Samsung CLX-9201 Service Manual page 282

4. Troubleshooting
► Error Code
C1–5311
► Error message
Black Toner Cartridge Failure: #C1-5311. Install black toner cartridge again
► Symptom
Black toner supply is inefficient or abnormal.
► Troubleshooting method
1) Open the front cover.
2) Remove the black toner cartridge. Shake the toner cartridge horizontally to distribute the toner evenly inside
the cartridge.
3) Check if the toner supply pipe is blocked. If it is closed, open it.
4) Close the front cover.
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