
MAINTENANCE
Symptom: The upper portion of the display is waving, tearing, or jittering.
Cause/Remedy: 1) This sometimes occurs when the source is a VCR or video signal. Change the sync mode by selecting the fast/slow sync option from
the Picture Adjust menu ( PIC 5 ).
Symptom: The upper or lower portions of the display are cut off.
Cause/Remedy: 1) A top or bottom blanking adjustment may be required. Select the appro- priate blanking adjustment option from the Picture Adjust Menu ( PIC ) then adjust the amount of blanking. Note: A 0% slidebar level indicates no blanking.
2)A phase adjustment may be required. Select Position from the Picture Adjust menu ( PIC ). Adjust position so that the entire picture is visible and centered.
Symptom: One side of the display is cut off.
Cause/Remedy: 1) A left or right blanking adjustment may be required. Select the appro- priate blanking adjustment option from the Picture Adjust menu ( PIC ) then adjust the amount of blanking. A 0% slidebar level indicates no blanking.
2)A position adjustment may be required. Select Position from the Picture Adjust menu ( PIC ). Adjust phase so that the entire picture is visible and centered.
3)The retrace time of the projector may be longer than the horizontal
| blanking time of the signal. Press UTIL 1 8 to change projector retrace |
| time to Short. |
Symptom: | Transitions between colors are fuzzy. |
Cause/Remedy: | 1) Convergence may require adjustment. Perform a convergence on the |
| selected source. |
2)The projector may not be optically aligned for the installation. Has the throw distance changed significantly since the last optical alignment? If so, have the projector
Symptom: | The display is very faint. | |
Cause/Remedy: | 1) | Contrast or brightness settings may be set too low. |
| 2) | The projection room may be too bright. Lower the intensity of |
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| projection room lighting. Reduce light reflections as much as possible. |
| 3) | The projection room walls and ceilings may be too reflective. Reflective |
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| ceilings, walls, and floors should be kept to a minimum. The best |
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| projection rooms are dark with matte finishing. |
4.6