Chapter 6: Maintenance & Fault Finding

6-3

 

 

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

Correction

 

 

Unit does not function

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)

 

 

Poor display definition

Adjust contrast setting and/or backlight level

 

 

No position information

Check the GPSconnection

 

Check the GPSreceiver/antenna

 

 

No fix

Check that GPS receiver not obstructed

No dfix (RC420 only)

Check beacon station coverage

 

Check antenna ground (see GPS antenna Installation Guide)

 

 

No NMEA data received

Check the POWER/NMEA connector and the NMEA equipment

 

 

Loss of stored data,

Return to dealer for internal battery chack

eg. waypoints

 

 

 

No detailed chart data

Check that Nav-Chart card is pushed fully home

 

Check that the Nav-Chart card has appropriate cartography

 

 

Other problems

visit website www.raymarine.com

 

 

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Raymarine 420D manual Problem solving, Fault finding