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Troubleshooting 1

Martin University MAC 2000 Service Seminar

TROUBLESHOOTING

GENERAL

FIXTURE DOES NOT RESET

Blown fuse: LEDs on the printed circuit board light up to indicate the power supplies are

working. Check / replace the fuses on the circuit board if one or more of the LEDs is not lit.

Sensor connection reversed: MAC 2000 will not reset properly if any of the Hall sensor

connections for the gobo wheels, gobo rotation, color wheel, effect wheel, or effect rotation

are reversed.

FIXTURE RESETS BUT DOES NOT RESPOND TO THE CONTROLLER

Incorrect XLR pin-out: The XLR pin-out is DMX standard, i.e., pin-2 (-) and pin-3 (+).

The fixture will not respond if the polarity is reversed, for example, if the MAC 2000 is

connected after a PAL 1200 without a phase-reversing cable.

Failure in the link: Diagnosing link problems is beyond the scope of this seminar. See

Recommended Practice for DMX512, A Guide for Users and Installers, by Adam

Bennette, available from PLASA, Ltd. and USITT Inc.

SOFTWARE UPLOAD

The MAC 2000 is compatible with the MP2 Uploader and the ISA DMX interface card for

the LightJockey Club controller. Version 4.0 of the Martin Software Uploader Utility is

required.

FIXTURE DOES NOT ACCEPT SOFTWARE (CSER)

Corrupted software: The MAC 2000 may not respond to the uploader if the fixture

software is corrupted. It can be forced into upload mode by moving the jumper on the

motherboard at PL 103 to the “INIT” position.

CPU write protected: The jumper at PL 102 prevents software upload when it is in the

“UPLOAD DISA.” position. Move it to “UPLOAD ENA.”, which is the factory default

position.

Summary of content (7 pages)

PAGE 1
Martin University MAC 2000 Service Seminar TROUBLESHOOTING GENERAL FIXTURE DOES NOT RESET Blown fuse: LEDs on the printed circuit board light up to indicate the power supplies are working. Check / replace the fuses on the circuit board if one or more of the LEDs is not lit. Sensor connection reversed: MAC 2000 will not reset properly if any of the Hall sensor connections for the gobo wheels, gobo rotation, color wheel, effect wheel, or effect rotation are reversed.
PAGE 2
Martin University MAC 2000 Service Seminar MOTORS To avoid damage to the step drivers, always turn off the power before connecting or disconnecting the motors. The pan and tilt motors in the MAC 2000 are 3-phase stepper motors. All other motors are 2-phase steppers. Important! NEVER test 3-phase drivers with the Martin step drive tester! STEP MOTOR DOES NOT TURN, OR TURNS ERRATICALLY Burned-out step driver: Most step motor problems are due to a burned-out driver.
PAGE 3
Martin University MAC 2000 Service Seminar LAMP The lamp circuit is similar to other Martin discharge lamp fixtures such as the MAC 500. Note, though, that there are 2 thermo-switches in the lamp circuit and a door switch in the lamp relay circuit. LAMP DOES NOT STRIKE (LERR, HOT) The main reasons for lamp failure are a blown lamp, a hot lamp, and incorrect power settings. Discharge lamps become harder to strike with use - an incorrect power setting may not be immediately apparent.
PAGE 4
Martin University MAC 2000 Service Seminar Contaminated lamp: Oils from your fingers or other sources will burn into the glass envelope, weaking it and reducing performance. Defective ballast: Defective ballast can provide too much power to the lamp and result in shorter lamp life. LAMP CUTS OUT/ FIXTURE OVERHEATING (HTER, BTER) Incorrect power setting: See the user manual for proper setting information. Dust and dirt reducing air-flow: Clean the fixture, and check the air flow filters in the head.
PAGE 5
Martin University MAC 2000 Service Seminar ROUGH OR NOISY GOBO OR EFFECT SELECTION Belt too tight: Adjust tension. Loose wheel: A noisy wheel probably indicates that the screws connecting the wheel to the shaft adaptor are loose. Apply Loc-tite and tighten. ROUGH GOBO OR EFFECT ROTATION Worn, dirty, or dry bearing: Clean and lubricate the bearing with silicone lubricant. Replace the bearing if necessary.
PAGE 6
Martin University MAC 2000 Service Seminar VISIBLE IRIS GRAPHITE Excess graphite powder can accumulate at the edge of the iris blades and become visible in the projected image. This excess may be removed by blowing it away. Be careful though not to get the powder on lenses and other optical parts. FOCUS, AND ZOOM FOCUS OR ZOOM LENS LOSES STEP OR MOVES ERRATICALLY Defective motor or motor driver. Check motor, cables, and driver.
PAGE 7
Martin University MAC 2000 Service Seminar SHUTTER/ DIMMER RANDOM SHUTTER ACTION Bad connection: If there is a bad connection to the drive motors. Check that all wires are securely crimped in the connector. To avoid damaging the step drivers, always turn off the power before connecting or disconnecting motors. Loose adaptor: Check and tighten the adaptors on the dimmer blades. Bad motor: The dimmer may continue to work even if one of the motors is defective.