Based on phone footage that was not intended for uploading, this is a rough and ready illustration of the Sony TC-280's hybrid idler-and belt drive scheme.
Getting to this point is trivial, as the case and front panels simply unscrew. This is the machine after removing solidified grease from the mechanism, which was preventing proper operation.
The light-coloured rubber band straddling the tape counter is simply holding the auto-shutoff arm in the operating position, and is not part of the recorder.
The rewind function is unusual, in that the rubber belt passing over the large white idler is pushed against the payout reel to provide rewind drive, acting both to transfer motion onto the idler and to transfer motion away from it - I have not seen this approach before.
Kits of two belts (rewind drive and tape-counter drive) are currently available from the USA and Italy via eBay.
Негізгі бет SONY TC-280 Tape Deck - Arrangement of Idlers and Belts
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