Block Diagram - Power Supply Section - Sony STR-DB798 Service Manual

STR-DB798
STR-DB798
6-6. BLOCK DIAGRAM – POWER SUPPLY Section –
MUTING +5V
TUNER +9V
TUNER +3.3V REGULATOR
(AEP, UK)
A+5V
V+5V REGULATOR
D+3.3V REGULATOR
+3.3V/+2.6V
+3.3V
LIMITER,OUT 119
REGULATOR
+2.6V
D.POWER 42
V.POWER 43
SYSTEM CONTROLLER
IC1703 (6/6)
STBY +3.3V
RESET SIGNAL
RSTX 55 GENERATOR
IC1602
SUB T 8
STOP 60
PW RY 1
+5V
REGULATOR
Q824
BIAS
LIMITER SWITCH
B–
Q2602
+3.3V +9V
BIAS
LIMITER SWITCH
REGULATOR
B+
Q2601, 2603
IC1905 IC1902
+24V (RY)
+5V +15V
REGULATOR REGULATOR
IC1403 IC955
+15V
– 15V
–15V
REGULATOR
IC954
–18V
FL –18V REGULATOR
Q903
+5V
B+ SWITCH
Q956, 957
IC952
D+5V
+3.3V
IC1903
+5V
B+ SWITCH
REGULATOR
Q1957, 1958
IC1901 IC1953
–5V
V–5V
REGULATOR
IC951
D909
+3.3V
REGULATOR
IC1904
18 18
(AEP, Taiwan)
S901
IMPEDANCE
SELECTOR
8Ω
T901
MAIN POWER
TRANSFORMER
4Ω
-1
B–
RECT
D914
-2
B+
RECT
D903 – 906
F1
FLUORESCENT
INDICATOR TUBE
(FL1603) F2
RECT
D912, 913,
915, 916
F904
D1908
RECT
D908
F903
B– SWITCH
Q953 – 955
T2
SUB POWER
TRANSFORMER
D52
RECT
D54 – 57
D53
B+ SWITCH RECT
Q52, 53 D58
AC POWER
DETECT
Q54
F1
J50
-AC IN
RY1
RELAY
DRIVE
Q51