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