56
56
HCD-GTX777/GTX787/GTX888
HCD-GTX777/GTX787/GTX888
123456789
1
0
1
1
1
4
1
5
12
13
A
B
C
D
E
F
G
H
I
J
6-24.
SCHEMA
TIC DIA
GRAM — SUBW
OOFER BO
ARD —
• Ref
er to pa
g
e
67 IC Bloc
k Dia
grams.
W
MAIN BOARD
(2/4)
NO105
(Page 46)
J
POWER
BOARD
NO632
(Page 54)
K
POWER
BOARD
NO631
(Page 54)
1
2
3
4
5
6
+
-
+
-
1
2
3
4
19
8
7
6
5
4
3
2
15
14
13
12
11
10
-PRE
-VCC
+VCC
+RE1
-RE1
+RE2
-RE2
+PRE
SUB
GND
IN1
NF1
ST-BY
NF2
IN2
1
2
3
4
5
6
7
8
-VL
SW PWR GND
+VL
SW R-GND
SW L-GND
SW PROTECT
DC DETECT
AC CUT DETECH
1
2
3
4
5
6
7
8
9
SW L-IN
SW A-GND
SW R-IN
STK MUTE
SW R
Y
SW RELA
Y
GND
UNREG
FA
N
-
FA
N
+
1
2
3
FA
N
+
M893
DC F
A
N
FA
N
-
SW L GND
SW R GND
SW R
SW L
22k
R890
2SC3906K-T146E
Q800
0.1
C804
0.1
C838
JW830
1k
R839
47k
R861
100k
R841
MC2838-T112-1
D800
50V
4.7
C850
50V
0.1
C888
50V
0.1
C889
MA2J1
110GLS0
D81
1
R
Y
862
63V
100
C825
63V
100
C826
50V
100p
C853
22k
R840
0.1
C839
TB001
SUBWOOFER
OUT
1/4W
1
R805
22k
R864
5W
0.22
R838
50V
4.7
C800
50V
100p
C803
100k
R891
1/4W
100
R827
10
R842
2SC3906K-T146E
Q850
5W
0.22
R888
1k
R889
JW880
C883 2200P
C833 2200P
56k
R860
1/4W
100
R828
10
R892
1/4W
1
R804
STK433-130-E
IC800
SUBWOOFER POWER
AMP
IC800
MA2J1
110GLS0
D812
Q815
2SC3052EF-T1-LEF
Q814
SUB WOOFER BOARD
2.2k
R863
470
R865
EXCEPT
MX
(GTX888)
22k
R866
68k
R808
68k
R858
68k
R851
68k
R801
5.6k
R814
JL001
JL003
JL004
JL005
JL006
JL007
JL008
JL009
JL010
JL012
JL013
JL014
JL015
JL016
JL017
JL018
JL019
JL020
JL021
JL022
JL023
JL024
JL025
JL027
JL028
JL029
JL030
JL031
JL032
8P
CN810
R867
100
9P
CN809
10V
47
C802
10V
47
C852
3P
CN81
1
560
R802
560
R852
560
R800
560
R850
0.68
C801
0.68
C851
2SC3052EF-T1-LEF
RELA
Y
RELA
Y
DRIVE
Q815
AC CUT
DETECT
OVER LOAD
DETECT
OVER LOAD
DETECT
IC B/D
C9
0.001
0.9
0.3
0.1
0.8
0
0
16.1
0
0
16.1
-50.4
-51.7
52
0000
50.7
0
-0.1
0.6
-0.1
-0.1
Summary of Contents for HCD-GTX777
Page 107: ...MEMO 107 HCD GTX888 GTX777 GTX787 ...