HCD-GRX9000/RX900
7-5.
BLOCK DIAGRAM – MAIN Section (2/2) –
– 29 –
– 30 –
05
(Page 28)
L-CH
POWER AMP
IC821 (1/2)
OVER LOAD
DETECT
Q801, 851
OVER LOAD
DETECT SWITCH
Q432, 437
RELAY DRIVE
Q431
PROTECTOR
Q435, 436
FAN MOTOR
DRIVE
Q401, 402
R-CH
17
13
1
10
6
-1
-2
+
–
–
+
POWER AMP
IC821 (2/2)
STANDBY
SWITCH
Q575
J421
PHONES
TM401
SPEAKER
IMPEDANCE
USE 8 – 16
Ω
R
L
D811
D141
L-CH (+)
L-CH (–)
R-CH (+)
R-CH (–)
RY401
RY402
M401
(FAN)
-1
-2
POWER AMP
IC801 (1/2)
OVER LOAD
DETECT
Q821, 871
D831
D404
D409
D403
D408
17
13
1
10
6
POWER AMP
IC801 (2/2)
F
(Page 28)
FEED BACK
G
(Page 28)
STK-MUTE
H
(Page 28)
RELAY
I
+
M
• SIGNAL PATH
: TUNER (FM/AM)
DC DETECT
SWITCH
Q433, 434
TEMPERATURE
DETECT SWITCH
Q891, 892
THP891