LG LX-D2640 Service Manual page 17

MAIN PART
1. FUNCTION IC TDA7468D
Pin NO. Symbol
1 VDD
2 MIC
3 IN-L1
4 IN-L2
5 IN-L3
6 IN-L4
7 MUX-L
8 IS-L
9 TREBLE-L
10 BASS I-L
11 BASS O-L
12 OUT-L
13 DGND
14 SCL
15 SDA
16 ALC
17 OUT-R
18 BASS O-R
19 BASS I-R
20 TREBLE-R
21 IS-R
22 MUX-R
23 IN-R4
24 IN-R3
25 IN-R2
26 IN-R1
27 CREF
28 GND
2. NJM2267M IC605
1 Vin 1
2 GND
3 Vsag 1
4 Vout 1
5 Vout 2
6 Vsag 2
7 VCC
8 Vin2
3. TC4052 IC603
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
IC601
Description
DC +9V DC 11V
MIC MIC signal input PORT.
TAPE-L TAPE L-CH signal input PORT.
TUNER-L TUNER L-CH signal input PORT.
AUX-L AUX L-CH signal input PORT.
CD-L CD L-CH signal input PORT.
MUX-L L-CH REC signal output PORT.
IS-L L-CH SURROUND signal input PORT.
TREBLE-L L-CH TREBLE driving external constant PORT.
BASS I-L L-CH BASS driving external constant PORT.
BASS O-L L-CH BASS driving external constant PORT.
OUT-L Function IC L-CH finer OUTPUT PORT.
DGND DGND
SCL CLOCK signal input PORT.
SDA DATA signal input PORT.
ALC ALC TIMING driving external constant PORT.
OUT-R Function IC R-CH finer OUTPUT PORT.
BASS O-R R-CH BASS driving external constant PORT.
BASS I-R R-CH BASS driving external constant PORT.
TREBLE-R R-CH TREBLE driving external constant PORT.
IS-R R-CH SURROUND signal input PORT.
MUX-R R-CH REC signal output PORT.
CD-R R-CH CD signal input PORT.
AUX-R R-CH AUX signal input PORT.
TUNER-R R-CH TUNER signal input PORT.
TAPE-R R-CH TAPE signal input PORT.
CREF Repple Rejection Capacitor connected PORT.
GND GND
- Input Clamp Terminal
GND GND
- SAG Correction
- Video Output1
Vout 2 Video Output1
Vsag 2 SAG Correction
VCC Supply Voltage
Vin2 Input Clamp Terminal
AUX1_R AUX1SIGNAL _ R-CH INPUT PORT.
GND GND
OUT_1 AUXSIGNAL _ R-CH OUTPUT PORT.
GND GND
AUX2_R AUX2SIGNAL _ R-CH INPUT PORT.
GND GND
VSS DC -6V
GND GND
GND GND
AUX1/2 MICOM CONTROL PORT.
GND GND
AUX1_L AUX1SIGNAL _ L-CH INPUT PORT.
OUT_L AUXSIGNAL _ L-CH OUTPUT PORT.
AUX2_L AUX2SIGNAL _ L-CH INPUT PORT.
GND GND
VDD DC +6V
- 2-10 -
(V) Remarks
10
5 I
5 I
5 I
5 I
5 I
5 O
5 I
5 O
5 I
5 O
5 O
0
0 I
0 I
5 O
5 O
5 O
5 I
5 O
5 I
5 O
5 I
5 I
5 I
5 I
5 -
0
1.9
0
1.6
1.5
1.5
1.6
4.9
1.9
0
0
0
0
0
0
-6
0
0
0
0
0
0
0
0
5.9