Sanyo PLC-SU40 Service Manual

Also see for PLC-SU25: Owner's manual Specifications

-29-Electrical Adjustments1. Receive the 16-step gray scale computer signal withComputer [Analog RGB] mode.2. Enter the service mode.3. Connect an oscilloscope to test point “TP503G” (+)and chassis ground (-).4. Select item no. “10” and adjust the amplitude “a” tobe 2.4 ±0.1V by changing the Data value.(a)white levelwhite level⁄0 Signal Offset adjustment [PC][PC WHITE BALANCE ADJUSTMENT]1. Receive the 16-step gray scale computer signal withComputer [Analog RGB] mode.2. Enter the service mode, select item no. “11” (Red) or“12” (Blue), and change Data values respectively tomake a proper white balance.[AV WHITE BALANCE ADJUSTMENT]3. Receive the 16-step gray scale composite video sig-nal with Video [Video] mode.4. Enter the service mode, select item no. “11” (Red) or“12” (Blue), and change Data values respectively tomake a proper white balance.Confirm that the same white balance is obtained invideo and computer input.⁄2 White Balance adjustmentIf you find the color shading on the screen, pleaseadjust the white uniformity by using the proper comput-er and “Color Shading Correction” software suppliedseparately. The software can be ordered as follows;COLOR SHADING CORRECTION ver.. 3.0Service Parts No. 645 056 6288NOTE ON WHITE UNIFORMITYADJUSTMENT1. Receive the 16-step gray scale composite video sig-nal with Video [Video] mode.2. Enter the service mode.3. Connect an oscilloscope to test point “TP503G” (+)and chassis ground (-).4. Select item no. “10” and adjust the amplitude “a” tobe 2.4 ±0.1V by changing the Data value.(a)white levelwhite level⁄1 Signal Offset adjustment [AV]