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TROUBLESHOOTING FLOW CHART
B.
Playback picture is not good.
Noise appears on the screen on the whole.
NO
Noise appears on the screen at the bottom
NO
Check flow A.
YES
Check the PG Adjustment.
YES Is SW-pulse applied to video IC? NO Is sw pulse supplied from pin 18 of IC501? NO Check D.PG input and connector.
YES
Check pattern
YES Is Enve. waveform supplied to pin 4 of P T501? NO Check connector, and Head dust. NO Change Drum Ass'y
YES Check video circuit.
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