Yamaha CRX-E150 Service Manual page 38

A B
CRX-E150
SCHEMATIC DIAGRAM (MAIN)
1
Q Q
3 7 6 3 1 5 1 5 0
VOLTAGE SELECTOR
240V 1-2/5-6
220V 2-3/6-7
110V 3-4/7-8
120V 4-5/8-1
2
3
4
IC402: NJM78M15FA T E
L 1 3 9 4 2 2 9 6 5 1 3
Voltage Regulator
INPUT
5
OUTPUT
COMMON
IC403: NJM79M15FA
Voltage Regulator
COMMON
6
OUTPUT
INPUT
IC601: M5237L
Regulator
INPUT 1
ASO
Protection
Starter
Circuit
7 Sudden Current
Protection
Overheat
Protection
OUTPUT
– 3
Standard Amp.
+
Voltage
2
GND
w w w
8
PIN CONNECTION DIAGRAM OF TRANSISTORS, DIODES AND ICS.
2SA893A 2SA1317 2SB1565 2SA1693 2SA1708 1SS133
2SA970 2SC1740S 2SD2396 2SC4466 2SC4488 1SS270A
2SC1815 2SC3330 1SR139
2SC1890A HZS5B2TD
2SC2229 HZS6A3
2SC2240 HZS12A2TD
2SC2878 HZS152TD
HZS302TD
B
C
E E
C B E
C B B C B
E C E
9 E-45/J-41
C D E
TO MAIN (2)
E-45/J-41
L5
TO MAIN (1)
E-45/J-41
J3
TO OPERATION E-43/J-39
FROM CD E-44/J-40
I4 D8
CD
0
5.1
2.6
0
0
-14.8
MUTING
-14.8
0 0
FROM INPUT (3) E-42/J-38
I7
x a o
. i
D3SBA20 M5237L NJM78M15FA NJM79M15FA
Anode
–
OUT 3: IN 3: COM
~
1: OUT 1: OUT
~ IN
COM 2: COM 2: IN
Cathode +
F G
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SUB POWER SUPPLY
11.5
11.5
14.9 29.4
0
0
FROM MAIN (1)
11.5
E-45/J-41
J4
0
0.7
0
-15.0 -29.7 0
0
-30.9
-48.7
-62.7 -29.7
-30.4 -63.2
14.9
14.4
0
14.4
0
14.4
-0.1
0
-0.7
0 0
29.5
29.4
0
28.8
0.7 5.1
1.3
1.3 29.4
0
Q Q MUTE
-14.7 3 7
-15.0 DRIVE
29.5
29.4
29.5 29.5
0
-1.1 1.1 29.3
0
0.5 0
0.5
0
-0.5
-1.1
0.6 0.6
0 0
0
-28.4 -29.4
0
-0.6
-0.6
-29.7 0
-1.1
-1.1
-29.7
-28.4
-29.0
POWER AMP
-29.0
-29.7
-28.4
-1.1
-1.1 -29.7
0
-0.6
-0.6
0
-28.4 0
-28.4
0 0 -1.1
0.6 0.6
0
-0.5
0 0
1.1 0.5
29.3
1.1 0.5
29.5
29.5
u 1 6 3
y
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H I
2 4
8 9
5.4
AC
11.6
5.5
0 5.4
0 5.4
MAIN POWER SUPPLY
29.5
0 0
-29.7
RELAY
5.1
2.3
DRIVE
1.6
6 3 1 5 1 5 0 8
4.9 10.3
5.4
5.4
PROTECTION
0
29.2
0
0
0
0 0
0.8
0
0
0.8
29.4 28.7
MUTING
m
c o
.
J K
2
9 8 9 9
AC
4.3
TO MAIN (2)
E-45/J-41
AC
9.5 L5
TO MAIN (4)
AC E-45/J-41
44.5
E2
x: NOT USED
O: USED / APPLICABLE
TO CD E-44/J-40
J3
9 2 4 9 8 2 9 9
10.4 5.2
10.4
5.1
10.4 5.2
1.3 9.9
0 5.1
0
0 5.1
All voltage are measured with a 10MΩ /V DC electric volt meter.
Components having special characteristics are marked s and must be replaced
with parts having specifications equal to those originally installed.
Schematic diagram is subject to change without notice.
L