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HCD-GT22/GT44/GT55
43
43
HCD-GT22/GT44/GT55
7-19. SCHEMATIC DIAGRAM – MIC Board –
0
0.6
4.6
4.5
4.6
4.5
4.5
4.5
9
4.7k
R802
E
ET801
100k
R803
100k
R804
10k
R805
10k
R806
100k
R807
1k
R808
47k
R809
100
R811
100k
R817
100
R816
0.1
C801
220p
C807
470p
C809
2SC3052EF-T1-LEF
Q801
16V
10
C802
16V
10
C808
50V
0.1
C810
16V
10
C814
1000p
C803
1000p
C806
16V
100
C811
0.1
C817
50V
2.2
C816
220k
R815
220p
C815
47p
C812
10k
R814
50V
2.2
C813
4.7k
R812
4.7k
R813
220k
R810
18k
R842
C821
0.1
C822
0.1
1000p
C823
1000p
C824
470k
R823
470k
R824
1k
R822
1k
R821
E
ET802
NJM4558V-TE2
IC801
1
NJM4558V-TE2
IC801
6
IC801
8
4
18k
R845
10k
R846
10k
R843
47k
R844
100k
R841
1k
R831
1k
R832
10V
220
C827
10
C828
L
R
J802
J803
4P
CN803
1
2
3
4
50k
RV801
1
2
3
4
5
5P
CN802
VBUS
D-
D+
GND
SHIELD
J801
0.022
C805
0.022
C804
SLR-342VC3F
D801
E
ET803
AUX-IN-LCH
HP_R-OUT
AUX-IN-RCH
MIC-SIG
O-MIC-DET
A-GND
MIC+9V
LED+9V
USB-LED-OUT
HP-GND
HP-GND
HP_L-OUT
D-GND
MIC BOARD
A
10
1
2
H
B
C
7
8
F
9
6
4
3
G
D
5
E
(CHASSIS)
1
13
(CHASSIS)
MIC AMP
IC801
MIC
LEVEL
MUTING
AUDIO
PHONES
MIC
(USB)
REC
(USB)