![Sanyo PLC-XU110 Service Manual Manual pdf 29 page image](https://manuals-archive2.s3.amazonaws.com/5595167/b7b8dcfc3188172679a98a045f9cd6d829f.jpg)
-29-Electrical AdjustmentsGain adjustment [component]1. Enter the service mode.2. Receive the 16-step grey scale 480i-component signalwith computer2 [component] mode.3. Connect an oscilloscope to test point “tP35G” (+) andchassis ground (-).4. Select group no. “0”, item no. “3” and adjust the ampli-tude “a” to be minimum by changing the Data value.(a)White Level1. Enter the service mode.2. Receive the 16-step grey scale composite video sig-nal with Video [Video] mode.3. To start the auto-calibration for Component adjust-ment, select group no. “260”, item no. “0” and thenchange data value from “0” to “1”. After the auto-cal-bration completed, "OK" will appear on the screen.b Auto Calibration adjustment [Video]1. Enter the service mode,2. Receive the 16-step gray scale computer signal withcomputer1 [rGB] mode.3. Select group no. “100” item no. “7” (Red) or “8” (Blue),and change Data values respectively to make a prop-er white balance.Confirm that the same white balance is obtained in videoand computer input., White Balance adjustment [PC]1. Enter the service mode.2. Receive the 16-step grey scale computer signal withcomputer1 [rGB] mode.3. Connect an oscilloscope to test point “tP35G” (+)and chassis ground (-).4. Select group no. “100”, item no. “6” and change datavalue to adjust amplitude “a” to be 1.6 ±0.1V.(a)white levelwhite levelm 50% White adjustment [PC]Gain adjustment [Video]1. Enter the service mode.2. Receive the 16-step grey scale composite video signalwith Video [Video] mode.3. Connect an oscilloscope to test point “tP35G” (+) andchassis 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” (+) andchassis 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” (+) andchassis 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 Level1. Enter the service mode.2. Receive the 50%-Whole Gray computer signal withcomputer1 [rGB] mode.3. Select group no. “100”, item no. “92” and changedata value to “2” to reduce the panel frequency.4. Project only green light component to the screen.5. Select group no. “101”, item no. “1” and change datavalue to obtain the minimum flicker on the screen.6. Project only red light component to the screen.7. Select item no. “0” and change data value to obtainthe minimum flicker on the screen.8. Project only blue light component to the screen.9. Select item no. “2 and change data value to obtainthe minimum flicker on the screen.10. Select group no. “100”, item no. “92” and changedata value to “0” to reset the panel frequency.n Common Center adjustmentbelow adjustment is performed when the above autocalibration is failed.