ViewSonic PJD5112 Service Manual page 12

The lamp contains mercury. If the lamp bursts during operation ventilate the area
sufficiently to avoid inhaling harmful mercury fumes.
Use the lead below 200 C to prevent a deterioration of cladding clad of the
fluorocarbon resin.
The lead wire insulation clad shouldn 't touch the reflector.
Exchange the lamp that has already passed the life time immediately.
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