Sanyo PLC-SL20 Service Manual

Also see for PLC-SL20: Owner's manual

Contents

-6-Electrical Adjustments1. Receive the 16-step grey scale computer signal withComputer2 [RGB] mode.2. Enter the service mode.3. Connect an oscilloscope to test point “TPG1” (+) andchassis ground (-).4. Select group no. “0”, item no. “0” and change datavalue to adjust the pedestal level and black level to bethe same level.5. Connect an oscilloscope to test point “TPR1” (+) andchassis ground (-).6. Select item no. “1” and change data value to adjust thepedestal level and black level to be the same level.7. Connect an oscilloscope to test point “TPB1” (+) andchassis ground (-).8. Select item no. “2” and change data value to adjust thepedestal level and black level to be the same level.Pedestal LebelBlack Lebelx Clamp adjustment [PC]1. Receive the 16-step grey scale component signalwith Computer2 [Component] mode.2. Enter the service mode.3. Connect an oscilloscope to test point “TPG1” (+) andchassis ground (-).4. Select group no. “0”, item no. “0” and change datavalue to adjust the pedestal level and black level to bethe same level.5. Connect an oscilloscope to test point “TPR1” (+) andchassis ground (-).6. Select group no. “0”, item no. “1” and change datavalue to adjust the pedestal level and black level to bethe same level.7. Connect an oscilloscope to test point “TPB1” (+) andchassis ground (-).8. Select group no. “0”, item no. “2” and change datavalue to adjust the pedestal level and black level to bethe same level.Pedestal LebelBlack Lebelv Clamp adjustment [COMPONENT]1. 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 “TPG1” (+) andchassis ground (-).4. Select group no. “0”, item no. “0” and change datavalue to adjust the pedestal level and black level to bethe same level.5. Connect an oscilloscope to test point “TPR1” (+) andchassis ground (-).6. Select item no. “1” and change data value to adjust thepedestal level and black level to be the same level.7. Connect an oscilloscope to test point “TPB1” (+) andchassis ground (-).8. Select item no. “2” and change data value to adjust thepedestal level and black level to be the same level.Pedestal LebelBlack Lebelc Clamp adjustment [AV]