XG-C55X (serv.man12). Electrical adjustment - Sharp Projector Service Manual (repair manual). Page 4

No.

Adjustment Items

Adjustment Conditions

Adjustment Procedures

17

Adjustment of
COMPO white
balance

1. Feed the DTV monoscope pattern

signal.

2. Select the following group and sub-

jects.
Group: DLP
Subjects: C-R1-BLK, C-B1-BLK

1. Using the set's control switch or the

remote controller button, adjust the
settings to have the same white bal-
ance as on the standard monitor.

20

Adjustment of
sRGB white
balance

1. Feed the RGB 50% gray pattern

signal.

2. Select the following group and sub-

jects.
Group: OUTPUT1
Subjects: S-R1-BLK, S-R1-GAIN, S-
G1-BLK, S-G1-GAIN, S-B1-BLK, S-
B1-GAIN

3. Have the BM-5 brightness meter and

the standard white board at hand.

1. Make the S-R1-BLK setting the same

as the R1-BLK one.
Make the S-G1-BLK setting the same
as the R1-BLK one.
Make the S-B1-BLK setting the same
as the R1-BLK one.
Make the S-R1-GAIN setting the
same as the R1-GAIN one.

2. Adjust the S-B1-GAIN and S-G1-

GAIN settings so that the chroma-
ticity on the brightness meter should
be as follows.
x: .313±7/1000
y: .350±10/1000

18

Automatic color
irregularity correc-
tion

1. Apply the automatic color correc-

tion using the automatic color irregu-
larity correction system (ccdc).

1. Make sure that no remarkable uneven

color remains on the screen.

19

Checking of
tracking

1. Input the RGB 10-step gray-scale

(inverse vertically) signal.

2. Select the following group and sub-

ject.
Group: LINE
Subject: OPT-MECH

Check the tracking of the gradation on
the lower side.
In case that it is bad, adjust the OPT-
MECH value to the optimum.
(It takes 2 - 3 seconds for changing for
selection.)
0:Red and blue up
1:Red and blue down
2:Initial value (Normal)

Cautions on 3D irregular color correction adjustment
The following measurement and adjustment must be carried out:
• In a dark room (take care for stray light)
• Using diffuse reflection type (mat type) screen in the uniform conditions.

Settings of the projector must be carried out in the following conditions:
• Do not save power (to keep the lamp to the stable condition during measurement)
• Automatic search cancel (to fix INPUT1)
• INPUT1 RGB mode (cancel the component mode of INPUT 1, just in case)

(1) System setting (“setting” - “system setting”)

System optional

Simultaneous write in of 3D correction value:

No (not checked)

Char transmission interval:

0 ms

Binary interval:

2 ms