The Yamaha AN1x Synthesizer mailing list group photo

Yahoo Groups archive

The Yamaha AN1x Synthesizer mailing list

Index last updated: 2026-04-28 22:40 UTC

Message

Re: [AN1x] Ribbon stuck at lowest level

2003-10-10 by Ed Edwards

Joe,
Unfortunately, I think you're analysis is right.  Probably a hardware
problem.  That stock patch does not behave like that on my AN.  The symptom
of immediately going to a value when moved is the way a digital sensing
circuit behaves with a bad control.  Basically, the software doesn't waste
valuable time continuously polling the controllers - it relies on interrupt
hardware signals to change a value.  So what's going on is your ribbon is
somehow stuck on it's lowest value, but the operating system doesn't know
about this until you generate an interrupt by changing the controller - and
in your case when it's detected by the software it always changes to the
lowest value.

If you're brave and not intimidated by a screwdriver, pull out the 30 or so
screws on the back of the AN1x and check any connectors to the ribbon cable.
They may be just dirty or loose and re-seating them might be all that's
wrong.

Ed Edwards
Leader: Ezekiel's Wheel      \ufffd\ufffd\ufffd\ufffdRetro-Progressive Rock\ufffd\ufffd\ufffd\ufffd
http://www.untiedmusic.com/ezekiel
http://artists.mp3s.com/artists/227/ezekiels_wheel.html
\ufffd\ufffd.\ufffd\ufffd\ufffd.\ufffd\ufffd\ufffd.\ufffd\ufffd\ufffd.\ufffd\ufffd\ufffd.\ufffd\ufffd\ufffd.\ufffd\ufffd\ufffd.\ufffd\ufffd\ufffd.\ufffd\ufffd\ufffd.\ufffd\ufffd\ufffd.\ufffd\ufffd\ufffd.\ufffd\ufffd\ufffd.\ufffd\ufffd\ufffd.\ufffd\ufffd\ufffd.\ufffd\ufffd\ufffd.\ufffd\ufffd\ufffd.\ufffd\ufffd\ufffd.\ufffd\ufffd

Attachments

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.