-61-
Electrical Adjustment
1. Enter the service mode.
. Receive the 16-step grey scale computer signal with
Input1 [rGB]
mode.
3. Connect an oscilloscope to test point “
tP35G
” (+) and
chassis ground (-).
4. Select group no. “
0
”, item no. “
3
” and adjust the ampli-
tude “
a
” to be minimum by changing the Data value.
5. Connect an oscilloscope to test point “
tP35r
” (+) and
chassis ground (-).
6. Select group no. “
0
”, item no. “
4
” and adjust the ampli-
tude “
a
” to be minimum by changing the Data value.
7. Connect an oscilloscope to test point “
tP35B
” (+) and
chassis ground (-).
8. Select group no. “
0
”, item no. “
5
” and adjust the ampli-
tude “
a
” to be minimum by changing the Data value.
(a)
White Level
c
PC-Gain adjustment
1. Enter the service mode.
. Receive the 16-step grey scale computer signal with
Input1 [rGB]
mode.
3. To start the auto-calibration for PC adjustment, select
group no. “
260
”, item no. “
0
” and then change data
value from “
0
” to “
1
”. After the auto-calbration com-
pleted, "OK" will appear on the screen.
c
PC-Auto Calibration adjustment
1. Enter the service mode.
. Receive the 16-step grey scale composite video sig-
nal with
Input3 [Video]
mode.
3. To start the auto-calibration for Video adjustment,
select group no. “
260
”, item no. “
0
” and then change
data value from “
0
” to “
1
”. After the auto-calbration
completed, "OK" will appear on the screen.
v
Video-Auto Calibration adjustment
1. Enter the service mode.
. Receive the 16-step grey scale 480i-component video
signal with
Input2 [component]
mode.
3. To start the auto-calibration for 480i-component ad-
justment, select group no. “
260
”, item no. “
0
” and then
change data value from “
0
” to “
1
”. After the auto-cal-
bration completed, "OK" will appear on the screen.
b
480i-Auto Calibration adjustment
1. Enter the service mode.
. Receive the 16-step grey scale computer signal with
Input1 [rGB]
mode.
3. Connect an oscilloscope to test point “
tP35G
” (+) and
chassis ground (-).
4. Select group no. “
0
”, item no. “
0
” and change data val-
ue to adjust the pedestal level and black level to be the
same level.
5. Connect an oscilloscope to test point “
tP35r
” (+) and
chassis ground (-).
6. Select item no. “
1
” and change data value to adjust the
pedestal level and black level to be the same level.
7. Connect an oscilloscope to test point “
tP35B
” (+) and
chassis ground (-).
8. Select item no. “
2
” and change data value to adjust the
pedestal level and black level to be the same level.
P
edestal Lebel
Blac
k Lebel
c
PC-Pedestal adjustment
1. Enter the service mode.
. Receive the 16-step grey scale composite video signal
with
Input3 [Video]
mode.
3. Connect an oscilloscope to test point “
tP35G
” (+) and
chassis ground (-).
4. Select group no. “
20
”, item no. “
2
” and adjust the ampli-
tude “
a
” to be minimum by changing the Data value.
(a)
White Level
v
Video-Gain adjustment
1. Enter the service mode.
. Receive the 16-step grey scale 480i-component video
signal with
Input2 [component]
mode.
3. Connect an oscilloscope to test point “
tP35G
” (+) and
chassis ground (-).
4. Select group no. “
20
”, item no. “
0
” and adjust the ampli-
tude “
a
” to be minimum by changing the Data value.
(a)
White Level
b
480i-Gain adjustment
Perform these manual adjustments instead of the
Auto-calibration adjustment from [3] to [5] when
the auto-calibration is failed.
