56 Serial port <x> disabled
•Press the down arrow button until 
Continue appears, and then press 
to clear the message. The printer discards any data received through the serial port.
•Make sure the Serial Buffer menu item is not set to Disabled.
56 Standard USB port disabled
•Press the down arrow button until 
Continue appears, and then press 
to clear the message. The printer discards any data received through the USB port.
•Make sure the USB Buffer menu item is not set to Disabled.
56 USB port <x> disabled
•Press the down arrow button until 
Continue appears, and then press 
to clear the message. The printer discards any data received through the USB port.
•Make sure the USB Buffer menu item is not set to Disabled.
57 Configuration change, held jobs were not restored
Press the down arrow button until 
Continue appears, and then press 
to clear the message.
58 Too many flash options installed
1Turn the printer power off.
2Unplug the power cord from the wall outlet.
3Remove the excess flash memory.
4Connect the power cord to a properly grounded outlet.
5Turn the printer power back on.
58 Too many trays attached
1Turn the printer power off.
2Unplug the power cord from the wall outlet.
Note: Optional trays lock together when stacked. Remove stacked trays one at a time from the top down.
3Remove the additional trays.
4Connect the power cord to a properly grounded outlet.
5Turn the printer power back on.
61 Remove defective hard disk
•Press the down arrow button until 
Continue appears, and then press 
to clear the message and continue printing.
•Install a different hard disk before performing any operations that require a hard disk.
Understanding printer messages
153
