Lubrication; Replacing Fuses - Martin MAC 250 Krypton User Manual

Lubrication

Use only silicone lubricant, Martin P/N 37302003 (500 ml) or P/N 37302004 (200 ml, in applicator bottle).
No other lubricant is approved for use. When applying lubricant, always remove excess and do not get oil
on other parts.
1 Check the focus mechanism and apply a drop of lubricant to the 3 metal slides if movement is rough.
2 Lubricate the rotating-gobo bearings if movement is rough on slow rotation or if they become noisy. Apply a
few drops of oil to each bearing from the lamp side of the wheel.

Replacing fuses

M A I N F U S E
The main fuse holder is built in to the mains input socket. Never replace the fuse with one of a different
rating!
1 Unplug the mains cable from the input socket.
2 Pry 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 low-voltage power supplies located on the printed circuit board. If one or more of
the green LEDs on the PCB does not light, one of these fuses may be blown. If all three LEDs are lit, the
low-voltage power supplies are functioning correctly.
Have the fixture serviced by a Martin service technician if the problem persists.
1 Disconnect the fixture from AC power.
2 Remove the left-side yoke cover (when looking at the head in the text in the upright position from the back
as indicated in the illustration) to access the PCB.
3 Carefully remove and check the two fuses located in the bottom of the PCB (see "Circuit board connections"
on page 36). Replace as necessary with fuses of the same size and rating (see page 37).
4 Re-attach the yoke cover.
Service 25