II M P OR T A N T
Writedown your setting values beforeadjusting any of the settings in the following procedure.
gTo resolveyour unstable or flickering image
1. Adjustthe Tracking setting in the on-screendisplay. See Image Adjustment menuon page 12.
2. Optionally,reset the projectoras described in Resetting the projectoron page 46 to adjust the
trackingto its originalvalue.
II M P OR T A N T
Thisaction resets all values to t heirdefaults.
Yourimage has a vertical flickeringbar
If the projectordisplays a vertical flic keringbar, you could have differentfrequency settings on your
inputsource.
II M P OR T A N T
Writedown your setting values beforeadjusting any of the settings in the following procedure.
gTo resolvethe vertical flickering bari ssue
1. Adjustthe Frequency setting in the on-screendisplay. See Image Adjustment menuon page
12.
2. Checkt hedisplay mode of your computer’s graphicscard. Make sure it matches one of the
projector’scompatibles ignalformats (see Video format compatibility on page23). Refer to your
computer’smanualf ormore information.
3. Configurethe display modeof y ourcomputer’s graphics cardto make it compatiblewith the
projector.Refer to your computer’smanual for moreinformation.
4. Optionally,reset the projectoras described in Resetting the projectoron page 46 to adjust your
frequencyto its original value.
II M P OR T A N T
Thisaction resets all values to t heirdefaults.
Unalignedprojectedimage
TheSMART UF75 projector imagecan sli p if the projectoris movedoften or installedin a location
proneto vibration,s uch as next to a heavy door.Follow t heseprecautions to help preventthe image
CH A P T E R 6
Troubleshootingyour interactive whiteboard system
44