PG-C45X. Version 1.5 - Sharp Projector Handy Guide. Page 39

39

No.

Adjustment Items

Adjustment Conditions

Adjustment Procedures

4

Checking of
sample-and-hold
pulse phase

1. Feed the XGA-mode 75-Hz black
signal.
2. Select the following group and
subject.
Group: OUTPUT3
Subject: GCK-PHASE

1. Check the fixed value.
Fixed value: 6

5

Adjustment of
RGB counter-voltage

1. Feed the counter-voltage
adjustment signal (XGA) prepared by
the Technical Department.
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 button, adjust the settings
to minimise flickers.
2. If the results are inconsistent at the centre
and on both sides onscreen, readjust the
settings to get the same results on both
sides.

6

Adjustment of
RGB gradation
reproduction

1. Feed the SMPTE pattern signal.
2. Select the following group and
subject.
Group: OUTPUT1
Subject: G1-BLK

1. Confirm that the 100% and 95% white
gradation as well as the 0% and 5% black
gradation are discernible.
2. If the white gradation looks differently,
finely adjust the G1-BLK setting.

7

Adjustment of
RGB white balance

1. Feed the 32-step grey scale signal
(XGA, 60 Hz).
2. Select the following group and
subjects.
Group: OUTPUT1
Subjects: R1-BLK (R), B1-BLK (B)

1. Adjust the R1-BLK and B1-BLK settings
to have the specified gradation balance
(according to the standard monitor).

8

Adjustment of
video AGC

1. Feed the NTSC 10-step grey scale
signal.
2. Select the following group and
subject.
Group: VIDEO
Subject: AGC-ADJ
3. Connect the oscilloscope between
TP4501 and TP4502

1. Using the set's control switch or the
remote controller button, adjust the setting
so that the white-to-black level is 0.72 Vp-
p±0.01 V.

9

Adjustment of
video brightness/
contrast

1. Feed the NTSC100% window
pattern signal.
2. Select the following group and
subjects.
Group: VIDEO
Subject: AUTO, PICTURE/BRIGHT

1. Feed the signal. Using the set's control
switch or the remote controller button, select
the subject AUTO. The setting will adjust
itself.
2. Then adjust the PICTURE/BRIGHT setting
until the signal becomes bit-less.

10

Adjustment of
video tint

1. Feed the split colour bar signal.
2. Select the following group and
subject.
Group: VIDEO1 - Subject: TINT

1. Confirm the fixed value.
Fixed value: 128