
Maintenance and Troubleshooting
Table 5-1.  Troubleshooting Chart (continued)
| Symptom | Possible Cause(s) | 
 | Solution | 
| 
 | 
 | 
 | |
| Image geometry is incorrect. | • Incorrect aspect ratio | • Select the aspect ratio that | |
| 
 | selection. | 
 | best matches the source | 
| 
 | 
 | 
 | image and screen size | 
| 
 | 
 | 
 | (refer to Table  | 
| 
 | • Image height may need | • | Adjust displayed image | 
| 
 | adjusting | 
 | height (refer to Output | 
| 
 | 
 | Shift on page 67). | |
| 
 | 
 | 
 | 
 | 
| The projected image is | • The projector is not | • | Adjust the projection | 
| trapezoidal in shape. | perpendicular to the | 
 | angle. | 
| 
 | screen. | 
 | 
 | 
| 
 | 
 | 
 | |
| The projector will not turn | • The projector will not turn | • Wait two minutes until the | |
| back on after it was powered | on for two minutes after | 
 | LED at the front of the | 
| down, or the image | 
 | DHD Controller turns red. | |
| disappears during operation. | the lamp. | 
 | 
 | 
| 
 | • The lamp has failed or | • | Replace the lamp. | 
| 
 | reached its usage limit of | 
 | 
 | 
| 
 | 2000 hours. | 
 | 
 | 
| 
 | 
 | 
 | 
 | 
| Runco  | 77 |