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I am trying to follow the 12V entry for the drive, which I should measure at p16-4…..
but nothing anywhere near it.
I should also see 12V at the “emitter crosspoint” of TR37 and TR38…..nothing again.
both Transistors have been tested off-board as ok which made me believe I should actually see the 12VDC at that crossing or shouldn’t I ?!
i can see the entry voltages – 14.1V & 15.5V – at R171 and R172 …..so, what is it that I am missing here and why isn’t the capstan getting the 12V either.
the drive unit looks like being hard-wired to the control board #2.