Olivetti PGL2545 Operation Manual page 313

Duplex unit (when Bulk Feeder is installed)
4
Open and close the top cover to clear the error. The printer warms up
and resumes printing.
1
Decrease the amount of paper in the Bulk Feeder.
2
Pull the Bulk Feeder out from the printer. Hold the bulk feeder with
both hands and lift to remove.
3
Pull out the cassette from the machine.
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Troubleshooting