Yamaha EMX66M Service Manual page 51

A B
EMX66M
EMX66M OVERALL CIRCUIT DIAGRAM 7/7 (PWR 1/4, PWR 2/4, PWR 3/4, PWR 4/4)
PWR 1/4
Common
PWR 4/4
POWER
ON / OFF
PWR 3/4
AC IN
1
to Power Transformer
EMX66M
C
Power
Transformer
PWR 2/4
2 BRIDGE 1 2
A B
SPEAKERS
D E
REGULATOR +15V
REGULATOR -15V
to FAN Assembly
PWR1/4: 38CC1-8822388-2
PWR2/4: 38CC1-8822388-2
PWR3/4: 38CC1-8822388-2
PWR4/4: 38CC1-8822388-2
F G
REGULATOR +5V
WARNING
Components having special characteristics are maked
must be replaced with parts having specification equal to those originally installed.
1
1
1
Note: See parts list for details of circuit board component parts.
1
H
<P.7>
EMX66M
1
NJM7815FA(XD853A00) D8LD40 (VR149700)
REGULATOR +15V DIODE STACK 8.0A 400V
PWR1/4: IC101 PWR1/4: D147,151
3
2
1
1: OUTPUT 1
2
2: COMMON 3
3: INPUT
NJM7915FA(XD854A00) FMX-22S (VS135800)
REGULATOR -15V DIODE STACK 10.0A 200V
PWR1/4: IC102
PWR1/4: D155,156
3
2 1
1: OUTPUT 1
2
2: INPUT 3
3: COMMON
2
NJM7805FA(XJ607A00)
1N4004L (VU801600)
REGULATOR +5V
DIODE PWR1/4: 120-121,126,
PWR1/4: IC103 140-143,145-146,
148-150,152,154,157
1
3
2
1
2
1: OUTPUT
2: COMMON 1: ANODE
2: CATHODE
3: INPUT
RBV-1306 (V2261600) MTZ J 8.2B 8.2V (VG438900)
ZENER DIODE
DIODE STACK 13.0A 600V
PWR1/4: D144
PWR1/4: D153
1
2
1: ANODE
2: CATHODE
1SS133, 1SS176, HSS104
(VD631600)
DIODE
PWR1/4: D101-108,112-113,
122-125,128,131-132,139
3
1
2
1: ANODE
2: CATHODE
to Power Transformer
4
Not Install
Install
Not Install
5
and
EMX66M