First, determine what it is about the voice that is “different.” Is it the
“tone?” Then it may need a VCF calibration. Is it the “level?” Then it may
be a VCA calibration. Is it the “tuning?” Then it may need a Mod System
calibration, or a VCO may be defective.
If the tone is different, refer to the VCF section of the manual and
calibrate or troubleshoot the VCF circuits. If the level is different, refer to
the MIXER section and troubleshoot the VCAs. If the Mod System is at
fault, refer to the Mod System overview and then see whether it’s the
ANA1, ANA2, or VCF card. If there’s a VCO problem, refer to the VCO
section of this manual.
A strange “clicking” or “thumping” is heard whenever a key is pressed.
Is the click part of a patch? Play the null patch and see if it goes away.
Try turning off the VCOs in the null patch to see if it’s still there. Maybe
the VCA offsets on the mixer card need calibrating. Usually, only one
voice is out, so you’ll have to use the SET page to find the culprit.
One program is out of tune but the rest are O.K.
This sounds like a classic Mod System “problem” where VCO modulation
is on ever so slightly. A problem on “one program” is usually an indication
that the program rather than the instrument is at fault.
Pitch bend on the left is different than on the right.
This may be a Mod System setting, but it can also be a calibration on
ANA2 or the POT PANEL.
