Schematic Diagram - Main Section (2/4) - Sony HCD-GX20 Service Manual

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5-8. Schematic Diagram – MAIN Section (2/4) –
3 7 6 3 1 5 1 5 0
MAIN BOARD
TAPE
DECK
(1/2)
0.6
DECK A
0
0
DECK A/B SELECT
PB/REC EQ AMP
0
4.5
0
0.6
DECK B
T E
L 1 3 9 4 2 2 9 6 5 1 3
4
SWITCH
0
12
SWITCH
11.9 12
11.9
11.2
0
11.9
0.7
0
50V
BIAS
w w w
.
• See page 19 for Waveforms.
(2/4)
2.5
IC201
3.7
0.2
9.4
1.2
50V
BIAS OSC
0 0
0.7
0.7
0
0
0.7 0.7
Q201-204
SWITCH
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y
i
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8
TO
TO
5 1 MAIN BOARD
MAIN BOARD
(1/4)
(3/4)
19 20 21 1
IC303
BUFFER
5.9
5.9
5.7
1.3
SPEANA(L)
0.7
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5.5
3 5.1 7 6 3
0.8
3.4
AMS AMS
0.2
2.7
5
0
9.1 9
0
9.1
0
0
0
0
9.1
9
9.1
0
0
9.1
9
9.1
0
Q224,225
Q222,223 Q226,227
B SOL DRIVE A SOL DRIVE M +B CONT
TAPE DECK
(2/2)
u 1 6 3
.
27 27
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2 4
9 9 8
TO TO
MAIN BOARD 6 MAIN BOARD
(3/4) (1/4)
2 3 22 23 24
5.9
11.5
7.1
1.2
0.6
SPEANA(R)
1 5 1 5 0 8 9 2 4
5.6
AMS
0.8
0.2
4.7
IC202
0
RESET
BUS SHIFT
REGISTER
m
c o
HCD-GX20
2
9 9
TO
MAIN BOARD
2 8
(3/4)
1211 26 27
25 28 29
30
7
9 8 2 9 9 TO
MAIN BOARD
(4/4)
31
32
33
34
35
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CN603
TO
C
PANEL BOARD
CN601
(Page 31)