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2. Carefully release the 4 lock-down screws, holding the DMD unit onto Prism frame.
Tip:
Release the lock-down screws in a way the DMD assembly becomes slightly movable. Keep in mind that at the end of
the re-convergence, tightening the DMD unit can cause some small convergence drift.
3. Start the re-convergence in the center of the image as follows (using tool R847204):
-
Adjust the control Rb1 until the crossing of the center Red convergence pattern coincides with the Top left/Bottom right diag-
onal line of the center Blue convergence pattern.
-
Adjust the control Rb2 & Rb3 simultaneously until the crossing of the center Red convergence pattern coincides with the Top
right/Bottom left diagonal line of the center Blue convergence pattern.
Image 12-27
4. Continue with re-converging the center at the Top and the Bottom of the image as follows (using tool R847204):
-
Adjust the control Rb3 for coincidences of the diagonal Red line of the Red convergence pattern with the Blue line of the Blue
convergence pattern in the center at the top of the image.
-
Adjust the control Rb2 for coincidences of the diagonal Red line of the Red convergence pattern with the Blue line of the Blue
convergence pattern in the center at the bottom of the image
5. Because the different adjustments interact, step 3 and 4 have to be repeated until full coincidence of both convergence patterns
is obtained.
6. Carefully secure the position of the DMD assembly by tightening the 4 lock-down screws.
7. Is the projector an FLM HD projector?
If yes, Secure the 4 screws on the heat pipes for red and green (Cr an Cg).
R59770091 DP-1500 06/01/2009
Rb1 adjustment
Rb2+Rb3 adjustment
Rb2 or Rb3 adjustment
Rb3: top image
Rb2: bottom image
12. Servicing
119
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