ViewSonic PJ750 21
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Remote Control Batteries
Replace the batteries when the remote control unit becomes difficult to operate (such as slow
response when you push a button). Use 2 AA batteries as shown in Figure 8 below.
To replace the batteries:
1Pull the plastic tab from the battery access door when using the new projector for the first time.
2Push the tab on the bottom of the remote unit and remove the battery cover.
3Gently remove the batteries from the holder and replace them with new batteries.
4Ensure that the positive and negative terminals (+ / -) are positioned correctly.
5Push the battery cover into place. The cover should click into place.
Cleaning Instructions
Projector Lens
Clean the lens with a damp, non-abrasive cloth. Apply a lens cleaning solution or a glass cleaning
solution to the cloth. Do not spray a cleaning solution directly onto the lens.
Projector Case
Make sure the projector is cool before cleaning. Clean the exterior case with a moist cloth using a
mild detergent.
WARNING: Do not use alcohol, benzene, or other chemical cleaners which could damage the case.
Air-Filter
Clean or replace the air-filter after every 100 hours of use to prevent overheating, which could
damage the projector.
1Make sure the projector is cool and the power cord is unplugged before beginning.
2Vacuum the air-filter.
WARNING: Never operate the projector without the air-filter; doing so will damage the projector.
Figure 8: Installing the Batteries