XG-NV4SE (serv.man4). Section 1 - Text - page 1-28 - Sharp Projector Service Manual (repair manual). Page 24

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 Choose the subject R1-GAIN and adjust the signal
amplitude to 3.6 ±0.1 Vp-p using the control switches
or the remote controller buttons.

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Next,choose the subject R1-BLK and adjust the black
peak level to 2.4 ±0.1V DC.

1. Make the following choice:

Group : OUTPUT 1
Subject : R1-BLK

R1-GAIN

For green, choose the sub-

    jects G1-BLK and G1-

GAIN.
For blue, choose the sub-
jects B1-BLK and B1-GAIN.

2. Connect the oscilloscope to

TP1101  for red.

    TP1201  for green
    TP1301  for blue

1. Connect the oscilloscope to

TP1102 for red.

    TP1202 for green
    TP1302 for blue.

2. Make the following choice:

Group : OUTPUT 2
Subject : R2-GAIN

 

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Using the control switches or the remote controller
buttons, adjust the waveform become as follows.

 

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 Make sure the waveform of the green and blue are

same as red.

1. Feed the XGA mode 75-Hz

black signal.

2. Make the following choice:

Group : OUTPUT 3
Subject : SH-PHASE
(Have the standard level at
8.)
Fix the R-, G- and B-
PHASE settings all to 8.

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Using the control switches or the remote controller
buttons, make sure that the “OUTPUT 3” characters
are not blurry and there is no ghost image. If such
blur or ghost occurs, finely adjust the setting in the
range of 7~9.

7V DC

2.5V DC

GND

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Adjust the signal's amplitude and maximum black
level to 3.3 ± 0.1Vp-p and 2.6 ± 0.1V DC, respec-
tively, for green and blue.

»

Make sure the BLK DATA is more than 100.

3.6Vp-p

2.4V DC 
  (Adjust to 2.6V DC for green and blue.)

(Adjust to 3.3Vp-p
 for green and blue.)