B-65285EN/03 TROUBLESHOOTING 4.HOW TO REPLACE THE FUSES AND PRINTED CIRCUIT BOARDS
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4 HOW TO REPLACE THE FUSES AND
PRINTED CIRCUIT BOARDS
Before replacing fuses or printed-circuit boards,
make sure that the recharge-under-way LED (red)
Before replacing fuses or printed circuit boards, see the table given
below to find which section or subsection in this manual provides
information about the related replacement procedure.
1 If a fuse blows, it is likely that there is a short-circuit
in the power supply for a device (such as a sensor)
connected to the servo amplifier.
After checking that all devices connected to the
servo amplifier are normal, replace the fuse.
If you do not remove the cause, it is very much likely
that the fuse will blow again.
2 Do not use any fuse not supplied from FANUC.
3 Before replacing a fuse, check a marking on it with
that on the printed-circuit board. Be careful not to
mount a fuse with an incorrect rating.