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RayChart 420 and 420D
Chartplotter
Owner’s Handbook
SAFETY NOTICES
1. HIGH VOLTAGE.
The display unit contains high voltages. Adjustments require specialised service procedures and tools only available to qualified service technicians
–there are no user serviceable parts or adjustments. The operator should never remove the display unit cover or attempt to service the equipment.
2. NAVIGATION AID.
This device is only an aid to navigation. Its accuracy can be affected by many factors, including equipment failure or defects, environmental conditions and improper handling or use.
It is the user’s responsibility to exercise common prudence and navigational judgement, and this device should not be relied upon as a substitute for such prudence and judgement.