Christie DHD675-E, Service Manual

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Section 3: Service Setup
E Series 675/775 Service Manual 3-15
020-000546-04 Rev. 1 (04-2017)
3. If boresight is required, see the image on the right to
understand how the adjustment screws on the lens
mount affect the corresponding cross-hairs on the
test pattern.
4. Adjust the appropriate cap screw to fine tune the
focus of cross-hair pattern I. Adjust until the cross-
hair image is in focus with minimal flare.
5. Adjust cross-hair pattern II, by adjusting the
appropriate cap screw. Adjust until the image is in
focus with minimal flare.
6. Adjust cross-hair pattern III, by adjusting the
appropriate cap screw. Adjust until the image is in
focus with minimal flare.
7. Repeat steps 4 to 6 until all three cross-hair patterns
are equally focused. If the boresight does not
converge to an acceptable level of image quality or if
the lens does not focus over the correct range of
throw distances, then the boresight requires coarse
adjustment as described in step 8.
8. The original factory boresight can be recovered
approximately by adjusting the 3 cap screws until the
marks on the smaller and larger gears match up or are
close to each other.
9. If further action is required. Repeat step 2.