• Code: C0880
• Description: Program archive problem • When power is turned on, the compressed program in the Flash ROM on the fax control PCB was not successfully decompressed.
• Causes: Defective fax control PCB.
• Remedy: Replace the fax control PCB and check for correct operation.

• Code: C0890
• Description: Fax control PCB CG FONT archive problem • When power is turned on, the compressed CG font in the Flash ROM on the fax control PCB was not successfully decompressed.
• Causes: Defective fax control PCB.
• Remedy: Replace the fax control PCB and check for correct operation.

• Code: C1010
• Description: Overcurrent detection of drawer 1 base motor • Excessive current has flowed through the first drawer base motor which elevates the bottom plate in the drawer. • Lift-up does not finish even after 8 seconds. • Detection occurs twice continuously after the drawer 1 is removed and then inserted.
• Causes: Defective upper drawer base motor. Defective bottom plate elevation mechanism of drawer 1. Defective main board of paper feeder. Defective engine controller PCB.
• Remedy: Replace the upper drawer base motor. Check whether there is an object that prevents the bottom plate of drawer 1 from operating normally. Replace the main board of paper feeder. Replace the engine controller PCB and check for correct operation.

• Code: C1020
• Description: Overcurrent detection of drawer 2 base motor • Excessive current has flowed through the second drawer base motor which elevates the bottom plate in the drawer. • Lift-up does not finish even after 8 seconds. • Detection occurs twice continuously after the drawer 2 is removed and then inserted.
• Causes: Defective lower drawer base motor. Defective bottom plate elevation mechanism of second drawer. Defective main board of paper feeder. Defective engine controller PCB.
• Remedy: Replace the lower drawer base motor. Check whether there is an object that prevents the bottom plate of drawer 2 from operating normally. Replace the main board of paper feeder. Replace the engine controller PCB and check for correct operation.

• Code: C1030
• Description: Overcurrent detection of drawer 3 base motor • Excessive current has flowed through the third drawer base motor which elevates the bottom plate in the drawer. • Lift-up does not finish even after 8 seconds. • Detection occurs twice continuously after the drawer 3 is removed and then inserted.
• Causes: Defective upper drawer base motor. Defective bottom plate elevation mechanism of third drawer. Defective main board of paper feeder. Defective engine controller PCB.
• Remedy: Replace the upper drawer base motor. Check whether there is an object that prevents the bottom plate of drawer 3 from operating normally. Replace the main board of paper feeder. Replace the engine controller PCB and check for correct operation.

• Code: C1040
• Description: Overcurrent detection of drawer 4 base motor • Excessive current has flowed through the fourth drawer base motor which elevates the bottom plate in the drawer. • Lift-up does not finish even after 8 seconds. • Detection occurs twice continuously after the drawer 4 is removed and then inserted.
• Causes: Defective lower drawer base motor. Defective bottom plate elevation mechanism of fourth drawer. Defective main board of paper feeder. Defective engine controller PCB.
• Remedy: Replace the lower drawer base motor. Check whether there is an object that prevents the bottom plate of drawer 4 from operating normally. Replace the main board of paper feeder. Replace the engine controller PCB and check for correct operation.

• Code: C1210
• Description: Side registration home position sensor detection error • The side registration home position sensor does not detect home position of side registration guides. • Detection occurs twice continuously after the duplex unit is removed and then inserted.
• Causes: Defective side registration home position sensor. Defective side registration motor. Defective engine controller PCB.
• Remedy: Replace the side registration home position sensor. Replace the side registration motor. Replace the engine controller PCB and check for correct operation.

• Code: C2000
• Description: Main drive motor lock • The frequency generation pulse which the main drive motor generates to CPU (U2) on the engine controller PCB in normal operation (after self-diagnostics codes 2010 and 2020 are cleared) is not at the correct frequency.
• Causes: Defective main drive motor. Excessive torque for driving drum unit or primary transfer unit. (Overloaded by a damaged gear.) Defective harness between engine controller PCB and main drive motor, or poor contact of the connector terminals. Defective engine controller PCB.
• Remedy: Replace the main drive motor. Check if the drum unit or primary transfer unit rotates smoothly. Check for broken gears. Replace if any. Check the continuity of the harness and the insertion of connectors. Replace the engine controller PCB and check for correct operation.