Raymarine Radome Scanners - Manual (Page 25)

Maintenance and troubleshooting 21
Maintenance and troubleshooting
CAUTION: System power
Always turn the radar system OFF before carrying out any
routine maintenance on the scanner or nearby equipment.
Switch off the display unit before removing the power cord.
Introduction
DO NOT remove the rear cover of the display or the internal covers in the
scanner. There are no user serviceable parts or adjustments. DO NOT
attempt to service the equipment.
Maintenance
Maintenance is limited to the following periodical checks:
• Examine the cables for signs of damage, such as chafing, nicks and
cuts.
• Check that the cable connectors are firmly attached.
• Remove the scanner cover and check for signs of water damage.
• Make sure the scanner is still securely attached to the mounting
surface.
• Once a year, remove, grease and re-attach the mounting bolts securing
the scanner.
Troubleshooting
The table below identifies the most likely cause and the corrective action
required to restore normal operation.
If you still have a problem after referring to this table, contact your local
dealer, national distributor or Raymarine Product Support Department for
further advice.
Always quote the product serial number. The display unit serial number can
be found on the back of the unit, the scanner serial number can be found
on the back of the scanner near the gland.
Problem Solution
“Scanner not responding”
message 1. Check that the cable connecting the
scanner to the radar display unit is
firmly attached and undamaged.
2. Check that the polarity of the cables
is correct.
The bearing displayed on the
radar display is not the same
as the actual bearing. Perform the bearing alignment proce-
dure described in the relevant display
unit Owner’s handbook.