Originally Posted by
allan
If some problem reoccurs the machine would latch the unit for service and safety reasons.
You should goto service mode -> system 1 -> problem unit isolation and unset the scanner.
But first look in the counter history for the error code that caused the problem. It would probably just happen again.
for the ??? you get next to the paper icon, it means the paper size detection does not work correctly or there could be paper stuck behind the tray.
Remove the trays and inspect for damage. Some of the problems does not appear obvious so the inspect it properly.
Sensor check mode under service mode -> state confirmation is very helpful in finding problems.
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