Panasonic TH-M50HD18 Service Manual

Also see for Viera TH-M50HD18: Service manual Operating instructions Quick start guide Manual de instrucciones

Panasonic TH-M50HD18 Service Manual Manual pdf 26 page image

268.2. Adjustment8.2.1. White balance adjustmentName of measuring instrument Connection Remarks• W/B pattern• Color analyzer(Minolta CA-100 or equivalent)Component inputPanel surfaceProcedure Remarks• Ensure aging is adequate.• Make sure the front panel to be used on the final set is fitted.• Make sure a color signal is not being shown before adjustment.• Put the color analyzer where there is little color variation.1. Output a white balance pattern.2. Check that the color temperature is [Cool].3. Set to serviceman mode, WB-ADJ.4. Set [R-CUT] [G-CUT] [B-CUT] the values written in table 1.5. Attach the sensor of color analyzer to the center of highlight window.6. Fix G drive at C0h and adjust [B-DRV] and [R-DRV] so x, y value of color analyzerbecome the [Color temperature High] in table 2.7. Increase RGB together so the maximum drive value in RGB becomes FC. That is,set [ALL DRIVE] to FC.Execute adjustment again. When that, the maximum value of R/G/B DRV should be FC,and either R/G/B DRV should be FC.8. Set color temperature to [Normal].9. Set [R-CUT] [G-CUT] [B-CUT] the values written in table 1.10. Attach the sensor of color analyzer to the center of highlight window.11. Fix G drive at C0h and adjust [B-DRV] and [R-DRV] so x, y value of color analyzerbecome the [Color temperature Mid] in table 2.12. Increase RGB together so the maximum drive value in RGB becomes FC. That is,set [ALL DRIVE] to FC.Execute adjustment again. When that, the maximum value of R/G/B DRV should be FC,and either R/G/B DRV should be FC.13. Set color temperature to [Warm].14. Set [R-CUT] [G-CUT] [B-CUT] the values written in table 1.15. Attach the sensor of color analyzer to the center of highlight window.16. Fix G drive at C0h and adjust [B-DRV] and [R-DRV] so x, y value of color analyzerbecome the [Color temperature Low] in table 2.17. Increase RGB together so the maximum drive value in RGB becomes FC. That is,set [ALL DRIVE] to FC.Execute adjustment again. When that, the maximum value of R/G/B DRV should be FC,and either R/G/B DRV should be FC.18. Set color temperature to [Cool].- adjustment of [Normal] [Warm] by data shift from [Cool] adjust. -For [Normal] [Warm] adjustment, set values that the adjusted value of [Cool]plus the figures wrote below.19. Copy values adjusted by HD pattern to the NTSC data area of EEPROM.