47
HCD-HX3/HX5/HX7
– MAIN Board –
IC302 PST3629NR
VDD 2
OUT 1
GND 3
+
–
VREF
CD
5
NC
4
IC303, 310 MC14052BDTR2
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
2Y0
1Y2
VCC
1Y1
1-COM
1Y0
1Y3
A
B
GND
GND
INH
2Y1
2Y3
2-COM
2Y2
IC304 R2S15904SP
24
23
22
MCU
I/F
TONE CONTROL
L-CH BASS/TREBLE
SURROUND
21
20
25
26
27
28
INR4
LOUT
ROUT
AGND
VCC
REFIN
DATA
CLK
DGND
TRER
TREL
NC
BASSL2
NC
INR3
INPUT
SELECTOR
INPUT
SELECTOR
INPUT GAIN
CONTROL
INPUT GAIN
CONTROL
MUTE
MUTE
REF
MODE
SELECTOR
VOLUME
VOLUME
INR2
INR1
INL1
INL2
INL3
INL4
IGOUTL
VOLINL
IGOUTR
VOLINR
BASSR1
BASSL1
BASSR2
19
18
17
16
15
1
2
3
5
6
7
8
9
4
10
11
12
13
14
TONE CONTROL
R-CH BASS/TREBLE