Schematic Diagram - Yamaha YSTMS50B Service Manual

A B

SCHEMATIC DIAGRAM

1
0
0
VOLUME
0
2
PHONE AMP
11.7
0
0
0
-11.5
0
0
0
3
0
0
0
4
TO LEFT
SPEAKER
TO RIGHT
SPEAKER
5
11.7 11.4 11.4
10.4
6
MAIN ( F )
7
POWER
BE
WH
8
BL BR
WH BE
C D E
(HEADPHONE)
OFF ON MAIN (C)
(POWER)
HPF
11.7
0
0
0
-11.5
0
0
0
LPF
-11.5
0
0
0
0
0
11.7
BASS
MAIN ( E )
POWER SUPPLY
27.1
AC43.2 11.7
27.1
0
-27.1
0
-11.5
-27.1
F G
INPUT 2
INPUT 1
TO
SUB Wo.
MAIN ( D )
BL RE
POWER AMP
0
11.7
0 0
0
0
0 0
0
0
0
0 0 0
0
-11.5
LIMITER
MAIN ( A )
H I
2.2
SATELLITE
+
TWEETER
–
L ch
RE
+
SATELLITE
BL
MIDRANGE
–
L ch
MAIN ( B )
2.2
SATELLITE
+
TWEETER
–
R ch
+ SATELLITE
MIDRANGE
–
R ch
WOOFER
WH –
+
RE
A.N.I.C
0
-1.5
0
0
0
0
* All voltage are measured with a 10M /V DC electric volt meter.
* Components having special characteristics are marked Z and
must be replaced with parts having specifications equal to those
originally installed.
* Schematic diagram is subject to change without notice.
J K
YST-MS50
(M)
PIN CONNECTION DIAGRAM OF TRAN-
SISTORS, DIODES AND ICS.
1SS133
NJM4556AL
Anode
8
Cathode
1
RBV-402
TO
SUB Wo.
NJM4558D
–
+
4
8
1
2SA1015 (O, Y)
2SC1815 (Y, GR)
2SC2878 (A, B)
STK408-040E
E
C
B
20
2SK304 (E)
1
D
G
S
NJM78M12FA NJM79M12FA
1: OUTPUT 1:COMMON
2:INPUT
2: COMMON
3:OUTPUT 3 2
3: INPUT 3 2
1
1
IC1, 2, 7 : NJM4558D
Dual OP-Amp
OUT 1 8 +V
1 CC
–IN 2 7 OUT
1 2
+ – + –
+IN 3 6 –IN
1 2
–V 4 5 +IN
CC 2
IC3 : NJM4556AL
Dual OP-Amp
+ +
– –
1 2 3 4 5 6 7 8
IC6 : STK408-040E
3 Channels AF Power Amp
+
–
THERMAL CH.2
SENSOR
CH.3
+ +
– –
SUB CH.1
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
10