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Christie CP4220 Instruction Sheet

Convergence
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Download this manual See also: User Manual, Setup Manual
INTRODUCTION
These instructions explain how to adjust convergence in the CP4220 and CP4230 projectors.
Information provided here supplements the main Convergence Instructions drawing provided inside
the top lid of the projector.
TOOLS REQUIRED
• 2.5 mm driver with heat-shrink tubing (2.0 inch and 6.5 inch lengths), included with projector. One
driver is located on the the high security lid and the other is located in the packaging.
INSTRUCTIONS
WARNING
ACCESSING THE LIGHT ENGINE
Remove the top lid to access to the light engine and liquid cooling system compartments.
Convergence Instruction Sheet
020-100703-01 Rev. 1 (05-2011)
CP4220/4230 Convergence
Convergence adjustment must be performed by a qualified service technician.
Instruction Sheet
1 of 10

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Summary of Contents for Christie CP4220

  • Page 1 CP4220/4230 Convergence Instruction Sheet INTRODUCTION These instructions explain how to adjust convergence in the CP4220 and CP4230 projectors. Information provided here supplements the main Convergence Instructions drawing provided inside the top lid of the projector. TOOLS REQUIRED • 2.5 mm driver with heat-shrink tubing (2.0 inch and 6.5 inch lengths), included with projector. One driver is located on the the high security lid and the other is located in the packaging.
  • Page 2 Remove the high security lid to access components in the light engine and cardcage compartments. NOTE: Only Christie authorized service technicians should open the high security lid. 3. Use the high security key to unlock the high security lid (Figure 2).
  • Page 3 CONVERGENCE OVERVIEW NOTICE! Do not run the projector while performing convergence with the Light Engine Fan Pack or the Cooling Duct removed. This will cause overheating of the Satellite Formatter Board FPGA’s. However, the fan packs can be removed for a short time to access the adjustment screws.

  • Page 4: Before Performing Convergence

    BEFORE PERFORMING CONVERGENCE • Make sure the image-zoom and centering is complete before performing convergence. For details, refer to 3.2 Integrator Alignment, on page 3-2, of the CP4220 and CP4230 Service manuals (P/N: 020-100691-xx/020-100622-xx). • Make sure boresight procedures have been completed before performing convergence.

  • Page 5: Evaluating Convergence

    EVALUATING CONVERGENCE 1. Display either the Alignment Pattern or the Framing Pattern (Figure 4). NOTE: The framing pattern may not be installed on the projector in some cases. Keep a copy of this pattern on your laptop and load it to the projector you are working on if it is not present. 2.
  • Page 6 4. Look for “twist” using the center vertical and horizontal lines – scan from one side of the screen to the other, observing any change in vertical position of the color in question relative to the point where you started. (Figure 6) is an example of a projector with two problems; Red is twisted counter-clockwise and Blue is high and to the left with no apparent twist.
  • Page 7 RED/GREEN/BLUE FORMATTER CONVERGENCE ADJUSTMENT Remove all jewelry (rings, watches, necklaces, braclets etc.) before adjusting convergence. NOTE: Do not apply excessive force on the adjustment screws. This might cause the convergence adjustment to become misaligned once you remove the adjustment tool. The Red and Green Formatters are identical in physical layout and adjuster function.
  • Page 8 • Remove the Light engine air filter and fan pack to access the blue convergence adjustment screws. For details, refer to 5.6.1 Light Engine Air Filter, on page 5-11 and 5.7.2 Light Engine Fan Pack (4 fans), on page 5-13 of the CP4220 and CP4230 Service manauls (P/N: 020-100691-xx/020- 100622-xx).

  • Page 9: Final Convergence Assessment

    • The horizontal adjustment screw is independent of the vertical and twist adjustments. Figure 9 Red/Green/Blue Formatter Horizontal Adjustments FINAL CONVERGENCE ASSESSMENT When should you be satisfied with your adjustments? Read the following section before coming to a conclusion (Figure 10). 1.
  • Page 10 c. Green and Blue should always be perfectly aligned to each-other (to within ¼ pixel total in one or a combination of directions.) Figure 10 Best Possible Convergence 2. In certain circumstances, there may be further tolerance deficiencies in the prism assembly in combination with the projection lens that will cause the normal Red over-sizing to become slightly non-uniform.

This manual is also suitable for:

Cp4230