LG LX-D2640, Service Manual

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