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