I need a repair manual?

I need an accurate repair manual for a Whirlpool LHW0050PQ0, compact front load washer. I have a problem on one of the circuit boards and will be damned before I shell out $400 +/- for circuit boards which cost approximately 1/2 the price of the friggin' machine in the first place. I have a friend who is an electronics nerd/genius who claims he can troubleshoot the boards if he has the circuit diagram, so I assume the same would be conatined in a good service manual