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35
HCD-GTX66/GTX77
HCD-GTX66/GTX77
6-5. BLOCK DIAGRAM — AMP SECTION —
MUTING
Q604, 606, 610
F-R
DBFB F/B
F-L
12
OVER LOAD
DETECT
Q668, 618
+
+
+
MUTE
Q640, 641
MUTE
CONTROL
Q634,682,684
RELAY DRIVE
Q644, 647
+
-
-
+
FRONT SPEAKER
L
R
PHONES
J1101
RY646
FAN MOTOR
DRIVE
Q579, 585
DC FAN
M891
M
FAN CONTROL
SWITCH
Q584
FAN DETECT
Q580–582
TH629
THERMAL
DETECT
Q628, 630
TM600
D624
D550
• SIGNAL PATH
POWER AMP
IC601
TH630
VL(AC)
OVER CURRENT
PROTECTOR
IC550
UNDER VOLTAGE
DETECT SWITCH
Q506
OVERLOAD
DETECT
SWITCH
Q648
FAN CONTROL
HI SPEED
SWITCH
Q581
• R-CH is omitted due to same as L-CH.
: AUDIO
w w w . x i a o y u 1 6 3 . c o m
Q Q 3 7 6 3 1 5 1 5 0
9
9
2
8
9
4
2
9
8
T E L
1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299