Samsung PPM42S3QX/XAA Service Manual

Also see for PPM 42S3Q: Brochure & specs Owner's instructions Install guide Manual de instrucciones

Alignment and AdjustmentsSamsung Electronics 2-5Alignment and Adjustments2-2 WHITE Balance Coordinates2-2-1 White Balance Adjustment1. W/B Adjustment is required for the following four modes: DVI → DTV → PC → CVBS(VIDEO)→ CVBS(VIDEO PIP)2. Adjustment Method (DVI, DTV, PC : VG828, CVBS : Adjust RF signals to match theToshiba pattern (in-house signal)! Adjust the target set by adjusting the panel logic and the video DNIe adjustment register inregister in order to determine the referential W/B of the panel with a DVI input, whichis the full digital path.@ For DTV adjustment, adjust the adjustment register of ad9888 to align the DTV signalto the DNIe and logic panel value which was fixed with a DVI adjustment so that they arein effect considered to be the same signals. (At this time, do not adjust the gain ofAD9888 → the Highlight W/B does not need to be adjusted since its deviation fallswithin valid distribution range.)# PC adjustment is same as DTV adjustment. (The offset can be applied to the valuesobtained through DTV adjustment. However, additional adjustment is required forY, Cb, and Cr of DTV since PC processes R, G, and B signals.)$ cvbs adjustment is performed with the Toshiba pattern (in-house signal) and differsfrom the VG828 signals in the above three modes. Hence, it should be performed withthe same method of ! DVI adjustment.% Finally, activate PIP in video mode, and repeat W/B adjustment.❈ Thus, Micom saves the W/B data separately for each memory mode of the block(See the block diagram given below) during W/B adjustment.Micom can memorize the four modesseparately. However, under the currentadjustment guidelines, DTV and PC arememorized with the same value duringDVI adjustment and CVBS is memorizedwith a separate value.