Aiwa LCX-257 Service Manual Digest page 25

Compact disc stereo system
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Pin No.
Pin Name
56-79
S24-S47
80
I-DOOR
81
I-WRQ
82
I-DRF
83-86
COM0-COM3
87
O-CDCONT
88
I-SQOUT
89
VSS3
90
VDD3
91
O-RWC
92
O-COIN
93
O-CQCK
94
O-LIGHT1
95
O-JOGLED
96
O-SCONTM
97
O-SCONTL
98
O-MUTE
99
O-LIGHT2
100
O-SRST
I/O
O
LCD SEG terminal initial setting output. (No.28-5)
I
CD door detection.
I
Sub-code Q reading stand-by for CD LSI communication.
I
RF level detection input.
O
LCD common output. (No.4-1)
O
CD power supply control.
I
Sub-code Q input for CD LSI communication.
Power supply - terminal.
GND.
O
Input/output selector control for CD LSI communication.
O
Serial data output for CD LSI communication.
O
Serial clock output for CD LSI communication.
O
Control output 1 of LCD back light.
O
Not connected.
O
Sound processor control.
O
O
Audio signal mute output.
O
Control output 2 of LCD back light.
O
Not connected.
39
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