Ran into a strange error code today..It's on a LJ 4350 and originally occurred after printing a job. The error was 49.4C02. I swapped out the formatter board with the embedded jet direct assy..even just sitting idle the error code will pop-up. The service manual says this could be caused by invalid print commands etc..I had the customer print from different programs and from different workstations with the same results..seems to point towards the printer or associated cabling. Any ideas as to what could cause this ? Has anyone seen this particular error before ?

Thanks,
Murphy