Martin MAC 300 User Manual page 20

If the control panel does not work, boot mode can be engaged by
moving jumper PL121 on the main circuit board to pins 1 and 2 as
follows.
1. Disconnect the fixture from AC power. Remove the plas-
tic cover from the arm opposite the side with the visible
motor.
2. Move jumper PL121 to pins 1 and 2 (hard boot set-
ting). See also the diagram on page 25.
3. Perform a boot-mode upload as described in the uploader manual.
4. Disconnect the fixture from AC power. Move the hard boot jumper back to the normal setting and
replace the cover.
C h a n g i n g l e n s e s
A wide angle diffusion "lens" is available for the MAC 300. The diffuser gives the MAC 300 a 59° beam angle. If the
frost filter is fully applied, the beam angle is 67°. Photometric data for this option is available at http://www.martin.dk/
service/Photometrics/MAC300-wide.htm.
The kit may be ordered by P/N 91610016, "Wide angle diffuser lens kit for MAC 300." To change lenses:
1. Disconnect the fixture from AC power. Remove the top head cover.
2. From the outside of the bottom head cover, remove the screw that holds the lens in place.
Remove the lens.
3. Install the new lens in the same position as the old one, in the inside lens slot.
4. Replace the screw to secure the new lens. Replace the top head cover.
20
Basic Service
È
PIN 1 PIN 1
PL121
normal setting hard boot setting
Figure 8: Hard boot jumper
È
PL121