Vintage Synth Repair

Hi there,

I'm still trying to get this Jupiter 6 going here... it locks up on boot with the lfo 2 light flashing.  I found the problem is somewhere on the 4 voice board... I can measure 5volts on the dac offset which is wrong... but I can unlock the 4v board (and play the 2 voice board)by grounding test point 1 & 0 bringing it where it should be...0v.  I've been trying to sort this out for awhile now...  I think I've realized one reason I can't seem to get anywhere is somehow the circuit board revision I have is not in any of the service manuals on the net. 

 All of the manuals I find are the "Larry Hendry" version and do not help.  My boards don't use the ITS80141 DAC but have a circuit board with some motorola dac and some other 40HXX series chips soldered into a socket directly into the spot the 80141 is.  Some of the resistors are different too, like in a totally different spot.

Does anyone know the circuit board I'm talking about and have the missing pages from the service manual available?