Specifications

139
(19) Trouble shooting
Should the AR8600 appear to act strangely, check out the following suggestions to see if the problem
can be overcome. Failing this, switch off the AR8600, disconnect any external power connection (and
ideally remove the optional BP8600 battery from the radio - if fitted). Wait for at least 30 seconds then
reconnect the power and switch the radio on again. Check to see if the problem has cleared.
19-1 Soft reset of microprocessor
If removing power and switching the AR8600 off / on does not help, try a soft reset of the
microprocessor. Soft reset is achieved by powering-up the radio with the key held, do not
release the key until the opening message has performed and a frequency is displayed in
2VFO mode.
All scan & search environments are cleared, bank link is set off and the receiver frequency will be set to
88.000 MHz for both VFO-A and VFO-B. The beep will be enabled and set to default as will lamp and
LCD contrast. All memory and search bank data will be intact.
19-2 Other trouble shooting suggestions
AR8600 will not power on. Check that the set is connected to external power (12V d.c.) or that the
optional BP8600 battery is fitted and contains charge.
There is no audio. It may simply be that the squelch is closed or volume is turned down. and
hold the key and adjust the volume to a comfortable level. Ensure that no external loudspeaker,
headphone or earphone is in use. Check that the band scope is not in operation.
AR8600 display is strange and there is no audio. Check that the band scope is not in operation,
.
There is no receive. Check that a suitable aerial is connected to the AR8600 and the attenuator is not
switched on (ATT legend), also that the aerial is not accidentally connected to the i.f. input socket
instead of the aerial socket! Check that VOICE squelch is not in use (VSQ legend), check that LEVEL
squelch (LSQ legend) is not in operation.
Intermittent receive. Check that priority is not engaged and the band scope is not in operation.
Strange audio. Ensure that you are using the correct receive mode and are tuned to the centre of the
signal. In most cases the AR8600 can automatically select the correct parameters.
to select auto-mode.
No frequency display. If all other LCD characters appear normal check that the FREQ DISP facility is
not set OFF in the CONFIG menu.
LCD is dim. Check that the contrast is set to a sensible level (not too low) in the CONFIG menu
(around 10). An LCD test facility is provided. Power-up the AR8600 while holding ,
to switch off the test.
LCD legends are all shown. Check that the contrast is set to a sensible level (not too high) in the
Section 19, 19-1, 19-2