Service manual
19
XV-Z90U
DT-200
ELECTRICAL ADJUSTMENT
1 Initialization of
EEPROM
1. Turn on the power (the lamp lights
up) and warm up the system for 15
minutes.
No. Adjustment Items Adjustment Conditions Adjustment Procedures
1. Carry out the following setting.
Using the remote controller or press
S2002 to enter the process mode,
and execute SS2 on SS menu.
2 Adjustment of CW
index
1. Input the gradation pattern of RGB.
2. Select the following group and sub-
ject.
Group: DLP
Subject: Select CW-INDEX.
1. Select subject and make adjustment
so that the lamp gradation patterns
of R, G and B should be smooth with-
out noise.
R
G
B
3-1 Adjustment of R
brightness/con-
trast
1. Select the following group and sub-
ject.
Group: AD
Subject: R-Bright
R-Contrast
2. Feed the window pattern having
91%(0.64Vp-p) R signal and 0%.
(Process gamma interlock)
1. On the bit-less screen, adjust in the
order of black side R-bright and white
side R-contrast.
Adjust the black level so that bright
red bit-less may disappear and may
turn pale red.
Adjust the white level so that red bit-
less may appear from black.
3-2 Adjustment of G
brightness/con-
trast
1. Select the following group and sub-
ject.
Group: AD
Subject: G-Bright
G-Contrast
2. Feed the window pattern having
91%(0.64Vp-p) G signal and 0%.
(Process gamma interlock)
1. On the bit-less screen, adjust in the
order of black side G-bright and white
side G-contrast.
Adjust the black level so that bright
green bit-less may disappear and
may turn pale green.
Adjust the white level so that green
bit-less may appear from black.
3-3 Adjustment of B
brightness/con-
trast
1. Select the following group and sub-
ject.
Group: AD
Subject: B-Bright
B-Contrast
2. Feed the window pattern having
91% (0.64Vp-p) B signal and 0%.
(Process gamma interlock)
1. On the bit-less screen, adjust in the
order of black side B-bright and white
side B-contrast.
Adjust the black level so that bright
blue bit-less may disappear and may
turn pale blue.
Adjust the white level so that blue
bit-less may appear from black.