Olivetti d-Color MF920 Operation Manual page 171

941.02
The magenta toner cartridge needs maintenance. Call for service.
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>
1
Turn the printer off.
2
Unplug the power cord from the wall outlet.
3
Check all cable connections.
4
Connect the power cord to a properly grounded outlet.
5
Turn the printer back on.
If the service message appears again, contact Customer Support, and report the message.
Understanding printer messages
171