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4-1
4 MAINTENANCE,
TROUBLESHOOTING
WARNING
WARNING
ELECTRICAL SHOCK HAZARD
Do not open the equipment.
Only qualified personnel
should work inside the
equipment.
4.1 Preventive 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.