To Remove Noise From The Picture - Hitachi VT-FX6410A Owner's Manual

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Press the REW or F.FWD button, then press it again.
To stop the tape, press the STOP button.
Note: During super rewind/fast-forward, there will be an interval of 5 seconds between the time the STOP button
is pressed and the tape actually stops. This is designed to protect the tape. To stop the tape earlier, press the
REW or F.FWD button to restore the normal rewind/fast-forward speed, then press the STOP button.

To remove noise from the picture

Auto Tracking
Pressing the PLAY button starts the auto tracking feature, which automatically adjusts playback to eliminate static
lines or picture noise that may appear on the screen.
Manual Tracking
Scratched tapes or poorly recorded tapes may require additional picture adjustment. You can do this with the
remote control.
Note: To reactivate auto tracking, simply eject the tape and reinsert it into the VCR.