Sony STR-DB790 - Block Diagram - POWER SUPPLY Section

STR-DA1000ES/DB790
2424
6-6. BLOCK DIAGRAM – POWER SUPPLY Section –
+5V
REGULATOR
Q824
+5V
+10V
REGULATOR
IC1902
TUNER +10V
+3.3V
REGULATOR
IC1905
TUNER +3.3V
+5V
REGULATOR
IC1403
A+5V
+5V
REGULATOR
IC952
V+5V
+3.3V
REGULATOR
IC1903
+3.3V/+2.5V
REGULATOR
IC1901
+3.3V
D+3.3V
+3.3V
REGULATOR
IC1904
RECT
D54 – 57
D52
D53
T2
SUB POWER
TRANSFORMER
SYSTEM CONTROLLER
IC1601 (6/6)
AC POWER
DETECT
Q54
–5V
REGULATOR
IC951
V–5V
F1
F2
FLUORESCENT
INDICATOR TUBE
(FL1603)
–28V
BIAS
B–
BIAS
B+
– 15V
+15V
+15V
REGULATOR
IC955
-2
-1
8Ω
4Ω
IMPEDANCE
SELECTOR
S901
T901
MAIN POWER
TRANSFORMER
24D-POWER
47LIMITTER
26V-POWER
77RSTX
48STOP
66POWER RELAY
B+ SWITCH
Q956, 957
STBY +3.3V
RESET SIGNAL
GENERATOR
IC1602
+5V
REGULATOR
IC953
RECT
D908
F904
F903
RECT
D914
F1
RELAY
DRIVE
Q51
RY1
(AC IN)
(DB790: TW)
(DA1000ES/DB790: SP, MY)
(DA1000ES/DB790: SP, MY, TW)
AC OUTLET
CNJ1
B+ SWITCH
Q958, 959
(DB790: AEP, UK)
(DB790)
F2
• Abbrivation
MY : Malaysia model
SP : Singapore model
TW : Taiwan model
D909
B– SWITCH
Q953 – 955
B+ SWITCH
Q52, 53, 55
+2.5V
D+5V
–28V
REGULATOR
Q903
RECT
D912, 913,
915, 916
LIMITER SWITCH
Q2601, 2603
THERMAL DETECT
Q960 – 962
THP901
LIMITER SWITCH
Q2602
B–
+24V (RY)
B+
– 15V
REGULATOR
IC954
RECT
D903 – 906
Ver 1.3
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