Aiwa CSD-MD50, Service Manual, Page: 53 / 74

71
Pin No. Pin Name I/O Description
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
SK
CS
NC
POWER
+B
GND
—
CD+B
TU+B
CD
MD
TUNER
TAPE
STANDBY
—
RELAY
MUTE
CE
CLK
DI
DO
ST
COIN
CQCK
SQOUT
WRQ
DRF
NC
RWC
DOOR+
GND
+B
DOOR-
REC A
REC B
TAPEIN
STOP
AS
PB/REC
BEAT
PL
EEPROM serial clock output.
EEPROM chip selection.
Not used.
Power regulator control output.
Power supply input.
GND terminal.
Not used.
CD regulator control output. “H”: when operating.
TU regulator control output. “H”: when operating.
CD LED control output. “L”: to turn on the LED.
MD LED control output. “L”: to turn on the LED.
Tuner LED control output. “L”: to turn on the LED.
Tape LED control output. “L”: to turn on the LED.
Stand-by LED control output. “L”: to turn on the LED.
Not used.
Relay control output. “H”: when operating.
MUTE operation. “H”: when operating.
LC72121 chip enable output.
LC72121 serial clock output.
LC72121 serial data output.
LC72121 serial data input.
Stereo reception detection.
CD serial data output.
CD serial clock output.
CD sub-code Q input.
CD sub-code Q reading standby.
CD RF level detection input.
Not used.
CD input/output selector control.
CD loading “+” output.
GND terminal.
Power supply input.
CD loading “-” output.
REC SW-A detection. “L”: when detected.
REC SW-B detection. “L”: when detected.
Cassette detection input. “L”: when detected.
Stop detection input. “L”: when detected.
Auto stop detection input.
Cassette PLAY mode control output. PLAY: “L”, REC: “H”.
Beat selector output. Initially: “L”
Plunger solenoid control output. “H”: when operating.
O
O
—
O
—
—
O
O
O
O
O
O
O
O
O
O
O
O
O
O
I
I
O
O
I
I
I
—
O
O
—
—
O
I
I
I
I
I
O
O
O