Sony STR-DB2000 - Block Diagram - Power Section

STR-DA2000ES/DB2000
2525
6-10. BLOCK DIAGRAM – POWER Section –
75
VOL-DC
+5V
–5V
+12V
+3.3VB
+5VB
–12V
+7V
13
Q908
VOL-SW
V POWER
DRIVER
Q101, 102
ERROR AMP
IC103
+6V REGULATOR
Q202
V+B
DISCHARGE
Q909
+
BUFFER
Q01, 905, 906
D102
D008
D101
RECT
ISOLATOR
PC002
ISOLATOR
PC001
SWITCHING
Q001, 002
8CS
3
2
IS
5 OUT
6 VCC
FB
D001
RECT
D009
RECT
D302, 303
RECT
ISOLATOR
PC004
ISOLATOR
PC004
Q003
TH001
D405
D202
RECT
D013
RECT
D021
RECT
D014, 019
RECT
D201
RECT
D401
RECT
D404
V+12V
V–9V
D301
RECT
SWITCHING
Q004
CS
2
IS
5 OUT
6 VCC
FB
SWITCHING REGULATOR
IC002
D010
RECT
TH002
8
3
Q005
D022
D015 – 018
RECT
ISOLATOR
PC005
+12V
REGULATOR
IC201
–9V
REGULATOR
IC202
–12V
REGULATOR
IC302
+5V DSP
+2.6V DSP
+3.3V DSP
+5V
REGULATOR
IC910
+3.3V
REGULATOR
IC909
+7V
REGULATOR
IC905
+5V
REGULATOR
IC904
–5V
REGULATOR
IC906
2
34
1
5
6
B+ SWITCH
Q913
B+/B– SWITCH
IC913
VOL-DC AMP
IC903
–10V
A+5V
–10V
D402
ISOLATOR
PC006
SWITCHING
REGULATOR
IC003
POWER ON/OFF
RELAY DRIVE
Q401
POW RY
POW CHG
STOP
+3.3V
REGULATOR
IC911
–10V
REGULATOR
IC662
+5V
REGULATOR
IC912
+10V
REGULATOR
IC661
T001
POWER
TRANSFORMER
T002
POWER
TRANSFORMER
T003
POWER
TRANSFORMER
SWITCHING REGULATOR
IC001
SHUNT
REGULATOR
IC101
SHUNT
REGULATOR
IC301
SHUNT
REGULATOR
IC401
L010
RL001
L002 L001
(Page 18)
O
(Page 20)
W
(Page19)
R
ISOLATOR
PC007
(AC IN)
ISOLATOR
PC008
+B SWITCH
Q904
+5V
REGULATOR
IC691
TUN+3.3V
+3.3V
REGULATOR
IC2016
B– SWITCH
Q911
POWER CONTROL
SWITCH
Q912
(AEP, UK)
+2.6V
REGULATOR
IC2206
V+5V
+5V
REGULATOR
IC1852
V+9V
V+3.3V
+3.3V
REGULATOR
IC1853
+9V
REGULATOR
IC1851
SWITCHING
Q914