PG-C20XE (serv.man5). Section 2 - Service Manual Text - Sharp Projector Service Manual (repair manual). Page 27

1. Select the following group,

sub-group and subjects.
Group : Adjust VIDEO image
Sub-group: CXA2111R
Subject :

AMP-R-Gain (In R adjustment)
AMP-R-BLK  (In R adjustment)
AMP-G-Gain (In G adjustment)
AMP-G-BLK  (In G adjustment)
AMP-B-Gain (IN B adjustment)
AMP-B-BLK (IN B adjustment)

2. Connect the synchroscope

to the following TPs.
 In R adjustment  TP1101
 In G adjustment  TP1201
 In B adjustment  TP1301

3. Feed the NTSC 10-step

signal.

1.Select AMP-R-Gain and adjust the signal amplitude

to 3.8 

±

 0.1Vp-p.

2.Select AMP-R-BLK and adjust the white-white sig-

nal amplitude to 2.1 

±

 0.1Vp-p.

3.Select AMP-G-Gain and adjust the signal amplitude

to 3.5 

±

 0.1Vp-p.

4.Select AMP-G-BLK and adjust the white-white sig-

nal amplitude to 2.6 

±

 0.1Vp-p.

5.Select AMP-B-Gain and adjust the signal amplitude

to 3.5 

±

 0.1Vp-p.

6.Select AMP-B-BLK and adjust the white-white signal

amplitude to 2.6 

±

 0.1Vp-p.

Note: Make sure that the black side does not interfere

in Gain adjustment.

2.1Vp-p(R)

3.8Vp-p(R)

1. Feed the 32-step gray-

scale signal. (VIDEO)

2. Select the following group,

sub-group and subjects.
Group : Adjust VIDEO Image
Sub-group: CXA2111R
Subject :

AMP-R-BLK (In R adjustment)
AMP-B-BLK (In B adjustment)

»

Adjust the setting to achieve the best color tone bal-
ance.

1. Apply the automatic color

correction using the auto-
matic color irregularity cor-
rection system.

»

Make sure that no remarkable uneven color remains
on the screen.

1. Feed the color bar signal.

»

User adjustment:
Check the Color and Tint settings.

1. Feed the monoscope pat-

tern signal.

»

User adjustment:
Check the performance relating to Contrast, Bright-
ness and Sharpness.

1. Feed the audio signal.

»

User adjustment:
Check the sound volume performance.