Projection Operations
E-24
Auto Focus (AF)
At times, the projector may not focus properly when you press the [AF/AK] key. This can be
caused by local environmental factors, etc. If this happens, focus the image manually or try
performing the AF operation again. If you often need to adjust focus manually, perform the steps
under “To adjust Auto Focus”, below.
Note that the allowable distance for Auto Focus is less than that for manual focus.
To adjust Auto Focus
1.
Position the projector and screen so they are about 1.5 meters apart, and then press
the [
](power) key to turn on the projector.
z
Position the projector so it is pointed straight at the screen.
2.
Press the [AF/AK] key.
3.
Press the [KEYSTONE] key and then use the screen that appears to change the
vertical and horizontal keystone correction values to zero.
z
This step is not necessary if these values are already zero.
4.
Use the [FOCUS] keys to adjust focus manually.
5.
While the focus indicator is being projected, hold down the [ENTER] key for about five
seconds.
z
After about five seconds, the message “Focus operation successful.” or “Focus operation
failed.” is projected.
6.
If the focus operation fails, repeat the above procedure from step 2.
Auto Keystone Correction
Certain operational environments and other factors can make it impossible to achieve sufficient
accuracy when performing keystone correction.
If an image appears distorted after performing auto keystone correction check the sensors for
dirt and clean them if necessary. See the User’s Guide (UsersGuide_English.pdf) on the CD-
ROM that comes with the projector for more information.
If this does not solve the problem, try changing the position of the projector slightly or perform
manual keystone correction.
AF/AK at Short Projection Distances
Performing the AF/AK (Auto Focus, auto keystone correction) operation when there is sharp
angle and when there is only a short distance between the projector and screen can result in
the left and right edges of the image to be out of focus. If this happens, reduce the angle or
increase the distance between the projector and screen.
