Sharp PG-C45X Anleitung Seite 21

No. Adjustment Items
4 Checking of
sample-and-hold
pulse phase
5 Adjustment of
RGB counter-
voltage
6 Adjustment of
RGB gradation
reproduction
7 Adjustment of
RGB white bal-
ance
8 Adjustment of
video AGC
9 Adjustment of
video brightness/
contrast
Adjustment Conditions
1. Feed the XGA-mode 75-Hz black
signal.
2. Select the following group and sub-
ject.
Group: OUTPUT3
Subject: GCK-PHASE
1. Feed the counter-voltage adjust-
ment signal (XGA) prepared by the
Technical Department.
2. Select the following group and sub-
jects.
Group: OUTPUT3
Subject: RC (R), GC (G), BC (B)
1. Feed the SMPTE pattern signal.
2. Select the following group and sub-
ject.
Group: OUTPUT1
Subject: G1-BLK
1. Feed the 32-step gray scale signal
(XGA, 60 Hz).
2. Select the following group and sub-
jects.
Group: OUTPUT1
Subjects: R1-BLK (R), B1-BLK (B)
1. Feed the NTSC 10-step gray scale
signal.
2. Select the following group and sub-
ject.
Group: VIDEO
Subject: AGC-ADJ
3. Connect the oscilloscope between
TP4501 and TP4502
1. Feed the NTSC100% window pat-
tern signal.
2. Select the following group and sub-
jects.
Group: VIDEO
Subject: AUTO, PICTURE/BRIGHT
Adjustment Procedures
1. Check the fixed value.
Fixed value: 6
1. Using the set's control switch or the
remote controller button, adjust the
settings to minimize flickers.
2. If the results are inconsistent at the
center and on both sides onscreen,
readjust the settings to get the same
results on both sides.
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.
1. Adjust the R1-BLK and B1-BLK set-
tings to have the specified gradation
balance (according to the standard
monitor).
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.
1. Feed the signal. Using the set's con-
trol 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.
21
PG-C45X