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Cleaning of tape transport
Every 500 hours of use or whenever another repair is made
Clean the tape path thoroughly. This includes all tape guides,
shuttle assembly and drum.
Cleaning and degaussing of audio/control assembly
Every 500 hours of use or whenever another repair is made
Clean and demagnetize the Audio/control head
in a similar fashion to a regular audio deck.
Replace drive system belts, idlers etc
Every 500 hours of use. Check whenever another repair is made
Check all the rubber belts
and friction components, particularly
the pinch roller,
for signs of wear and if in doubt replace.
Measurement of back/forward tension
Every 500 hours of use or whenever another repair is made
Most VCRs require a back tension of approximately 60g.
Replacement of upper drum and video head
Every 2000 hours of use if required
Replace the
video head
if you see signs of failure, such as black/white
streaking on the picture or failure of hi-fi sound. It the VCR is the type
that uses a separate upper drum it is best to
replace the drum at the same time.
Replacement of lower drum
Every 5000 hours of use
Although it is recommended that the lower drum be replaced
it is not a realistic option as a new drum is probably not available.
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