Technics SU-V300M2

CP905
1
2
3
4
5
6
7
8
CN906
1
2
3
4
5
6
7
B
A
CP903
1 2 3 4 5 6 7 8
CP904
1 2 3 4 5 6 7 8
CP601CN601
JK601A
HEADPHONES
S809
(SPEAKERS.B)
S808
(SPEAKERS.A)
R822
820
R823
1K
BA
IC471
UPC4570C
TONE AMP
S401
(TONE)
B
A
H.Lch IN H.Rch IN H.GND +B(2) OPERATION STANDBY GND Rch OUT Lch OUT GND +B(1) +B Rch IN GND Lch IN
defeol
on
AB
R486
22K
R488
3.9K
R490
3.9K
R491
1K
R494
56K
VR472-2
100K(C)
(TREBLE)
VR471-2
100K(C)
(BASS)
C486
0.012
C488
0.068
C490
3900P
C491
0.027
R485
22K
R487
3.9K
R489
3.9K
R492
1K
R493
56K
VR472-1
100K(C)
(TREBLE)
VR471-1
100K(C)
(BASS)
C485
0.012
C487
0.068
C489
3900P
C492
0.027
R475
470
R476
470
C471
50V3.3
C472
50V3.3
R477 100K R478 100K
C475 100P C476 100P
C495
0.01
C496
0.01
VR502
100K(G)
(BALANCE)
C478
220P
C480
56P
R480
470K
C482
35V4.7
C484
50V1
R498
3.9K
R496
22K
R510
2.2K
R528
390K
R497
3.9K
R495
22K
R509
2.2K
R825
47K
D820
MA165TA
Q815
2SA1309ARTA
MUTING CONT.
D824
MA165TA
R819
560
D818
LN018304P
(SPEAKERS.A)
D823
MA165TA
R820
560
D819
LN018304P
(SPEAKERS.B)
Q813,814
UN4111TA
LED DRIVE
Q814
Q813
Q810
UN4211TA
LED DRIVE
C561
1000P
C562
1000P
C477
220P
C479
56P
R479
470K
C481
35V4.7
C483
50V1
R501
2.2K
R502
2.2K
1
2
3
4 5
6
7
8
TONE AMP CIRCUIT
C
To MAIN CIRCUIT (CN903)
on SCHEMATIC DIAGRAM-3
E
HEADPHONES
JACK CIRCUIT
D
SCHEMATIC DIAGRAM-2
To MAIN CIRCUIT (CN904)
on SCHEMATIC DIAGRAM-3
E
S807
(POWER)
AB
Q505 Q506
R525
1K
Q818
2SC2785FETA
SWITCHING
(STANDBY)
D817
LN018304P
(OPERATION)
R818
560
C518
0.01
R808
10K
R533
1K
R534
1K
Q507 Q508
R526
1K
ABCD
ABCD
C807
25V4.7
R831
330
R832
1M
D825
MA165TA
R833
330K
Q812
UN4211TA
LED DRIVE
Q817
DTA124ESTP
SWITCHING
(STANDBY)
R834
10K
D826
MA165TA
STANDBY ON
AB
R817
220
D816
LN018304P
(STANDBY)
Q505-508
2SC3327ABTP
MUTING
E501
E401
R532
10K
R
L
G
2
1
3
4
5
6
7
2
1
3
4
5
6
7
0V
0V
0V
15.4V0V
0V
0V
-15.4V
6.2V
5.2V
1.3V
6.2V
0V
6.1V
-14.3V0V
0V
15.4V
6.2V
:POSITIVE VOLTAGE LINE
:PHONO SIGNAL LINE
:NEGATIVE VOLTAGE LINE
-15.4V
0.1V
3.3V
0V 0V
-14.6V
0V0V
4.8V
6.2V
0V 0V
6.2V
0.1V
5.1V
-14.6V -14.6V -14.6V