4MAINTENANCE, TROUBLESHOOTING
WARNING
ELECTRICAL SHOCK HAZARD
Do not open the equipment.
Only qualified personnel should work inside the equipment.
4.1Preventive Maintenance
Regular maintenance is important for good performance. A maintenance program should be established and should include the following points.
•Check connectors and ground terminal on the processor unit and display unit for tightness.
•Check ground terminal for rust. Clean or replace as necessary.
•Check for water leakage in the antenna cable. Replace if necessary.
•Remove dust and dirt from the display unit (including LCD) and processor unit with a dry, soft cloth. Wipe the LCD softly to prevent scratching. Do not use chemical cleaners for cleaning - they can remove paint and markings.
