Error codes konica minolta

Code: C3B02, C3B03
Description:
C3B02: • IH malfunction (CPU) • IH power supply for incorrect marketing area (The IH power supply for incorrect marketing area is installed)
C3B03: IH malfunction (monitor)
C3B02: A failure in communication with the fusing CPU continues for a predetermined period of time.
C3B03: Though the IH heater is OFF, mechanically, the ON status is detected. (Malfunction of IH heater operation)
Causes:
• IH power supply unit (IHPU) • Noise filter (NF1) • MFP board (MFPB)
Remedy:
1. Check the open/close operation of the upper right door. 2. Check the connector between NF1 CN2-IHPU CN1 for proper connection and correct as necessary. 3. Check the connector between IHPU CN6-MFPB CN26E for proper connection and correct as necessary. 4. Check the connector between NF1 CN3-MFPB CN29E for proper connection and correct as necessary. 5. Check the connector between CN1AC-NF1 CN1 for proper connection and correct as necessary. 6. Replace IHPU. 7. MFPB F2E or F21E conduction check 8. Replace MFPB.