This is a professional-grade 3-head auto-reverse cassette deck. It achieves auto-reverse functionality with a 3-head design by rotating the recording and playback heads. The mode selection gear (the cause of the malfunction) has been replaced with a new, substitute gear. The deteriorated capstan belt has also been replaced. The idler and pinch roller have been polished and cleaned. Grease has been applied to each sliding part. After speed and azimuth adjustments, it has been confirmed that the auto-reverse function, recording, and playback work correctly. A tape used for recording and playback tests will be included. Regarding the exterior, there are many scratches on the front panel and top panel, which have been touched up to be less noticeable, but are still visible. Please check the condition of the scratches in the photos. While proper operation has been confirmed at present, this is an item of considerable age, so please understand that it is sold "as is" and without returns. Considering that it is believed to be approximately 30 years old since its manufacture, please consider this before purchasing.