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3M
™
Multimedia Projector MP8640 © 3M 1997
6.3 Lamp
The following symptoms may indicate a lamp in need of replacement:
• A dark picture.
• LAMP indicator lights up red.
• "CHANGE THE LAMP" message appears on the screen.
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Replacing the Lamp
Warning: Always turn off and unplug projector when
changing lamp.
Warning: Lamp and adjacent metal parts become
extremely hot and can cause severe burns to your
fingers. Allow the projector to cool for at least 30
minutes before replacing the lamp.
6.3.1 Remove lamp access door: The lamp access door is located
on the bottom of the machine on the right side. Use a flathead
screwdriver to unscrew the cover retaining screws and gently
open the cover and set it aside..
6.3.2 Retaining screws: Use a standard screwdriver to unscrew
the lamp module retaining screws.
Note: There are three lamp module screws that must be
loosened. These screws are self-containing screws that
cannot be removed from the lamp module.
Display Lamp Operation Hours
If there is a need to determine the lamp operation hours, follow these steps:
a) While the projector is running, press and hold the timer button on the remote control for 3 seconds.
b) The operating time of the lamp will be displayed. If the operating hours are greater than 1,900 the
"CHANGE THE LAMP" message will appear. If the hours are greater than 1,980 the following
message will appear, "POWER WILL SHUT OFF IN
20 HOURS" The number of hours left until
shut down will decrease until
0 hour is reached, then power will be turned off.
Note: After 2000 hours, the projector will only run for 10 minute intervals when restarted until the lamp is
replaced and the lamp timer is reset.
c) To reset the timer, press the reset button and select
0 (or CANCEL). The "CHANGE THE LAMP"
message will not come up if the timer is reset.