Replacing Fuses; Updating Software - Martin MAC 250 Wash User Manual

Replacing fuses

M A I N F U S E
The main fuse holder is built into the mains input socket.
Warning! Always replace the fuse with one of the same type
and rating!
To replace the main fuse:
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 the 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.
To replace the low-voltage fuses:
1. Disconnect the fixture from AC power.
2. Remove the left-side yoke cover (when looking at the head from the back with the text the correct way
up as in Figure 16) 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 34). Replace as necessary with fuses of the same size and rating (see "Fuses" on
page 36).
4. Re-attach the yoke cover.
If fuses blow repeatedly, have the fixture serviced by a Martin service technician.

Updating software

The latest MAC 250 Wash firmware is available from the support area of the Martin web site at
http://www.martin.com. It can be installed via the DMX data link using a supported Martin uploader such as
the MP-2, or via a LightJockey 4064 ISA DMX interface.
Note: Intermediate control systems such as the Martin Lighting Director (MLD) and the Martin Matrix must
be bypassed when updating fixture software via the DMX link. These systems do not relay the update code
correctly because it is not a DMX-compliant signal.
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Figure 16: Identifying and removing the left-hand yoke cover
MAC 250 Wash
Figure 15: Main fuse holder