
8.MAINTENANCE B-63494EN/02
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MAINTENANCE PARTS TO BE MAINTAINED PERIODICALLY
• Memory backup battery replacement
WARNING
When replacing the memory backup batteries, keep the power to the
machine (CNC) turned on, and apply an emergency stop to the
machine. Because this work is performed with the power on and the
cabinet open, only those personnel who have received approved safety
and maintenance training may perform this work.
When replacing the batteries, be careful not to touch the high-voltage
circuits (marked and fitted with an insulating cover).
Touching the uncovered high-voltage circuits presents an extremely
dangerous electric shock hazard.
NOTE
The CNC uses batteries to preserve the contents of
its memory, because it must retain data such as
programs, offsets, and parameters even while
external power is not applied.
If the battery voltage drops, a low battery voltage
alarm is displayed on the machine operator's panel
or CRT screen.
When a low battery voltage alarm is displayed,
replace the batteries within a week. Otherwise, the
contents of the CNC's memory will be lost.
To replace the battery, see the procedure described
in Section 2.10 of the maintenance manual
B-63005EN.
WARNINGS RELATED TO CHECK OPERATION
WARNING
1. When checking the operation of the machine with the cover
removed
(1) The user's clothing could become caught in the spindle or
other components, thus presenting a danger of injury. When
checking the operation, stand away from the machine to
ensure that your clothing does not become tangled in the
spindle or other components.
(2) When checking the operation, perform idle operation
without workpiece. When a workpiece is mounted in the
machine, a malfunction could cause the workpiece to be
dropped or destroy the tool tip, possibly scattering
fragments throughout the area. This presents a serious
danger of injury. Therefore, stand in a safe location when
checking the operation.