Sony HCD-GTR77 - 6-3. BLOCK DIAGRAM - AMP Section -

HCD-GTR33/GTR55/GTR77
HCD-GTR33/GTR55/GTR77
1717
6-3. BLOCK DIAGRAM - AMP Section -
LINE AMP
IC252
POWER
AMP
IC800
MUTING
Q402
OVER LOAD
DETECT
Q801
OVER LOAD
DETECT
Q800
OVER LOAD
DETECT
Q802
R-CH
MUTING
Q430
LINE AMP
IC253
–1
–2
MUTING
CONTROL
Q670
LINE MUTE
58
STK MUTE
51
17
20 22
1913 10
SW SPK RELAY
52
FAN MOTOR
DRIVE
Q697, 699
RY800
+
–
–
+
RY500
D807
TH802
M
M101
(FAN)
PHONES
+
–
SUBWOOFER
SUBWOOFER
JK500
RELAY
DRIVE
Q500
FR SPK RELAY
53
PROTECT
50
RELAY
DRIVE
Q502
R-CH
J702
SYSTEM CONTROLLER
IC401 (3/4)
: 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
FAN ON/OFF
38
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
15
8
J
(Page 16)
F
(Page 16)
D
(Page 16)
E
(Page 16)
G
(Page 18)
+
–
+
–
JK501
H
(Page 18)