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Need a service manual or schematic for the HP 8901A power supply, the +15V is missing after change the shorted diode for the relay coil on the power supplu board.
See if this one matches up. It's for model HP8901B but I would think the power supply would be the same. A power supply schematic is on page 105 of the pdf which is volume 203,
the last one in the list here: http://www.petergottlieb.com/docs/hp/8901/
Thanx for the schematic but there are not the same supply i the A and B variant. I did some fault finding yesterday and found a broken power darlington transistor "3-351" and it should be a 2N6053, so now I need to find a supplyer of that or a replacement.
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