Sanyo GCD 1500 (AU) Service Manual page 37

Sanyo gcd 1500 (au) cd stereo sound system
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,.,- ,,.
.. ...
.. .. . .. . .-
IC BLOCK
DAIGRAM
AMP.
SECTION
IC903 LA4270 (6W Class Dual
Power Amp.)
IC904 IA3161
(2 Channel
Pre-Amp.)
Vcc'
GND
-----
OUTPUT
OUTPUT
-I
VOLTAGES
OF IC (CD)
IC101 LA921OM
Measuring
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Stop Mode
o
-4.9
0
0
0
0
0
0
0
2.3
2.5
2.s
o
0
------
-----
,----
-----
-----
--
__,
.----
-----
-----
-----
----
0
0
-----
----
-----
-----
----!
-----
----
Play Mode
o
-4.9
FIUC
Flue
f k
Flue
Flue
o
0
Flue
Flue
Flue
Flue
Flue
Flue
Fk
Measuring
Pin No.
. . m....
18
-
—49.-
20
21
22
23
24
25
.
26
27
28
29
30
31
32
Stop Mcde
o
0
0
0
0
0
0
0
0
0
0.7
2.3
0
0
------
-----
,----
.----
-----
----,
.----
-----
-----
.----
-----
-----
----
-----
-----
----
0
.4.9
----
----
Play Mode
Fk
Flue
FIIJC
Flue
Flue
FIIX
FIx
Flue
o
Fk
FkIC
Flue
Flue
Fluc
FIIJC
-4.9
Measuring
Pin No.
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
Stop Mode
o
0
0
4.9
4.9
0
0
0
0
0
0
0
4.9
4.9
.-----
-----
,----
-----
-----
--
__,
.----
-----
-----
.----
-----
-----
----
.----
----.
----,
.----
----
0.6
4.0
Play Mode
Flue
Fku
Fk
4.9
Flue
Flue
Flue
F/IJC
o
Flue
Flue
Flue
Flue
FILK
Flue
Flue
Meawrlng
Pin No.
49
50
51
52
52
M
55
66
57
58
59
60
61
62
63
64
Stop Mode
4.0
0
0
0
2.5
2.3
2.3
4.9
2.5
2.5
2.5
3.9
2,3
1.7
----------
. ,----
-----
-----
--
_-,
.----
-----
-----
.----
-----
----
4.9
0
Play Mode
FIIJC
Flue
----
-----
-----
-----
.----
----
FIIJC
FIIJC
Flvc
Flue
Flue
4.9
Fbc
FIUC
Flue
FILU
Flue
Fk
Flue
0
Measuring
Pin No.
65
66
67
66
69
70
71
72
73
74
75
76
77
78
79
80
Stop Mcde
o
0.5
0
0
-0.2
.0.2
0
-0.2
0
4,6
.4.9
4.7
4.9
0
----------
. ,----
.----
-----
----,
.----
-----
-----
.----
-----
-----
----
0
0
Plav Mode
o
FIIX
FIx
Flue
----
-----
-----
.----
----
Flue
Flue
0
Flue
Flue
Flue
FIUC
Fk
5.0
Fk
Flue
0
IC102 LC6524
Meawdng
Pin No.
1
I
2
I
3
I
4
I
5
I
6
I
7
I
6
I
9
I
10
StoP Mode
I
o
0
-lo
0
0
0
0
10
0
0
IC104
LC7861 E
Flue : Fluctuation
Measuring
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
StoP
Mode
o
2.3
2.3
2.5
0
2.4
2.s
2.5
0
0
0
5.0
0
2.5
.---------
. -----
-----
-----
----,
.----
-----
-----
._---
-----
-----
----
4.1
4.1
Play Mode
o
----
-----
----<
-----
----
2.3
2.3
2.9
0
2.5
2.5
2.5
0
1.4
0
0
0
2.5
4.1
0
Measuring
Pin No.
17
16
19
20
21
22
28
24
25
26
27
28
29
30
31
32
Stop Mode
4.1
2.3
0
5.0
5.0.
0
0
5.0
0
0
0
0
#o
so
------
-----
,----
-----
-----
----<
-----
-----
-----
.----
-----
-----
----
-----
-----
----,
-----
----
1.2s
1.2s
Play Mode
1.3
2.3
S.o
o
S.o
o
0
S.o
o
0
0
0
#so
S.o
1.25
1.2s
Measuring
Pin No.
33
34
3s
36
37
38
39
40
41
42
43
44
45
46
47
48
Stop Mcde
2.s
2.s
o
2.5
0
2.s
2.s
1.6
2.s
4.s
2.5
0.1
2.3
0
----------
.,----
.----
-----
----, .----
-----
----- .----
-----
-----
----
2.s
1.3
Play Mode
2.5
2.s
----
-----
----,
.----
----
2.s
2.5
0
2.s
2.s
1.6
2.s
0
0
0
0
0.1
2.5
1.3
Mea$uring
Pin No.
49
50
S1
52
53
54
55
56
57
S8
59
60
61
62
63
64
Stop Mode
2.s
o
0
0
0
0
0
0
S.o
1.6
2.4
S.o
o
0
----------
. ,----
.----
-----
----
-----
-----
-----
.__--
-----
_____
----
2.3
2.s
Plav Mode
2.5
0.3
----
-----
-----
-----
----
0
0
0
48
4.8
0
0
1.5
2.4
5.0
0
0
2.3
2.5
IC105 TDA1311T
Measuring
Pin
No.
1
I
2
I
3
I
4
I
5
1
6
I
7
I
8
Stop Mode
I
2.4
2.4
0
0
4.2
2.9
0.7
2.9
I
-42-

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