Power Section - Sony STR-W555 Service Manual

STR-W555
– POWER SECTION –
VIDEO
S/W
LIN
MUTE
L-CH
Q181
TA MUTE
C
MAIN
SECTION
(Page 17)
MUTE
SWITCH
POWER ON/OFF
Q853
D852,853
B
MAIN
SECTION
(Page 17)
AC1
AC2
VF1
VF2
09
R-CH
POWER AMP
IC901
RY751
20 15
8
OVER LOAD
DET
Q952
R-CH
OVER LOAD
PROTECTOR
SWITCH
IC851
Q851 2
1
VCC ON
PROTECTOR
MUTE
4
MUTE
SWITCH
Q901
7
– 19 –
D751
D761
R-CH
6
J755
PHONES
Rch
POWER ON
MUTE
Q852
RY781
R-CH
ST+10V
RECT
ST+10V
3 REG 1
D810,811
IC804
+
UNREG RECT
+12V D805-808
–
+
+7V REG
+7V 1
3 RECT
IC801
D801
–
+5.6V REG
+5.6V
3 1 RECT
IC803
D802, 803
D813
+5V
M901 FAN MOTOR AC1
M REG
FAN
Q731,732 AC2
MOTOR
VF1
VF2
-7V REG
-7V 3 2
IC802
+B
-B
VG REG
VG
Q801
• R CH : Same as L ch
• SIGNAL PATH
: FM
:VIDEO (AV INPUT)
• Abbreviation
EA3 : Saudi Arabia model.
SP : Singapore model.
MY : Malaysia model.
JE :Tourist model.
TW :Taiwan model.
AR :Argertine model.
– 20 –
J781
MONITOR
OUT
TB751
FRONT
SPEAKER
L
TB201
REAR
SPEAKER
R
T901
POWER
TRANSFORMER
AC
IN
VOLTAGE
SELECTOR
S871
E,EA3,SP,MY,AR,TW,JE