Schematic Diagram - Yamaha VS-10 Service Manual

A B
VS-10
SCHEMATIC DIAGRAM ( 2/2 MAIN )
1
2
MAIN L
MAIN (4)
23.2
0
0
0
0
-23.4
0.7 0
page E-42/J-40
J
3
MAIN (1)
0 -23.4
0
3 0.7
0
0
0
23.2
4.6 4.6
0
0
0
0
MAIN (1)
4
H
6
page E-42/J-40
IC501, 502 : LM1875T IC550 : LA7956
Power Amp Video Switch
5 6dB
AMP
+
– DRIVER CONTROL
1 2 3 4
5 1 2 3 4 5 6
VIDEO A B VIN1 GND VIN2
OUT
6
7
PIN CONNECTION DIAGRAM OF TRANSISTORS, DIODES AND ICS.
8
DTC144EKA 2SD2396 2SA1674 2SC1740 2SC4208A
2SD1938F 2SB1565 DTC114ES 2SC2878
C
E
B E
B
C B
B C
C
E
E
9
E-43/J-41
C D E
MAIN (2)
23.2 0.1
0
4.1
page E-42/J-40
B
1
MAIN (1)
0
0
0
0.7
0 4.7
0
0
4 INPUT 1 OUTPUT
VIDEO SWITCH
7 8 9
VCC VIN3 VIN4
1SR139-400 MA8051-L S1NB20 D2SBA20 HD74HC153FPEL
1SS355 TC4052BF
Anode Anode
MA8100-H ~
~
+ –
MA8270-L
MA8056-M
–
MA8240-M
~ 16
MA8051-M
~
E Cathode +
C B Cathode
F G
0.1
uPC4570G2 LC78212 TC9482N
M5220FP NJM2192AM
BA15218F
15
14
8
8
4
30 28
1
1
1 1
H I
NJM78M05FA NJM79M12FA LM1875T LA7956
NJM78M12FA
3: IN 3: OUT 1
1: OUT 1: COM
1
2: COM 2: IN 5
J K
9
L