【Overview】 ・This item is a repaired and restored 45-year-old junk item. Although the normal operation of all functions has been repeatedly confirmed, it is being sold as a junk item due to its age. Due to the recent increase in return scams, we are unfortunately unable to accept returns. We kindly request no claims and no returns. 【Product Description】 Product: Stereo Cassette Deck Manufacturer: Sony Model No.: TC-K71 Release Date: Around 1980 Price: 74,800 yen 【Appearance】 ・There is some rust on the function keys of the front panel, which is characteristic of this model. Also, there are multiple thin rust-like stains on the body, but no dents. This is not recommended for those who are concerned about the appearance, but it is a good deal for those who prioritize the sound quality of a 3-head machine. 【Repaired and Adjusted Points】 ・Complete disassembly, cleaning, and lubrication of the drive unit front, rear, and head block. ・Recording/playback volume, ethanol ultrasonic cleaning. ・Repair of fast forward and rewind mechanisms. ・Replacement of dual capstan, capstan, and counter belts. ・Repair of power supply circuit and headphone output circuit. ・Recording and playback head azimuth adjustment, demagnetization, and cleaning. ・Cleaning of pinch rollers and capstan. ・Servo motor speed adjustment. ・Playback level, recording sensitivity, and LED peak meter sensitivity adjustment. 【Operation Check】 ・This deck has a 3-head, closed-loop, dual-capstan configuration. ・All operations, including recording, playback, pause, fast forward, rewind, timer, and memory functions, have been confirmed. 【Sound Quality Check】 ・As far as listening to commercially available music tapes, I believe it has sound quality that is sufficient for music appreciation as a 45-year-old cassette deck (wow and flutter 0.08%, which is very good). (Playback may not be possible depending on the condition of the tape) 【Accessories】 ・One test tape used for recording, playback operation check, and adjustment. 【Important Notes】 ・Please use it for about 1-2 hours a day, as the resin parts have deteriorated over time and may cause malfunctions. ・The playback speed (pitch) can be finely adjusted with the semi-fixed resistor in the servo motor circuit, but it requires opening the body.