Hi Mike,
yes, I've gone thru the troubleshooting procedure and circuit description also checked the waveforms. I do have CPU RES_7.5 waveform and much of the other waveforms listed for each section, but do not have RES_6.5 & RES_5.5 and also have no tone. D/A adjustment procedure #2 says to adjust VR4 to obtain 4V out of IC38-7, but BR9 not outputting anything either and 81c55 PA ports are all Low so, IC38 is not supplying voltage to EG cct. for the tone.
I'm getting lost here..
What shall I check next?