• Code: C40A2
• Description: Mechanical controller PF communication data error. A CPU communication error is detected.
• Causes: MFP board (MFPB)
• Remedy: 1. Turn OFF the main power switch, disconnect and then connect the power cord. Wait for 10 sec. or more after connect the power cord, and turn ON the main power switch. 2. Rewrite the firmware. 3. MFPB F3E conduction check 4. Replace MFPB. NOTICE • Link to the layout drawings for related parts by each trouble code (S.60. C40A1 - C40A4, C5372, C5601 - C5606, CA051 - CA053, CC151, CC152, CC170 - CC186, CC191 - CC216, CD211 - CD242, CD401 - CD413, CD701 - CD703, CD705, CD706, CE001, CE003 - CE305, CEEE1, CEEE3)

• Code: C40A3
• Description: Mechanical controller PF transmission timeout. A CPU communication error is detected.
• Causes: MFP board (MFPB)
• Remedy: 1. Turn OFF the main power switch, disconnect and then connect the power cord. Wait for 10 sec. or more after connect the power cord, and turn ON the main power switch. 2. Rewrite the firmware. 3. MFPB F3E conduction check 4. Replace MFPB. NOTICE • Link to the layout drawings for related parts by each trouble code (S.60. C40A1 - C40A4, C5372, C5601 - C5606, CA051 - CA053, CC151, CC152, CC170 - CC186, CC191 - CC216, CD211 - CD242, CD401 - CD413, CD701 - CD703, CD705, CD706, CE001, CE003 - CE305, CEEE1, CEEE3)

• Code: C40A4
• Description: Mechanical controller PF communication pulse error. A CPU communication error is detected.
• Causes: MFP board (MFPB)
• Remedy: 1. Turn OFF the main power switch, disconnect and then connect the power cord. Wait for 10 sec. or more after connect the power cord, and turn ON the main power switch. 2. Rewrite the firmware. 3. MFPB F3E conduction check 4. Replace MFPB. NOTICE • Link to the layout drawings for related parts by each trouble code (S.60. C40A1 - C40A4, C5372, C5601 - C5606, CA051 - CA053, CC151, CC152, CC170 - CC186, CC191 - CC216, CD211 - CD242, CD401 - CD413, CD701 - CD703, CD705, CD706, CE001, CE003 - CE305, CEEE1, CEEE3)

• Code: C4101
• Description: Polygon motor rotation trouble • The polygon motor fails to turn stably even after the lapse of a given period of time after activating and changing rotation speed the polygon motor. • Motor lock signal detects HIGH for a given period time consecutively during the polygon motor is rotating.
• Causes: • PH unit • MFP board (MFPB)
• Remedy: 1. Check the connector between the PH unit-relay CN25-MFPB CN9E for proper connection and correct as necessary. 2. Replace the PH unit. 3. MFPB F12E conduction check 4. Replace MFPB. NOTICE • Link to the layout drawings for related parts by each trouble code (S.61. C4101)

• Code: C4501
• Description: Laser malfunction • SOS signal is not detected even after the lapse of a given period of time after starting the laser output. • SOS signal is not detected for a given period of time during printing or IDC sensor adjustment.
• Causes: • PH unit • MFP board (MFPB)
• Remedy: 1. Check the connector between the PH unit-MFPB CN18 for proper connection and correct as necessary. 2. Replace the PH unit. 3. MFPB F3E conduction check 4. Replace MFPB. NOTICE • Link to the layout drawings for related parts by each trouble code (S.62. C4501, C5610)

• Code: C5102
• Description: Transport motor failure to turn. The motor lock signal remains HIGH for a predetermined continuous period of time while the motor is turning.
• Causes: • Transport motor (M1) • MFP board (MFPB)
• Remedy: 1. Check the connector between M1-MFPB CN11E for proper connection and correct as necessary. 2. Check the loading status of the transfer belt drive, and correct the error as necessary. 3. M1 operation check • Control signal: MFPB CN11E-4 (REM), MFPB CN11E-7 (FGP) • Location of electrical component: 3-C 4. Replace M1. 5. MFPB F21E conduction check 6. Replace MFPB. NOTICE • Link to the wiring diagram (N.1. bizhub C287/C227) • Link to the layout drawings for related parts by each trouble code (S.63. C5102, C5103)

• Code: C5103
• Description: Transport motor turning at abnormal timing. The motor lock signal remains LOW for a predetermined continuous period of time while the motor remains stationary
• Causes: • Transport motor (M1) • MFP board (MFPB)
• Remedy: 1. Check the connector between M1-MFPB CN11E for proper connection and correct as necessary. 2. Check the loading status of the transfer belt drive, and correct the error as necessary. 3. M1 operation check • Control signal: MFPB CN11E-4 (REM), MFPB CN11E-7 (FGP) • Location of electrical component: 3-C 4. Replace M1. 5. MFPB F21E conduction check 6. Replace MFPB. NOTICE • Link to the wiring diagram (N.1. bizhub C287/C227) • Link to the layout drawings for related parts by each trouble code (S.63. C5102, C5103)

• Code: C5351
• Description: Power supply cooling fan motor failure to turn. The fan lock signal remains HIGH for a predetermined continuous period of time while the fan is turning.
• Causes: • Power supply cooling fan (FM1) • MFP board (MFPB)
• Remedy: 1. Check the connector between FM1-relay CN49-MFPB CN20E for proper connection and correct as necessary. 2. Check the fan for possible overload and correct as necessary. 3. FM1 operation check • Control signal: MFPB CN20E-7 (REM), MFPB CN20E-9 (LOCK) • Location of electrical component: 2-J 4. Replace FM1. 5. Replace MFPB. NOTICE • Link to the wiring diagram (N.1. bizhub C287/C227) • Link to the layout drawings for related parts by each trouble code (S.64. C5351)