Problem Solving; Fault Finding - Raymarine Chartplotter Owner's Handbook Manual

Chapter 6: Maintenance & Fault Finding

6.3 Problem solving

Prior to packing and shipping, all Raytheon 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 Raytheon Product Support for further advice.
Always quote the product serial number.

Fault finding

Problem Problem
Problem Problem Problem
Unit does not function
Poor display definition
No position information
No fix
No dfix (RC420 only)
No NMEA data received
Loss of stored data,
eg. waypoints
No detailed chart data
Other problems
Correction Correction
Correction Correction Correction
1. Make sure that the power supply cable is sound and that all
connections are tight and free from corrosion.
2. Check polarity of the dc power cables for proper connection.
Reconnect leads if necessary.
3. Check in-line fuse. Replace if necessary.
4. Check vessel's power (battery) for correct voltage readings
(10.0Vdc to 18.0Vdc)
Adjust contrast setting and/or backlight level
Check the GPSconnection
Check the GPSreceiver/antenna
Check that GPS receiver not obstructed
Check beacon station coverage
Check antenna ground (see GPS antenna Installation Guide)
Check the POWER/NMEA connector and the NMEA equipment
Return to dealer for internal battery chack
Check that Nav-Chart card is pushed fully home
Check that the Nav-Chart card has appropriate cartography
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