Canon LV-7490 Manuel

66

 No image 

– Check the connection between your computer or video      

 

   

   equipment and the projector. See pages 16-18. 

   

– See if the input signal is correctly output from your computer.     

   

   Some laptop computers may need to change the setting for     

                                                            monitor output when connecting to a projector. See your   

 

   

   computer’s instruction manual for the setting.  

   

– It takes about 30 seconds to display an image after turning on     

   

   the projector. See page 20.

   

–  Check the Input signal, color system, video system or computer 

system mode.

   

– Make sure the temperature is not out of the specified Operating   

   

  Temperature (41˚F–95˚F [5˚C–35˚C]).

   

– When 

Blank is operating, the image cannot be displayed.   

 

                                                            Press the BLANK button or any other button on the 

                                                            remote controller.
 No sound 

– Check the audio cable connection from audio input source. 

   

– Adjust the audio source. 

   

– Press the VOLUME + button. See page 26. 

   

– Press the MUTE button. See page 26.

   

– When the AUDIO OUT is plugged-in, the projector's built-in   

 

                                                            speaker is not available. 

 

 

 

 

   

– Is the image projected? You will hear the Computer and VIDEO   

   

  sound only when the image is projected.

 The color is strange. 

– Check the Input signal, color system,video system or computer   

   

   system mode. 

 

 

 

 

 

   

– Make sure the 

Blackboard is not selected on Image select  

 

   

  menu. See pages 34, 41.

 Some displays are not seen  

– Check the Display function. See page 48. 

 

during the operation. 

 

Auto PC adjustment function  – Check the Input signal. Auto PC adjustment function can not    

  

does not work.                                 work when 480p, 575p, 720p, 480i, 575i, 1035i or 1080i is     

   

   selected. See page 31.                                                                 

 

The setting does not remain  

– Make sure you selected 

Store after adjusting setting. Some  

 

  

after turning off power. 

  settings can not be stored if not registered with 

Store. See            

   

   pages 35, 43.

 

Power management mode 

– Power management mode function can not work while 

Freeze    

  or 

BLANK function is running. See page 51. 

 

Capture function does – Check the connection and the input signal to see if there is              

 not work. 

   signal.

 

Auto setup does not                      – Make sure Off is not selected at any function of Auto setup.  

            

 

work properly.                                   See page 47.  

 

 

 

 

 

   

– Make sure 

On is not selected at the Ceiling function.   

 

                                                             See pages 37, 45. 

 

 

 

 

               

 Auto keystone function does not  – Make sure the Auto keystone function is not set to Manual.           

 

work even when the projector is      Press the AUTO SET button on the top control. See            

 

  

tipped.                                                pages 25, 47.