![background image](http://html.mh-extra.com/html/sony/hcd-xg100av/hcd-xg100av_service-manual_1329768021.webp)
HCD-XG100AV/XG900AV
21
21
PROTECT
SWITCH
Q804
RESET
SWITCH
Q801
POWER AMP
IC801
R-CH
EVER +5V
MUTING
Q113
OVER LOAD
DETECT
Q801, 851
TEMPERATURE
DETECT SWITCH
Q831, 832
DC DETECT
SWITCH
Q433, 434
TH831
R-CH
R-CH
+
+
OVER LOAD
DETECT SWITCH
Q432
PROTECT SWITCH
Q439
OVER LOAD
DETECT SWITCH
Q437
FRONT SPEAKER PROTECT
RELAY DRIVE
Q401, 402
STANDBY SWITCH
Q803, 804, 834
MUTING CONTROL
SWITCH
Q802, 803
MUTING CONTROL
SWITCH
Q833
HEADPHONE
MUTING
Q805, 855
D807
D401
RY401
RY402
J803
PHONES
SYSTEM CONTROLLER
(CD MECHANISM CONTROL)
IC501 (4/5)
27
F-RELAY
3
STK-POWER
1
HP MUTE 93
LINE-MUTE
RESET
6
12
AC-CUT 22
HP-IN 36
REAR-RELAY
4
PROTECT
• SIGNAL PATH
: AUDIO
• R-ch is omitted due to same as L-ch.
N
(Page 22)
RESET
(XG100AV)
RESET SIGNAL
GENERATOR
IC801
PROTECT SWITCH
Q431
L IN
G
(Page 20)
SW-MUTING
J
(Page 20)
TA-MUTING
FEED
BACK
M
(Page 20)
SL
L
(Page 20)
C
R-CH
K
(Page 20)
H
(Page 20)
R-CH
–1
–2
TM401
L
R
+
–
–
+
FRONT SPEAKER
IMPEDANCE
USE 6 – 16
Ω
R-CH
L
R
+
–
–
+
–
+
+
–1
–2
+
+
M901
(FAN)
FAN MOTOR
DRIVE
Q961, 962
M
+
+
+
REAR (L-CH) /CENTER
SPEAKER PROTECT
RELAY DRIVE
Q403, 407
REAR (L-CH)
SPEAKER PROTECT
RELAY DRIVE
Q404, 406
RY403
OVER LOAD
DETECT
Q101, 181
OVER LOAD
DETECT
Q151
D410
SURROUND
SPEAKER
IMPEDANCE
USE 8 – 16
Ω
TM402
POWER AMP
IC101
REAR
CENTER
7-4.
BLOCK DIAGRAM – MAIN Section (2/2) –