Error codes konica minolta

Code: C5351
Description:
DC power supply cooling fan failure to turn. The fan lock signal remains HIGH for a predetermined continuous period of time while the fan is turning.
Causes:
• DC power supply cooling fan (FM9) • DC power supply (DCPU) • MFP board (MFPB)
Remedy:
1. Check the connector between FM9-relay CN333-MFPB CN23E for proper connection and correct as necessary. 2. Check the fan for possible overload and correct as necessary. 3. FM9 load check • Check code: 42 • Multi code: 9, 10 • Control signal: MFPB CN23E-3 (DRIVE), MFPB CN23E-5 (LOCK) • Location of electrical component: 8-K 4. Replace FM9. 5. Replace DCPU. 6. MFPB F6E conduction check 7. Replace MFPB.