Sony DCR-TRV40 Operating Instructions Manual page 222

Usable cassettes
When affixing a label on the cassette
Be sure to affix a label only at tile locations illustrated
below [a] to prevent
malflmetion
of your camcorder.
After using the cassette
Rewind the tape to the beginning, put the cassette in its ease, and store it upright.
When the cassette memory does not work
Reinsert a cassette. Tbe gold plated connector of tbe cassette may be dilty oi"dusty.
Cleaning the gold-plated connector
If the gold plated connector on the cassette is dirty o1"dusty, the remaining tape
indicator is sometimes not displayed correctly, and you may not be able to operate
flmctions using cassette memory. Clean the gold plated connector with a cotton wool
swab, about every 10 times that the cassette is ejected. [b]
[a]
[bl
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