![background image](http://html.mh-extra.com/html/sony/hcd-gtr33/hcd-gtr33_service-manual_420750017.webp)
HCD-GTR33/GTR55/GTR77
HCD-GTR33/GTR55/GTR77
17
17
6-3. BLOCK DIAGRAM - AMP Section -
MUTING
Q402
OVER LOAD
DETECT
Q801
OVER LOAD
DETECT
Q800
OVER LOAD
DETECT
Q802
R-CH
MUTING
Q430
–1
–2
MUTING
CONTROL
Q670
FAN MOTOR
DRIVE
Q697, 699
RY800
+
–
–
+
RY500
D807
TH802
M
M101
(FAN)
PHONES
+
–
SUBWOOFER
SUBWOOFER
JK500
RELAY
DRIVE
Q500
RELAY
DRIVE
Q502
R-CH
J702
: AUDIO
SIGNAL PATH
R-ch is omitted due to same as L-ch.
DC
DETECT
Q803, 806
THERMAL
DETECTOR
Q807, 808
R
L
FRONT
SPEAKER
JK800
+
–
–
+
R
L
SATELLITE
SPEAKER
JK801
BASS AGC
HP DET
OUT
SW OUT
BUFFER
Q431
AC CUT
DETECT
Q501
PROTECT DETECT
Q809, 811
AC DETECT
PROTECT
(GTR77)
(GTR77)
(GTR33/55)
MUTING
Q425
+
–
+
–
JK501