Cobra Electronics MRHH475FLTBTEU - Manual (Page 23)

VHF Marine Radio Protocols Operating Your Radio
41
Maintenance and
Troubleshooting
No display on LCD
when radio is turned
On Batteries are exhausted
Batteries not installed properly
Recharge or replace batteries
Remove batteries and reinstall
according to polarity markings
Batteries run
down quickly Batteries are at the end of
their life Replace with new batteries
Will transmit at low
or medium power,
but not at high power Batteries are low
Selected channel is limited
to one (1) watt
Recharge or replace batteries
Switch to another channel
Bluetooth capable
phone will not pair with
the radio or operation
isn’t as expected
There might be a
compatibility issue Try with another brand or
model mobile phone to
confirm the problem
Contact Cobra with the details
Will not transmit Selected channel is limited
to receive only Switch to
another channel
No sound from
speaker Volume level is too low or
squelch level is too deep Re-adjust volume
and squelch
No response to
button press Button lock is On Press Backlight/
Key Lock button
No answer to calls Out of range of
other station
Signal is blocked
by terrain
Switch to three (3) or maxi-
mum watts or move closer
Move until you have a “line-
of-sight” to the other station
Problem Possible Cause(s) Solution(s)
VHF Marine Radio Protocols Operating Your Radio
40 English
Floating Feature
BURP Feature
Cobra’s BURP feature allows the operator to expel water from
inside the speaker grill. This is especially useful if the radio is
dropped overboard or during extreme foul weather conditions.
In these conditions, water can become trapped in the
speaker grill and muffle the audio.
To Activate BURP:
1. Press and release the 16 and SCAN keys at the
same time.
2. The BURP tone(s) at maximum level will sound
from the internal speaker for eight seconds.
3. During this time, the LCD will display the following
“burp” as shown to the left.
4. Hold the radio with the speaker grill down to help
the water drain out.
5. Press the ESC key at any time to cancel the
BURP feature.
Floating Radio
This radio is designed to float if dropped overboard. The orange
center makes it visible and easy to retrieve. This rugged radio
is also designed to meet JIS7 (IPX7) specifications. This means
it’s designed to operate properly after being submerged in
one meter deep water for 30 minutes.
NOTE
Do not leave the radio floating in water permanently.
This could cause premature corrosion of the battery
contacts and other damage.
The radio is only designed to float with its included
Lithium-ion battery. Using other approved batteries
might cause the radio to sink. This also applies to
the AA battery tray included, depending on the weight
of the AA batteries used.
BURP Feature
BURP Feature
Floating Radio
Maintenance
•
Very little maintenance is required to keep your CobraMarine VHF radio
in good operating condition:
n Keep the radio and charger 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.
n 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.
n 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.
Troubleshooting
•
MRHH475EU_MANL_vC.qx:MRHH475_ENG_Body 12/28/09 9:44 AM Page 40