Service manual

23
PG-A20X
ELECTRICAL ADJUSTMENT
1 EEPROM
initialization
1. Turn on the power (with the
lamp on) and warm up the
set for 15 minutes.
» Make the following settings.
Press S2002 to call the process mode and execute
"SS2" on SS menu.
2-1 R/G/B Bright-
ness adjustment
1. Select the following group
and subjects.
Group : AD
Subject : R-Bright
G-Bright
B-Bright
(Process GAMMA interlock)
2. Feed the XGA 16-step sig-
nal with an amplitude level
of 50% (0.35 Vp-p).
1.Watching the screen, adjust the R-, G- and B-Bright
settings so that the second tone (3% level step) on
the black side should have some pixel dropouts and
the bright color zone should become just about a half.
No. Adjusting point Adjusting conditions Adjusting procedure
2-2 R/G/B Contrast
adjustment
1. Select the following group
and subjects.
Group : AD
Subject : R-Contrast
G-Contrast
B-Contrast
(Process GAMMA interlock)
2. Feed the SVGA white sig-
nal with an amplitude level
of 96% (0.67 Vp-p).
1.Watching the screen, adjust the R-, G- and B-Con-
trast settings so that because of some pixel drop-
outs, the bright color zone should become just about
a half.
3 DTV Brightness/
Contrast adjust-
ment
1. Feed a 480P component
10-step signal with 100%
amplitude.
2. Select the following group
and subjects.
Group : DTV
Subject : Bright
Contrast
(Process GAMMA interlock)
1. Check the setting value.
Contrast (White Level): 2
Bright (Black Level): 12
4 DVD Brightness/
Contrast adjust-
ment
1. Feed a 480PI component
10-step signal with 100%
amplitude.
2. Select the following group
and subjects.
Group : DVD
Subject : Bright
Contrast
(Process GAMMA interlock)
1. Check the setting value.
Contrast (White Level): 1
Bright (Black Level): 13