Daewoo DTC-14D9 series, Service Manual

Page: 40 / 54

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IC DESCRIPTION
TDA7442D
L-IN1
4
5
6 7
3
2 1
28
10
11
16
24
25
23
19
12
13
26 20 22 21
27
15
14
18
17
9
8
L-R
0.47
µ
F
SUPPLY
V
S
AGND
CREF
TREBLE
BASS
BIN(L)
MUTE
D01AU1248
I2
C
BUS
DECODER
+
L
ATCHES
SPKR
ATT
TREBLE
BASS
5.6nF
MUTE
SPKR ATT
SCL
SDA DIG
G
ND
ROUT
LOUT
22
µ
F
+
-
+
- +
R-IN4
0.47
µ
F
50K
PS1
90Hz
100nF
PS1
RPS1
SYMULATED
MUSIC
MUSIC/
SYMULATED
OFF
MIXING
AMP
LPF
9KHz
EFFECT
CONTROL
MIXING
AMP
1.2nF
LP
TREBLE-R
5.6nF
TREBLE-L
100nF
5.6K
100nF
BOUT(L)
100nF
100nF
5.6K
BIN(R)
BOUT(R)
79dB
CONTROL
+
-
+
-
79dB
CONTROL
50K
0.47
µ
F
50K
0.47
µ
F
50K
0.47
µ
F
50K
0.47
µ
F
50K
0.47
µ
F
50K
0.47
µ
F
50K
31.5dB
control
R-IN3 R-IN2 R-IN1
31.5dB
control
L-IN2 L-IN3
L-IN4
Vref
OFF
SURR
OFF
SURR
RB
FIX
FIX
VAR
RB
FIX
VAR
L+R
30K 30K
2.2
µ
F
2.2
µ
F
MUXOUT(R)
IN(R)
MUXOUT(L)
IN(L)
BLOCK DIAGRAM(TDA7442D)