Nortel Networks 822p 用户手册

Selecting the image source lets you switch between images input from 
different pieces of equipment connected to the projector (such as a 
computer and DVD player). If you don’t see the image you want, 
press the 

Source Search

 button on the remote control or projector 

until the correct device image is projected. If a projected image fails to 
appear, see the next section for help.

Once you see your image, turn to page 38 for instructions on focusing 
and making other image adjustments. 

If you see a blank screen or a blue screen with the message 

No Signal 

after turning on your computer or video source, try the following:

■

Make sure the cables are connected correctly, as described in 
Chapter 1.

■

Make sure the P

Power

 light is green and not flashing and the 

A/V Mute

 slide is open. 

■

Make sure you’ve selected the correct image source; see the 
previous section. Allow a few seconds for the projector to sync up 
after pressing the button. 

■

Check the Signal menu to make sure the correct input source is 
selected. See page 54.

■

Hold down the 

Fn

 key and press the function key that lets you 

display on an external monitor. It may have an icon such as 

 

or it may be labelled 

CRT/LCD

. Allow a few seconds for the 

projector to sync up after pressing it. Check your laptop’s manual 
or online help for details. 

On most systems, the 

 or 

CRT/LCD

 key lets you toggle 

between the LCD screen and the projector, or display on both at 
the same time.