23-1
23. MAINTENANCE AND TROUBLE-
SHOOTING
Periodic checks and maintenance are important for proper operation of any electronic
system. This chapter contains maintenance and troubleshooting instructions to keep
optimum performance and the longest possible life of the equipment. Before attempt-
ing any maintenance or troubleshooting procedure please review the safety informa-
tion below. If you cannot restore normal operation after following the troubleshooting
procedures, do not attempt to check inside any unit; there are no operator-serviceable
parts inside. Refer any repair work to a qualified technician.
23.1 Maintenance
Regular maintenance is essential to good performance. A regular maintenance pro-
gram should be established and should at least include the items shown in the table
below.
Interval
Check
point
Check and measures Remarks
When
needed
LCD To clean the LCD, wipe the LCD
carefully to prevent scratching, us-
ing 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 fre-
quently so the salt or dirt will not
scratch the LCD. Do not use sol-
vents such as thinner, acetone or
benzene for cleaning. Also, do not
use a degreaser or an antifog solu-
tion, as they can strip the coating
from the LCD.
Do not use chemical-
based cleaners for
cleaning. They can re-
move paint and mark-
ings.
3 to 6
months
Cabling Check that all cabling is firmly con-
nected and is not damaged.
Replaced damaged
cabling.
WARNING
ELECTRICAL SHOCK HAZARD
Do not open the equipment.
Only qualified personnel can work
inside the equipment.
Do not apply paint, anti-corrosive sealant
or contact spray to coating or plastic parts.
Those items contain organic solvents that can
damage coating and plastic parts, especially
plastic connectors.
NOTICE
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