Read Sony HCD-XB66 / HCD-XB660 / LBT-XB66 / LBT-XB660 Service Manual online
– 33 –
– 34 –
HCD-XB66/XB660
7-5.
BLOCK DIAGRAM
– MAIN Section (2/2) –
1
4
7
2
05
(Page 32)
L-CH
POWER AMP
IC821 (1/2)
OVER LOAD
DETECT
Q801, 851
OVER LOAD
DETECT SWITCH
Q282
RELAY DRIVE
Q141, 142
FAN MOTOR
DRIVE
Q191, 192
OVER LOAD
DETECT
AC OFF
DETECT
OFFSET
DETECT
VCC ON
MUTE
RELAY
DRIVE
FLIP
FLOP
R-CH
17
13
1
10
6
PROTECTOR
IC281
-1
-2
+
–
–
–
+
POWER AMP
IC821 (2/2)
STANDBY SWITCH
Q283
RELAY SWITCH
Q281
J760
PHONES
TM131
SPEAKER
IMPEDANCE
USE 8 – 16
Ω
R
L
D811
L-CH (+)
L-CH (–)
R-CH (+)
R-CH (–)
RY141
RY142
M100
(FAN)
(FAN)
-1
-2
POWER AMP
IC801 (1/2)
OVER LOAD
DETECT
Q821, 871
D831
D191
D192
17
13
1
10
6
POWER AMP
IC801 (2/2)
G
(Page 32)
FEED BACK
H
(Page 32)
STK-MUTE
I
(Page 32)
RELAY
J
(Page 36)
AC OFF
+
6
M
M
• SIGNAL PATH
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