Sanyo PLC-EF12N Service Manual

Also see for PLC-EF12B: Owner's manual

-34-Electrical Adjustments[B-VIDEO ADJUSTMENT-2]11. Connect an oscilloscope to test point “TP2513” (+)and chassis ground (-).12. Select data no. “01C” and set data value to “3FF”.13. Select Data no. “01B” and change data value toadjust “a” to be 4.0 ±0.05Vp-p.14. Select Data no. “01C” and change data value toadjust “b” to be 2.1 ±0.05Vp-p.(a)(b)black levelwhite levelwhite level[CG WHITE BALANCE]1. Receive the 16-step gray scale computer signal.2. Set to COMPUTER mode.3. Select data no. “014” (Red) or “016” (Blue), andchange data values respectively to make a properwhite balance.Confirm the withe balance in VIDEO and COMPUTERmode.[AV WHITE BALANCE]1. Receive the 16-step gray scale video signal.2. Set to VIDEO mode.3. Select data no. “01A” (Red) or “01C” (Blue), andchange data values respectively to make a properwhite balance.Confirm the withe balance in VIDEO and COMPUTERmode.WHITE BALANCE ADJUSTMENT-[AV]WHITE BALANCE ADJUSTMENT-[CG]1. Receive the 1-line black/white computer signal.2. Set to COMPUTER mode.[R-COMMON CENTER ADJUSTMENT]3. Project only red light component on the screen.4. Select data no. “020” and change data value to obtainthe minimum flicker on the picture.[G-COMMON CENTER ADJUSTMENT]5. Project only green light component on the screen.6. Select data no. “021” and change data value to obtainthe minimum flicker on the picture.[B-COMMON CENTER ADJUSTMENT]7. Project only blue light component on the screen.8. Select data no. “022” and change data value to obtainthe minimum flicker on the picture.COMMON CENTER ADJUSTMENT1. Receive the 16-step gray scale video signal.2. Set to VIDEO mode.[R-OFFSET ADJUSTMENT]3. Project only red light component on the screen.4. Select data no. “023” and change data value to disap-pear the vertical stripes on the screen.[G-OFFSET ADJUSTMENT]5. Project only green light component on the screen.6. Select data no. “024” and change data value to disap-pear the vertical stripes on the screen.[B-OFFSET ADJUSTMENT]7. Project only blue light component on the screen.8. Select data no. “025” and change data value to disap-pear the vertical stripes on the screen.Project all lights and conform that the no vertical stripesare observed on the screen.OFFSET ADJUSTMENT-[AV]