开云体育

I'm checking the performance of my newly acquired SM-220 and note that the levels of the two tone generator measured at TP1 and TP2 are 5.8V p-p which is nearly double the specified 3V.

?

So I decided to adjust them but found this to be impossible because VR108 is inaccessible (under the CRT) and I can't see VR107 anywhere. My PCB doesn't match the drawing in the service manual.

?

Any ideas please?

?

--

Mike G8GYW

OK scrub that. I ve just found the pot adjustment screws underneath the bottom cover ... ?.

?

--

Mike G8GYW