Samsung ProXpress M453x series Service Manual page 138

4. Troubleshooting
► Error Code
C1–1712
► Error message
Toner Cartridge Failure: #C1-1712. Call for service
► Symptom
The data of CRUM is not detected. / CRUM is defective.
► Troubleshooting method
1) Open the front cover. Check if the toner cartridge is installed.
2) Remove and reinstall the toner cartridge.
3) If the problem persists, check if the toner cartridge modular jack is contaminated or deformed.
4) Replace the toner cartridge with new one.
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