Error codes konica minolta

Code: C2A21 ... C2A24
Description:
• C2A21: Toner cartridge/C new release failure • C2A22: Toner cartridge/M new release failure • C2A23: Toner cartridge/Y new release failure • C2A24: Toner cartridge/K new release failure
The status with the new unit is not cleared after the new toner cartridge is set.
Causes:
• Toner cartridge/Y,M,C,K • MFP board (MFPB)
Remedy:
1. Clean the connection between the toner cartridge and the main body if dirty. 2. Reinstall the toner cartridge. 3. Check the connector between the toner cartridge/Y-relay CN503-MFPB-CN8E for proper connection and correct as necessary. 4. Check the connector between the toner cartridge/M-relay CN503-MFPB-CN8E for proper connection and correct as necessary. 5. Check the connector between the toner cartridge/C-relay CN504-MFPB-CN8E for proper connection and correct as necessary. 6. Check the connector between the toner cartridge/K-relay CN504-MFPB-CN8E for proper connection and correct as necessary. 7. Replace the toner cartridge. 8. Replace MFPB.