Roberts Radio C9950 - Manual (Page 21)

20
Preventing accidental erasure
To safeguard your recordings against accidental erasure, break off the
appropriate rear tab on the cassette as shown . There is one tab for each
side of the cassette. This will prevent the Record button from being
pressed. To restore the cassette to normal, seal the tab openings with a
small piece of self-adhesive tape.
Safety tab side A Safety tab side B
Cleaning the heads
The binder and oxide from magnetic tapes can accumulate on the pinch
roller (A) the capstan shaft (B) and also the heads (C and D). This will
impair the sound quality.
To clean these parts proceed as follows:-
1. Turn off the power to the unit.
2. Press the Stop/Eject button.
3. Press the Play button and the heads will be clearly seen.
4. Clean the surfaces (A, B, C, D) with a lint free rag or cotton swab
soaked in industrial alcohol. Press the stop/eject button as soon as
cleaning is over.
Cassette tapes
High quality 90 min (C90) tapes are recommended for use in your
cassette recorder. In tests these provide a balance between maximum
recording time and prolonged tape life. Audio cassette tapes are available
up to 120 minutes in length, however the tape material is thin and may
stretch or break during recording or playback & are not recommended for
use with your cassette recorder.