Samsung MULTIXPRESS CLX-9251 Series Service Manual page 293

► Error Code
C3–5411
C3–5414
► Error message
Black imaging unit is not installed. Install it.
Black Imaging Unit Failure: #C3-5414. Install imaging unit again.
► Symptom
The black drum unit is not installed. / The CRUM data is not detected. / The machine can't read the charger resistance
of the imaging unit.
► Troubleshooting method
1) Open the front cover.
2) Remove the waste toner container.
3) Remove and reinstall the black drum unit
(Refer to 3.2.2.1. Drum Unit)
4) Install the waste toner container.
5) Close the front cover.
► Error Code
C3–5512
► Error message
Black imaging unit is not compatible. Check user's guide
► Symptom
Black drum unit is not compatible.
► Troubleshooting method
1) Open the front cover.
2) Remove the waste toner container.
3) Remove the black drum unit. Check if the drum unit is compatible with the machine.
4) If the drum unit is not a samsung genuine, replace it with a new one.
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4. Troubleshooting
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