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FM IF BAND
REC CAL
H
R/L
AUTO STOP
SENS. LEVEL
IF band switching signa! output. H: Wide, L: Narrow.
Fixed at Wide in other reception modes than FM.
REC CAL reference signal transmission request signal output.
H: REC CAL reference signal transmission request, L: Normal.
Auto tuning stop sensitivity switching signal output.
H: High, L: Low.
Control signal output of pin 6 BLK of FL driver IC (LC7570).
H: FL display ON, L: FL display OFF.
N.C.
Only pin 56 shall be set ready for being pulled up.
a
FL -B power supply connection.
ENG a
H
ROTARY
ENCOD- | Rotary encoder output signal input. H: ON, L: OFF.
ER "A"
7
Clock oscillation terminals. X'tal: 4.194304
MHz.
-,
CL2
Reset signal input. H: Normal, L: Reset.
N.C. On the PC board, shall be set ready for being pulled up.
Preset channel memory
@ When the MEMORY key is held depressed for more than
0.2 second then the key is released, preset channel
display "—"' blinks for about 5 seconds. In this period,
select A/B and press a numeric key (1 to 0); the preset
channel
memory
is stored and the stored channel
is
displayed.
@ When the MEMORY
key is pressed again while "—"' is
blinking, the display remains the same, but the unit gets
ready for another preset channel memory for another 5
seconds.
{f nothing
is does
after the key has been
pressed, the preset channel memory becomes impossi-
ble in about
5 seconds;
the preset
channel
display
returns to the last channel display, and the MEMORY
indicator goes off.
@ When an operation which is accompanied by muting is
activated
while
""—"
is blinking,
the preset
channel
memory
mode
is canceled
immediately.
This occurs
when one of the RF, IF, AUTO TUNING SYSTEM, REC
CAL, FM and AM
keys is pressed or when the rotary
encoder is rotated. However, if the blinking of '"—" was
started during the AUTO TUNING SYSTEM
operation,
the preset channel memory mode is not canceled even
when the AUTO TUNING
SYSTEM
key is pressed.
@ The MEMORY
key is not accepted
while the muting
timer is activated.
@ The MEMORY
indicator lights while the key is pressed.
When
the key is held depressed
for more
than 0.2
second, the indicator continues to light even after the
key has been released and, at this time, '"—" on the
preset channel! display starts blinking.
+B terminal (5V).
Programming feature
@ Last Ch -> Last Ch band is ChO of A> ChO of a
B: ChO of
B- ChO of 'a
REC CAL
@ During REC CAL operation, keys other than the REC CAL
key are not accepted.
@ The REC CAL operation is canceled by turning power
OFF (when the microprocessor is reset).
@ The preset channel memory mode is canceled when the
REC CAL key is pressed.
@ When
the REC CAL key is pressed during frequency
scanning
in the
Auto
Tuning
mode,
the
frequency
scanning
pauses temporarily. The frequency scanning
resumes
when
the
REC
CAL
mode
is canceled
by
pressing the REC CAL key again.
@ When the REC CAL key is pressed during the AUTO
TUNING
SYSTEM operation, the AUTO TUNING SYS-
TEM operation will be carried out until the end.
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