Refilling The Coolant - Christie Cinema 4K-RGB Service Manual

2. On a tripod in front of the lens, set up an illuminance meter (such as the Konica Minolta T10
Illuminance Meter) positioned in the center of the projection beam sent to the screen.
The illuminance meter must be facing the lens.
3. Navigate to the laser power setting page, and decrease the red laser power to low (30% to
40%).
4. Set the green and blue laser power levels to 0.
5. Turn on the light source.
6. Display a white test pattern on the screen.
7. Wait one minute for the lasers to stabilize.
8. Remove the electronics-side cover.
9. Adjust the LOS coupling mirrors independently to maximize the lux reading on the illuminance
meter.
Only small adjustments are necessary. You can use a small 2.5 mm flathead screwdriver bit.
10. Remove the illuminance meter from in front of the light beam and adjust the blue and green
power levels to achieve a DCI white point, as measured by the color meter.
Make sure the red laser power is still set to low.
11. Visually check for uniformity and fine tune the optical adjustments.
12. Once the adjustment is complete, adjust the laser power to the preferred level.
13. Re-install the electronics-side cover previously removed.
14. Proceed to adjusting the integrator rod and fold mirror (on page 22).

Refilling the coolant

Cinema 4K-RGB projectors rely on liquid coolant to maintain the laser optical subsystem at the
required operating temperatures. The following provides service instructions and safety precautions for
filling the reservoir unit and handling coolant.
Caution! If not avoided, the following could result in minor or moderate injury.
• Use protective eye wear and gloves. Follow workplace guidelines for using personal protective
equipment when installing, cleaning, and servicing the product.
Notice. If not avoided, the following could result in property damage.
• Do not attempt to fill the coolant reservoir when it is installed in the projector chassis.
• Fill the coolant to the recommended level only. Do not fill above the maximum level line shown
on the reservoir unit.
1. Remove the coolant reservoir (on page 62).
2. Ensure the coolant reservoir unit is placed on a separate surface.
3. Use a flat-head screwdriver to open the top cap on the reservoir fill port.
4. Pour the required coolant (Koolance LIQ-740PR P/N: 003-005179-XX) into the fill port.
Monitor the fill indicator on the reservoir and fill only to the recommended level.
5. Re-install the top cap on the reservoir fill port.
6. Tighten the top cap to seal it.
7. Use a soft cloth to wipe away any coolant that drips outside the reservoir.
Cinema 4K-RGB Service Guide–CP4315-RGB, CP4320-RGB, CP4325-RGB, CP4330-RGB
020-102713-06 Rev. 1 (08-2022)
Copyright © 2022 Christie Digital Systems USA, Inc. All rights reserved.
If printed, please recycle this document after use.
Service setups
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