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8.
MAINTENANCE,
TROUBLESHOOTING
8.1
Maintenance
Check the following points regularly to maintain performance:
• Check that connections on the rear panel are firmly tightened and free of dust.
• Check that the grounding point is free of rust and the ground wire is tightly fastened.
• Remove dust or dirt from the cabinet with a soft, dry cloth. For stubborn dirt, you can
use water-diluted mild detergent. Clean the cabinet with a dry cloth after you use
detergent. Do not use solvents like thinner, acetone or benzene to clean the unit.
They can remove paint and indications.
• Wipe the LCD carefully to prevent scratching, using tissue paper and an LCD clean-
er. To remove dirt or salt deposits, use an LCD cleaner, wiping slowly with tissue
paper so as to dissolve the dirt or salt. Change paper frequently so the salt or dirt
will not scratch the LCD. Do not use solvents such as thinner, acetone or benzene
for cleaning. Also, do not use degreaser or antifog solution, as they can strip the
coating from the LCD.
LCD life
The life of the LCD is approximately 50,000 hours. The actual number of hours de-
pends on ambient temperature and humidity. When the brilliance cannot be raised,
have a qualified technician replace the LCD.
NOTICE
Do not apply paint, anti-corrosive
sealant or contact spray to plastic
parts or equipment coating.
Those items contain products that can
damage plastic parts and equipment
coating.
8-1
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Table of Contents
Troubleshooting
