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CD-PC1881V
Service manual
Voltage - Sharp CD-PC1881V Service Manual
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Service manual
(72 pages)
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CD-PC1881V
IC1
IC2
PIN
PIN
NO. VOLTAGE
NO. VOLTAGE
1
1
2.5V
0V
2
2
2.5V
0V
3
3
2.5V
0V
4
4
2.5V
0V
5
5
2.5V
1.9V
6
6
2.5V
5.0V
7
7
2.5V
0V
8
8
2.5V
0V
9
9
2.5V
2.5V
10
2.5V
10
2.4V
11
11
2.5V
0V
12
12
2.5V
0V
13
13
2.5V
0V
14
14
2.5V
5.0V
15
15
2.5V
0V
16
16
2.5V
0V
17
17
2.5V
5.0V
18
18
2.5V
5.0V
19
19
2.5V
0V
20
20
2.5V
0V
21
21
2.5V
2.5V
22
22
0V
0V
23
23
2.5V
5.0V
24
24
2.5V
0V
25
25
2.5V
0V
26
26
2.5V
0V
27
27
2.5V
0V
28
28
2.5V
0V
29
29
2.5V
0V
30
30
2.3V
5.0V
31
31
2.3V
2.5V
32
32
0V
0V
33
33
0V
0V
34
34
5.0V
0V
35
35
5.0V
5.0V
36
36
0V
4.6V
37
0V
37
1.9V
38
38
5.0V
0V
39
39
0V
0V
40
40
0V
1.9V
41
41
1.6V
4.6V
42
42
2.4V
5.0V
43
43
2.4V
5.0V
44
44
2.4V
2.1V
45
45
0V
2.1V
46
46
2.5V
0V
47
47
2.5V
0.1V
48
48
0V
2.3V
49
49
0V
0V
50
50
2.4V
2.5V
51
51
4.6V
0V
52
52
4.6V
2.5V
53
53
0V
0V
54
54
0V
0V
55
55
5.0V
0V
56
56
5.0V
4.6V
57
57
2.5V
4.6V
58
58
2.5V
4.7V
59
1.0V
59
0V
60
60
1.0V
2.3V
61
61
2.2V
2.3V
62
62
4.2V
0V
63
63
0V
0V
64
64
5.0V
0V
IC902
IC4
PIN
PIN
NO. VOLTAGE
NO. VOLTAGE
1
0V
1
2.6V
2
0V
2
2.6V
3
-27.5V
3
2.6V
4
-27.5V
4
0V
5
-27.5V
5
2.4V
6
0V
6
2.4V
7
0V
7
2.6V
8
0V
8
5.0V
9
0V
10
-25.8V
FE301
11
26.0V
PIN
NO. VOLTAGE
12
-0.15V
13
-0.15V
1
0V (0V)
14
-24.6V
2
0V (0V)
15
-0.1V
3
2.6V (0V)
16
-0.1V
4
2V (1.1V)
17
-0.1V
5
8.5V (0V)
18
-0.1V
6
0V (0V)
19
-27.5V
7
0V (0V)
20
0V
8
0V (0V)
IC301
IC3
PIN
PIN
NO. VOLTAGE
NO. VOLTAGE
1
1
0.9V (0V)
2.5V
2
2
1.6V (0V)
2.6V
3
3
6.0V (0.4V)
2.9V
4
1.6V (0V)
4
3.3V
5
5
0V (0V)
3.3V
6
6
6.0V (0.3V)
3.3V
7
7
5.2V (0.2V)
3.3V
8
8
5.9V (0.3V)
