Check <device>

Connection

What this message means:

The specified device is either not fully connected to the printer or is experiencing a hardware failure.

What you can do:

Reestablish communication by removing the specified device and reattaching it to the printer.

In the case of a hardware failure, turn the printer off and back on. If the error recurs, turn the printer off, remove the specified device, and call for service.

Clearing Job

Accounting Stat

What this message means:

The printer is deleting all job statistics stored on the hard disk.

What you can do:

Wait for the message to clear.

Close Duplex Doors

What this message means:

The printer duplex doors are open.

What you can do:

Close the duplex doors to clear the message.

Close Top Cover

What this message means:

The printer top cover is open.

What you can do:

Close the printer top cover to clear the message.

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Lexmark 812 manual Check device Connection, Clearing Job Accounting Stat, Close Duplex Doors, Close Top Cover