
B–70115EN/03
11. LASER OPTICAL SYSTEM
343
(11) When replacing a mirror, remove the mirror from its holder. Since
vacuum grease is applied to the rear of the mirror, insert a tool such
as a standard screwdriver into the slot on the side plane of the mirror
mounting section, and pry out the mirror. Be careful not to apply
excessive force to the mirror holder.
(12)Apply a thin coat of vacuum grease to the rear of the new mirror. In
those cases where the reflecting side of the mirror faces down, the
mirror will fall unless grease is applied.
(13)Place the mirror in its holder and, using a dryer, blow warm air onto
the holder to warm it. This will soften the vacuum grease and bond
the mirror onto the holder. Mount the mirror holder as explained in
step (10).
(14)Turn on the main circuit breaker of the laser oscillator, then turn on
the power to the CNC.
(15)Perform a leak check.
(16)This completes cleaning and replacement.
(17)Perform discharge aging.
(18)Then, perform alignment.
NOTE
Never adjust any part other than the cleaned or replaced
folding mirrors.