Maintenance and troubleshooting, Advanced operation – Cobra Electronics MARINE MR HH400 EU User Manual

Page 23

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background image

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

NiMH batteries run
down quickly

Batteries are at the
end of their life

Replace with new batteries

Will transmit at
1 watt, but not
at 5 watts

Batteries are low

Selected channel is
limited to 1 watt

Recharge or replace batteries

Switch to another channel

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

Key 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 5 watts or
move closer

Move until you have a “line-of-
sight” to the other station

Maintenance and

Troubleshooting

Nothing comes close to a Cobra

®

43

Advanced Operation

42 English

To enter memory location scan:

1. From Standby mode, press the Memory button.

2. Press the Scan button.

The radio will immediately begin to scan the channels you
programmed into the memory. The

Scan and Memory icons

will show on the LCD.

To exit memory location scan:

1. From Memory Location Scan mode, press the Scan

button. This will return the radio to Memory mode on
the last scanned memory location.

2. Press the Memory button to return to Standby mode on

the last channel shown before entering memory scan.

During memory location scan (while receiving
an incoming transmission), you can choose
from the following:

a. Press the Talk button to remain on that memory

location and end scanning. This will return the radio
to Standby mode.

b. Press the Channel Up or Channel Down button to

resume scanning memory locations.

If you do not press any buttons within ten seconds, your
radio will automatically resume scanning memory locations.

During memory location scan (while not receiving a
transmission), you can choose from the following:

a. Press the Talk button to communicate on the last

memory location scanned and return to Standby mode.

b. Press the Channel Up or Channel Down button to

change scan direction.

Memory Button

Scan Button

Memory Scan Mode

Operating Your Radio

Operating Your Radio

a

Talk or Channel Up/Down

b

Problem

Possible Cause(s)

Solution(s)

Maintenance

Very little maintenance is required to keep your CobraMarine

VHF radio

in good operating condition.

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.

If the radio is exposed to salt water, wipe with a soft, moist cloth at least
once a day to prevent build-up 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 so if you are using alkaline batteries.

Troubleshooting

400-BR-F 6/23/04 2:12 PM Page 42

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