
B−63085EN/02
2. HARDWARE
127
WARNING
Only those personnel who have received approved safety
and maintenance training may perform this replacement
work.
When opening the cabinet and replacing the board, 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.
CAUTION
Before starting replacement work, back up the contents
(such as parameters and programs) of the SRAM memory
of the CNC. Otherwise, the contents of the SRAM memory
may be lost during replacement work.
1) Unplug the connectors for the fans and memory backup battery from
the top of the CNC unit, then remove the yellow cover.
CAUTION
With a CNC unit that has an indicator for the touch pad, the
connectors CN1 and CD37 connected to the left side of the
unit, as viewed from the rear of the unit, must be unplugged
before removing the yellow cover.
2.5
REPLACING THE
MOTHERBOARD
D Replacement procedure