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36

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38

No.

Adjustment Items

Adjustment Conditions

Adjustment Procedures

1

Initialization of
EEPROM

1. Turn on the power (the lamp lights
up) and warm up the system for 15
minutes.

1. Make the following settings.
Press S2601 to enter the process mode, and
execute S2 on the SSS menu. Now the
EEPROM, except for the PC I/F unit, is
initialised.
Do not execute S1, or the PC I/F unit itself
will be initialised.
(The PC I/F unit has been factory adjusted.)
To adjust the PC I/F unit, refer to the end of
the section.

2

Adjustment of
RGB1 black level
signal amplitude

1. Select the following group and
subjects.
Group: OUTPUT1
Subject: G1-BLK, G1-GAIN
For the colour R, select the subjects
R1-BLK and R1-GAIN.
For the colour B, select the subjects
B1-BLK and B1-GAIN.
2. Make sure the process adjustment
colour bars are displayed.
3. For the colour G, connect a
oscilloscope to pin (2) of P1301.
4. For the colours R and B, connect
the oscilloscope to pin (1) of P1301
and pin (3) of P1301, respectively.

1. Select the subject G1-GAIN. Using the
set's control switch or the remote controller
button, adjust the setting so that the signal
amplitude is 4.0 Vp-p±0.05 V.
2. Select the subject G1-BLK. Using the
set's control switch or the remote controller
button, adjust the setting so that the white-
to-white level is 1.8 Vp-p±0.1 V.
3. Do the same for the other colours R and
B.

* The G1 subjects are linked with the
R1 and B1 subjects.
When the G1-BLK setting has been
changed, therefore, the R1-BLK and
B1-BLK settings vary themselves
accordingly. When the G1-GAIN setting
has been changed, equally, the R1-GAIN
and B1-GAIN settings vary themselves
accordingly. First make the G1 settings and
then readjust the R1 and B1 settings as
required.

3

Adjustment of
PSIG

1. Select the following group and
subjects.
Group: OUTPUT2
Subject: PSIG-H, PSIG-L
Make sure the PSIG-H and PSIGL
settings are 64 and 100, respectively.

1. Get the PSIG waveform displayed.
(Feed the XGA
signal.)

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