XV-Z2000E (serv.man14). XV-Z2000 p27-33 electrical adjustmenrs - Sharp Projector Service Manual (repair manual). Page 2

1. Group: AD

Subject: B-BRIGHT
               (Black level)
              B-CONTRAST
               (White level)

2. Feed the window pattern

signal containing 91%
(0.64Vp-p) B signal and
0% level.
(Process/Gamma interac-
tion)
(SVGA or XGA)
Input 5 RGB input

1. Observe the 0% window pattern chromaticity on

CA100.

2. Starting with a bit dropout screen, vary the B-

Bright setting until the bright blue "y" setting turns
toward the black tone and stays there. Now raise
the setting by one point and adjust to the point
where the first bit dropout is encountered (the
setting changes over 5/1000).

3. Observe the 91% G signal chromaticity on CA100.
4. Starting with a bit dropout screen, vary the B-

Contrast setting until the bright blue "y" setting
turns toward the black tone and stays there. Now
raise the setting by one point and adjust to the
point where the first bit dropout is encountered
(the setting changes over 5/1000).

1. Group: DTV

Subject:BRIGHT
              (Black level)
             CONTRAST
              (White level)

1. Check the fixed value.

Contrast: 5
Bright: 55

1. Group: DTV

Subject:R-BRIGHT
              (Black level)
             R-CONTRAST
             (White level)
(Process/GAMMA interac-
tion Input5 Color differ-
ence input)

1. Observe the 0%black window pattern chroma-

ticity on CA100.

2. Starting with a bit dropout screen, vary the Bright

setting until the bright red "x" setting turns to-
ward the black tone and stays there. Now raise
the setting by one point and adjust to the point
where the first bit dropout is encountered (the
setting changes over 5/1000).

3. Observe the 100% W window pattern chromatic-

ity on CA100.

4. Starting with a bit dropout screen, vary the Con-

trast setting until the bright red "x" setting turns
toward the black tone and stays there. Now raise
the setting by one point and adjust to the point
where the first bit dropout is encountered (the
setting changes over 5/1000).

1. Group: DTV

Subject:G-BRIGHT
              (Black level)
             G-CONTRAST
              (White level)
(Process/GAMMA interac-
tion Input5 Color differ-
ence input)

1. Observe the 0%black window pattern chroma-

ticity on CA100.

2. Starting with a bit dropout screen, vary the Bright

setting until the bright green "y" setting turns
toward the black tone and stays there. Now raise
the setting by one point and adjust to the point
where the first bit dropout is encountered (the
setting changes over 5/1000).

3. Observe the 100% W window pattern chromatic-

ity on CA100.

4. Starting with a bit dropout screen, vary the Con-

trast setting until the bright green "y" setting turns
toward the black tone and stays there. Now raise
the setting by one point and adjust to the point
where the first bit dropout is encountered (the
setting changes over 5/1000).