Service And Maintenance; Routine Equipment Checks - Raymarine E90W User Reference Handbook

21.1 Service and maintenance

This product contains no user serviceable components. Please
refer all maintenance and repair to authorized Raymarine dealers.
Unauthorized repair may affect your warranty.
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21.2 Routine equipment checks

Raymarine strongly recommends that you complete a number of
routine checks to ensure the correct and reliable operation of your
equipment.
Complete the following checks on a regular basis:
• Examine all cables for signs of damage or wear and tear.
• Check that all cables are securely connected.
E-Series Widescreen User reference