7
TLP-X4500(P5XMLA)
4-5 White balance adjustment (visual inspection)
Preparations
1. Perform these adjustments after the NRSH
adjustment described in Section 4-4.
2. Reset gamma correction before adjustment.
Place the cursor on [GAMMA] in the FACTORY
MENU, press the [RESET] key and select
[DEFAULT].
Adjustment procedure
1. First, adjust the G color.
2. Select GAMMA, SB-CNT, and G: in the FACTORY
MENU. If the background is white solid, press the
[ENTER] key on the Remote control transmitter to
change to [G] monochrome in the 29-tone
grayscale.
3. A d j u s t G A M M A , S B - C N T, a n d G : i n t h e
FACTORY MENU so that brightness of 29 steps
is best.
4. Don’t adjust GAMMA, SB-BRT, and G: in the
FACTORY MENU. Because we want to keep
the best contrast ratio.
5. Then adjust colors R and B.
6. S e l e c t G A M M A , S B - C N T, a n d G : i n t h e
FACTORY MENU. If the background is white
solid, press the [ENTER] key on the Remote
control trasmitter to change to [W] monochrome
in the 29-tone grayscale.
7. Adjust GAMMA, SB-BRT, R: and B: in the
FACTORY MENU so that low-brigtness white
balance is best.
8. Adjust GAMMA, SB-CNT, R: and B: in the
FACTORY MENU so that middle-brightness
white balance is best.
9. Repeat steps 7 to 8 above, and adjust so
that brightness white balance of 29 steps is
best.
4-4 NRSH adjustment (vertical stripe adjustment)
Signals for internal adjustment
192
/255
168
/255
144
/255
120
/255
96
/255
72
/255
48
/255
24
/255
Adjustment procedure
1. Make this adjustment after completing the
adjustment in 4-3 Flicker adjustment.
2. Use DAC-P - NRSH - R: in the FACTORY MENU
to adjust so that the vertical lines spaced every 6
dots are as inconspicuous as possible.
(Reduce
the
adjustment
value
when
black
stripes appear in the 2nd or 3rd tone from the
black side. Note that when the adjustment value
is lowered, white stripes may appear in the 2nd
or 3rd tone from the bright side. Should this
happen, adjust so that the stripes are as
inconspicuous as possible.)
3. In the same way, use DAC-P - NRSH - G: in the
FACTORY MENU to adjust vertical stripes of G
color.
4. In the same way, use DAC-P - NRSH - B: in the
FACTORY MENU to adjust vertical stripes of B
color.
5. After completing this adjustment, return to Flicker
a d j u s t m e n t i n 4 - 3 a n d m a k e s u r e N R S H
adjustment has not affected Flicker performance.
If it has become worse, readjust the Ficker and
the NRSH adjustments.
Summary of Contents for TLP-X4500
Page 1: ...SERVICE MANUAL FILE NO 330 200404 3LCD PROJECTOR TLP X4500 Document Created in Japan Jul 2004 ...
Page 37: ...36 TLP X4500 P5XMLA 8 Disassembly diagram M Meter screw T Tapping screw ...
Page 38: ...37 TLP X4500 P5XMLA M Meter screw T Tapping screw ...
Page 53: ...52 TLP X4500 P5XMLA 13 Basic circuit diagram Parts with hatching are not mounted ...
Page 55: ...T O S H I B A C O R P O R A T I O N 1 1 SHIBAURA 1 CHOME MINATO KU TOKYO 105 8001 JAPAN ...
