1
 2
 3
K
K
A1
A1
A2
A2
K1
K1
K2
K2
A
A
(4-6B)
(4-8A)
(1-2C)
BR251
10K*4
BR252
10K*4
2/5
335-C30.DSF
: Not mounted
1
2
3
4
5
6
7
8
D
C
B
A
D
C
B
A
1
2
3
4
5
6
7
8
C202
22000pF
IC8C
74LVC08NS
9
10
8
2
7
1
8
3
6
IC5A
74LVC04NS
1
2
1
8
R204
150KF
IC9F
74LV04NS
13
12
2
7
C208
22000pF
R205
75KF
3
6
2
7
1
8
1
8
2
7
IC201
LM317MDT
VIN
3
ADJ
1
VOUT
2
3
6
2
7
R206
36KF
4
5
2
7
1
8
1
8
4
5
C206
22000pF
4
5
3
6
C227
1
8
C228
C201
22000pF
C3
2.2uF/50V
+
C229
C213
22000pF
R209
47KJ
IC5E
74LVC04NS
11
10
2
7
4
5
1
8
C224
C226
4
5
4
5
3
6
C223
C222
IC5C
74LVC04NS
5
6
C215
22000pF
3
6
3
6
2
7
C6
10uF/35V
+
D204
RLS-73
R203
300KF
3
6
4
5
1
8
3
6
4
5
1
8
4
5
2
7
1
8
2
7
3
6
4
5
4
5
3
6
2
7
1
8
C225
1
8
2
7
3
6
4
5
1
8
2
7
3
6
4
5
3
6
2
7
1
8
3
6
2
7
4
5
R217
30KJ
R218
10KJ
R210
47KJ
R201
6.2KF
2
7
1
8
2
7
3
6
1
8
2
7
4
5
4
5
1
8
4
5
1
8
2
7
4
5
3
6
3
6
3
6
4
5
4
5
3
6
1
8
2
7
2
7
1
8
3
6
IC9E
74LV04NS
11
10
R222
47KJ
R202
560KF
R216
330KJ
X1
10.752MHz
1
3
2
R207
18KF
R224
1MJ
Q201
2SB1198K
Q202
2SD1782K
D201
RLS-73
R208
300F
4
5
IC2
IDT74FCT163244CPA
1A1
47
1Y1
2
1A2
46
1Y2
3
1A3
44
1Y3
5
1A4
43
1Y4
6
1A5
41
1Y5
8
1A6
40
1Y6
9
1A7
38
1Y7
11
1A8
37
1Y8
12
2A1
36
2Y1
13
2A2
35
2Y2
14
2A3
33
2Y3
16
2A4
32
2Y4
17
2A5
30
2Y5
19
2A6
29
2Y6
20
2A7
27
2Y7
22
2A8
26
2Y8
23
1G
1
4G
24
3G
25
2G
48
VCC
7
VCC
18
VCC
31
VCC
42
GND
4
GND
10
GND
15
GND
21
GND
28
GND
34
GND
39
GND
45
IC4
74HCT244NS
1A1
2
1Y1
18
1A2
4
1Y2
16
1A3
6
1Y3
14
1A4
8
1Y4
12
2A1
11
2Y1
9
2A2
13
2Y2
7
2A3
15
2Y3
5
2A4
17
2Y4
3
1G
1
2G
19
VCC
20
GND
10
IC6D
74LVC32NS
12
13
11
IC6C
74LVC32NS
9
10
8
C233
22000pF
IC7D
74F32SJ
12
13
11
14
7
IC5B
74LVC04NS
3
4
14
7
C219
22000pF
C218
22000pF
C232
22000pF
IC8D
74LVC08NS
12
13
11
14
7
Q208
UPA502T
3
4
2
1
5
Q207
UPA502T
3
4
2
1
5
Q206
UPA502T
3
4
2
1
5
1
8
2
7
C209
22000pF
2
7
3
6
3
6
2
7
4
5
1
8
3
6
1
8
4
5
3
6
4
5
4
5
2
7
IC8A
74LVC08NS
1
2
3
IC3
IDT74FCT164245TPA
1A1
47
1B1
2
1A2
46
1B2
3
1A3
44
1B3
5
1A4
43
1B4
6
1A5
41
1B5
8
1A6
40
1B6
9
1A7
38
1B7
11
1A8
37
1B8
12
2A1
36
2B1
13
2A2
35
2B2
14
2A3
33
2B3
16
2A4
32
2B4
17
2A5
30
2B5
19
2A6
29
2B6
20
2A7
27
2B7
22
2A8
26
2B8
23
1G
48
2G
25
1DIR
1
2DIR
24
VCC1
7
VCC1
18
VCC2
31
VCC2
42
GND1
4
GND1
10
GND1
15
GND1
21
GND2
28
GND2
34
GND2
39
GND2
45
IC5F
74LVC04NS
13
12
1
8
IC6B
74LVC32NS
4
5
6
IC5D
74LVC04NS
9
8
R221
47KJ
C216
22000pF
C214
22000pF
C217
22000pF
C211
22000pF
C8
22uF/10V
+
C212
22000pF
IC8B
74LVC08NS
4
5
6
IC7C
74F32SJ
9
10
8
C4
10uF/35V
+
IC6A
74LVC32NS
1
2
3
IC203
M5M5256CVP-10VXL
A0
10
A1
9
A2
8
A3
7
A4
6
A5
5
A6
4
A7
3
A8
25
A9
24
A10
21
A11
23
A12
2
A13
26
A14
1
OE
22
CE
20
WE
27
D1
11
D2
12
D3
13
D4
15
D5
16
D6
17
D7
