Samsung DVD-E137 train[1].man free download

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6. Alignment and Adjustment 6-1 Location od Test Point SKEW Fig. 6-1 Location of Test Point Samsung Electronics 6-1 Alignment and Adjustment 6-2 Skew Adjustment 6-2-1 Adjustment Spec. and Test Point Test Disc ; Service not Available Test Disc Adjustment Spec. Test Point Adjustment Location TDV-533 "ENV" Screw A / B Chapter 14 Flat Waveform (Main PCB - Component Side) Ass'y Deck - Bottom Side (See Fig. 6-1) (See Fig. 6-2) Fig. 6-2 Ass'y Deck (Top Side) 6-2 Samsung Electronics Alignment and Adjustment 6-2-2 SKEW Adjustment Method Needed to minimize the variations in Skew of the Pickup unit and to provide optimum match with the recorded signal on the Disc. 1) Connect an Oscilloscope to the "ENV" Test Point (See Fig. 6-1). 2) Connect Power, Open the Tray and Play the TDV-533 Disc, Chapter 14. Set the Oscilloscope Range as follows : (Voltage ; 50mV/Div., Frequency ; 10m Sec.) 3) Adjust the Screws "A" and "B" (See Fig. 6-2) using a Hex screwdirvier until you obtain a Flat Waveform and the picture is stable. Then, go to Chapter 1 and make sure the Waveform is Flat here as well. If not, you have to go back to Chapter 14 and adjust again. If you cannot obtain a Flat waveform, then the unit is defective. Note : The Deck must be in a horizontal position. Use both "A" and "B" screws to adjust. Typical Waveform before Adjustment Waveform after Correct Adjustment Fig. 6-3 Envelope Waveform Samsung Electronics 6-3 Alignment and Adjustment MEMO 6-4 Samsung Electronics


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