0V
9
9
6.0V (0.3V)
0V
10
0V
IC650
11
0V
12
PIN
0V
NO. VOLTAGE
13
0V
1
0.12V
14
0V
2
15
0.1V
3.3V
3
0.13V
16
3.3V
4
–11.2V
17
3.0V
5
18
0.1V
7.2V
6
0.1V
19
5.0V
7
0.1V
20
2.5V
8
6.2V
21
0V
22
0V
23
0V
IC651
24
7.2V
PIN
NO. VOLTAGE
25
2.5V
26
3.3V
1
0.2V
27
3.3V
2
0.2V
28
11.2V
3
0.2V
29
0V
4
–9.8V
30
0V
5
0.2V
31
0V
6
0.2V
32
0V
7
0.2V
33
0V
8
6.2V
34
0V
35
0V
IC702
36
5.3V
PIN
37
5.3V
NO. VOLTAGE
38
3.3V
1
0V
39
3.3V
2
0V
40
7.2V
3
0.2V
41
0.1V
4
0V
42
0.1V
5
9.8V
6
9.8V
IC101
7
9.8V
PIN
8
9.9V
NO. VOLTAGE
9
9.8V
1
0V (0V)
10
9.8V
2
0V (0V)
11
9.8V
3
0.5V (0.5V)
12
0.5V
4
4.3V (4.3V)
13
0.5V
5
0.2V (0.3V)
14
0.5V
6
1.3V (1.3V)
15
9.8V
7
0V (0V)
16
9.8V
8
0.6V (0.6V)
17
0V
9
4.1V (4.1V)
18
5.0V
10
4.0V (4.0V)
11
0V (0V)
IC703
12
0V (0V)
PIN
NO. VOLTAGE
13
8.1V (8.1V)
14
1
4.8V (4.8V)
0V
15
0V (0V)
2
0V
16
3
4.1V (4.1V)
0.2V
17
0.6V (0.6V)
4
0V
18
0V (0V)
5
9.8V
19
6
2.5V (2.6V)
9.8V
20
0.2V (0.3V)
7
9.8V
21
8
4.3V (4.3V)
9.9V
22
0.5V (0.5V)
9
9.8V
23
0V (0V)
10
9.8V
24
11
0V (0V)
9.8V
12
0.5V
13
IC471
0.5V
14
0.5V
PIN
NO. VOLTAGE
15
9.8V
1
16
5.6V
9.8V
17
2
0V
5.6V
18
3
5.5V
5.0V
4
0V
5
5.6V
6
5.6V
7
5.6V
8
11.1V
IC601
PIN
NO. VOLTAGE
1
5.6V
2
5.6V
3
5.5V
4
0V
5
5.5V
6
5.6V
7
5.6V
8
11.1V
VOLTAGE
IC302
IC303
PIN
PIN
NO. VOLTAGE
NO. VOLTAGE
1
1
2.5V (2.5V)
1.6V (1.6V)
2
2
0V (0V)
1.6V (1.6V)
3
3
0V (0V)
7.1V (8.1V)
4
4
0V (0V)
0.2V (0.6V)
5
5
4.5V (4.5V)
1.6V (1.6V)
6
6
4.5V (4.5V)
0V (0V)
7
7
0.2V (11.9V)
5.1V (5.1V)
8
8
0V (0V)
0V (0V)
9
9
0V (0V)
2.3V (2.3V)
10
10
0V (0V)
2.3V (2.3V)
11
11
5.1V (5.1V)
6.4V (8.1V)
12
12
0V (0V)
0.9V (0.9V)
13
13
0V (0V)
1.1V (2.1V)
14
14
0V (0V)
1.8V (1.6V)
15
15
0V (2.5V)
2.2V (1.3V)
16
16
2.5V (0V)
1.7V (1.7V)
17
17
5.1V (5.1V)
1.6V (1.7V)
18
18
0.9V (0.9V)
1.6V (1.6V)
19
19
0.9V (0.9V)
0.4V (0.5V)
