[sdiy] Ensoniq keyboard calibration advice?

grant musictechnologiesgroup.com grant at musictechnologiesgroup.com
Thu Jun 30 22:08:49 CEST 2022

I just overcame this with a VFX-FD (SD?). Whatever the floppy disk version is called. I don't know that "continuity" will be enough in this case. Depends on your meter. You need a dead short between the two coil boards. I had to do the usual solder-bridge with wire as a couple of my connections were 10 or so ohms (maybe the worst was 100?). It would not boot until I did those.


------ Original Message ------
From: "Peter Pearson via Synth-diy" <synth-diy at synth-diy.org<mailto:synth-diy at synth-diy.org>>
To: "synth-diy mailing list" <synth-diy at synth-diy.org<mailto:synth-diy at synth-diy.org>>
Sent: 6/30/2022 12:00:01 PM
Subject: [sdiy] Ensoniq keyboard calibration advice?

Anyone on the list have insight or advice on getting Ensoniq gear to pass the keyboard calibration routine?  I'm looking at an ASR10 at the moment.  Cleaned the PCBs, resoldered the connectors (the only advice I've seen online), and checked continuity everywhere relevant I could think of.  No dice.  I haven't seen any in depth guide to dealing with this online aside from the "one simple trick" of resoldering the connector.

Ensoniq was very stingy with schematics but the keyboard section is posted here:


Any input would be greatly appreciated.  Thanks!
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