Yes. Just clip your black test lead to the metal chassis. And probe with the red test probe. Mini grabbers are highly recommended .I just want to make sure I do this measurement correctly . so measure emitter to the chassis,collector to chassis, and base to chassis for tr 572?
I think you have E and B reversed. The base of TR577 should be the same voltage as the collectors of TR575 and 576.577 b= -.08v c= -1v e= -0.16v
575- base to chassis 0v, collector to chassis -.016v ,emitter to chassis 0v
576- base to collector 4.83v,collector to chassis 0.16v,emitter to chassis 0v
When properly installed. The positive lead of C584 is connected to ground. Silkscreening on the yamaha circuit boards has numerous errors.When replacing caps. I always try to pay attention to the polarity of the old cap. I don't rely on the silkscreen..I am not sure what you mean by positve lead to chassis ground .