Fostex CR200 Service Manual page 43

AUDIO DIGITAL BOARD ASSY
• Measuring condition: DC input unless otherwise noted.
1
IC801 pin 2
(ADC LDATA)
2
IC801 pin 27
(ADC RDATA)
During REC
(Analog 1kHz 0dB)
1V/div 1mS/div
1
2
3
IC801 pin 14 (ADC LRCK)
4
IC801 pin 16 (ADC DATA)
5
IC801 pin 15 (ADC BCK)
During REC (1kHz 0dB)
10V/div 2 S/div
3
4
5
IC301 (LC89585) [V]
P n i M O D E P n i
N . o S T O P P L A Y R E C N . o
1 0 0 0 3 5
2 0 0 0 3 6
3 0 0 0 3 7
4 0 0 0 3 8
5 2 4 . 2 4 . 2 4 . 3 9
6 2 4 . 2 4 . 2 4 . 4 0
7 5 0 . 5 0 . 5 0 . 4 1
8 1 8 . 1 8 . 1 8 . 4 2
9 0 0 0 4 3
1 0 2 5 . 2 5 . 2 5 . 4 4
1 1 2 5 . 2 5 . 2 5 . 4 5
1 2 0 0 0 4 6
1 3 5 0 . 5 0 . 5 0 . 4 7
1 4 2 0 . 2 3 . 2 4 . 4 8
1 5 0 0 0 4 9
1 6 0 0 0 5 0
1 7 0 0 0 5 1
1 8 0 5 0 . 5 0 . 5 2
1 9 0 5 0 . 5 0 . 5 3
2 0 5 0 . 5 0 . 5 0 . 5 4
2 1 0 0 0 5 5
2 2 0 0 0 5 6
2 3 0 0 0 5 7
2 4 0 0 0 5 8
2 5 0 0 0 1 . 5 9
2 6 2 4 . 2 4 . 5 0 . 6 0
2 7 2 4 . 2 4 . 0 o t 3 4 . 6 1
2 8 2 4 . 2 4 . 0 o t 2 4 . 6 2
2 9 5 0 . 5 0 . 5 0 . 6 3
3 0 0 1 6 . 0 6 4
3 1 2 0 . 2 0 . 2 2 . 6 5
3 2
2 5 . 0 2 5 . 6 6
3 3
0 0 0 6 . 6 7
3 4 0 0 6 . 0 6 . 6 8
6
IC401 pin 28(LRCKI)
7
IC401 pin 1 (DIN)
8
IC401 pin 2 (BCKI)
During REC
10V/div 2 S/div
6
GND
7
8
GND
9
IC304 pin 9 (AO)
10
IC304 pin 1 (I/O)
Optical input during REC
5V/div 0.2 S/div
9
GND
10
GND
GND
M O D E P n i
S T O P P L A Y R E C N . o S T O P
2 0 . 2 0 . 2 0 . 6 9 0
0 2 5 . 2 5 . 7 0 0
0 5 0 . 0 7 1 0
2 2 . 2 2 . 2 2 . 7 2 0
2 7 . 2 7 . 2 6 . 7 3 0
0 0 0 7 4 0
5 0 . 5 0 . 5 0 . 7 5 5 0 .
2 0 . 2 0 . 2 2 . 7 6 2 6 .
2 0 . 2 2 . 2 2 . 7 7 2 7 .
0 2 4 . 0 7 8 2 4 .
2 0 . 2 0 . 2 0 . 7 9 2 4 .
2 5 . 2 5 . 2 5 . 8 0 0
2 4 . 2 4 . 2 4 . 8 1 0
2 0 . 2 0 . 2 1 . 8 2 0
0 0 0 8 3 5 0 .
4 9 . 4 9 . 4 9 . 8 4 0
0 0 0 8 5 0
5 0 . 5 0 . 3 9 . 8 6 0
5 0 . 5 0 . 4 1 . 8 7 0
0 0 2 3 . 8 8 0
0 0 2 3 . 8 9 5 0 .
