Peavey 115PS Crossover problem

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I have a pair of Peavey 115PS speakers that both have problems with the crossovers. The woofers do not get a signal when using the full range inputs.

I'm pretty sure the problem is the switches in the 1/4" jacks, but I'm having a hard time figuring out what the pinouts are. Does anyone have schematics for these crossovers? The jacks are Switchcraft, but I can't make out the part numbers on them.
 
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