160
TROUBLESHOOTING
14
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 will not power 
ON.
• The batteries are exhausted.
•  Loose connection of a battery pack (case).
• The battery polarity is reversed.
• Replace the batteries or charge the battery pack.
• Clean battery terminals.
• Check the battery polarity.
pgs. 2, 12–14
p. 14
p. 14
No sound comes from the 
speaker.
• Volume level is too low.
•  External speaker is connected or cloning 
cable is inserted.
• Push [] or [] to suitable level.
•  Check the external speaker connection or remove the 
cloning cable.
p. 16
–
Transmitting is impossible. • The batteries are exhausted.
•  A frequency outside of the 144/430 MHz 
amateur bands is set.
• Replace the batteries or charge the battery pack.
•  Reset the frequency within 144/430 MHz amateur 
bands.
pgs. 2, 12–14
pgs. 20, 161
No contact possible with 
another station.
•  Different tone is selected with tone/DTCS 
squelch.
• Check the tone/DTCS using tone scan. p. 152
Frequency cannot be set. • The lock function is activated.
• Memory mode or call channel is selected.
• Push 
[MENU  ] for 1 sec. to cancel the function.
• Push [V/MHz] to set the VFO mode.
p. 24
p. 18
Program scan function 
cannot start. 
•  Memory mode or call channel is selected.
•  Same frequencies are programmed both 
“1A” and “1B” of PROGRAM-CH.
• Push [V/MHz] to set the VFO mode.
•  Programming different frequencies in “1A” and “1B” 
respectively.
p. 18
p. 105
Memory scan function 
cannot start.
•  The VFO mode or call channel is selected.
•  The programmed memory channel is only 
one.
• Push [M/CALL] to select memory mode.
• Program 2 or more memory channels.
p. 18
p. 94
The displayed frequency is 
erroneous.
• The CPU malfunctioned.
• External factors caused a fault.
• Reset the transceiver.
•  Remove and reattach the battery pack or battery 
case.
pgs. 158, 159
p. 2
Cannot charge the battery 
with BC-139 (LED blinks 
orange).
• The transceiver's power is ON.
•  The battery pack is fault electric discharge.
•  Turn the transceiver’s power OFF, or insert only the 
battery pack into the BC-139 to charge it.
•  The battery pack is charged alone (without the trans-
ceiver) or regular charge is carried out.
p. 13
pgs. 12, 13