PG-A20X. Version 1.5 - Sharp Projector Handy Guide. Page 33

33

No.

Adjustment Items

Adjustment Conditions

Adjustment Procedures

7

R/G/B Black
Level Signal
Amplitude adjustment

1. Select the following group and
subjects.
Group : OUTPUT1
Subject :
On Green adjustment
G1-BLK
G1-GAIN
On Red Adjustment
R1-BLK
R1-GAIN
On Blue Adjustment
B1-BLK
B1-GAIN
2. Make sure the process adjustment
colour bags appear onscreen.
3. Connect a oscilloscope to pin(2) of
P1301 for the G setting.
4. Connect the oscilloscope to pin(1)
of P1301 and pin(3) of P1301 for the
R and B settings, respectively.

1. Select G1-GAIN. Using the set's control
switch or the remote controller's button,
adjust the signal amplitude to 3.90 Vp-p
± 0.05 V.
2. Now select G1-BLK. Using the set's
control switch or the remote controller's
button, adjust the white-to-white level to 2.00
Vp-p 

± 0.05 V.

3. Do the same for the R and B settings.

8

RGB countervoltage
adjustment

1. Feed the countervoltage
adjustment signal. (XGA)
2. Select the following group and
subjects.
Group : OUTPUT3
Subject : RC (R)
GC (G)
BC (B)

1.Using the set's control switch or the remote
controller’s button, adjust the setting so that
the flickering be minimum.
2.Adjust the setting so that the image comes
to the centre of the screen.

9

Chiral phase selection of
LCD panel

1. Group : OUTPUT3
Subject : OPT-MECH

1.Adjust the GR and GL panel settings to 0
and 1, respectively.

10.

RGB white balance
adjustment

1. Feed the RGB 50% grey signal.
(SVGA)
2. Select the following group and
subjects.
Group : OUTPUT1
Subject : R1-BLK(R)
B1-BLK(B)

1.Adjust the R1-BLK and B1-BLK(B) settings
so that the chromaticity based on CL200
becomes as follows (8500K). x=291±5
y=320±5

11

sRGB adjustment

1. Feed the RGB 50% grey signal.
(SVGA)
2. Select the following group and
subjects.
Group : OUTPUT1
Subject : S-R1-BLK
S-B1-BLK

1.Adjust the R1-BLK and B1-BLK(B) settings
so that the chromaticity based on CL200
becomes as follows (6500K). x=313±5
y=334±5

12

Automatic colour irregularity
correction

1. Apply the automatic colour
correction using the automatic colour
irregularity correction system.

1.Make sure that no remarkable uneven
colour remains on the screen.

13

Video Tint adjustment

1. Select the following group and
subject.
Group : VIDEO
Subject : N-Tint
P-Tint
S-Tint

1. Check the fixed value.
N-Tint : 5
P-Tint : 5
S-Tint : 5

14

Video Colour saturation
adjustment

1. Select the following group and
subject.
Group : VIDEO
Subject : N-Colour
P-Colour
S-Colour

1. Check the fixed value.
N-Colour : 5
P-Colour : 5
S-Colour : 5