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CIRCUIT DESCRIPTION
2-4. Graphic equalizer (G.EQ) section
The
microprocessor
itself does
not
include
the G.EQ
function.
However, it has the G.EQ operation mode as well
as the Tape and Tuner modes, and the key inhibit signal is
output in the Tape and Tuner modes.
The G.EQ
is controlled
using a general-purpose
micro-
processor
manufactured by Sanyo. This microprocessor has
independent
frequency
select switches.
As these switches
are
set
to
correspond
to
the
UP/DOWN
switch
of our
microprocessor,
turning
the UP/DOWN
switch
ON
turns
the frequency
select switches
ON
so the frequencies can
be selected. The following G.EQ functions are incorporated
in the G.EQ control microprocessor.
O 7-band spectrum analyzer display.
O
5 preset equalizer curves.
O 2dB steps +12dB variation
(£10dB8 variation is also possible).
Note: When
UP or DOWN
is pressed in other timing than
when
the
set point
is flashing
(indicating setting
standby), the UP SW starts with f1 and DOWN
SW
with f7. Therefore, if there is no input for 5 seconds,
the starting frequency is either f1 or f7.
KRC-999 II
3. Terminal Description
3-1. Terminal configuration diagram
TAPE PC OUT
RESET OUT
si
Sk
Si
si
Sh
Sg
ODN
OO
PWN
K2
O
Sf
K3
TUNER
PACK RESET
IN
Sd
Sc
TUNER
PC IN C-ST
SIG
IN
MOTOR+B
uPD 75108G
(Top view)
Sb
Sa
GND
REEL
T
REELS
S-M
REQ
REMOCON
IN
AGC
CUT
OUT LOCAL/DX
TUNER
PC OUT
KGo
ACC
IN
MUSIC
IN
sl
BUZER
VOL MUTE
PCL
HI/LO
sD IN
ST IN
AV IN
SMETER
17
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