942.02

The yellow toner cartridge needs maintenance. Call for service.

943.02

The black toner cartridge needs maintenance. Call for service.

900–999 Service <message>

1Turn the printer off.

2Unplug the power cord from the wall outlet.

3Check all cable connections.

4Connect the power cord to a properly grounded outlet.

5Turn the printer back on.

If the service message appears again, contact Customer Support, and report the message.

Understanding printer messages

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Lexmark 26C0231, X54x, 26C0230, X544DN manual 942.02, 943.02, Service message, 162