Christie CP2000-M User Manual download pdf (Page 46)

Section 2: Installation & Setup

CP2000-SB User Manual 2-29

020-100162-04 Rev. 1 (05-2009)

2.9 Fold Mirror and Convergence Adjustments

In rare instances, shipping and handling may affect the precise factory alignments of one or more optical

components—as a final step of installation, the installer may have to adjust the fold mirror and/or convergence

of the DMDs as described here.

Fold Mirror Adjustment

If a corner or edge of the image is missing, this may indicate that the fold mirror has become misaligned with

the rest of the optical system, resulting in cropping of data. Correct as described below:

Remove the fold mirror access plate from the underside of the projection head—this plate is located just below

the lens. Two access holes will be revealed, through which you can adjust two fold mirror screws:

• To raise or lower the image - adjust the screw closest to the operator’s side.

• To move the image left or right - adjust the screw furthest from the operator’s side.

DMD Convergence

A convergence problem is evident when one or more projected colors (red/green/blue) appears misaligned

when examined with a proper convergence test pattern—where normally the 3 colors should overlap precisely

to form pure white lines throughout the image, one or more poorly converged individual colors may appear

adjacent to some or all of the lines. Qualified service technicians can correct as described on the color label

provided inside the projection head.

Figure 2-45 Fold Mirror Adjustment

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Christie CP2000-M User Manual Page 46