Korg Mono/Poly

Now that I think about what you asked alittle more it sounds like 
your in poly mode. When the mono/poly is in poly mode it plays 
different VCOs when a new key is hit. To make sure it is in tune I 
like to put the mono/poly in UNISON mode. I also put all the VCOs (1 
through 4)on the same WAVEFORM and OCTAVE. Make sure the mono/poly is 
on for about 30 minutes before you try to tune it. And make sure that 
the tune knobs (right of the waveform knobs) are dead center. You 
want to tune the MASTER TUNE first. If not all your work will be for 
nothing. Turn VCO 1 LEVEL up all the way and the rest (VCOs 2-3) all 
the way down. If i remember correctly the tune screw (located inside 
the mono/poly on the board marked KLM-398) for VCO 1 is in the third 
position. I could be wrong. After the first VCO is in tune to another 
source (say another keyboard) you can tune the rest of the VCOs to 
the first one. Turn VCO LEVELs 1 and 2 up. Find the turn screw for 
VCO 2 and turn it intil it is in tune with the first VCO. . then tune 
VCO3 to VCO1 then VCO4 to VCO1.  I cant stress enough how important 
it is to make sure that your on the board marked KLM-398. There are 
other knobs inside the mono/poly that when you turn them it will mess 
with the tuning. Make sure you dont turn them. If you do you will 
need a digital volt meter to correct this. (Detailed instructions can 
be found in the calibration manual)I hope these instructions are 
clear enough. GoodLuck!!

--- In korg_mono-poly@yahoogroups.com, "analog_geek" <marsholie@h...> 
wrote:
> 
> "Open the top of your Mono/Poly. On the underside, dead center, is 
a 
> little brown PCB with "KLM-398" on it. There are four little silver 
> potentiometers on there- they each have a little slot in the center 
> where a jeweler's screwdriver will fit. Plug in your Mono and turn 
it 
> on, plug in some headphones, and you can turn those pots until all 
> the oscs are humming in tune."
> I got this information at Zen mono/poly in my links section.
> 
> 
> Make sure you turn one VCO up at a time. And also the tune knobs 
are 
> not in order. EX: turning tune screw one will not tune VCO 1. It 
will 
> take you alittle time to firgure out which one tunes which VCO. 
MAKE 
> SURE YOU DONT TURN THE WRONG KNOBS! there are other knobs in there 
> that are not for tuning. Be sure your turning the right ones.
> 
> 
> 
> --- In korg_mono-poly@yahoogroups.com, "mozgmozg23" 
<mozgmozg23@y...> 
> wrote:
> > 
> > 
> > Hi. I've got a problem with my mono\poly- it's completely out of 
> > tune: for example the first "C" note is not like second "C" and 
> > third "C" is more like "D"... So, can anyone tell me how to tune 
it?