CA42/50/52 Troubleshooting, Maintenance and Service
Chapter 11
146
Symptom
Check
Remedy
Echo image on radar display
differs from actual image.
Check if ship’s heading is
incorrect.
Set ship’s heading correctly
– see section 8.2.2.
Check if timing is incorrect. Set Zero Range correctly –
see section 8.2.2.
Echo images on radar
display are blurred.
Check if GAIN, STC or FTC
is not adjusted properly.
Make adjustment – see
section 8.2.5.
Too much noise in radar
display.
Check if tuning is incorrect. Adjust TUNE – see section
8.2.2.
Alarm activated in radar
function.
Check
Alarms
in section
8.2.8.
All data is deleted after
turning off the unit and
turning it back on.
Check battery lifetime.
Expected lifetime is 3-5
years.
Internal battery must be
replaced by authorized
dealer.
11.2 Preventive maintenance
Surface cleaning
– to keep the CAXX cabinet and display screen clean, wipe the
surfaces with a clean damp cloth. For heavier cleaning, use a clean, damp cloth
which has been dipped in a solution of a mild dish detergent and water. Wring
out firmly before wiping the unit.
)
Never use cleaning solutions containing spirit or alcohol.
Transducer
– periodically clean the face of the transducer with a plastic utensil
using a scrubbing action.
)
Do not use a harsh abrasive or a solvent to clean the transducer.
Electrical connections
– periodically check the electrical connections. Make
sure that connections are tight and that no cables are frayed or worn.
Radar antenna
– periodically check that the scanner’s fitting bolts are tight and
not corroded. Every 6 to 12 months an even coating of grease should be applied
to the entire surface of the antenna drive gear with a spatula or brush. Most of the
maintenance of the radar antenna should be left to qualified personnel. If there
are problems with the performance, please contact your authorized dealer.
)
Warning! Do not open the radome before the cable between the radar antenna
and CAXX has been disconnected. It is
not
sufficient just to turn off the power
by the switch, as the radar antenna is still supplied power inside.
