Sony HCD-GX570 - Cd Deck Receiver Component - Block Diagram - AMP Section

HCD-GX470/GX570
2525
HCD-GX470/GX570
7-3. BLOCK DIAGRAM – AMP Section –
OUT
BUFFER
IC251
E
BASS AGC
G
SW OUT
F
POWER AMP
IC441
MUTING
Q251
OVER LOAD
DETECT
Q441
OVER LOAD
DETECT
Q501
R-CH
MUTING
Q272
BUFFER
Q271
BUFFER
Q276
LINE AMP
Q277
STANDBY
SWITCH
Q489
DC DETECT
Q481, 482
+
+
TEMPERATURE
DETECT
Q483, 484
TEMPERATURE
DETECT
Q503, 507
R-CH
R-CH
R-CH
TH441
+
++
POWER AMP
IC501
MUTING
CONTROL SWITCH
Q261
O-SYS-XMUTE
21
O-STK-MUTE
5
I-PROTECTOR
64
O-SWR
22
+
R-CH
PROTECTOR
Q485
RELAY DRIVE
Q486, 488
+
PROTECT
DETECT
Q487
FAN MOTOR
DRIVE
Q043 – 045
FAN MOTOR
DETECT
Q046
RY441
C
HP IN
H
PROTECT
–1
–2
R
L
+
–
–
+
RELAY B+
RY501
D035
M
M001
(FAN)
SPEAKER
PHONES
JK441
+
–
SUB WOOFER OUT
JK501
RELAY DRIVE
Q502
SUB WOOFER
SWITCH
Q274
R-CH
J701
SYSTEM CONTROLLER
IC901 (3/4)
: TUNER (FM/AM)
SIGNAL PATH
R-ch is omitted due to same as L-ch.
DC DETECT
Q505, 506
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