Read Sony HCD-GX20 / MHC-GX20 Service Manual online
27
27
HCD-GX20
5-8. Schematic Diagram – MAIN Section (2/4) –
• See page 19 for Waveforms.
0.6
0.6
0
0
0
4.5
0
0.6
1.2
9.4
0.2
3.7
2.5
0.6
4.7
2.9
12
12
0
0
0.7
0.7
0.7
0.7
0
0
0
0.7
0.7
5.7
1.3
1.2
0.6
4.8
3.4
0
0
0
4.7
0
0
4.8
4.7
0
5
4
4.4
4.7
0.2
0.2
4.8
4.4
4.7
4.8
0
4.7
5.9
5.9
5.9
11.5
7.1
0.2
0.8
0.2
0.8
5.5
5.6
2.7
3.4
5.1
0
0
0
0
0
0
0
0
0
9
9
9
9.1
9.1
9.1
9.1
9.1
9.1
0
0
11.9
11.2
11.9
11.9
2.9
4.7
4.7
1.2
4.8
2.9
2.9
4.7
4.8
4.7
2.4
4.8
AMS
AMS
AMS
SPEANA(R)
SPEANA(L)
5
4
20
19
1
21
22
2
24
3
25
28
29
1211 26 27
23
30
31
34
35
35
36
37
38
38
39
40
41
41
42
43
44
45
43
44
45
46
47
48
33
32
MAIN BOARD
(2/4)
TO
MAIN BOARD
(3/4)
TO
MAIN BOARD
(3/4)
TO
MAIN BOARD
(3/4)
TO
MAIN BOARD
(1/4)
TO
MAIN BOARD
(1/4)
TO
MAIN BOARD
(4/4)
7
C
1
6
2
8
5
IC303
BUFFER
IC202
BUS SHIFT
REGISTER
TO
PANEL BOARD
CN601
(Page 31)
TAPE DECK
(2/2)
TAPE
DECK
DECK
(1/2)
RESET
Q222,223
B SOL DRIVE
Q224,225
A SOL DRIVE
Q226,227
M +B CONT
BIAS OSC
Q201-204
SWITCH
SWITCH
SWITCH
BIAS
REC BIAS
IC201
DECK A/B SELECT
PB/REC EQ AMP
DECK A
DECK B
CN603
50V
50V
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