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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
Looseness of mounting
screws and terminal base
screws
Cable sheath condition
Dust sticking condition
Module replacement
Connector condition
Before replacing the module, switch it off to avoid electrical shock hazards and
also to prevent it from being damaged or malfunctioning. (When replacing the
battery module, be sure to follow the procedure described under "6.3 Replacing
the Battery Module.")
Static electricity may damage the module. Before starting the work, discharge
all electrostatic charge from your body.
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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