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[B-Pedestal adjustment]
8. Connect an oscilloscope to test point "TP201B" (+) and chassis ground (-).
9. Select item no. "16" of group no. "3" and change data value to adjust the pedestal
level and black level to be same level.
2.5 NRS Adjustment
1. Receive the 16-step gray scale computer signal.
2. Set to
COMPUTER
mode.
3. Connect an oscilloscope to test point "TP3551" (+) and chassis ground (-).
4. Enter the service mode and select item no. "7" of group no. "3" and change data value
to adjust it so that waveform "a" is 5.5 ± 0.1 V.
2.6 Signal Center Adjustment
1. Receive the 16-step gray scale computer signal.
2. Set to
COMPUTER
mode.
3. Enter the service mode.
[R-signal center adjustment]
4. Connect the digital voltmeter to test point "TP25R1" (+) and chassis ground (-).
5. Select item no. "0" of group no. "3" and change data value to adjust it so that the
voltage value is 7.30 ± 0.05 V.
[G-signal center adjustment]
6. Connect the digital voltmeter to test point "TP25G1" (+) and chassis ground (-).
7. Select item no. "1" of group no. "3" and change data value to adjust it so that the
voltage value is 7.30 ± 0.05 V.
Part 3: Adjustment
3-11
(a)
Fig. 3-3
Pedestal level = Black level
(a)
Fig. 3-2
Содержание LV-7355J
Страница 9: ...Part 1 General Information ...
Страница 22: ...Part 2 Repair Information ...
Страница 43: ...Part 3 Adjustment ...
Страница 65: ...Part 4 Troubleshooting ...
Страница 82: ...Part 4 Troubleshooting 4 17 BA7078AF Selector IC6241 CXA2101AQ RGB Matrix IC4101 ...
Страница 83: ...Part 4 Troubleshooting 4 18 CXD2064Q Digital Comb Filter IC2101 L3E01031 Level Shift IC3501 IC3531 IC3561 ...
Страница 85: ...Part 4 Troubleshooting 4 20 ML60851 USB I F IC9801 M62393 D A IC2571 ...
Страница 86: ...Part 4 Troubleshooting 4 21 TB1274AF Video Decoder IC1101 TA1318N AFC Detector IC6171 ...
Страница 87: ...Part 4 Troubleshooting 4 22 FA7612CA PWC Controller IC65A IC671 IC681 STR Z2156 Switching Controller IC631 ...
Страница 88: ...Part 5 Parts Catalog ...
Страница 89: ......
Страница 107: ...Part 6 Electrical Diagrams ...
Страница 117: ......