Remove And Replace The Color Wheel Assembly - InFocus ScreenPlay 7205 Service Manual

Remove and Replace the Color Wheel Assembly

The color wheel assembly includes the glass color wheel, a motor and an ECA. The assembly mounts to
the side of the metal optical engine. The color wheel ECA connects to the controller ECA via a removable
color wheel cable and by a ribbon cable that is hardwired to the color wheel ECA.
After replacing the color wheel, you must confirm whether the color wheel requires calibration. Calibration
instructions follow this procedure.
WARNING The color wheel is made from glass and is extremely fragile. If it breaks, the glass shards are sharp
and can cut your fingers. When working with the color wheel, take care not to scrape it against the
metal portions of the optical engine. Handle the color wheel only by the motor. Do not touch the glass
with your fingers. Ccontamination from oil on the fingers can cause hot spots on the color wheel,
which could lead to breakage.
8 Remove the optical engine.
9 Place the optical engine on a soft, ESD-protected surface.
10 Unplug the color wheel cable from its connector on the color wheel ECA.
11 Remove M3x8 Torx screw with washer that fastens the color wheel shroud to the engine. There is
only one screw at the top of the shroud. A tab that fits into a slot in the engine secures the bottom
of the shroud.
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