Common Center Adjustment - Sanyo Plc-WXU300 Service Manual

Electrical Adjustments
6. Auto calibration adjustment [Video]
1. Enter the service mode.
. Receive the 16-step grey scale composite video sig-
Video
nal with mode.
3. To start the auto-calibration for Component adjust-
ment, select group no. "
change data value from "
bration completed, "OK" will appear on the screen.
below adjustment is performed when the above auto
calibration is failed.
Gain adjustment [Video]
1. Enter the service mode.
. Receive the 16-step grey scale composite video signal
Video [Video]
with mode.
3. Connect an oscilloscope to test point "
and chassis ground (-).
20
4. Select group no. " " , item no. "
a
amplitude " " to be minimum by changing the Data
value.
White Level
(a)

7. common center adjustment

1. Enter the service mode.
. Receive the 50%-Whole Gray computer signal with
computer1 [rGB] mode.
104
3. Select group no. "
2
data value to " " to reduce the panel frequency.
4. Project only green light component to the screen.
5. Select group no. " 105" , item no. " 10" and change
data value to obtain the minimum flicker on the
screen.
6. Project only red light component to the screen.
7 . Select item no. " 9" and change data value to obtain
the minimum flicker on the screen.
8. Project only blue light component to the screen.
9. Select item no. " 11" and change data value to obtain
the minimum flicker on the screen.
10. Select group no. " 104" , item no. " 76" and change
data value to " 0" to reset the panel frequency.
260 0
" , item no. " " and then
0 1
" to " " . After the auto-cali-
tP35G
0
" and adjust the
76
" , item no. " " and change
8. 50% White adjustment [Pc]
1. Enter the service mode.
. Receive the 16-step grey scale computer signal with
computer1 [rGB]
3. Connect an oscilloscope to test point "
and chassis ground (-).
4. Select group no. "
data value to adjust amplitude "
white level
" (+)
9. White Balance adjustment [Pc]
1. Enter the service mode,
. Select group no. "252" , item no. "9" and change
data value to "2" to change the Lamp Mode to
MAX.
3. Receive the 16-step gray scale computer signal with
computer1 [rGB]
4. Select group no. "
223
" " (Blue), and change Data values respectively
to make a proper white balance.
5. Select group no. "252" , item no. "9" and change
data value to "0" to reset the Lamp Mode.
Confirm that the same white balance is obtained in
video and computer input.
10. 50% White adjustment [Video]
1. Enter the service mode.
. Receive the 16-step grey scale composite video sig-
Video[Video]
nal with
3. Connect an oscilloscope to test point "
and chassis ground (-).
4. Select group no. "
data value to adjust amplitude "
white level
-3-
mode.
tP35G
104 220
" , item no. " " and change
a 1.6 V
" to be
(a)
white level
mode.
104 217
" item no. " " (Red) or
mode.
tP35G
104 220
" , item no. " " and change
a 1.6V
" to be
(a)
white level
" (+)
.
" (+)
.