18
D8
19
VCC
28
GND
14
IC204
M5M5256CVP-10VXL
A0
10
A1
9
A2
8
A3
7
A4
6
A5
5
A6
4
A7
3
A8
25
A9
24
A10
21
A11
23
A12
2
A13
26
A14
1
OE
22
CE
20
WE
27
D1
11
D2
12
D3
13
D4
15
D5
16
D6
17
D7
18
D8
19
VCC
28
GND
14
IC1
SC908SF2V
DI
S
1
FRM
2
YD
3
LP
4
XCK
5
VR1
6
VR2
7
VR3
8
VR4
9
VR5
10
VR6
11
STB
12
VCC
13
XC2
14
XC1
15
GND
16
BUSY
17
CONTRL
1
18
RESE
T
19
CONTRL
2
20
UBE
21
IO
R
D
22
IO
W
R
23
MRD
24
MWR
25
CE2
26
CE1
27
A15
28
A14
29
A13
30
A12
31
A11
32
A10
33
A9
34
A8
35
A7
36
A6
37
A5
38
A4
39
A3
40
A2
41
A1
42
A0
43
GND
44
VCC
45
D15
46
D14
47
D13
48
D12
49
D11
50
D1
0
51
D9
52
D8
53
D7
54
D6
55
D5
56
D4
57
D3
58
D2
59
D1
60
D0
61
GND
62
VCC
63
LR
/W
64
LC
E
65
LD
7
66
LD
6
67
LD
5
68
LD
4
69
LD
3
70
LD
2
71
LD
1
72
LD
0
73
AX0
74
AX1
75
AX2
76
AX3
77
AX4
78
AX5
79
AX6
80
BUFENB
81
AY0
82
AY1
83
AY2
84
AY3
85
AY4
86
AY5
87
AY6
88
AY7
89
AY8
90
VCC
91
GND
92
SD0
93
SD1
94
SD2
95
SD3
96
SD4
97
SD5
98
SD6
99
SD7
100
A9
A2
LD1
AX5
AX5
A7
A4
LD3
LD6
LD7
A13
A6
AX6
A11
A3
LD2
AX3
LD5
AX4
AX6
A0
A8
AX0
A14
LD4
AX3
A5
A1
A10
LD0
AX2
AX1
A[0:15]
AX1
A15
AX0
AX2
AX4
A12
LD
0
LD
3
LD[0:7]
LD
1
LD
5
LD
2
LD
7
LD
6
LD
4
AX2
AX6
AX4
AX5
AX3
AX0
AX1
AX[0:6]
LD2
LD6
LD3
LD5
LD7
LD4
LD1
LD0
D0
D1
D4
D5
D7
D2
D6
D3
D[0:7]
D12
D8
D13
D14
D[8:15]
D15
D11
D10
D9
AY5
AY0
AY0
AY6
AY7
AY1
AY[0:8]
AY2
AY3
AY4
AY4
AY7
AY2
AY4
AY6
AY1
AY0
AY6
AY3
AY8
AY5
AY2
AY5
AY1
AY3
AY7
+3.3V
+3.3V
+3.3V
+3.3V
+5VLCD
+3.3V
+38V
+3.3V
+3.3V
+5V
+5V
+3.3V
+3.3V
+3.3V
+3.3V
+5V
+3.3V
+3.3V
LCDC-CE1\
LCDC-CE2\
HWR\
LWR\
VEE-ON
OP-RES\
WAIT\
WR\
BK-ON
VEE-ON\
D1
D2
D3
M
S
CP1
D0
CP2
DIS\\
LCD-VEE
D[0:7]
D[8:15]
RD\
A[0:15]
AY8
AY8
OP CONTROL PWB (3-N1258FC)
BR223
47*4
BR212
10K*4
BR206
BR214
BR211
10K*4
BR216
BR217
BR220
330K*4
BR221
BR205
BR215
BR222
10K*4
10K*4
10K*4
10K*4
330K*4
47*4
10K*4
10K*4
FB201
FB202
100pF*8
BR218
BR219
10K*4
10K*4
BR213
10K*3
BR207
10K*4
68K*4
BR201
330K*4
BR210
BR203
BR209
BR204
330K*4
330K*4
330K*4
BR208
BR202
68K*4
68K*4
CN201-12
CN201-5
(1-5A)
(1-5A)
(1-6A)
(1-2C)
(1-2C)
(1-6C)
(1-6C)
(1-6C)
(1-2B)
(1-7B)
(4-2C)
(2-8C)
(5-4C)
(5-4C)
(4-7C)
(4-2C)
(5-4C)
(5-4C)
(5-4C)
(5-4C)
(5-4C)
(5-4C)
(5-4C)
(5-4C)
CN201-4
CN201-7
CN201-2
CN201-9
CN201-6
CN201-1
CN201-8
CN201-3
(3-4D)
(3-3D)
1
 2
3
1
 2
 3
14
7
BR213
10K*1
3/5
335-C31.DSF
Page of 6
Display

Download Sharp AR-285 (serv.man21) Service Manual (Repair Manual)

Here you can view online or download Sharp AR-285 (serv.man21) Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sharp AR-285 (serv.man21) Copying Equipment. Information contained in Sharp AR-285 (serv.man21) service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).