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11
TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE SOLUTION REF.
No power comes ON. The batteries are exhausted.
The battery polarity is reversed.
Replace the batteries or charge the battery pack.
Check the battery polarity.
pgs. 1, 14
p. 1
No sound comes from the
speaker.
Volume level is too low.
Different tone is selected with tone/DTCS
squelch.
Push [Y] to a suitable level.
Check the tone using tone/DTCS scan.
p. 17
p. 70
Transmitting is
impossible.
The batteries are exhausted.
A frequency outside of the 50/144/440
MHz amateur bands is set.
Replace the batteries or charge the battery pack.
Reset the frequency within the 50/144/440 MHz
amateur bands.
pgs. 13, 14
p. 19
Tuning dial or [Z]/[Y]
function is strange.
Tuning dial and [Z]/[Y] functions are
exchanged.
Push [1 VD] for 1 sec. to cancel the function. p. 23
No beeps sound. Beep tones are turned OFF or the beep
tone level is low.
Turn beep tones ON or set the beep tone level to
appropriate level in set mode.
pgs. 58,
59
No contact possible with
another station.
Different tone is selected with tone/DTCS
squelch.
Check the tone using tone scan. p. 70
Receive audio is
distorted.
The operating mode is not selected
correctly.
Select a suitable operating mode in set mode. p. 21
Desired set mode item
cannot be selected.
The desired set mode item is in expanded
set mode 1 or 2.
Some set mode items can be selected
from VFO or memory mode only.
Turn the expanded set mode 1 or 2 ON.
Enter set mode from appropriate operating mode.
p. 55
pgs. 17, 18
22, 27
Frequency cannot be set.
The lock function is activated.
Memory or call channel is selected.
Push [CALL/TV LOCK] for 1 sec. to cancel the function.
Push [VFO] to select VFO mode.
p. 74
p. 20
If your transceiver seems to be malfunctioning, please check
the following points before sending it to a service center.
!!00
!!11
HM-75
REMOTE CONTROL MICROPHONE
TROUBLESHOOTING
IC-T90A-1.qxd 02.7.24 03:36 PM Page 85 (1,1)
87


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