Samsung CLX-8640 series - Toner Cartridge Failure: #C1-5711. Call for Service; Toner Cartridge Failure: #C1-5712. Call for Service

4.Troubleshooting
►ErrorCode
C1–5711
C1–5712
►Errormessage
TonerCartridgeFailure:#C1-5711.Callforservice
TonerCartridgeFailure:#C1-5712.Callforservice
►Symptom
ThedataofCRUMisnotdetected.
►Troubleshootingmethod
1)Openthefrontcover.Checkiftheblacktonercartridgeisinstalled.
2)Removeandreinstalltheblacktonercartridge.
3)Iftheproblempersists,checkifthetonercartridgemodularjackiscontaminatedordeformed.
4)Replacetheblacktonercartridgewithnewone.
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