Icom ID-31A

51
New2001
TROUBLESHOOTING
8
If your transceiver seems to be malfunctioning, please check the following points before sending it to a service center.
PROBLEM POSSIBLE CAUSE SOLUTION REF.
Transceiver does not turn
ON.
•Thebatteryisexhausted.
•Thebatterypolarityisreversed.
•Loose connection of a battery pack (case).
•Chargethebatterypack,orreplacethebatteries.
•Checkthebatterypolarity.
•Cleanbatteryterminals.
pp. 1, 13–16
p. 15
–
No sound comes from the
speaker.
•Volumelevelistoolow.
•Anexternalspeakeroracloningcableiscon-
nected to the [SP] jack.
•Rotate[VOL]toadjusttoadesiredlevel.
•Checktheexternalspeakerconnectionorremove
the cloning cable.
p. 19
–
Transmitting is impossible. •Afrequencyoutsideofthe430MHzamateur
bands is set.
•ThePTTLockfunctionisactivated.
•Setthefrequencywithin430MHzamateurbands.
•SetthePTTLockfunctiontoOFFintheFUNCTION
Menu.
p. 23
p. 44
Transmitting using the VOX
function is impossible.
•TheVOXLevelissettoOFF or too low.
•TheMICGainistoo low.
• Set the VOX Level to a suitable level.
• Set the MIC Gain to a suitable level.
p. 59
p. 45
Contacting with another
station is impossible.
•Adifferenttoneorcodeisusedforthetone/
DTCS squelch.
•Checkthetone/DTCSbyperformingatonescan. p. 27
Frequency cannot be set. •TheKeyLockfunctionisactivated.
•Thememorymode,Callchannelmode,orDR
mode is selected.
•Holddown[LOCK]
for 1 second to cancel the
Key Lock function.
•Push[V/MHz] to select the VFO mode.
p. 26
p. 21
A program scan does not
start.
•Thememorymode,Callchannelmode,orDR
mode is selected.
•Thesamefrequencyhasbeenprogrammedin
the scan edge channels, “✱A” and “✱B.”
•Push[V/MHz]
to select the VFO mode.
•Program different frequencies in the scan edge
channels.
p. 21
p. 28
A memory scan does not
start.
•
The VFO mode or Call channel mode is selected.
•Onlyoneornomemorychannelhasbeenpro-
grammed.
•
Push [M/CALL] to select the memory mode.
•Programtwoormorememorychannels.
p. 21
p. 28
The displayed frequency is
erroneous.
•TheCPUhasmalfunctioned.
•Externalfactorshavecausedafault.
•Resetthetransceiver.
•Removeandreattachthebatterypack/case.
p. 50
p. 1