Error codes konica minolta

Code: C2152 ... C2158
Description:
• C2152: Transfer belt fault at initial position return • C2153: Transfer belt spacing fault at K pressure switching • C2154: Transfer belt contact fault at all pressure switching • C2155: Transfer belt contact fault after K pressure established • C2156: Transfer belt spacing fault after all pressure established • C2157: Transfer belt contact fault at all retraction switching • C2158: Transfer belt contact fault after all retraction established
• C2152: The state of the 1st transfer pressure sensor/K (PS51) or the 1st transfer pressure sensor/YMC (PS52) is not changed within a predetermined period of time during an initial position return. • C2153: Unblocking of the 1st transfer pressure sensor/K (PS51) and blocking of the 1st transfer pressure sensor/YMC (PS52) are not detected within a predetermined period of time after the K pressure sequence has been started. • C2154: Unblocking of the 1st transfer pressure sensor/K (PS51) and unblocking of the 1st transfer pressure sensor/YMC (PS52) are not detected within a predetermined period of time after the all pressure sequence has been started. • C2155: The 1st transfer pressure sensor/K (PS51) is blocked or the 1st transfer pressure sensor/YMC (PS52) is unblocked after the lapse of a predetermined period of time after the K pressure sequence has been completed. • C2156: The 1st transfer pressure sensor/K (PS51) or the 1st transfer pressure sensor/YMC (PS52) is blocked after the lapse of a predetermined period of time after the all pressure sequence has been completed. • C2157: "Switching from pressure to retraction" is not detected with respect to the 1st transfer pressure sensor/K (PS51) and the 1st transfer pressure sensor/YMC (PS52) within a predetermined period of time after a retraction sequence has been started. • C2158: The 1st transfer pressure sensor/K (PS51) or the 1st transfer pressure sensor/YMC (PS52) is unblocked after the lapse of a predetermined period of time after a retraction sequence has been completed.
Causes:
• Transfer belt unit • 1st transfer pressure motor (M21) • 1st transfer pressure sensor/K (PS51) • 1st transfer pressure sensor/YMC (PS52) • Process drive board (PDB) • MFP board (MFPB)
Remedy:
1. Check the connector between M21-relay CN428-PDB CN7 for proper connection and correct as necessary. 2. Check the connector of M21 for proper drive coupling and correct as necessary. 3. Check the transfer roller pressure gear of the transfer belt unit for proper engagement and the roller for rolling operation, and correct any faulty motion. 4. Check the connector between PS51-relay CN297-MFPB CN4E for proper connection and correct as necessary. 5. Check the connector between PS52-relay CN297-MFPB CN4E for proper connection and correct as necessary. 6. PS51 I/O check, sensor check • Control signal: MFPB CN4E-1 (ON) • Location of electrical component: 15-C 7. PS52 I/O check, sensor check • Control signal: MFPB CN4E-4 (ON) • Location of electrical component: 15-C 8. M21 load check • Check code: 24 • Multi code: 1, 2, 3, 4 • Control signal: PDB CN7-5 to 8 • Location of electrical component: 17-P 9. Replace M21. 10. Replace the transfer belt unit. 11. PDB F2 conduction check 12. Replace PDB. 13. MFPB F2E conduction check 14. Replace MFPB.