Chapter 3: Maintenance & Fault Finding 25Chapter 3: Maintenance & Fault FindingThis chapter provides information about maintaining your tiller pilot system,obtaining product support and solving common problems.3.1 General maintenanceCAUTION:The working parts of the tiller drive are sealed and lubricated forlife during manufacture.The tiller pilot does not contain any userserviceable parts. It should be repaired only by authorizedRaymarine service representatives.Display condensation• In certain conditions, condensation may appear on the LCD window. This willnot harm the unit, and can be cleared by switching on the illumination for awhile.Routine cabling checks• Make sure all connections are firmly attached.• Examine the cable for signs of wear or damage – replace any damaged cables.Cleaning the tiller pilot• If the tiller pilot is dirty, wipe it with a clean, damp cloth.• Never use chemical or abrasive materials to clean the tiller pilot.EMC advice• When powered up, all electrical equipment produces electromagnetic fields.These can cause adjacent pieces of electrical equipment to interact with oneanother, with a consequent adverse effect on operation.• To minimize these effects and enable you to get the best possible perfor-mance from your Raymarine equipment, guidelines are given in the installa-tion instructions, to enable you to ensure minimum interaction betweendifferent items of equipment, i.e. ensure optimum Electromagnetic Compati-bility (EMC).• Always report any EMC-related problems to your nearest Raymarine dealer.We use such information to improve our quality standards.• In some installations, it may not be possible to prevent the equipment frombeing affected by external influences. In general this will not damage the