User's Manual

28
TROUBLESHOOTING
12
The transceiver does
not turn ON.
No sound from the
speaker.
Transmitting is impos-
sible, or high power
can not be selected.
The displayed channel
cannot be changed.
Scan does not start.
No beeps.
Self check error.
(Temperature)
Self check error.
(Battery voltage)
• The battery is exhausted.
• Bad connection to the battery pack.
• Squelch level is too deep.
• Volume level is too low.
• Speaker has been exposed to water.
• Water has entered to [SP MIC] connector.
• Some channels are for low power or re-
ceive only.
• The battery is exhausted.
• The battery over charged.
• The output power is set to low.
• Lock function is activated.
•“TAG” channels are not programmed.
• Beep tones are turned OFF.
• The temperature is outside of –35°C to
+73°C; –31°F to +163°F (approx)
• The connected battery pack’s voltage is
more than 11 V.
• Recharge the battery pack.
• Check the connection to the transceiver.
• Set squelch to the threshold point.
• Rotate [VOL] to set a suitable level.
• Drain water from the speaker.
• Dry [SP MIC] connector.
• Change channels.
• Recharge the battery pack.
• Verify the battery voltage is correct.
• Push [Hi/Lo• ] to select high power.
• Push [Hi/Lo• ] for 1 sec. to cancel the
function.
• Set the desired channels as “TAG” channels.
• Set the beep tones to ON (Fix Beep/User
Beep) on the SET mode.
• Leave the transceiver at room temperature
for a while. Turn the power ON to check if the
internal temperature has returned to normal.
• Verify the battery voltage is correct.
p. 22
p. 3
p. 9
p. 9
—
—
pgs. 8,
9, 29
p. 23
—
p. 9
p. 10
p. 13
p. 17
—
—
PROBLEM POSSIBLE CAUSE SOLUTION REF.
IC-M90.qxd 04.8.23 3:54 PM Page 28