Read Sharp ER-A770 (serv.man8) Service Manual online
8
7
6
5
4
3
2
1
A
B
C
D
1
2
3
4
5
6
7
8
D
C
B
A
CONNECTOR
STH2
/SHEN2
RES
/SCK2
HTS2
/RES
VCC
/RESA
RESA
SCK2A
/HTS2A
/STH2A
SHEN2A
1
2
IC40A
74LV14A
X4
FB6
BLM31
X4
FB8
FB10
FB7
3
4
IC40B
5
6
IC40C
9
8
IC40D
R7
4.7K
4.7K
FB5
BLM31
X2
13
12
IC40F
74LV14A
X2
11
10
IC40E
FB4
C50
470pF
R10
1K
OPTION DISP CN
A[0..19]
/PSREF
/PCE21_E
/PCE21_O
/PCE22_E
/PCE22_O
A14
A15
A16
A17
A18
A19
A15
A16
A17
A18
A19
A13
A12
A12
/RESA
RESA
SCK2A
/HTS2A
RESA
SCK2A
/HTS2A
/STH2A
SHEN2A
SHEN2A
+20V
1
2
3
4
5
6
7
8
9
2
3
4
5
6
7
8
9
10
CN1
53015-1010
F2A
500mA/125V
C268
10uF
50V
10uF
50V
/RDO
/WRO
/WRO
A[0..23]
A23
A22
A21
A20
A19
A18
A17
A16
A15
A14
A13
A12
A11
A10
A9
A8
A7
A6
A22
A21
A20
A19
A18
A17
A16
A15
A14
A13
A12
A11
A10
A9
A8
A7
A6
VCC
C3
47uF/25V
CHIP
01
1
02
2
03
3
04
4
05
5
06
6
07
7
08
8
09
9
10
10
11
11
12
12
13
13
14
14
15
15
16
16
17
17
18
18
19
19
20
20
21
21
22
22
23
23
24
24
25
25
26
26
27
27
28
28
29
29
30
30
31
31
32
32
33
33
34
34
35
35
36
36
37
37
38
38
39
39
40
40
CN6A
MOTHER CN
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
3
4
5
6
7
8
9
10
11
12
13
14
15
16
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
1
17
CN14
MM20-72B
RAM CN
/EXWAIT
/BREQ
/BREQ
/BACK
/TRQ2
/TRQ1
/EXINT1
/EXINT0
/TRQ1
/EXINT1
/EXINT0
/RFSH
/OPTCS
/RD
/IRQ1
/IPLON0
/RESET
A5
A4
A4
A1
A0
A0
/RESET
A2
A3
D15
+24V
VCC
VCC
VCC
01
41
02
42
03
43
04
44
05
45
06
46
07
47
08
48
09
49
10
50
11
51
12
52
13
53
14
54
15
55
16
56
17
57
18
58
19
59
20
60
21
61
22
62
23
63
24
64
25
65
26
66
27
67
28
68
29
69
30
70
31
71
32
72
33
73
34
74
35
75
36
76
37
77
38
78
39
79
40
80
CN6B
20 5061 080 053
R34
10K
10K
R47
4.7K
R46
4.7K
4.7K
R45
4.7K
4.7K
D[0..15]
/OWR
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
VCC
STH1
HTS1
/SCK1
/SCK1
/KRQ
/SHEN1
/SHEN1
/STOP
/POFF
+24V
VCKDC
+24V
VCKDC
R2
1/5W 220
C84
0.1uF
0.1uF
1
2
3
4
5
6
7
8
9
2
3
4
5
6
7
8
9
10
11
12
13
11
12
13
14
15
16
17
18
15
16
17
18
CN8
MLX 52045-1845
CKDC CN
/RESET
VCC
14PIN - - - VCKDC
7PIN - - - GND
SW1
SSSS312
HARDWARE RESET SW
C87
1000pF
R56
10K
1
2
3
IC12A
74HC00
C90
1000pF
4
5
6
IC12B
74HC00
C93
1000pF
VEE
VCC
DL0..DL3
DL0
DL1
DL2
DL3
DL1
DL2
DL3
DISP
FP
LP
DCLK
FP
LP
DCLK
DISP
DCLK
FP
LP
LP
3
2
1
C16
3.3uF
50V
R243
15K
VR3
5K
5K
R247
1.2K
FB43
FB42
FB41
FB39
FB38
FB36
FB34
BLM31X8
FB44
VMEM
/HWR
HWR-
VMEM
VSS
WF
C
CP1
CP2
VDD
VSS
VEE
C
CP1
CP2
VDD
VSS
VEE
VEE
VO
VO
VCC
DL0A
DL1A
DL2A
DL3A
DL1A
DL2A
DL3A
VCKDC
VMEN
1
2
3
2
3
CN15
JP3
VIN
2
VOUT
3
G
N
D
1
IC49
RX5RE
RX5RE
C264
1uF
1uF
1
2
3
4
2
3
4
CN13
INVERTOR CN
GIL-S-4P-S2T2
C28
OS
10uF
10uF
/10V
15
14
13
12
11
10
14
13
12
11
10
9
8
7
6
5
4
3
2
1
8
7
6
5
4
3
2
1
CN10
MLX 53047-1510
LCD CN
C14
3.3uF
50V
2
1
BTCN1
5267-02
BAT CN
/RES
/AS
/AS
VCKDC
-12V
+12V
D[8..15]
BANK
/POFF
A2
VCKDC
-12V
D14
D13
D12
D11
D10
D9
D8
D13
D12
D11
D10
D9
D8
/HWR
VCC
+20V
VCKDC
+12V
A3
+20V
+12V
A3
+20V
D12
RB160L40
R244
1/2W 13
R246
1/2W 13
C35
10uF
16V
16V
C266
0.1uF
0.1uF
VR2
5K
5K
BKLT
1
2
3
R218
10K
14/14
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