When I bought this, the pinch roller wouldn't engage the capstan thus tapes sounded like chipmunks. It is now fixed and play, fast-forward, rewind, and record all work perfectly.

Some info on the deck:

Manufactured in 1975/ 1976
Type: 2-head, single compact cassette deck
Track System: 4-track, 2-channel stereo
Tape Speed: 4.8 cm/s
Heads: 1 x record/playback, 1 x erase
Tape Type: type I, CrO2
Noise Reduction: B
Frequency Response: 30Hz to 13kHz (CrO2 tape)
Signal to Noise Ratio: 57dB (Dolby B)
Wow and Flutter: 0.15%
Total Harmonic Distortion: 2.5%

Dimensions: 35.5cm x 11.6cm x 24.4cm
Weight: ~4kg