--
electrical Adjustments
1. Enter the service mode.
. Receive the 16-step grey scale composite video sig-
nal with
Video[Video]
mode.
. Connect an oscilloscope to test point “
tP_G1
” (+)
and chassis ground (-).
4. In Standard mode, select group no. "
100
", item no.
"
235
" and change data value to "
0
".
5. Select group no. “
100
”, item no. “
6
” and change data
value to adjust amplitude “
a
” to be
0.85V
.
6. select group no. "
100
", item no. "
235
" and change
data value to "
1
".
(a)
white level
white level
9. 50% White adjustment [Video]
1. Enter the service mode.
. Receive the 16-step grey scale composite video sig-
nal with
Video[Video]
mode.
. Select group no. “
100
” item no. “
7
” (Red) or “
8
”
(Blue), and change Data values respectively to make
a proper white balance.
Confirm that the same white balance is obtained in vid-
eo and computer input.
10. White Balance adjustment [Video]
If the correction of the Color shading adjustment is neces-
sary, please adjust the "Color shading" by using the "COLOR
SHADING CORRECTION" software supplied separately.
The color shading correction adjustment for this model
should be performed with the whole-gray patterns speci-
fied as below.
4-input patterns:
6.25% gray, 12.5% gray, 25% gray, 50% gray
11. Color Shading Correction adjustment
The Color Shading Correction can be ordered with following
service code.
COLOR SHADING CORRECTION Ver. 4.00
Service Parts No.
645 075 9611
1. Enter the service mode,
. Receive the 16-step gray scale computer signal with
computer1 [rGB]
mode.
. Select group no. “
100
” item no. “
7
” (Red) or “
8
”
(Blue), and change Data values respectively to make
a proper white balance.
Confirm that the same white balance is obtained in vid-
eo and computer input.
8. White Balance adjustment [PC]
1. Enter the service mode.
. Receive the 16-step grey scale computer signal with
computer1 [rGB]
mode.
. Connect an oscilloscope to test point “
tP_G1
” (+)
and chassis ground (-).
4. In Standard mode, select group no. "
100
", item no.
"
235
" and change data value to "
0
".
5. Select group no. “
100
”, item no. “
6
” and change data
value to adjust amplitude “
a
” to be
1.6V
.
6. select group no. "
100
", item no. "
235
" and change
data value to "
1
".
(a)
white level
white level
7. 50% White adjustment [PC]
Summary of Contents for PRM-20
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Page 71: ... 71 IC Block Diagrams LM4889 Audio Output IC5031 NJW1156 Audio Control IC5001 ...
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Page 103: ...KM5 2000 KM5 20 S 00 103 ...
Page 104: ... KM5YC KM5ZC January 2009 DC 200 Printed in Japan ...
Page 116: ...A10 SCH_KM5YC SCH_KM5ZC NO DATA ...