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HCD-GNX60/GNX70/GX9900
Q Q
3 7 6 3 1 5 1 5 0
7-5. BLOCK DIAGRAM
– AMP SECTION –
MAIN
SECTION
(Page 29)
T E
L
1 3 9 4 2 2 9 6 5 1 3
w w w
HCD-GNX60/GNX70/GX9900
POWER AMP
F-L
18
H
F-R
14
Q604, 606, 610
STK MUTE
CT
4
OUT
3
78
70
x
a o
.
i
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MAIN
DBFB F/B
SECTION
G
(Page 29)
IC600
D624
11
10
+
+
8
9
12
OVER LOAD
DETECT
MUTING
TH629
Q668, 618
THERMAL
DETECT
Q628, 630
VP
DC DET
2
D550
OVER
OCP
1
LOAD
IC550
OVER CURRENT
PROTECTOR
Q
Q
3
7
TH630
THERMAL
DETECT
Q629
52
SYSTEM CONTROLLER
IC401 (4/5)
u 1 6 3
y
30
30
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8
9
2
4
9
+
RY646
MUTING
RELAY DRIVE
Q640, 641
Q644, 647
MUTING
CONTROL
Q634,682
Q648
FAN DET
FAN-ON
FAN-K
HP-MUTE
6
3
1
5
1
5
0
8
9
Q506
E2, E3, E51
61
77
75
36
76
100
m
c o
.
8
2
9
9
J1103
PHONES
TM600
+
L
-
FRONT SPEAKER
+
R
-
GNX70/GX9900
TM601
+
L
-
SURR SPEAKER
+
R
-
RY665
RELAY DRIVE
Q666
FAN MOTOR
M891
M
DRIVE
DC FAN
Q580,581,584
Q583
FAN-CTL
DISPLAY
I
SECTION
(Page 31)
VL(AC)
DISPLAY
J
SECTION
(Page 31)
2
4
9
8
2
9
9
• SIGNAL PATH
: FM
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