LG LX-D2640 Service Manual page 20

4. MICOM EXPENDER IC BU2090 (IC501)
Pin NO. Symbol
1 VSS
2 DATA
3 CLK
4 Q0
5 Q1
6 Q2
7 Q3
8 Q4
9 Q5
10 Q6
11 Q7
12 Q8
13 Q9
14 Q10
15 Q11
16 VDD
AMP PCB
1.MAIN POWER IC STK403-070 IC702
Pin NO. Symbol
1 -Vcc
2 +Vcc
3 OUT
4 OUT
5 OUT
6 OUT
7 +PRE
8 SUB
9 GND
10 IN1
11 IN1F
12 ST/BY
13 IN2F
14 IN2
2.MAIN POWER IC STK403-240 IC701
Pin NO. Symbol
1 -Vcc
2 +Vcc
3 OUT
4 OUT
5 OUT
6 OUT
7 +PRE
8 SUB
9 GND
10 IN1
11 IN1F
12 ST/BY
13 IN2F
14 IN2
15 IN2
Description
VSS GND.
DATA u-COM IC DATASIGNAL Recive.
CLK u-COM IC CLKSIGNAL Recive.
DOOR_OPEN
DOOR_CLOSE
- -
SOL DECK Solenoid CONTROL.
MOTOR DECK MOTOR CONTROL.
REC_MUTE REC Signal Mute Control.
PB_MUTE Playback Mute Control.
REC_BIAS REC BIAS Power Control.
REC_BEAT REC BEAT Rejection Control.
- -
PWR_LED_OFF DECK FRONT LED PWR-OFF
PWR_LED_ON DECK FRONT LED PWR-ON
VDD +5V
Description
-Vcc -Vcc
+Vcc +Vcc
OUTPUT L L-CH OUTPUT PORT.
OUTPUT L L-CH OUTPUT PORT.
OUTPUT R R-CH OUTPUT PORT.
OUTPUT R R-CH OUTPUT PORT.
+PRE PRE AMP Vcc
SUB GND
GND GND
INPUT L L-CH INPUT PORT.
L FEED L-CH FEED BACK signal input PORT.
ST/BY MUTE/STBY Control PORT.
R FEED R-CH FEED BACK signal input PORT.
INPUT R R-CH INPUT PORT.
Description
-Vcc -Vcc
+Vcc +Vcc
OUTPUT L L-CH OUTPUT PORT.
OUTPUT L L-CH OUTPUT PORT.
OUTPUT R R-CH OUTPUT PORT.
OUTPUT R R-CH OUTPUT PORT.
+PRE PRE AMP Vcc
SUB GND
GND GND
INPUT L L-CH INPUT PORT.
L FEED L-CH FEED BACK signal input PORT.
ST/BY MUTE/STBY Control PORT.
R FEED R-CH FEED BACK signal input PORT.
INPUT R R-CH INPUT PORT.
INPUT R R-CH INPUT PORT.
- 2-13 -
(V) Remarks
0
0
0
0
0
0
0
4.9
2.8
0
0
0
0
0
3.7
4.9
(V) Remarks
-38
38
0 O
0 O
0 O
0 O
36 I
0
0
0 I
0 I
0.6 I
0 I
0 I
(V) Remarks
-31
30.4
0 O
0 O
29 O
0 O
0 I
0
0
0.7 I
0 I
0.6 I
0 I
0 I
0 I