Adjustment Procedure - Christie CP2230 Service Manual

3.5.4 Adjustment Procedure

1. Check that all three adjustment screws are not loose – gently turn them until they make contact with the
FIP plate, but do not tighten them. This prevents the unit from springing farther out of adjustment when the
lockdown screws are loosened.
2. "Break" a lockdown screw loose so that it feels loose (requires minimal and equal effort to turn in either
direction) to the touch.
3. Turn the lockdown screw gently clockwise until you feel it make contact with the FIP plate again. You will
be leaving it loose, but allowing minimal motion away from the prism.
4. Repeat Steps 1 to 3 for the other three screws. This procedure is critical to allow the unit to move on the
X/Y axes (Left/Right, Up/Down, Twist) but NOT the Z axis (Focus). NOTES: 1) Leaving these screws
too tight will prevent the assembly from moving freely and possibly cause a cross-threaded adjustment
screw. 2) Leaving these screws too loose will cause the DMD to drift away from the prism causing the
color you are attempting to adjust to fall out of focus relative to the other two making it very hard to
achieve convergence.
5. Carefully converge the images to your reference color using the guidelines for the Red, Green, Blue
formatters. Refer to
3.5.6 Blue Formatter Convergence Adjustment, on page
6. When satisfied with your adjustments (see
tighten the lockdown screws in a "torque pattern" using Figure 3-12 as an example:
a. Start with the hardest to reach lockdown screw (Figure 3-12/1) to help keep your adjustments set.
b. "Snug" that screw approximately 1/16th of a turn, then move to the screw in the opposite corner
(Figure 3-12/2) and snug it 1/16th of a turn as in Figure 3-12.
c. Continue the process by moving to the opposite side
(Figure 3-12/3), 1/16th of a turn and so on, (Figure 3-
12/4) repeating the pattern until the four screws are
tight. Generally about a full 1/2 turn past the
adjustment loosened position or around 8 inch/pounds
of torque. NOTE: If you are uncomfortable with the
ability to achieve 8-inch/pounds of torque by feel; a
torque driver should be used. An approved driver is
included in the kit, outlined in Using the Christie
Convergence Tool Kit (P/N: 013-100074-xx).
• Be careful not to bump or flex any of the hoses or cables
while tightening these screws as your adjustment may be
adversely affected.
• No matter how careful you are, tightening the lockdown
screws may throw your adjustments off slightly. Evaluate
how it is moving and compensate before you lock it
down. The more carefully and incrementally you tighten
the lockdown screws, the less this is likely to happen.
CP2230 Service Manual
020-100562-06 Rev. 1 (05-2016)
3.5.5 Red/Green Formatter Convergence Adjustment Description, on page 3-12
3.5.7 Final Convergence Assessment, on page
Section 3: Service Setups
3-14.
Figure 3-12 Torque Pattern
and
3-16), carefully
3-11