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8. Remove the four screws (3mm) securing the bottom cover/fan assemblies to the base (Figure 5-17).
9. Pull fans off the bottom cover's rubber isolators.
10. Reverse instructions to re-install the bottom cardcage fans. Use needle-nose pliers to pull the rubber
isolators through the fan mounting holes.
5.7
Feet
hold-down bracket if using the optional rack stand, is
MANDATORY in any installation. Ensure the strap is in
place during replacement of the projector's feet to prevent
the projector from tipping. Keep 3 of the projector's feet
on the table at all times!
(Estimated Replacement Time: 12 minutes average between
front and rear + 30 minutes for tweaking image)
1. Using a 19mm wrench, loosen the foot lock nut (Figure 5-18).
2. Loosen the foot until it is no longer engaged in the baseplate.
Remove.
3. Replace feet repeating instructions in reverse. In some cases, the
displayed image will require some tweaking to display correctly.
5.8
Illumination Optics and Liquid Cooling Compartment
5.8.1 Cold Mirror
the edges only. Fingerprints left on the surface can negatively impact a displayed image.
(Estimated Replacement Time: 30 minutes + 1 hour calibration)
The cold mirror is the first bend in the optical path within the IOS. It's easy to access and simple to replace.
1. Remove the front top lid. See
2. Remove the light sensor module. See
3. Loosen the two, 3/32" screws from the bottom tab securing the cold mirror.
4. From the other two tabs, loosen one
3/32" screw from each and remove
one 3/32" screw from each. This
allows the tabs to be swung out of
the way without fully removing
them (Figure 5-20).
5. Wearing the clean, lint free gloves
provided in the service kit, carefully
slide the cold mirror out.
D4K25 Service Manual
020-100880-01 Rev. 1 (06-2012)
Use of the projector's rear safety strap, or
Wear clean lint-free cotton gloves when handling the cold mirror and handle by
5.4.2 Front Top Lid, on page
Section 5: Parts and Module Replacement
5-5.
5.8.5 Light Sensor Module.
Figure 5-19 Reflective vs. Non-Reflective Surfaces
Figure 5-18 Loosen
Projector Foot
5-15
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