Problem Calibrating the OB-6 Oscillators and Filters

[dave77]

Problem Calibrating the OB-6  Oscillators and Filters
Stop calibating in F31

[RobustAmerican]

Power down the synth and remove any midi and USB cables that are connected to the synth. Power back up and try the calibration again with the midi & USB disconnected. This worked for me once when mine got stuck.

[dave77]

Power down the synth and remove any midi and USB cables that are connected to the synth. Power back up and try the calibration again with the midi & USB disconnected. This worked for me once when mine got stuck.

i tried .. but it always stop at F31

[dave77]

I tried again, now it's fine

[dave77]

the problem persists F31 Stop CAlibrating

[dave77]

discovered the problem, One voice of the second VCO does not work

[BestRegards]

hey I'm having the exact same issue. Both will calibration and with the VCO voice. Did you ever manage to solve it?

[Mystic38]

I am not the OP but also had an F31 Error..

if nothing in the troubleshooting guide and multiple attempts still doesn't work you *could* try and re-seat the voice cards.

voids your warranty, it will blow up and destroy half a residential block, if you do this i told you not to..etc etc..

1. unplug it...
2. Remove wood trim sides
2. remove two screws near side top edges either side
3. front edge of top hinges up.
4. the six voices cards are obvious, remove inspect and replace each in turn and reseat.. they are installed similar to a memory module with side clips.
5. reassemble

Cannot say it will work for you, but it did for me.. Am two calibrations alter and its rock solid...enjoying quality time.

hey I'm having the exact same issue. Both will calibration and with the VCO voice. Did you ever manage to solve it?

[Quatschmacher]

Sometimes clearing the filter calibration first works. On at least one version of the firmware it is a necessary step after installation. There is a write-plus-number-button combination for it, I just can’t remember off the top of my head which one. It’s in the documentation somewhere.

[Mystic38]

Agreed, hopefully everyone has followed the troubleshooting guide (which includes this step) before they open the case up!

For posterity, its pressing "MANUAL" plus "3" to clear the tables.

Sometimes clearing the filter calibration first works. On at least one version of the firmware it is a necessary step after installation. There is a write-plus-number-button combination for it, I just can’t remember off the top of my head which one. It’s in the documentation somewhere.