Discussion about the Korg PolySix synthesizer

Hallo to all again ! 
 I was messing with the D/A converter ,now  is ok
 --thanks to your help---

 Now the problem is still the one that brought me to start the 
 adjustment procedure.
 VCF and EG levels are not correctly stored in the programs for all
 the banks.

 Another question :during the klm366 VCF resonance adjustment
                   the manual say to check cn05-7 and adjust it to 0V
                   where is the trimmer?

 thanks 
 Petrolio