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4.8 Test Patterns
The Test Patterns available in the menus are internal patterns. They cannot be used for Black and
White Level adjustments or Frequency and Phase.
Test patterns are internally generated. When you turn
on a test pattern, the selected source picture is
blocked. To show the picture again, you have to turn
the test pattern off.
To display a test pattern
1. Press
MENU
on the remote
2. Select
MISC
and press
ENTER
.
3. Select Test Patterns and press
ENTER
.
4. To change patterns, move the highlight up or
down with the arrow keys, then press
ENTER
.
a) The pattern does not appear until you press
ENTER
.
b) The red dot shows which pattern is on.
c) While a test pattern is on, you can press
PREV
to turn off the menu and the pattern will
remain.
To turn off a test pattern
1. Press
MENU
.
2. Select
MISC
and press
ENTER
.
3. Select Test Patterns and press
ENTER
.
4. Use the up or down arrow to move the highlight
to None.
5. Press
ENTER
. This turns off the test patterns and
displays the selected source picture on the screen.
(If the source picture is not visible when the Test
Pattern menu says None, one of the curtains is
on.)
Using Test Patterns
None means no test pattern is used and the source
picture is displayed.
White is used for color balancing. You can turn on
White from the Color Balance menu. White can
also be used to look for pixels that are stuck off.
Black is used to look for pixels that are stuck on.
50% Gray is also used for color balancing, and you
can turn it on from the Color Balance menu.
Red, Green, and Blue can be used to look for stuck
pixels.
Alignment is used to adjust the position and size of
the LCD’s image. This pattern has a series of short
dashes all around the edge of the picture. The
dashes indicate the outside six pixels on each edge.
Geometry is used to adjust the position and size of
the LCD’s image. When you highlight Geometry
and press
ENTER
, the screen may start with random
pixels. Then a 4×4 grid is painted from the top
down. The lines in the interior are one pixel wide,
and the outside edges are three pixels wide.
Gray Scale can show if there are any bit missing in
the data from the electronics module to the LCD.
The pattern should progress from dark to light
with no vertical bands of a lighter or darker shade
interrupting the pattern.
About Alignment and Geometry patterns
The Alignment and Geometry test patterns, which
are the same as Alignment Dashes and Geometry
Pattern in the LCD Alignment menu, take several
seconds to display. They must be drawn eight pixels
at a time.
In the Alignment pattern you may see only three
dashes on the left side of the screen, no matter how
where the LCD is horizontally. If this happens, high-
light Alignment in the Test Patterns menu and press
the + or – a few times to make all six dashes appear.
If the left side border in the Geometry Pattern is
only two pixels wide, highlight Geometry Pattern and
press the + or – buttons to fix it.
! Be sure to set Test Patterns to None when you are
finished with them. Otherwise, no source pictures can
be displayed.