— 78 —
Pin No.
Pin Name
I/O
Function
33
SIRCS
I
Sircs input from the remote control receiver (IC602)
34
VOL-B
I
Rotary encoder pulse input from the S701 (VOLUME)
35
JOG-B
I
Jog dial pulse input from the S711 (
≠
AMS
±
)
36
SPEANA-1
I
37
SPEANA-2
I
38
VASS
—
Ground terminal
39
VAREF
I
Reference voltage (+5V) input terminal (for A/D conversion)
40
VDD
—
Power supply terminal (+5V)
41
—
—
Not used (open)
42 to 56
GR-1 to GR-15
O
Grid drive signal output to the fluorescent indicator tube (FL601)
57 to 77
SEG-1 to
SEG-21
O
Segment drive signal output to the fluorescent indicator tube (FL601)
78
VKK
—
Power supply terminal (–30 V) (for fluorescent indicator tube drive)
79
LED1
O
LED drive signal output terminal (TUNER/BAND)
80
LED2
O
LED drive signal output terminal (ENTER/NEXT, GROOVE)
Spectrum analyzer drive signal input terminal (A/D input)