Panasonic NV-VP31EB Operating Instructions Manual page 60

Before requesting service
Manual correction of a bad picture:
Automatic Clock set doesn't work
properly:
Bad picture or sound:
The recording functions do not
work properly:
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VCR DISTORTIONS
If you notice interference or a shift of the picture during normal, still or slow motion playback, press
the TRACKING / V-LOCK button towards + or - to correct the picture.
Press + and - together to actuate automatic correction. Some video cassettes do not support
tracking control. This is not indicative of a malfunction.
Set Clock set to [AUTO].
If the device cannot find a TV station transmitting the time signal, set Time and Date manually.
The use of E-300 cassettes may cause problems if the recordings were taken at
low tape speeds LP or EP.
Verify that the aerial and/or Scart cables are attached and work properly.
Check the SQPB/ S-VHS playback setting for S-VHS cassettes.
Please contact your service technician if the video heads are dirty or worn out.
Having a technical service shop clean the video heads is not covered by the guarantee.
If flashes on the device, check if the protection tab of the video cassette is still in.
Check Time and Date.
Check the start and stop time of the timer programme.
Check if the TIMER button has been pressed to put the device into timer mode
after programming a recording.
Check the start and stop time of a PDC recording.
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