Samsung ML-451 Series Service Manual page 144

4. Alignment and Troubleshooting
► Error Code
C1–1110
► Error message
Prepare new toner cartridge.
► Symptom
The remaining toner in cartridge is low.
► Troubleshooting method
Check the life remaining of the toner cartridge.
If its life is at the end, turn the machine off and replace the toner cartridge with new one.
► Error Code
C1–1120
C1–1140
► Error message
Replace with new toner cartridge.
End of life, Replace with new toner cartridge.
► Symptom
The remaining toner in cartridge is empty.
► Troubleshooting method
Check the life remaining of the toner cartridge.
If its life is at the end, turn the machine off and replace the toner cartridge with new one.
► Error Code
C1–1311
► Error message
Toner Cartridge Failure: #C1-1311. Install toner cartridge again.
► Symptom
The imaging unit does not get enough toner from the toner cartridge.
► Troubleshooting method
1) Turn the machine off then on.
2) Remove the toner cartridge.
Thoroughly roll the cartridge three or four times to distribute the toner evenly inside the cartridge. And reinstall
the toner cartridge.
3) Try to print out the sample page more than 20 pages.
4) Check the toner cartridge.
• Check if the toner cartridge is installed correctly.
• Check if the toner seal is removed perfectly.
• Check if the toner supply shutter between the toner cartridge and the imaging unit works normally.
5) Replace the toner cartridge. Print out the sample page.
6) Check if the toner supply motor works normally.
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