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6 MAINTENANCE
6.1 Maintenance and Inspection
To keep the module running in optimal condition, it requires checks. Make checks daily or
periodically (twice a year or more often).
Item
Module appearance
LED
Loose mounting screws
Cable covering status
Dust adhesion
Module replacement
Connector status
Before replacing the module, switch it off to avoid electrical shock hazards and
also to prevent it from being damaged or malfunctioning.
Static electricity could cause damage to the module. Before handling the
module allow static charges on the human body to discharge.
Table 6-1 Maintenance and Inspection Items
Check the module case for cracks, flaws and other defects. Such defects can be a
sign of breakage in the internal circuitry, causing the system to malfunction.
Check to see if the module ERR LED has not glowed.
Check the module and communications cable mounting screws for tightness.
Give additional tightening to screws found loose. Loose screws could cause the
system to malfunction and lead to burnouts after heating.
Check cable coverings for defects. A cable covering out of position could cause
the system to malfunction, incur electrical shock hazards, or develop short circuits,
resulting in burnouts.
Check to see if the module has not caught dust. If dust is noticed, remove it with
a vacuum cleaner or other apparatus. Dust could cause short circuits in its
internal circuitry, resulting in burnouts.
Replacing the module without switching it off could cause damage to its hardware
and software. Before replacing the module, switch it off first.
Connectors might have their characteristics degraded to cause failures if their
contacts catch dust or foreign matter. Cover connectors out of use with the
protective cap supplied.
NOTICE
Point to check
CAUTION
6-2
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Table of Contents
Troubleshooting
