Martin RoboColor III Specifications download pdf (Page 13)

ERVICE

This section describes how to adjust the lamp for best performance and how to

change the default DMX mode setting. Refer all other service to a Martin

technician.

Warning! Disconnect the fixture from power before removing any cover.

LAMP ADJUSTMENT

Fine adjustment of the lamp position may improve performance. The lamp access

plate is held in place with 3 thumbscrews. The 3 Phillips screws on the access plate

are used to adjust the lamp. Turning these clockwise pulls the lamp towards the rear

of the lamp and vice versa.

1 Disconnect the fixture from power and allow it to cool.

2 Make a rough adjustment by positioning the lamp holder so that there is a

distance of 35 mm between the outside of the lamp socket plate and the inside

of the lamp access plate.

3 Set DIP-switch pins 8 and 10 on, set all others off, and turn on the fixture for

white light and open gobo. Allow the lamp to reach full brightness.

4 Center the hot-spot by turning one or more of the adjustment screws.

5 Make the distribution of light as even as possible by turning all of the screws

1/4 turn clockwise, making sure that the hot-spot remains centered. If the result

is better then repeat the procedure until there is no more improvement. If the

result is worse, then turn the screws 1/4 turn counter-clockwise a few times and

observe the result.

Note: It is important that the lamp is firmly in place in the lamp-holder at all times.

Make sure that this is the case, especially after you have made an adjustment

because the inner-rim of the parabolic reflector can dislodge the lamp, especially if

you use an excessive numbers of turns of the adjusting screws.

Note: The lamp is not a hot-restrike type, so you must wait approximately 10

minutes after having turned off the lamp before you can turn it back on again.

User.fm Page 13 Monday, April 17, 2000 11:22 AM

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Martin RoboColor III Specifications Page 13