Lubrication; Replacing Fuses - Martin Professional MAC 250 Krypton User Manual

2. _ash dirty lenses and filters with isopropyl alcohol 99.9p. ! generous amount of regular glass cleaner
may also be used, but no residues may remain.
3. Rinse with distilled water. =ixing the water with a small amount of wetting agent such as Aoda7 Qhotoflo
will help prevent strea7ing and spotting.
4. Dry with a clean, soft and lintKfree cloth or blow dry with compressed air.
F A N
To maintain adeYuate cooling it is important that the fan be cleaned regularly. It can be cleaned with a soft
brush, vacuum, or compressed air.

Lubrication

The =!C 250 Arypton/4ntour does not reYuire lubrication under normal circumstances. The slides and
spindle for the focus lens car are lubricated with a longKlasting TeflonKbased lubricant that can be reapplied
by a =artin service partner in the unli7ely event that this should be necessary.

Replacing fuses

M A I N F U S E
The main fuse holder is built into the mains input soc7et. >&?&($(&851.&$'-&$07/&$,*'-$#+&$#0$1$%*00&(&+'
(1'*+2
To replace the main fuse:
1. ]nplug the mains cable from the input soc7et.
2. Qry open the fuse holder and remove the fuse.
3. Replace the fuse with one of the same type and rating. The fuse rating is listed on serial number label.
4. Close the fuse holder and replace the mains cable.
P O W E R S U P P L Y F U S E S
There are two fuses for the lowKvoltage power supplies located on the printed circuit board. If one or more of
the green d4Ds on the QCb does not light, one of these fuses may be blown. If all three d4Ds are lit, the
lowKvoltage power supplies are functioning correctly.
To replace the lowKvoltage fuses:
1. Disconnect the fixture from !C power.
2. Remove the leftKside yo7e cover (when loo7ing at the head in the text in the upright position from the
bac7 as indicated in the illustration) to access the QCb.
3. Carefully remove and chec7 the two fuses located in the bottom of the QCb (see iCircuit board
connectionsk on page 47). Replace as necessary with fuses of the same siLe and rating (see page 48).