Cobra Electronics Corporation MRHH125 Benutzerhandbuch
Maintenance and
Troubleshooting
VHF Marine Radio Protocols
Operating Your Radio
No display on LCD when
radio is turned On
radio is turned On
Batteries are exhausted
Batteries not installed
properly
properly
Recharge or
replace batteries
Remove batteries and
reinstall according to
polarity markings
replace batteries
Remove batteries and
reinstall according to
polarity markings
NiMH batteries run
down quickly
down quickly
Batteries are at the
end of their life
end of their life
Replace with new
batteries
batteries
Will transmit at
one (1) watt, but not
at three (3) watts
one (1) watt, but not
at three (3) watts
Batteries are low
Selected channel is
limited to one (1) watt
limited to one (1) watt
Recharge or
replace batteries
Switch to
another channel
replace batteries
Switch to
another channel
Will not transmit
Selected channel is
limited to receive only
limited to receive only
Switch to
another channel
another channel
No sound from speaker
Volume level is too low
Re-adjust volume
No response to
button press
button press
Button lock is On
Press Backlight/
Key Lock button
Key Lock button
No answer to calls
Out of range of
other station
Signal is blocked
by terrain
other station
Signal is blocked
by terrain
Switch to three (3) watts
or move closer
Move until you have a “line-
of-sight” to the other station
or move closer
Move until you have a “line-
of-sight” to the other station
Problem
Possible Cause(s)
Solution(s)
Maintenance
•
Very little maintenance is required to keep your CobraMarine VHF radio
in good operating condition:
in good operating condition:
■
Keep the radio clean by wiping with a soft cloth and mild detergent. Do not use
solvents or harsh or abrasive cleaners, which could damage the case or scratch
the LCD screen.
the LCD screen.
■
If the radio is exposed to salt water, wipe with a soft, moist cloth at least once a day to
prevent buildup of salt deposits, which could interfere with button operation.
■
If the radio will be stored for a long period, such as over the winter,
remove the batteries from the battery tray and store them in a separate
package. This is especially important if you are using alkaline batteries.
package. This is especially important if you are using alkaline batteries.
Troubleshooting
•
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