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SCHEMATIC DIAGRAM-12
:POSITIVE VOLTAGE LINE
6.8V
R759
C757
470
25V3.3
A
N
6.8V
8
IC751
BA4560FE2
BUFFER AMP
1
0V
R758
220K
R760
C758
C756
470
25V3.3
2.2P
B
N
-8.1V
G
OPERATION(1) CIRCUIT
-8.1V
CN801
7
-8.1V
6
4
5
VR801
4
20K(A)
3
(PHONES
2
LEVEL)
1
5
0V
IC801
M5218AFPE3
HEADPHONES AMP
1kHz,0dB VOLUME:CENTER
Q301,302
2SD1450RSTTA
R327
R303
1.2
1.2
FL DRIVE
Q304
DTA114ESATP
FL DRIVE
6.8V
6.8V
6.8V
Q303
2SB1238QSTV6
REGULATOR
R306
1/4W10
-30.6V
-31.7V
-31.2V
R308
220
D307
:NEGATIVE VOLTAGE LINE
0V
Q703
Q703-706
2SD1450RSTTA
0.5V
( -0.2V)
MUTING
-0.2V
Q704
0V
C755
R755
2.2P
33K
R757
C753
220K
25V3.3
N
0V
0V
0V
7
6
5
2
3
4
0V
0V
-8.1V
C802
R802
10V100
68
N
0V
0V
0V
R804
3
2
1
2.2K
0V
R803
2.2K
0V
6
7
8
C801
R801
0V
0V
6.8V
10V100
68
N
6.8V
Q801,802
2SD1450RSTTA
MUTING
PLAY
C805
0.8V
0.01
P-P
-28.1V
-28.3V
( -27.9V)
( -27.9V)
-26.9V
-27V
Q302
-26.1V
( -27.2V)
-27.4V
Q301
-28.1V
-28.3V
( -27.9V)
( -27.9V)
-26.9V
-27V
C304
50V100
D306
D305
CN301
6
5
D305-307
4
1D3-E
3
2
1
:MD PLAYBACK SIGNAL LINE
R727
150
D711
D713
R731
R733
1SS254TA
1SS254TA
1K
1K
0.5V
(-0.2V)
D712
D714
R732
R734
-0.2V
1SS254TA
1SS254TA
1K
1K
R728
150
R752
27K
R751
27K
CN751
1 2 3 4 5 6
F
OPERATION(2) CIRCUIT
1 2 3 4 5 6
CN804
S902A
(INPUT)
ANALOG
OPT2
OPT1
VR851
20K(A)
(REC LEVEL)
H
HEADPHONE CIRCUIT
CP802
CN802
1
1
2
2
0V
3
3
Q802
4
4
0V
0V
Q801
0V
S901A
(
TIMER)
C806
0.01
I
POWER SWITCH CIRCUIT
POWER
J
TRANSFORMER
CIRCUIT
CN201
CN251
4
4
3
3
2
2
1
1
AC 4.9V
W201
1
AC
2
10.6V
3
4
5
AC 8.6V
6
ANALOG
PLAY
:MD RECORDING SIGNAL LINE
1kHz,0dB
R729
JK701
150
Lch
0V
Q705
OUT
Rch
Q706
R730
0V
JK701
150
Rch
IN
Lch
S903A
(REC MODE)
MONO
STEREO
W903
To
4
FL CIRCUIT
3
(W903) on
2
SCHEMATIC
1
DIAGRAM-8
L802
3.3
H
R
L
G
PLAY
1kHz,0dB
VOLUME:CENTER
PLAY
OFF
REC
To
W901
3
FL CIRCUIT
2
(W901) on
1
SCHEMATIC
DIAGRAM-8
S251
OFF
ON
(POWER)
T201
JK201
L202
L201
220 -230V
50Hz
230 -240V
50Hz
6.2V
P-P
C
JK801
PHONES
170mV
P-P
C
AC IN
[E,EG]
[EB]
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