20
20
1.3V (1.1V)
7.1V (8.1V)
21
21
0V (0V)
7.1V (8.1V)
22
22
2.5V (2.5V)
1.7V (1.7V)
23
1.7V (1.7V)
24
1.7V (1.7V)
IC401
PIN
NO. VOLTAGE
IC501
PIN
1
5.0V
NO. VOLTAGE
2
5.0V
1
4.7V
3
4.9V
2
4.7V
4
4.8V
3
4.7V
5
5.0V
4
4.7V
6
4.9V
5
4.7V
7
4.8V
6
4.7V
8
5.0V
7
4.7V
9
4.8V
8
9.4V
10
4.8V
9
4.7V
11
5.0V
10
4.7V
12
4.9V
11
4.7V
13
4.8V
12
4.7V
14
5.0V
13
4.7V
15
4.9V
14
4.7V
16
5.0V
15
4.7V
17
5.0V
16
4.7V
18
4.9V
17
0V
19
5.0V
18
9.4V
20
5.0V
19
2.5V
21
5.0V
20
0.6V
22
5.0V
21
-0.1V
23
4.0V
22
4.7V
24
-0.1V
23
4.7V
25
-0.1V
24
4.7V
26
0V
25
4.7V
27
5.0V
26
4.7V
28
5.0V
27
4.7V
29
5.0V
28
4.7V
30
4.9V
29
4.7V
31
5.0V
30
4.7V
32
5.0V
31
5.0V
33
4.9V
32
2.3V
34
5.0V
33
-0.1V
35
4.8V
34
4.0V
36
4.9V
35
-0.1V
37
5.0V
36
3.6V
38
4.8V
37
-0.1V
39
4.9V
38
4.0V
40
5.0V
39
0V
41
4.8V
40
4.7V
42
4.9V
41
4.8V
43
5.0V
42
0V
44
4.8V
43
4.7V
45
4.9V
44
4.7V
46
5.0V
45
4.7V
47
5.0V
46
4.7V
48
4.9V
47
4.7V
49
5.0V
48
4.7V
50
5.0V
49
4.7V
51
5.0V
50
4.7V
52
5.0V
51
5.4V
53
5.0V
52
4.7V
54
5.0V
53
5.4V
55
5.0V
54
4.6V
56
10.0V
55
4.6V
57
5.0V
56
4.6V
58
5.0V
57
3.7V
59
5.0V
58
3.5V
60
5.0V
59
3.4V
61
5.0V
60
5.4V
62
5.0V
61
4.8V
63
5.0V
62
5.4V
64
4.9V
63
4.7V
64
4.7V
– 30 –
IC701
PIN
PIN
PIN VOLTAGE
VOLTAGE
NO.
NO.
NO.
1
51
4.7V
4.7V
2
52
4.7V
0V
3
53
4.6V
0V
4
54
0V
4.7V
5
55
0V
0V
6
56
0V
0V
7
57
0V
4.6V
8
58
0V
4.6V
9
59
0V
4.6V
10
60
4.7V
4.6V
11
61
2.2V
0V
12
62
2.0V
4.7V
13
63
0V
4.7V
14
64
4.6V
5.0V
15
65
0V
4.9V
16
66
4.7V
–27.0V
17
0V
67
–27.0V
18
68
4.7V
–27.0V
19
69
0V
–27.0V
20
70
4.7V
–27.0V
21
71
4.7V
–27.0V
22
72
0V
–27.0V
23
73
0V
0V
24
74
0V
0V
25
75
0V
-26.0V
26
76
0V
–22.0V
27
77
0V
–24.0V
28
78
0V
0V
29
0V
79
–27.0V
30
80
0.9V
–24.0V
31
81
4.9V
–24.0V
32
82
4.9V
–24.0V
33
83
4.9V
0V
34
4.7V
84
0V
35
85
4.9V
–21.0V
PIN
36
86
4.6V
0V
NO.
