Display Is Not Rectangular; Display Is "Noisy; Display Has Suddenly Frozen; Data Is Cropped From Edges - Christie CP4230 Service Manual

Section 4: Troubleshooting

4.5.7 Display is Not Rectangular

1. Check the leveling of the projector. Ensure the lens surface and screen are parallel to one another.
2. Check the vertical offset. Adjust as necessary using the vertical offset knob or ILS.
3. Check that the anamorphic lens is straight. Rotate to orient aperture correctly.
4. Check the screen file. For more information, refer to the CP4230 User Manual (P/N: 020-100621-xx).

4.5.8 Display is "Noisy"

1. Display adjustment at your input source may be required. From a DVD player or an input module setting,
adjust pixel tracking, phase and filter. Noise is particularly common on YPbPr signals from a DVD player.
2. The video input may not be terminated. Ensure the video input is terminated (75 ohms). If it is the last
connection in a loop-through chain, the video input should be terminated at the last source input only.
3. The input signal and/or signal cables carrying the input signal may be of poor quality.
4. If the distance between the input source device and the projector is greater than 25 feet, signal amplifica-
tion/conditioning may be required.
5. If the source is a VCR or off-air broadcast, detail may be set too high.

4.5.9 Display has Suddenly Frozen

If the screen blacks out inexplicably, it is possible that excessive voltage noise on the AC or ground input has
interrupted the projector's ability to lock on to a signal. Power down the projector and then power back up
again.

4.5.10 Data is Cropped from Edges

To display the missing material, reduce image size to fill the display area available in the projector, then stretch
vertically to fill the screen from top to bottom. Add the anamorphic lens to regain image width. Cropping could
also be due to the screen file selected that has cropping configured. In both scenarios, refer to the CP4230 User
Manual (P/N: 020-100621-xx) for more information.

4.5.11 The Projector is ON, but There is No Image

1. Ensure AC power is connected.
2. Make sure the lens cover is removed from the lens.
3. Make sure the douser is OPEN.
4. If the lamp is not ignited, tap the
Not Ignite, on page
5. Ensure the correct channel is selected with the appropriate configurations in the Channel Setup: Config 1
window.
6. Ensure an active source is connected properly. Check the cable connections and make sure the alternative
source is selected.
7. Can you access test patterns? If so, check your source connections again.
4-6
LAMP ON
4-2.
button. If the lamp does not strike, refer to 4.2.1 Lamp Does
CP4230 Service Manual
020-100622-04 Rev. 1 (05-2016)