Updated 16 December 2014
preliminary version ~ Not yet published to web
The BleusNak 680ZX Project
Rehab & Maintenance of a Legendary Nakamichi Cassette Deck
Here's the Nak 680ZX partially undressed. First evaluation of the insides about to commence.
Refer to the BleusNak CyberSpot main page for additional info on this deck and other cassette deck beauties.
Two photos of the 680ZX partially disassembled on the bench, being prepared for initial
diagnostic specifications evaluation and flywheel belt replacement.
As the project continues, including expert assistance from a good friend and pro technologist, we will post photos showing progress of the BleusNak 680ZX cassette deck rehabilitation. We hope that this page of photos and explanation will intrigue and help you understand what goes on inside of a classic Nakamichi cassette deck. Enjoy the view, ask questions if you wish!
A view of the cassette bay with partial transport frame pieces removed to allow inspection of reel hubs erase,
record & playback heads, and head adjustment mechanism.
Here's a glimpse of the 680ZX stripped open to reveal bias, level and azimuth adjustment control components, plus a view of the bottom solid-state preamp circuit boards and wiring harness. A lot of electronic components packed into the inner frame of this deck!
A clear view of the critical capacitor and preamp circuit boards. Note the orange colored capacitors, often these little orangies are the cause
of problems due to age and leakage. That's where reference to the term 'Orange Cap Disease' originates.
(replace photo with 680zx tilt-check-gauge-photo)
Big work tearing down, diagnosing, adjusting, replacing, testing and reassembling a rig as sophisticated as the Nak 680ZX cassette deck.
The photo above shows use of the Nakamichi Tilt Check Gauge in operation. This gauge checks correct tilt of record and playback magnetic heads.
This maintenance adjustment is as essential as azimuth or other key alignment procedures. After doing this tilt gauge adjustment and verification,
the head top surface will be perfectly parallel to the tape surface. Since play and record heads are floating independently in a Nakamichi deck,
this step ensures tape path movement is ideal and correct for tape record and playback performance.
Intro and chronological status of project activities will be posted here.......
For those that are seeking expert advice and technical services for Nakamichi 680ZX and other cassette decks,
contact Willy Hermann Services in the San Francisco, CA metro region in USA:
Introducing Willy Hermann Services
Future BleusNak project ~ Rehabbing the most exhalted and esteemed
Nak 550 Versatile Recording System Components, which is being planned for sometime during year 2016.
Welcome to the Mohican Pass basement vault!
Return to KJ Bleus' Nakamichi CyberSpot
Created 26 March 2014
Updated 16 December 2014