Chapter 20

Preventive Maintenance and Troubleshooting

Inanimate objects can be classified scientifically into three major categories; those that don’t work, those that break down and those that get lost.—Russell Baker, Pulitzer Prize-winning newspaper columnist

When automated lighting systems were in their infancy, two things were certain: they were sure to impress and they were sure to break down. The MARC 350 lamp, which was originally designed for 16-mm movie projectors, was a popular lamp source for automated lighting in the early 1980s because it has an integral dichroic reflector, a high color temperature, and a relatively small arc. But it also required the use of an electronic switching power supply, which, at the time, proved to be ...

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