Sanyo PLC-EF12N Service Manual

Also see for PLC-EF12B: Owner's manual

-32-Electrical AdjustmentsPresetting1. Receive the 16-step grey scale video signal.2. Set to VIDEO mode.[R-PEDESTAL ADJUSTMENT-2]3. Connect an oscilloscope to test point “TP501” (+) andchassis ground (-).4. Enter to the service mode, select Data no. “00B” andchange data value to adjust the pedestal and blacklevel to be the same level.[G-PEDESTAL ADJUSTMENT-2]5. Connect an oscilloscope to test point “TP531” (+) andchassis ground (-).6. Select Data no. “00D” and change data value to adjustthe pedestal and black level to be the same level.[B-PEDESTAL ADJUSTMENT-2]7. Connect an oscilloscope to test point “TP561” (+) andchassis ground (-).8. Select Data no. “00F” and change data value to adjustthe pedestal and black level to be the same level.Pedestal level = Black levelPEDESTAL ADJUSTMENT-[AV]Presetting1. Receive the 16-step grey scale computer signal.2. Set to COMPUTER mode.[R-GAIN ADJUSTMENT-1]3. Connect an oscilloscope to test point “TP501” (+) andchassis ground (-).4. Enter to the service mode, select data no. “006” andchange data value to adjust “a” to be minimum ampli-tude.[G-GAIN ADJUSTMENT-1]5. Connect an oscilloscope to test point “TP531” (+) andchassis ground (-).6. Select data no. “008” and change data value to adjust“a” to be minimum amplitude.[B-GAIN ADJUSTMENT-1]7. Connect an oscilloscope to test point “TP561” (+) andchassis ground (-).8. Select data no. “00A” and change data value to adjust“a” to be minimum amplitude.Pedestal level = Black level(a)GAIN ADJUSTMENT-[CG]