13-3
DD
Scanning
DD
Display
■ Main dial brake adjustment
The tension of the main dial may be adjusted to suit
you preference.
The brake adjustment is located on the bottom side of
the front panel. See the figure at left.
Slide the brake adjustment to comfortable tension level
while turning the dial continuously and evenly in one
direction.
■ Voice synthesizer operation
The IC-7800 has built-in voice synthesizer to announce
the frequency, mode, etc. (S-meter level can also be
announced—p. 12-17) in clear, electronically-gener-
ated voice, in English (or Japanese).
➥ Push [SPEECH] to announce the currently selected
frequency, etc.
• Push [SPEECH] for 1 sec. to additionally announce the
selected mode.
➥ Pushing a mode switch also announces the appro-
priate mode. (p. 12-17)
The output level of the voice synthesizer can be ad-
justed in level set mode. (p. 12-5)
13
MAINTENANCE
PROBLEM POSSIBLE CAUSE SOLUTION REF.
Programmed scan does
not stop.
Programmed scan does
not start.
Memory scan does not
start
Select memory scan does
not start
• Squelch is open.
•
The same frequencies have been programmed
in scan edge memory channels P1 and P2.
• 2 or more memory channels have not been
programmed.
• 2 or more memory channels have not been
designated as select channels.
• Set [SQL] to the threshold point.
• Program different frequencies in scan edge
memory channel P1 and P2.
• Program more than 2 memory channels.
• Designate more than 2 memory channels as
select channels for the scan.
p. 3-9
p. 8-4
p. 8-4
p. 9-7
PROBLEM POSSIBLE CAUSE SOLUTION REF.
The displayed frequency
does not change properly.
• The dial lock function is activated.
• A set mode screen is selected.
• The internal CPU has malfunctioned.
•
Push [LOCK] to turn the function OFF.
• Push [EXIT/SET] several times to exit the set
mode screen.
• Reset the CPU.
p. 5-18
p. 12-2
p. 13-7
