Error code Description Action
377.51 No encoder feedback detected from the output
option 1/mailbox main/interface motor.
1 POR the machine.
2 Reseat the output option on the printer.
3 Open the rear door and clear obstructions along
the paper path.
If the problem remains, then go to “Mailbox failure
service check” on page 140.
377.52 Motor stop error—the output option 1/mailbox
main/interface motor kept on running some time
after the motor was commanded to stop.
378.51 No encoder feedback detected from the output
option 2/mailbox main/interface motor.
378.52 Motor stop error—the output option 2/mailbox
main/interface motor kept on running some time
after the motor was commanded to stop.
379.51 No encoder feedback detected from the output
option 3/mailbox main/interface motor.
379.52 Motor stop error—the output option 3/mailbox
main/interface motor kept on running some time
after the motor was commanded to stop.
381.51 No encoder feedback detected from the output
option 1/finisher/offset stacker ejector motor.
381.52 Motor stop error—the output option
1/finisher/offset stacker ejector motor kept on
running some time after the motor was commanded
to stop.
381.54 No encoder feedback detected from the output
option 1/finisher/offset stacker main/interface
motor.
381.55 Motor stop error—the output option
1/finisher/offset stacker main/interface motor kept
on running some time after the motor was
commanded to stop.
381.56 The output option 1/finisher/offset stacker
main/interface motor went over the normal speed
382.51 No encoder feedback detected from the output
option 2/finisher/offset stacker ejector motor.
382.52 Motor stop error—the output option
2/finisher/offset stacker ejector motor kept on
running some time after the motor was commanded
to stop.
382.54 No encoder feedback detected from the output
option 2/finisher/offset stacker main/interface
motor.
382.55 Motor stop error—the output option
2/finisher/offset stacker main/interface motor kept
on running some time after the motor was
commanded to stop.
4063
Diagnostic information
127