Christie Digital Systems CX67, CX50, CX60 user manual Maintenance and Troubleshooting

Section 4: Maintenance and Troubleshooting

Symptom ' The display is jittery or unstable…

CAUSE/REMEDY:

1. If the display is jittery, or if it disappears and reappears erratically check that the source is properly connected and that its signal is of adequate quality for detection. For example, if the projector scans the default input for a signal to display, and poor quality or a source is improperly connected, the projector briefly and repeatedly attempts to display an image. If no source is connected, the “no signal” error message appears over a blank display. Correct the source connection.

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2.The horizontal or vertical scan frequency of the input signal may be out of range of the projector.

3.The sync signal may be inadequate. Correct the source problem.

4.The input signal type may conflict with the input module. Install/use the correct module for the source.

5.Pixel tracking and phase may need more adjustment.

The display is faint…

1.Check the settings under the Input Levels menu. Try using the Auto Input Level option.

2.Brightness and/or contrast may be set too low. Adjust as necessary.

3.Gamma setting may be inadequate. It is recommended that you use the default gamma setting from most sources.

4.The room may be too bright. Limit the amount of light reflecting off the screen.

5.Ensure the projector is not too far from the screen.

6.Is the screen being viewed from the best angle? Check seating plans and viewing angles.

The display is reversed and/or upside down…

1.Image orientation is not set correctly. Access Image Orientation in the Configuration menu and select the option to suit your installation. See Section 2.

Portions of the display are cut off or warped on the opposite edge…

1.Resizing may need some adjustment. Adjust until entire image is visible and centered.

2.Check 6-axis adjustments.

The display appears compressed or stretched…

1.The frequency of the pixel sampling clock is incorrect for the current source.

2.Size and Position options may be adjusted incorrectly for the incoming source.

The image appears to drift from good to bad and visa versa…

1.The operating temperature of the projector may be fluctuating. Watch that the projector is not located too close to heating/air conditioning vents.

2.The source input signal may be of low quality.

3.The horizontal or vertical frequency of the input may have changed at the source end.

Symptom ' The display has suddenly frozen…

CAUSE/REMEDY: 1. You may have accidentally pressed the Freeze key on the keypad. Press Freeze again or press Exit to cancel the function.

RPMX/CX50/CX60/CX67 User’s Manual 4-9