Hi
I'm just starting to troubleshoot my own unit so I cant claim I know anything. But when one have already done everything and it still don't work I usually start from scratch again.
What voltage do you on pin7 IC18 ? (next to the PC1 optocoupler)
---In PolySix@yahoogroups.com, <polysix@yahoogroups.com> wrote:Hello kind polysix users!
I am having tuning issues with my poly6... ive replaced the optocoupler and resistor and replaced ic16 with a new tl072 chip, but the keyboard is still having the same scaling issues as before. As I go through the manual for tuning it, I keep on reading about VR2, 14 and 15 and on the schmatic for klm-366 I see these pots, but i dont have them on my board... what is going on? I have vr1, vr3, vr4, and vr5 on klm366 and I have another VR1 on daughterboard KLM-396A. Here are some pictures of my board so you can get a better idea:
http://www.freakylamps.com/IMG_3119.JPG
http://www.freakylamps.com/IMG_3120.JPG
http://www.freakylamps.com/IMG-20130924-00375.jpg
Ive tried everything to get this thing to be reasonably intune, but some octaves are always up to a forth out of tune...
any insights? Thanks yall!
-william
