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SCHEMATIC DIAGRAM-10
L601
5V
PLAY
PLAY
4.8V
0V
0.2 s. 2V/DIV.
0.2 s. 2V/DIV.
A
B
C
D
E
F
L501
5V
:POSITIVE VOLTAGE LINE
:MD PLAYBACK SIGNAL LINE
PLAY
4.8V
4.8V
0V
0V
T
0.36
s.
PLAY/REC
T
0V
(1.5V)
1.7V
0V
2.3V
2.4V
5V
14
13
12
11
10
SERIAL I/O
INTERFACE
INTERPOLATOR
CLOCK
DIVIDER
INTERPOLATOR
DEM0
DEM1
TST3
TST2
TST1
15
16
17
18
19
1.4V
4.9V
PLAY
4.2V
P-P
0.2 s. 1V/DIV.
R504
1K
5V
5V
5V
16
15
14
13
12
MICRO COMPUTER INTERFACE
LOCK DET.
PROGRAMMEBLE COUNTER
VAR
REF
PHASE
VCO
COMPARATOR
1
2
3
4
5
2.4V
2.3V
5V
2.6V
2.6V
R503
C505
L502
10K
1000P
5.6
H
:MD RECORDING SIGNAL LINE
4.8V
0V
0.34
s.
5V
2.5V
2.5V
9
8
7
6
5
AGND
VA
DECIMATION
FILTER
MODULATOR
MODULATOR
DECIMATION
FILTER
COMMON
VOLTAGE
8X
MODULATOR
8X
MODULATOR
/PWDA
/PWAD
VD
DGND
20
21
22
23
24
25
5V
4.8V
4.8V
PLAY
3.2V
P-P
1kHz,0dB
1.6V
11
10
9
IC501
TC9246FELP
CLOCK GENERATOR
SELECT
6
7
8
2.2V
(2.5V)
2.5V
2.5V
5V
4
3
2
1
IC601
AK4520AVF-E1
A/D,D/A CONV.
LPF
LPF
26
27
28
5V
2.5V
2.5V
2.5V
C
D
5V
5V
A
B
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