Block Diagram - Amp Section - Sony HCD-GX570 - Cd Deck Receiver Component Service Manual

7-3. BLOCK DIAGRAM – AMP Section –
BASS AGC
(Page 24) G
OUT
BUFFER
E
(Page 24)
IC251
MUTING
Q251
R-CH
SW OUT BUFFER LINE AMP
(Page 24) F
Q276 Q277
MUTING
CONTROL SWITCH
Q261
21
HCD-GX470/GX570
+
POWER AMP
IC441
STANDBY
SWITCH
Q489
TH441
OVER LOAD TEMPERATURE
DC DETECT
DETECT DETECT
Q481, 482
Q441 Q483, 484
+
R-CH
+ +
+ +
TEMPERATURE OVER LOAD
DC DETECT
DETECT DETECT
Q505, 506
Q503, 507 Q501
BUFFER POWER AMP
Q271 IC501
MUTING
Q272
5
SYSTEM CONTROLLER
IC901 (3/4)
R-CH
–1
–2
R-CH
RY441
RELAY B+
FAN MOTOR
R-CH DRIVE
Q043 – 045
D035
PROTECTOR RELAY DRIVE
Q485 Q486, 488
PROTECT
+
DETECT
Q487
RY501
RELAY DRIVE
Q502
SUB WOOFER
SWITCH
Q274
64 22
25 25
HP IN
(Page 24)
C
J701
PHONES
R-CH
JK441
+
L
–
SPEAKER
–
R
+
M001
M
(FAN)
FAN MOTOR
DETECT
Q046
JK501
+
SUB WOOFER OUT
–
PROTECT
H (Page 26)
R-ch is omitted due to same as L-ch.
SIGNAL PATH
: TUNER (FM/AM)
HCD-GX470/GX570