37
87
4.6V
0V
38
88
4.9V
0V
39
89
4.9V
0V
40
90
0V
–24.0V
41
91
0V
0V
42
4.6V
92
–24.0V
43
93
3.5V
0V
44
94
11.9V
–24.0V
45
95
11.9V
0V
46
96
4.4V
–24.0V
47
97
4.6V
–24.0V
48
98
0V
–24.0V
49
99
4.6V
–24.0V
50
100
0V
–24.0V
QV1
ICV3
PIN
PIN
NO. VOLTAGE
NO. VOLTAGE
1
1
5.0V
6.8V
2
2
0V
0V
3
3
3.3V
0V
4
0V
5
0V
ICV4
6
5.0V
7
PIN
0V
NO. VOLTAGE
8
0V
9
1
0V
2.0V
2
10
0V
0.5V
11
3
0V
2.0V
4
12
2.0V
0V
13
3.3V
5
2.2V
14
6
2.6V
2.2V
15
7
0V
5.0V
16
0.5V
8
2.2V
17
0.5V
18
1.0V
19
2.7V
20
5.0V
IC803
21
0V
PIN
NO. VOLTAGE
22
1.5V
23
1.5V
1
7.1V
24
1.5V
2
0.6V
25
1.5V
3
5.5V
26
1.5V
27
0V
IC804
28
2.5V
PIN
29
NO. VOLTAGE
2.5V
30
0V
1
17.0V
31
0V
2
0V
32
0V
3
12.0V
33
0V
34
0V
IC805
35
0V
36
PIN
PIN
0V
NO. VOLTAGE
NO. VOLTAGE
37
0V
1
38
17.0V
0V
2
39
1.3V
0.5V
3
40
7.3V
0V
ICV1
PIN VOLTAGE
VOLTAGE
NO.
1
33
0V
0V
2
34
5.0V
0V
3
35
5.0V
5.0V
4
36
0V
5.0V
5
37
5.0V
0V
6
38
1.5V
5.0V
39
7
0V
0V
8
40
0V
0V
9
41
0V
3.0V
10
42
5.0V
0V
11
43
0.1V
0V
12
44
0V
5.0V
13
45
0.1V
0V
14
46
0V
0V
15
47
5.0V
0V
16
48
0V
0V
17
49
0V
0V
18
50
0V
0V
19
51
0V
5.0V
20
52
0.5V
0V
21
53
0V
5.0V
22
54
0V
5.0V
23
55
0V
0.1V
24
56
5.0V
1.2V
25
57
0V
3.3V
26
58
0V
3.3V
27
59
0V
3.3V
28
60
0V
3.3V
29
61
0V
3.3V
30
62
0V
0V
31
63
0V
3.3V
32
64
0V
2.8V
ICV2
PIN VOLTAGE
VOLTAGE
NO.
1
51
3.3V
3.3V
2
52
3.3V
3.3V
3
53
3.3V
2.5V
4
54
3.3V
0.5V
5
55
3.3V
0V
6
56
0V
0V
7
57
3.3V
0V
8
58
3.3V
0V
9
59
3.3V
0V
10
60
3.3V
0V
11
61
0V
0V
12
62
0V
0V
13
63
1.5V
3.3V
14
64
1.5V
0V
15
65
3.3V
3.3V
16
66
3.3V
0V
17
67
3.3V
0V
18
68
0V
0V
19
69
0.5V
0V
20
70
5.0V
0V
21
71
5.0V
0V
22
72
1.5V
0V
23
73
3.3V
0V
24
74
3.3V
0V
25
75
3.3V
3.3V
26
76
0V
0V
27
77
5.0V
1.5V
28
78
1.0V
0V
29
79
0V
0V
30
0V
80
0V
31
81
2.5V
3.3V
32
82
2.0V
3.3V
33
83
2.5V
3.3V
34
84
0V
3.3V
35
0V
85
1.0V
36
86
3.3V
1.5V
37
87
0V
0V
38
88
1.5V
0V
39
89
1.5V
0V
40
1.5V
90
0V
41
1.5V
91
0V
42
92
1.5V
3.3V
43
93
0V
0V
44
94
3.3V
0V
45
95
2.5V
5.0V
46
96
1.0V
0V
47
97
0.5V
2.5V
48
98
0.5V
2.5V
49
99
2.6V
1.5V
50
100
0V
0V
IC806
1
12.0V
2
1.3V
3
4.9V
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