12. Servicing
2. Carefully release the 4 lock-down screws, holding the DM D 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 t he center of the image a s follows (using tool R847204):
- Adjust the co ntrol Rb1 until the crossing of the center Red co nvergence pattern c oincides 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 t he center Red conv ergence pattern coincides with the Top
right/Bottom left diagonal line of the center Blue convergence pattern.
Rb1 adjustment
Rb2+Rb3 adjustment
Rb2 or Rb3 adjustment
Rb3: top image
Rb2: bottom image
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 con trol Rb3 for coincidences of the diagona l Red line of the Red c onvergence pattern with the B lue line of the B lue
convergence pattern in the center at the top of the image.
- Adjust the con trol Rb2 for coincidences of the diagona l Red line of the Red c onvergence pattern with the B lue line of the B lue
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 s ecure the position of the DMD as sembly 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
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