Complete service, not a repair. Every cassette deck that arrives here is 20+ years old and, in almost every case, has never been serviced before. Old grease hardens, oil in the capstan bearings dries out, plastic parts shrink and crack, rubber idlers and rollers de-vulcanize, electrolytic capacitors dry out and drift out of spec, and transistors lose contact with their heat sinks. Because of this, every deck goes through the same complete, standardized service procedure — not a spot-fix for a single symptom — including full mechanical service, azimuth and speed calibration, a detailed service report, photo documentation, a recorded test tape, and a warranty.
The ZX-9 is a refined version of the ZX-7, with an improved mechanism and amplifier — but like the ZX-7, it still runs on a belt-driven capstan transport, which makes belt replacement a key part of its service, just as with most standard Nakamichi decks.
Full disassembly and inspection to record the condition of the mechanism, capstan belts, and idlers before any work begins.
The capstan belt and hardened rubber parts are replaced, and all moving parts are re-lubricated.
Electrolytic capacitors are replaced, and all switches, potentiometers, and trimmers are cleaned and tested.
Azimuth, speed, and frequency response are tested and calibrated, and a final test tape is recorded and reviewed before the deck is returned.
Have a Nakamichi ZX-9 that needs the same treatment?
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