Technics SU-V300M2

B
CN901 CN902
ST1
DATA1
CK1
AC-RELAY
SP-A SP-B
GND
+B(2)
BACK UP
B
A
C415
100P
R415
1K
R416
1K
C416
100P
C417
100P
R401
1K
R402
1K
C418
100P
C419
100P
R405
1K
R406
1K
C420
100P
C407
100P
R407
1K
R408
1K
C408
100P
C409
100P
R409
1K
R410
1K
C410
100P
C411
100P
R411
1K
R412
1K
C412
100P
C413
100P
R413
1K
R414
1K
C414
100P
A
B
D
E
F
G
GND
Rch
Lch
PHONO
Rch
TUNER
Rch
CD
Rch
AUX
Rch
REC(OUT)
Rch
PLAY(IN)
Rch
REC(OUT)
Rch
PLAY(IN)
TAPE1
E401A
1 2 3 4 5 6 7 8
CN903
H.Lch OUT
H.GND
H.Rch OUT
GND
+B(2)
STABDBY
OPERATION
CN904
Lch IN
GND
Rch IN
GND
+B(1)
Lch OUT
Rch OUT
-B
ABC
IC401
NJU7312AL
INPUT SELECTOR
IC451
AN6558F
PHONO EQ AMP
AEG
AEGBFC D
R426 10K
R425 10K
C
A
B
BFC D
BA
A
1234
5 6 7 8
AEBC F
C
A
B
D
1 2 3 4 5 6 7 81 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8
B
A
IC402
M5218AP
BUFFER AMP
C404 35V4.7
C402 0.01
1234
5 6 7 8
1 2 3 4 5 6 7 8 9 10 11 12 13 14
1516171819202122232425262728
X1 X2 X3 X4 X5 X6 X7 X8
X1 X2 X3 X4 X5 X6 X7 X8
DATA CLK
GNDSTB
R467
1K
R463
12K
R461
180K
C459
0.022
C461
6800P
R459
68
C463
35V4.7
R465
56K
C455
1000P
C456
1000P
C460
0.022
C462
6800P
R460
68
R462
180K
R464
12K
R468
1K
C466
0.01
C464
35V4.7
R466
56K
R449
120
R450
120
C451
35V4.7
C452
35V4.7
R451
220K
R452
220K
R455
56K
R456
56K
R457
270
R458
270
C457
10V33
C458
10V33
R427
10K
C405
1000P
C427
16V10
C428
16V10
C421
100P
C422
100P
R431
27K
R432
27K
R429
100K
R430
100K
C426
16V10
C425
16V10
R424
1K
R423
1K
JK401
Lch
JK401
Lch
JK402
Lch
JK402
Lch
JK403
Lch
JK403
Lch
JK404
Lch
JK404
DG
C711
270P
C401 35V4.7
C403 0.01
R453
1K
R454
1K
C467
180P
C468
180P
C
ADG
BC EF
MAIN CIRCUIT
E
C465
0.01
To OPERATION CIRCUIT (CP901)
on SCHEMATIC DIAGRAM-1
A
To OPERATION CIRCUIT (CP902)
on SCHEMATIC DIAGRAM-1
A
To TONE AMP CIRCUIT (CP903)
on SCHEMATIC DIAGRAM-2
C
To TONE AMP CIRCUIT (CP904)
on SCHEMATIC DIAGRAM-2
C
SCHEMATIC DIAGRAM-3
TAPE2
0V 0V 0V
0V 0V 0V
-15.4 V
15.4V
-15.4V
15.4V
0V
0V0V0V
0V 0V
-15.3V
0V 0V 0V 0V 0V 0V 0V 0V 0V 0V 0V 0V
0V0V 0V 0V 0V 0V 0V 0V 0V 0V 0V 0V 0V15.3V
PHONO
SIGNAL
-15.4V
15.4V
-15.4V
6.2V
:POSITIVE VOLTAGE LINE :PHONO SIGNAL LINE
:NEGATIVE VOLTAGE LINE :REC OUT SIGNAL LINE
REC OUT
SIGNAL (Rch)
REC OUT
SIGNAL (Lch)