Before Convergence - Christie CP42LH Service Manual

Before convergence

• Make sure image zoom and centering is complete.
• Make sure boresight procedures are completed.
• Turn the lasers on.
• Allow the projector to warm up for 15 minutes to reach nominal operating temperature.
• During convergence, the lid and/or filter side of the projector is open, causing decreased prism
cooling performance and possible shifts in convergence or DMD focus. The prism temperature
must be monitored during the adjustment and kept within a few degrees of the nominal
temperature achieved above by lowering the laser power or periodically replacing the cover for
a cool-down.
• If the procedure takes longer than an hour, watch for over-temperature alerts. Replacement of
the lids and covers may be necessary.
• Typically the blue image component can be used as the fixed reference, so no adjustment is
required. However, if you need to adjust the blue image component it is easy to adjust, but the
side panel must be removed. The recommended normal convergence adjustments are from
green to blue and red to green.
• Christie recommends that the vertical and rotation adjustment be done first, as they work
dependently together, and the horizontal adjustment done last.
• Use extreme caution to not damage any electronic components.
• Do not force the adjustment, the card should move easily with gentle pressure.
Evaluate convergence
1. Display either the Alignment Pattern or the Framing Pattern.
The framing pattern may not be installed on the projector in some cases. Keep a copy of this
pattern on your computer and load it to the projector you are working on if not present.
2. Zoom and focus the image to see the entire outer edge of the test pattern frame.
CP42LH Service Manual
020-101686-03 Rev. 1 (08-2016)
Adjust the Image
32