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HCD-GNX88
Q Q
3 7 6 3 1 5 1 5 0
• WAVEFORMS
– BD84 BOARD –
– MAIN BOARD –
1
1
IC101 wa
IC401 qa
TEI
0.15 Vp-p
1V/DIV, 10 µ sec/DIV
0.2V/DIV, 0.2 msec/DIV
2
2
IC101 wd
FEI
IC401 qd
0.4 Vp-p
0.1V/DIV, 1 msec/DIV
1V/DIV, 50 nsec/DIV
3
3
IC101 ra
T301 5
RFAC
±
T E
0.9
0.4 Vp-p
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
T301 4
50V/DIV, 10 µ sec/DIV
w w w
HCD-GNX88
– PANEL BOARD –
1
IC902 is
XC-OUT
X OUT
2.7 Vp-p
32.768 kHz
4 MHz
1V/DIV, 0.2 µ sec/DIV
X-OUT
2.0 Vp-p
16
MHz
– CDG BOARD –
1
IC1001 tl
XI1
TAPE REC only
67 Vp-p
14.31818 MHz
µ
10.5
sec
2V/DIV, 50 nsec/DIV
TAPE REC only
82 Vp-p
10.5
µ
sec
x
a o
y
.
i
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8
• IC Block Diagram
– DRIVER Board –
IC701, 712 BA6956AN
TSD
3.1 Vp-p
1
2
3
4
5
– BD84 Board –
5.9 Vp-p
Q
Q
IC251 BA5947FM-E2
3
7
6
3
CH4OUTR
15
D
CH4OUTF
16
D
17
CH3OUTF
D
19k
PIN26
6.5k
CH3OUTR
18
D
10k
POW
Vref
POW
VCC
19
POWVCC
VCC
(ch3, 4)
50k 50k
50k 50k
20
POW
MUTE
VCC
50k 50k
21
GND
Vref
GND
CH3RIN
22
CH3FIN
23
100k
CH4IN
24
PIN3
25
CH4CAPA
10k
50k
OUTVREF
26
27
DPOUT
Pre
28
TREVCC
u 1 6 3
Vcc
.
52
52
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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
1
5
1
5
0
8
9
2
D
14
CH1OUTF
D
13
CH1OUTR
– CDG Board –
D
12
CH2OUTF
IC1006 NJM2575F1-TE2
D
11
CH2OUTR
POW
VCC
10
POWVCC
(ch1, 2)
9
CNF4
PWR
1
8
GND
SAVE
2
GND
75
VOUT
3
DRIVER
7
CH2RIN
6
CH2FIN
5
CH1RIN
4
CH1FIN
SW
3
SW
m
2
OPIN+
1
OPIN-
c o
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
4
9
8
2
9
9
6
VCC
GND
5
6dB
4
VIN
LPF
CLAMP
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