Add Auxiliary Lens; Fold Mirror And Convergence Adjustment; Fold Mirror Adjustment; Dmd Convergence - Christie CP2000-XB Setup Manual

Section 2: Installation & Setup

2.11.5 Add Auxiliary Lens

If present, swing the auxiliary lens in position in front of the primary lens. It should magnify in the horizontal
direction only, stretching the image straight across the screen—this requires that its aperture (visible within the
lens) be vertically aligned with the screen. If the image appears skewed, loosen the locking ring on the
auxiliary lens and rotate the lens as necessary until the wide image is horizontal.
FOCUS PRIMARY LENS: With the auxiliary lens in place, re-focus the primary lens using focus knob. The
goal is good focus at center and on all sides.
FOCUS AUXILIARY LENS: If horizontal focus in the image needs improvement, focus the auxiliary lens
too—rotate its barrel as needed.

2.12 Fold Mirror and Convergence Adjustment

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:
Locate the fold mirror access plate secured to the underside of the projection head, just below the lens. It has 2
access holes along the front edge, through which you can carefully adjust the fold mirror screws:
• To raise or lower the image, adjust the screw closest to the left side
(exhaust side of projector).
• To move the image left or right, adjust the screw closest to the right
side (lamp side).
Proper fold mirror adjustment is shown at right, with the whole image well
centered between the projected edges of the integrator. NOTE: Use full
white test pattern.

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. NOTE: Custom Convergence Kit required (available separately).
2-28
Figure 2-43 Fold Mirror Adjustment
Figure 2-44 Proper Fold
Mirror Adjustment
CP2000-XB Setup Guide
020-100250-02 Rev. 1 (06-2009)