-63-
IC BLOCK DIAGRAM -2/2
IC, LB1645N
1
5
3
2
8
9
7
4
Input logic circait
Pre-driver
6
10
P1
P2
OUT1
OUT2
Vcc1
Vcc1
VZ
IN2
IN1
GND
IC, LC72131D-N
IC, BD3882FV
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
20k
RECOUT
-L
RECIN-L
RECIN-R
RECOUT
-R
TUNER-R
TUNER-L
A
UX-R
A
UX-L
CD-R
CD-L
R
VF IL-R
R
VF IL-L
OUT
-L
OUT
-R
BAS2-L
BAS1-L
BAS2-R
BAS1-R
MID2-R
MID1-R
TRE1-L
M-GND
V
OL IN-R
TRE2-L
TRE1-R
TRE2-R
MID1-L
MID2-L
VDD
SI
SC
VEE
TREBLE
TREBLE
MIDDEL
Logic Control
MIDDEL
FRONT
VOLUME
REAR
VOLUME
REAR
VOLUME
BASS
BASS
39
40
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9
2
8
9
4
2
9
8
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9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
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