Chapter 6: Maintenance & Troubleshooting 107
6.3 Problem Solving
Prior to packing and shipping, all Raymarine products are subjected to
comprehensive test and quality assurance programmes. However, if this
unit should develop a fault, please refer to the following table to identify
the most likely cause and the corrective action required to restore normal
operation.
If you still have a problem after referring to the table, contact your local
dealer, national distributor or Raymarine Technical Services for further
advice.
Always quote the product serial number.
Troubleshooting
As a guide to problem solving, common problems and their possible
causes are detailed below.
Problem Correction
Unit does not function 1. Make sure that the power supply cable is
undamaged and that all connections are tight
and free from corrosion.
2. Check polarity of the DC power cables for
proper connection.
Reconnect cables if necessary.
3. Check in-line fuse. Replace if necessary.
4. Check vessel’s power (battery) for correct
voltage readings (10.0–18.0 VDC).
Poor display definition Adjust contrast setting and/or backlight level.
No position information Check the GPS Antenna connection
Check the GPS Antenna (RC435 only)
No fix Check that GPS Antenna not obstructed and
able to get clear direct line of sight view of satel-
lites in the sky.
No NMEA data received Check the POWER/NMEA connector and the
NMEA equipment. Note that NMEA OUT from
one product connects to NMEA IN on another
product and vice versa.
Loss of stored data, waypoints Return to dealer for internal battery check.
Note that the Waypoint database is cleared
when a Factory Reset is performed.
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