PG-C20XE (serv.man5). Section 2 - Service Manual Text - Sharp Projector Service Manual (repair manual). Page 24

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Feed the G (30%) signal to see if there is no vertical
stripe visible on the screen. If it is visible, adjust the
setting to somewhere between 160 and 200.

Make also sure that the R and B settings are as fol-
lows.
R_CLDLY

171

R_REVCLDLY 175
B_CLDLY

175

B_REVCLDLY 178

1. Feed the XGA mode mono-

chrome signal.

2. Select the following group,

sub-group and subjects.
Group : LCD2(6050)
Sub-group: CLDLY
Subject : R_CLDLY

G_CLDLY
B_CLDLY
R_REVCLDLY
G_REVCLDLY
B_REVCLDLY

2.1Vp-p

3.8Vp-p

1. Select the following group,

sub-group and subjects.
Group : Adjust PC 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 XGA 10-step sig-

nal.

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

to 3.8 

±

 0.1. Select 0.1Vp-p.

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

nal amplitude to 2.1 

±

 0.1Vp-p.

Note: Make sure that the black side does not interfere

in GAIN adjustment.
Adjust the amplitude as for G and B in the same
procedure.

1. Feed the XGA 10-step sig-

nal.

2. Select the following group,

sub-group and subjects.
Group : Adjust PC Image
Sub-group: AD
Subject :

R-Contrast (In R adjustment)
G-Contrast (In G adjustment)
B-Contrast (In B adjustment)

3. Connect the synchroscope

(0.2V/div.) to the following
TPs.
 In R adjustment  TP1403
 In G adjustment  TP1402
 In B adjustment  TP1401

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First reach a setting where the color tone level 10
gets saturated. Then decrease the setting by one
point.

0-gradation

10-gradation

0.8Vp-p