2.12 Gamma Adjustment
[PC-gamma adjustment]
1. Receive the 16-step grey scale computer signal with
Computer2 [RGB]
mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “
TPG1
” (+) and chassis ground (–).
4. Select group no. “
9
”, item no. “
10
” and change data value to adjust amplitude “a” to
be
2.2
± 0.1V.
[AV-gamma adjustment]
1. Receive the 16-step grey scale video signal with
Video [Video]
mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “
TPG1
” (+) and chassis ground (–).
4. Select group no. “
9
”, item no. “
10
” and change data value to adjust amplitude “a” to
be
2.4
± 0.1V.
Fig. 3-10
2.13 White Balance Adjustment
[PC white balance adjustment]
1. Receive the 16-step gray scale computer signal with
Computer2 [RGB]
mode.
2. Enter the service mode, select group no. “
9
” item no. “
11
” (Red) or “
12
” (Blue), and
change Data values respectively to make a proper white balance.
[AV white balance adjustment]
1. Receive the 16-step gray scale composite video signal with
Video [Video]
mode.
2. Enter the service mode, select group no. “
9
” item no. “
11
” (Red) or “
12
” (Blue), and
change Data values respectively to make a proper white balance.
Confirm that the same white balance is obtained in video and computer input.
(a)
white level
white level
Part 3: Adjustment
3-17
Содержание D78-5452
Страница 9: ...Part 1 General Information ...
Страница 25: ...Part 2 Repair Information ...
Страница 43: ...Part 3 Adjustment ...
Страница 66: ...Part 4 Troubleshooting ...
Страница 77: ...Part 4 Troubleshooting 4 11 4 IC BLOCK DIAGRAMS AD8075 Selector IC201 AN7513 Audio Output IC5601 ...
Страница 78: ...Part 4 Troubleshooting 4 12 AN5870 RGB SYNC SW IC1201 IC5201 BA7078 Sync Separator IC5341 ...
Страница 80: ...Part 4 Troubleshooting 4 14 CXD3536 LCD Driver IC401 FA5502 P F Control IC621 ...
Страница 81: ...Part 4 Troubleshooting 4 15 M62392 M62393 D A IC6271 IC281 ML60851 USB Driver IC9801 ...
Страница 82: ...Part 4 Troubleshooting 4 16 STR Z2156 Power Switching Control IC631 TB1274 Video Decoder IC3101 ...
Страница 83: ...Part 4 Troubleshooting 4 17 TC90A69F Y C Separator IC2101 ...
Страница 84: ...Part 5 Parts Catalog ...
Страница 85: ......
Страница 99: ...Part 6 Electrical Diagrams ...