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4. Checking and adjusting the lens focus
1. Set the control pattern
switch on the remote control to the
service
mode position.
2. Press the TEST
button
on the remote control so that the crosshatch pattern is displayed on the screen.
3. Atter pressing the CUT-OFF button, press the R, G and B
buttons to switch
projection to single colors, and
check
that the focus for
each
color is correct.
.
If a color is out of focus, open the cover and then carry out the following operation.
CD
Loosen the mounting screws @ of the lens that is
out of
focus. and then
turn
the lens until the center
of the image on the screen
comes
into focus.
Once the adjustment has been completed.
securely tighten mounting screws @.
@ Loosen the mounting
screws
@ of the lens that is
out of focus, and then turn the lens
until
the edges
of the image on the screen comes into focus.
Once the adjustment
has been completed,
securely
tighten mounting screws @.
@ If the image
is
still out of focus even after the
adjustments in <D and @ have been made, repeat
step
<D,
and adjust so that the focus for the overall
image is at the best setting.
.
After focus adjustment has been carried out, the convergence settings
will become misaligned. so convergence
adjustment should always be carried out as the
next step.
.
If the focus
is still not correct
after all adjustments have been carried out, it will be necessary
to adjust the
static
focus.
Refer
to the foHowing page for procedures for doing this.
. If adjustment
is difficult
because
blooming occurs
after the GUT-OFF button
and the R, G and B
buttons
have
been
pressed
to display
a single-color
image,
use the lens
caps
to cover
the lenses
that are not being
adjusted
..,
'.
,.
..
.,
.,
.
",
,...,
",'
so that a single-color image is obtained, and carry
out adjustment in this condition.
~ ~ ~
Lens mounting screws@
- 57 -
-
~ ~ ~ ~
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