Sony HCD-GNX60 Service Manual page 48

HCD-GNX60/GNX70/GX9900
Q Q
3 7 6 3 1 5 1 5 0
• WAVEFORMS
– CD BOARD – – MAIN BOARD –
1 1
IC101 wa
TEI
0.15 Vp-p
1V/DIV, 10 µ sec/DIV
0.2V/DIV, 0.2 msec/DIV
2 2
IC101 wd FEI
0.4 Vp-p
0.1V/DIV, 1 msec/DIV 1V/DIV, 50 nsec/DIV
3 3
IC101 ra
RFAC
±
0.9 0.4 Vp-p
T E
L 1 3 9 4 2 2 9 6 5 1 3
0.2V/DIV, 0.5 µ sec/DIV 50V/DIV, 10 µ sec/DIV
4
50V/DIV, 10 µ sec/DIV
w w w
HCD-GNX60/GNX70/GX9900
– PANEL BOARD –
1
IC401 qa IC902 is
XC-OUT X OUT
2.7 Vp-p
32.768 kHz
4 MHz
1V/DIV, 0.2 µ sec/DIV
IC401 qd X-OUT
2.0 Vp-p
16
MHz
T301 5
TAPE REC only
67 Vp-p
10.5 µ sec
T301 4 TAPE REC only
82 Vp-p
10.5 µ sec
x a o
. i
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• IC Block Diagram
– DRIVER Board –
IC701, 712 BA6956AN
TSD
3.1 Vp-p
1 2 3 4 5
– CD Board –
Q Q
IC251 BA5947FM-E2 3 7
15
CH4OUTR D
CH4OUTF 16 D
17
CH3OUTF D
19k
PIN26
6.5k
CH3OUTR 18 D
10k
POW Vref
POW
19 VCC
POWVCC VCC
(ch3, 4)
50k 50k
50k 50k
20 POW
MUTE
VCC
50k 50k
GND 21
Vref
GND
CH3RIN 22
CH3FIN 23
100k
CH4IN 24
PIN3
25
CH4CAPA
10k
50k
OUTVREF 26
DPOUT 27
u 1 6 3
y
Pre
TREVCC 28
Vcc
48 48
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8 9 2 4 9
– PANEL Board –
IC904 NJM2760V-TE2
IN1 1
IN2 2
CONTROL LOGIC
BUF1OUT 3
6 7 8 9
BPF2IN1 4
BPF
BPF2IN2 5
BPF3IN1 6
BPF
BPF3IN2 7
BPF4IN1 8
BPF
BPF4IN2 9
GND 10
6 3 1 5 1 5 0 8 9
CH1OUTF
D 14
D 13 CH1OUTR
CH2OUTF
D 12
D 11 CH2OUTR
POW
VCC
10 POWVCC
(ch1, 2)
9 CNF4
8 GND
GND
7 CH2RIN
6 CH2FIN
5 CH1RIN
4 CH1FIN
SW
3 SW
m
2
OPIN+
c o
1 OPIN-
.
8 2 9 9
BPF2OUT
20
19 BPF1IN1
DET
BPF
BPF1IN2
18
17 RECOUT
DET 16 BPF1OUT
BPF2OUT
DET 15
DET 14 BPF3OUT
DET 13 BPF4OUT
12 NC
11 VCC
2 4 9 8 2 9 9