XG-NV51XE (serv.man9). Electrical adjustment - Sharp Projector Service Manual (repair manual). Page 2

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-
j e c t s   B 1 - B L K   a n d   B 1 -
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 : PSIG-H

: PSIG-L

»

Adjust the PSIG waveform to the one shown below.

»

For the green and blue colours, make sure their
waveforms are similar to that of the red colour.

2.3V DC

5.9V DC

7.8V DC

GND

PSIG

(Adjust with PSIG-L.)

(Adjust with PSIG-H.)  

»

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.

»

Next,choose the subject R1-BLK and adjust the black
peak level to 3.2 ±0.1V DC.

»

Adjust the signal's amplitude and maximum black
level to 3.3 ± 0.1Vp-p and 3.4 ± 0.1V DC, respec-
tively, for green and blue.

3.6Vp-p

2.5 

±

0.1Vp-p

3.2V DC 
  (Adjust to 3.4V DC for blue.)

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

(Adjust to 
 2.5Vp-p
 for green.)

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 RCK-, GCK- and
BCK-PHASE settings all to
8.

»

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.