Adjusting The Focus - Sharp LC-R60HDU Service Manual

» Choose a dust-free workshop to adjust the focus.
» Disconnect the LCD panel output lead from the connector. With the output PWB and the
radiation fins detached (but keep the output PWB and other connectors connected), turn
on the power.
(Lamp on, fan driven, and no signal displayed)
Keep the projection lens focus intact in its initial condition.
» Adjust the focus so that the pixels are most crisp on the white-only screen (lamp on, fan
driven, and no signal displayed).
(A) Adjusting the G-LCD
(1) Adjusting the top, center and bottom focus on screen (θY direction)
Loosen the lock screws "b" and "c", put an eccentric driver into the groove/hole "b" or "c". Turn the driver so
that the top, center and bottom on the screen are put in focus.
Finally tighten up the lock screws "b" and "c".
(2) Adjusting the right and left focus on screen (θX direction)
Loosen the lock screws "a", put an eccentric driver into the groove/hole "a". Turn the driver so that the right
and left on the screen are put in focus. Finally tighten up the lock screw "a".
Note : Do not change the projection lens focus until all the adjustments are completed.
(B) Adjusting the B-LCD (Do the same as for the R-LCD.)
Take the same adjustment procedure as for the G-LCD. Note, however, that the Z direction needs a little
greater shift. If the convergence is different between the G-LCD and B-LCD, first roughly adjust the conver-
gence and then the focus.

ADJUSTING THE FOCUS

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LC-R60HDU