I got a new, CS-5550ci (Less than 60K copies) that I installed a PF-740 about 1 Month ago, customer called in because the MFP cannot detect the PF-740 trays (2 x 1500 sheet), The Event Report shows 2 - C1800 Error codes (PF communication code) I've 906 the device, re-seated both connectors, I'm thinking either the PF Main Board or the MFP's Engine board, possibly Wire Harness (but no apparent physical damage) any ideas?
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