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P98-934 : communication error between MCTL PCB and RF PCB, on RF PCB side.
Translation: the rf reader in the drum did not communicate with the mechanical control board. First try turning off the machine and back on. Second try resetting with holding the reset key while turning on the machine. Next try reseating the drum in the machine, therefore reconnecting the drum plug to the machine.
If none of that works then the rf tag reader inside the drum is at fault. Now that can be as simple as it's out of position or as bad as the rf reader pcb needs replaced.
Good luck.
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