Roland System 100M

ringo.fire · 6th September 2006, 07:41 AM

hi!

does anybody has a plan about the system 100M?
mine is out of tune, means the oscillators are loose about 5% per octave
I also dont get it connected to CV (doepfer MCV4) notes will start but not end....

any help appreciated!

rx3000 · 7th September 2006, 08:58 AM

i have no plans but i seem to remember there was a small screw hole on the back (?) to the unit which allowed you to scale the octaves correctly. Play notes in octaves from low to high and then use a small screwdriver to turn until the notes are in tune and the scaling is done.

amino · 7th September 2006, 09:19 AM

I had a dual VCO module (112) that was calibrated for exactly 1.2V/Oct!? I opened it up and as far as I remember it was pretty easy to find out what the trim pots were doing.

The schematics are here anyway:

http://machines.hyperreal.org/manufa...0m/schematics/

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6th September 2006, 07:41 AM	#1
ringo.fire Gear nut Join Date: Nov 2004 Location: Erfurt/ Germany Posts: 103	Roland System 100M hi! does anybody has a plan about the system 100M? mine is out of tune, means the oscillators are loose about 5% per octave I also dont get it connected to CV (doepfer MCV4) notes will start but not end.... any help appreciated! __________________ ringo.fire www.atomino-studio.de

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7th September 2006, 08:58 AM	#2
rx3000 Gear Head Join Date: Nov 2005 Posts: 60	i have no plans but i seem to remember there was a small screw hole on the back (?) to the unit which allowed you to scale the octaves correctly. Play notes in octaves from low to high and then use a small screwdriver to turn until the notes are in tune and the scaling is done.

7th September 2006, 09:19 AM	#3
amino Gear addict Join Date: May 2005 Location: Sweden Posts: 438	I had a dual VCO module (112) that was calibrated for exactly 1.2V/Oct!? I opened it up and as far as I remember it was pretty easy to find out what the trim pots were doing. The schematics are here anyway: http://machines.hyperreal.org/manufa...0m/schematics/