What transformer for Linn LK140?

I just got a completely brand-new LK140 mainboard off ebay. All that's missing to complete the amp is a transformer and a case/heatsink. The rest of the power supply (rectifier diodes and electrolytic capacitors) is there on the board as well. What I don't know is what output voltage I should get from the transformer. Can anyone help me out with a schematic, stick some test leads into his LK140 or give me any other hint? Thanks!