0 0 2 4 . 9 0 0
0 0 2 5 . 9 1 1 4 .
0 0 2 5 . 9 2 5 0 .
0 0 2 5 . 9 3 5 0 .
0 0 2 4 . 9 4 0 2 .
5 0 . 5 0 . 5 0 . 9 5 0
0 0 0 9 6 0
0 0 1 4 . 9 7 4 8 .
0 0 1 3 . 9 8 4 9 .
0 0 2 4 . 9 9 0 6 .
5 0 . 5 0 . 2 0 . 1 0 0 5 0 .
5 0 . 5 0 . 4 1 .
0 0 0 9 .
11
IC302 pin 9 (VCO IN)
1V/div
12
IC302 pin 4 (VCO OUT)
10V/div
13
IC301 pin 80 (EC ERR)
10V/div
During REC 50nS/div
11
GND
GND
12
GND
13
14
IC301 pin 1
(DIN1 : OPT IN)
15
IC301 pin 4
(DIN2 : COAX IN)
Optical, coaxial and
simultaneous input
During REC
10V/div 0.2 S/div
GND
GND
14
15
IC304 (MB81C4256A
M O D E
-70PJ) [V]
P L A Y R E C
P n i M O
0 0 8 .
N . o S T O P P L
0 0
1 0
0 0 7 .
2 0
0 0
3 5 0 . 5
0 0
4 5 0 . 5
0 0
5 0
5 0 . 5 0 .
6 -
0 2 5 .
7 -
5 0 . 2 7 .
8 -
0 2 4 .
9 0
0 2 4 .
1 0 0
5 0 . 0
1 1 0
0 0
1 2 0
0 0
1 3 5 0 . 5
0 5 0 .
1 4 0
0 4 9 .
1 5 0
0 3 1 .
1 6 0
0 0 6 .
1 7 0
0 0 7 .
1 8 0
0 1 9 .
1 9 -
5 0 . 5 0 .
2 0 -
0 0
2 1 -
5 0 . 1 3 .
2 2 5 0 . 5
5 0 . 5 0 .
2 3 5 0 . 5
4 9 . 4 9 .
2 4 0
0 0 3 .
2 5 0
0 0
2 6 0
0 0
4 8 . 4 8 .
4 8 . 4 8 .
2 3 . 2 3 .
5 0 . 5 0 .
16
IC404 pin 7
(LIN OUT Lch) 5V/div
17
Q409 (Emitter) 5V/div
18
IC406 pin 7
(HP OUT Lch) 10V/div
During PLAYBACK
(CD 1kHz)
0.5mS/div
16
GND
GND
17
GND
18
GND
GND
IC404 (NJM5532MD) [V]
P n i M O D E
N . o S T O P P L A Y
D E
1 0 0
A Y R E C
2 1 2 . 1 2 .
0 1 4 .
3 1 2 . 1 2 .
0
1 4 .
4 9 - 9 -
0 .
4 1 .
5 0 0
0 .
2 0 .
6 0 0
0 2 5 .
7 0 0
- -
8 9 9
- -
- -
0 1 3 .
IC406 (M5218AFP) [V]
0 1 4 .
0 2 5 .
P n i M O D E
0 2 5 .
N . o S T O P P L A Y
0 . 5 0 .
1 0 0
0 2 5 .
2 0 0
0 2 5 .
3 0 0
0 2 5 .
4 9 - 9 -
0 2 5 .
5 0 0
0 2 5 .
6 0 0
- -
7 0 0
- -
8 9 9
- -
0 . 4 1 .
0 . 3 9 .
0 0 9 .
0 0 8 .
0 0
CR200
GND
GND
GND
R E C
0
1 2 .
1 2 .
9 -
0
0
0
9
R E C
0
0
0
9 -
0
0
0
9
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