Sanyo PLC-SU40 Service Manual

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

-28-Electrical Adjustments1. Receive the 1 dot black & white pattern computer sig-nal with Computer [Analog RGB] mode.2. Enter the service mode.3. Project only red light component to the screen.4. Select item no. “19” and change data value to obtainthe minimum flicker on the screen.6. Project only green light component to the screen.7. Select item no. “20 and change data value to obtainthe minimum flicker on the screen.8. Project only blue light component to the screen.9. Select item no. “21” and change data value to obtainthe minimum flicker on the screen.. Common Center adjustment1. Receive the 16-step gray scale component video sig-nal [480i] with Video [Y,Cr,Cb] mode.2. Enter the service mode.3. Connect an oscilloscope to test point “TP505R” (+)and chassis ground (-).4. Select item no. “4” and adjust the amplitude “a” to beminimum by changing the Data value.5. Connect an oscilloscope to test point “TP503G” (+)and chassis ground (-).6. Select item no. “5” and adjust the amplitude “a” to beminimum by changing the Data value.7. Connect an oscilloscope to test point “TP501B” (+)and chassis ground (-).8. Select item no. “6” and adjust the amplitude “a” to beminimum by changing the Data value.(a)White Leveln Gain adjustment [Component]1. Receive the 16-step gray scale computer signal withComputer [Analog RGB] mode.2. Enter the service mode.3. Connect an oscilloscope to test point “TP505R” (+)and chassis ground (-).4. Select item no. “13” and adjust the amplitude “a” tobe 4.0 ±0.1V by changing the Data value.5. Connect an oscilloscope to test point “TP503G” (+)and chassis ground (-).6. Select item no. “14” and adjust the amplitude “a” tobe 4.0 ±0.1V by changing the Data value.7. Connect an oscilloscope to test point “TP501B” (+)and chassis ground (-).8. Select item no. “15” and adjust the amplitude “a” tobe 4.0 ±0.1V by changing the Data value.(a)m Gamma Gain adjustment [PC]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 “TP505R” (+)and chassis ground (-).4. Select item no. “13” and adjust the amplitude “a” tobe 4.0 ±0.1V by changing the Data value.5. Connect an oscilloscope to test point “TP503G” (+)and chassis ground (-).6. Select item no. “14” and adjust the amplitude “a” tobe 4.0 ±0.1V by changing the Data value.7. Connect an oscilloscope to test point “TP501B” (+)and chassis ground (-).8. Select item no. “15” and adjust the amplitude “a” tobe 4.0 ±0.1V by changing the Data value.(a), Gamma Gain adjustment [AV]