Spectra 60 T schematic needed

[Latole]

Hello ,
I have a Dean Markley Spectra 60 T in my shop.
Lead channel do not work.
It is a tube amp and lead channel is solid state

I can't find find the right schematic. Tho only one I found is for the 30 T, not exactly same.
Scroll to answer no 4

Thank"s if you can help me.

Picture is from Google