Basic overhead projector instructions and tips

Basic Operation Instructions for all Overhead Projectors

• Place the projector on a flat, steady surface.

   

• The farther the projector is from the screen, the larger the image.
  Overheads with a standard 14" lens should be about 8 - 10 ft from the screen for a 6' wide image.

   

• Connect the power cord to an electrical outlet. If the projector is on a cart with an electrical extension, check the plugs for both the projector and the cart.
   
• Turn on the main power switch.

A projector with a 2-position switch (on/off) will have a thermostatically controlled fan. The fan keeps running after the switch is placed in the off position. *** Do not unplug the projector while the fan is running. *** Allow the projector to cool before moving it.

• Place transparency material on the platen (the glass plate on the top of the projector housing).

   

• Adjust the focus and the screen alignment.

Adjust Focus with the focusing knob. Most focusing knobs are attached either to the lens head or the arm. The lens head moves up or down the support post as the focusing knob is turned.
Adjust the image vertically on the screen by tilting either the head at the top of the arm or the mirror on the head. Adjust the image horizontally by moving the projector right or left.

• If the lamp burns out, the projector has a Quick Change Lamp lever. Some are easy to see, the one in this picture is well hidden. Look for an instruction sign on the projector, too.

Turn off the lamp. Find the lever. Move it to the opposite position. Turn on the lamp. See individual projector information for specifics. Call the Help Desk at 287-5050 for assistance or replacement lamp.

Special Instructions for Elmo HP-L3550 Deluxe Projectors

• Tilt Adjustment

• Quick Change Lamp

Turn power off. Slide the quick change lever located on the front of the projector to the left or the right. Call the Help Desk when the Quick Lamp Change has been used so a new spare lamp can be installed.

Special Instructions for Elmo HP-L355 Deluxe Projectors

• Tilt Adjustment

The front legs of this projector also serve as tilting adjustments for a clearer image if the screen is not adjustable for keystoning. The legs adjust independently.

• Quick Change Lamp

Push the quick lamp-change lever on the bottom front of the projector slightly backward and slide it sideways.   Don't use the Lamp Brightness Control. The knobs are removed.

• Call the Help Desk (287-5050) to report changing lamp so a new lamp can be installed.

rev.12/16/05
 

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