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ViewSonic PJ501/PJ551 18
Maintenance
Lamp
To order a new lamp unit see page 26 for contact information and see Table 15 for part numbers.
The estimated lamp life is 2000 hours. Before replacing the lamp, turn the Power Switch OFF,
remove the power cord from the power outlet, and wait approximately 45 minutes until the lamp has
cooled.
CAUTION: The lamp may explode if handled at high temperatures.
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 1 0 :"OSD Messages" on page 21 and Table
11: "Indicator Messages" on page 21.
NOTE:
The LAMP indicator is also red when the lamp unit reaches high temperature. Before
replacing the lamp switch the POWER OFF, wait approximately 20 minutes, and switch the POWER
ON again. If the LAMP indicator is still red replace the lamp.
HIGH VOLTAGE
HIGH TEMPERATURE
HIGH PRESSURE
WARNINGS
• Dispose of the used lamp according to local regulations.
• Since the lamp is made of glass, do not drop the unit and do not scratch
the glass.
• Do not reuse the old lamp. This could cause the lamp to explode.
• If it is probable that the lamp has exploded (you have heard an explosive
sound), disconnect the power plug from the power outlet and ask your
dealer to replace the lamp. The lamp is protected by a cover glass, but in
rare cases the reflector and the inside of the projector could be damaged
by broken or shattered glass. Broken pieces of glass could cause injury.
• Do not use the projector with the lamp’s front glass covering removed.
Figure 10: Lamp Diagram
Lamp
Reflector Front glass