: While they don't host the full service manual for public download, the Kurzweil Downloads & Support page provides FAQs and basic support materials for owners.
By taking the time to locate this manual, study the schematics, and calibrate the optics, you are preserving a vital piece of 1980s digital synthesis. Do not let your Midiboard become a heavy doorstop. Find the documentation, buy the trimmer tools, and bring that textured aftertouch back to life.
Since original parts are no longer manufactured, you will likely need to rely on the used market or specialty vendors. Specialty Vendors: Sites like
While Kurzweil designed the electronics, the physical keybed was manufactured by Fatar. However, Kurzweil customized the action heavily. Over time, the felt bushings in the keys degrade, and the mechanical action becomes noisy or sticky. The service manual includes the "Key Action Disassembly" section, providing the specific order in which keys must be removed to avoid snapping the plastic brackets. It also details the mechanical calibration points for the let-off and hammer strike distance, ensuring the piano feels like a piano, not a typewriter. Kurzweil midiboard service manual
This section explains how the "Hal Galper" designed action translates physical movement into MIDI data. It describes the scanning matrix for the keys and how the pressure sensors detect individual finger weight for polyphonic aftertouch. 2. Disassembly and Reassembly
What are you seeing? (e.g., dead keys, power issues) Which firmware version is your board running? Do you need schematics for a specific circuit board?
is an active community of owners and technicians who share DIY repair advice and hardware upgrade tips (like the v3.0 EPROM upgrade). The Midiboard's GEX action : While they don't host the full service
Older internal power components often need recapping or replacement.
⚠️ Many free PDFs are incomplete (missing schematics or calibration). Check page count: a full manual is ~60–80 pages.
If you are one of the lucky—or stubborn—owners of a , you already know you are dealing with a unicorn. Released in 1987, this 88-note, velocity and pressure-sensitive controller is legendary for its wooden keys, unshakeable build quality, and the "feel" that digital pianos have tried to clone for decades. Find the documentation, buy the trimmer tools, and
The Kurzweil Midiboard is not just a controller; it is the last great wooden-keyed behemoth. It deserves to be serviced correctly. The is more than a repair guide—it is the biography of the machine.
relies on a simple lever principle where pressing the front of the wooden key causes the rear to strike a pressure sensor. Unlike standard Fatar actions, this design is more akin to a traditional piano or Rhodes, allowing for its famous musical aftertouch response. explanation or instructions for the Version 3.0 upgrade