XV-Z12000. Version 1.3 - Sharp Projector Handy Guide. Page 51

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When the DMD unit has been replaced
Note: DMD chip and Formatter PWB are supplied at the same
time, and an exchange only with DMD isn't done. Refer to
"REMOVING OF MAJOR PARTS" when exchanging
Formatter PWB.
There is no need to readjust the back focal distance of the
projection lens. If focusing is noticeably poor, however, make
this readjustment.
(1) Provide a distance of 2.4 m between the set and the
screen.
(2) Adjust the lens shift until the projection lens comes to the
same level as the centre of the screen.
(3) Detach the optical unit top cover A from behind the
projection lens.
(4) Loosen the four hex screws B in the back of the projection
lens.
(5) Adjust the zoom knob at the front of the projection lens to
“tele end” and ensure good focusing.
(6) Then adjust the zoom knob at the front of the projection
lens to “wide end”.
(7) Insert the adjustment screwdriver C (9EVDRIVERZ9000)
in the hole D at the back of the lens. Put the centre of the
screen in the best focus. (Preferably feed the SXGA signal for
1-dot white crosshatch pattern or 1-dot white dot pattern on
black background.)
(8) Move the zoom knob from “wide end” back to “tele end”
and see if focusing is ensured. If not, repeat the above steps
(5), (6) and (7) until the best focus is achieved.
(9) Tighten the four hex screws B to the torque of 0.3 Nm (3.06 kgfcm), and apply screw loctite to them.
(10) Attach the optical unit top cover A back into position. Finally fix the two screws E and apply screw
loctite to them.