Panasonic Palmcorder PalmSight PV-L750 Operating Instructions Manual page 80

Before Requesting Service
While head cleaning is normally not needed, playing old or
damaged tapes may clog the heads. When playback picture
resembles example at the left, head cleaning is required.
ideally, head cleaning should be performed by a qualified
service technician. When this is not possible, purchase a
Clogged Video Head head cleaning cassette. Be sure to follow cleaning cassette
instructions exactly and only use when symptoms occur.
Self Diagnostic System"
If any of the following numbers appear on-screen, the camcorder may have a problem.
Do not remove the battery (if attached) and write down the displayed number on page 81.
Then, take the camcorder to a service center for repair.
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80 For assistance, call 1-800-211-PANA(7262)
.