Samsung MULTIXPRESS CLX-9251 Series Service Manual page 281

► Error Code
C1–4311
► Error message
Cyan Toner Cartridge Failure: #C1-4311. Install yellow toner cartridge again
► Symptom
Cyan toner supply is inefficient or abnormal.
► Troubleshooting method
1) Open the front cover.
2) Remove the cyan 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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4. Troubleshooting
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