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ViewSonic PJ750 17
MAINTENANCE
Lamp
Contact your dealer before replacing the lamp.
See the item “Optional Parts” in Table 12.
Before replacing the lamp, switch power OFF, remove the power cord from the power outlet, and
wait approximately 45 minutes until the lamp has cooled. The lamp may explode if handled at high
temperatures.
WARNING:
• For disposal of used lamp, treat according to the instruction of community authorities.
• Since the lamp is made of glass, do not apply shock to it and do not scratch it.
• Also, do not use old lamp. This could also cause explosion of the lamp.
• Premature lamp failure MAY be caused by an electronic component in the projector and not
necessarily the lamp. If unsure contact your local service center.
• If it is probable that the lamp has exploded (explosive sound is heard), disconnect the power plug
from the power outlet and ask your dealer to replace lamp.
• The lamp is covered by front glass, but, in rare cases, the reflector and the inside of the projector
may be damaged by scattered broken pieces of glass. Broken pieces could cause injury when
being handled.
• Do not use the projector with the lamp cover removed.
Lamp Life
Projector lamps have a finite life. The image will become darker, and hues will become weaker, after
a lamp has been used for a long period of time. Replace the lamp if the LAMP indicator is red, or the
CHANGE THE LAMP message appears when the projector is switched ON. See Table 9 on p. 20
and Table 10 on p. 21.
NOTE:
• The LAMP indicator is also red when the lamp unit reaches high temperature. Before
replacing the lamp, switch power OFF, wait approximately 20 minutes, and switch power ON again.
If the LAMP indicator is still red, replace the lamp.
HIGH VOLTAGE
HIGH TEMPERATURE
HIGH PRESSURE
Lamp
Reflector Front glass