80
11
TROUBLESHOOTING
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
PROBLEM
POSSIBLE CAUSE
SOLUTION
REF.
No power comes on.
No sound comes from the
speaker.
Transmitting is impossible.
No contact possible with
another station.
Tuning dial or [
Y
]/[
Z
] func-
tion is strange.
Frequency cannot be set.
No beep sound.
Receive audio is distorted.
Desired set mode item
cannot be selected.
Attached battery pack can-
not be charged with the
optional BC-139.
• The batteries are exhausted.
• The battery polarity is reversed.
• Volume level is too low.
• Different tone is selected with tone/DTCS squelch.
• The batteries are exhausted.
• The frequency outside of the 50/144/430 MHz
amateur band is set.
• Different tone is selected with tone/DTCS squelch.
• Tuning dial and [
Y
]/[
Z
] functions are exchanged.
• The lock function is activated.
• Memory or call channel is selected.
• Beep tones are turned OFF or the beep tone level
is too low.
• The operating mode is not selected correctly.
• 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.
• The transceiver’s power is ON. (The charging indi-
cator blinking orange.)
• Replace the batteries or charge the battery pack.
• Check the battery polarity.
• Push [
Y
] to obtain a suitable level.
• Check the tone using tone/DTCS scan.
• Replace the batteries or charge the battery pack.
• Reset the frequency inside the 50/144/430 MHz
amateur bands.
• Check the tone using tone scan.
• Push [1 V
↔
D] for 1 sec. to cancel the function.
• Push [CALL/TV LOCK] for 1 sec. to cancel the function.
• Push [VFO] to select VFO mode.
• Turn beep tone ON or set the beep tone level to
appropriate level in set mode.
• Select a suitable operating mode in set mode.
• Turn the expanded set mode 1 or 2 ON.
• Enter set mode from appropriate operating mode.
• Detach the battery pack and charge the battery
only.
pgs. 1, 14
p. 1
p. 17
p. 70
pgs. 13, 14
p. 19
p. 70
p. 23
p. 74
p. 20
p. 21
p. 21
p. 55
pgs. 17, 18,
22, 27
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