Circuit Board Location - Sony HCD-GP7 Service Manual

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3 7 6 3 1 5 1 5 0

CIRCUIT BOARD LOCATION

LOADING board
PANEL board
HP board
VOL board
T E
L 1 3 9 4 2 2 9 6 5 1 3
POWER board
TC board
w w w
.
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CD board
MAIN board
SPEAKER board
THR board
POWER-AMP board
SUB-POWER board
x a o u 1 6 3
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i
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8 9
• Waveforms
– CD Board –
1
IC101 t;
(RFAC)(CD Play mode)
860mVp-p
200 mV/DIV, 400 ns/DIV
2
IC101 ra
(TE)(CD Play mode)
350mVp-p
100 mV/DIV, 20 s/DIV
3
IC101 el
(FE)(CD Play mode)
250mVp-p
100 mV/DIV, 20 s/DIV
Q Q
3 7 6 3 1 5 1
c o
.
23 23
2 4 2
9 8
– MAIN Board – – TC Board –
4 6
IC401 qa (XCOUT) Q642 collector
(TAPE REC mode)
3.0 Vp-p
30.5 s 12.3 s
1 V/DIV, 10 s/DIV 5 V/DIV, 4 s/DIV
5
IC401 qd (XOUT)
– PANEL Board –
2.8 Vp-p
7
Q801 collector
62 ns
1 V/DIV, 40 ns/DIV
9.9 µ s
5V/DIV, 4 µ s/DIV
5 0 8 9 2 4 9 8 2
m
HCD-GP7
9 9
12.6 Vp-p
17.5Vp-p
9 9