LJ Pro300 color MFP M375nw. Power cycling, displays "49 service error - turn off the power, then press" on-screen.

Bike constantly, the power display "49 service error - turn off the power, then press ' on-screen before stopping.
For this printer only when it is connected to the network. Quite happy to sit quietly when printer NOT connected to the network.

Unplug the network cable from the printer, check and clear all print queues (there may be a doc pdf sitting in a pc or server print queue)

Once the queues have been dotted, restart the printer and reconnect the network cable.

If this does not cure the problem, then the likely problem is a defective formatter Board.

Good luck!

Tags: HP Printers

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