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HCD-GTR88
HCD-GTR88
19
19
6-3.
BLOCK DIAGRAM -
AMP
Section -
R
L
SW PREAMP
IC255
7
5
SW PREAMP
IC254
7
5
SW PREAMP
IC253
7
5
FR PREAMP
IC252
POWER
AMP
IC1300
IC800
AMP
POWER
MUTING
Q270
OVER LOAD
DETECT
Q1301
OVER LOAD
DETECT
Q1300
OVER LOAD
DETECT
Q850
OVER LOAD
DETECT
Q800
R-CH
MUTING
Q245
MUTING
CONTROL
Q290
MUTE
Q1309, Q1308
LINE MUTE
63
STK MUTE
PROTECT
CONTROL
FAN HIGH SPEED
60
16
15
11
6
4
18
11
SW SPK RELAY
48
FAN MOT
OR
DRIVE
Q602
R
Y1300
+
–
–
+
R
Y862
D1036
TH1301
M
M101
(DC F
AN)
M
M101
(DC F
AN)
PHONES
SUBWOOFER
RELA
Y
DRIVE
Q031
FR SPK RELAY
43
RELA
Y
DRIVER
Q032
FAN SW
Q600
R-CH
J702
SYSTEM CONTROLLER
IC401 (3/4)
: AUDIO
SIGNAL
P
A
TH
R-CH is omitted due to same as L-CH.
DC
DETECT
Q1302, Q1303
THERMAL
DETECT
OR
Q1305, Q1307
R
L
FRONT
SPEAKER
TB1300
+
–
–
+
R
L
SA
TELLITE
SPEAKER
TB1301
59
BASS AGC
HP
DET
OUT
SW OUT
RELA
Y
DRIVER
Q030
MUTING
Q220
14
8
C
(Page 18)
F
(Page 18)
D
(Page 18)
E
(Page 18)
+
–
+
–
TB801
H
61
1
3
MUTING
Q295
PROTECT
DETECT
Q1304, 1306
(Page 20)
R-CH
R-CH
R-CH
R-CH
R-CH
RELA
Y
DRIVER
Q033