Block Diagram - Main Section (2/2) - Sony HCD-XB66 Service Manual

7-5. BLOCK DIAGRAM – MAIN Section (2/2) –
• SIGNAL PATH
: CD PLAY
L-CH 1
POWER AMP
G
IC801 (1/2)
(Page 32)
17
POWER AMP
IC801 (2/2)
FEED BACK
H
(Page 32)
1
POWER AMP
R-CH
IC821 (1/2)
17
POWER AMP
IC821 (2/2)
STANDBY SWITCH
Q283
STK-MUTE
I
(Page 32)
05
10
13
6
OVER LOAD
+
DETECT
Q801, 851
D811
10
13
6
OVER LOAD
DETECT
Q821, 871
D831
OVER LOAD
DETECT SWITCH
Q282
RELAY SWITCH
Q281
– 33 –
-1
L-CH (+)
-1
L-CH (–)
-2
R-CH (+)
-2
R-CH (–)
RELAY DRIVE
Q141, 142
RY141
RY142
2
PROTECTOR
IC281
OFFSET
DETECT
VCC ON RELAY
FLIP
6
MUTE DRIVE
FLOP
OVER LOAD
1
DETECT
AC OFF
DETECT
4 7
J760
PHONES
+
TM131
L
–
SPEAKER
IMPEDANCE
USE 8 – 16Ω
+
R
–
FAN MOTOR
M
DRIVE
Q191, 192
M100
(FAN)
RELAY
J
(Page 32)
AC OFF
M
(Page 36)
– 34 –
HCD-XB66/XB660