Read Sony STR-DA2ES / STR-DB1080 Service Manual online
18
18
STR-DA2ES/DB1080
6-6.
BLOCK DIAGRAM – POWER SUPPLY Section –
+5V
REGULATOR
Q824
+5V
+10V
REGULATOR
IC1301
TUNER +10V
+3.3V
REGULATOR
IC1302
TUNER +3.3V
+5V
REGULATOR
IC1808
A+5V
+5V
REGULATOR
IC1801
VIDEO +5V
+3.3V
REGULATOR
IC1802
+5V
REGULATOR
IC1807
+3.3V
REGULATOR
IC1806
TRX +3.3V
+2.6V
REGULATOR
IC1805
D+2.6V
D+3.3V
D1803
D909
+3.3V
REGULATOR
IC1804
+5V
REGULATOR
IC1803
STBY +5V
RECT
D54 – 57
D58
D52
D53
T2
SUB POWER
TRANSFORMER
SYSTEM
CONTROLLER
IC1703
(7/7)
AC POWER
DETECT
Q54
– 5V
REGULATOR
Q902
VIDEO – 5V
F1
F2
FLUORESCENT INDICATOR TUBE
(FL1001)
+32V
+32V
REGULATOR
Q903
RECT
D912, 913
– 15V
REGULATOR
IC802
– 15V
+15V
+15V
REGULATOR
IC801
RELAY +24
B+
B–
-2
-1
8Ω
4Ω
IMPEDANCE
SELECTOR
S901
T901
MAIN POWER
TRANSFORMER
42
D POWER
43
V POWER
55
RSTX
49
SUB T. PORT
60
STOP
18
POWER RY
B+ SWITCH
Q1801, 1802
+7V
REGULATOR
IC1809
+7V
B+ SWITCH
Q1805, 1806
B+ SWITCH
Q1803, 1804
B+ SWITCH
Q1810
STBY +3.3V
RESET SIGNAL
GENERATOR
IC1702
B+ SWITCH
Q52, 53
RECT
D903 – 906
RECT
D908
D908
F904
F903
RECT
D914
D914
F1
F49
VOLTAGE
SELECTOR
VS49 (1/2)
VS49 (1/2)
VOLTAGE
SELECTOR
VS49 (2/2)
VS49 (2/2)
(EXCEPT DB1080: E)
(DB1080: E)
(DB1080: E)
RELAY
DRIVE
Q51
RY1
(AC IN)
(DB1080: E)
(EXCEPT DB1080: E, Korean)
(DA2ES/DB1080: E)
(EXCEPT DB1080: Korean)
AC OUTLET
CNJ1
D+5V
REGULATOR
CONTROL
SWITCH
Q904, 905
B+ SWITCH
Q1811, 1812
(DB1080: AEP, UK)
(DA2ES)
F2
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