• Code: C2810
• Description: Waste toner motor error
• Causes: The lock detection signal reaches the L level while the waste toner motor is driving (3 retries of successive 0.5s per 2ms).2. The lock detection signal does not reach L level within 50ms since the REM signal switched from L to H (3 retry per 500ms).
• Remedy: 1 Checking the waste toner box The waste toner box is not properly installed. Reinstall the waste toner box. Waste Toner Box Replacement 2 Checking the waste toner motor The waste toner motor does not operate properly. Execute U030 [Toner Recovery] to check if the excessive load is not applied to the waste toner motor. Then, repair the part if necessary. U030 Execution 3 Checking the drive gear The drive gear does not rotate properly. Check if the excessive load is not applied to the drive gears by rotating the gears, and clean the drive gears and the bushing, etc. 4 Replacing the waste toner box The waste toner box is faulty. Replace the waste toner box. Waste Toner Box Replacement 5 Checking the waste toner motor The waste toner motor is not properly connected. Reinsert the connector into the waste toner motor. 6 Checking the wire The wire is not properly connected. Reinsert the following wire connectors, and replace the wire when it has no continuity.• Waste toner motor - Engine PWB Electrical Diagram of PWBs 7 Firmware upgrade The engine firmware is faulty. Upgrade the engine firmware to the latest version Firmware Upgrade 8 Replacing the engine PWB The engine PWB is faulty. Replace the engine PWB. Engine PWB Replacement

• Code: C2840
• Description: Belt cleaning motor error
• Causes: 1. The motor FG pulse of is not input for 2s continuously during the motor operation.2. The FG pulse exceeding 4000rpm was detected 10 times continuously.3. The motor speed was out of the target speed (+/- 6.25%), and the condition was continued for 2s.
• Remedy: 1 Checking the primary transfer unit The primary transfer unit is not properly installed. Reinstall the primary transfer unit. Primary Transfer Unit Replacement 2 Cleaning the primary transfer cleaning section The roller in the primary transfer cleaning section does not rotate properly. Remove the waste toner remaining in the primary transfer cleaning section. 3 Checking the wire The wire is not properly connected. Reinsert the following wire connectors, and replace the wires when they have no continuity.• Belt cleaning motor - Transfer PWB• Transfer PWB - Transfer connection PWB• Transfer connection PWB - Feed image PWB Electrical Diagram of PWBs 4 Checking the wire The wire is not properly connected. Reconnect the wire connectors between the feed image PWB and the engine PWB. If the wires are pinched or it have any damage, fix or replace them. Electrical Diagram of PWBs 5 Checking the belt cleaning motor The belt cleaning motor is not properly attached, or it is faulty. Reattach or replace the belt cleaning motor. 6 Primary transfer unit replacement The cleaning drive section in the primary transfer unit is faulty. Replace the primary transfer unit. Primary Transfer Unit Replacement 7 Replacing the feed image PWB The feed image PWB is faulty. Replace the feed image PWB. 8 Firmware upgrade The engine firmware is faulty. Upgrade the engine firmware to the latest version Firmware Upgrade 9 Replacing the engine PWB The engine PWB is faulty. Replace the engine PWB. Engine PWB Replacement

• Code: C3100
• Description: Carriage error
• Causes: The position of the home position sensor (turning on / off) mismatches when turning the main power on or finishing the original scan by the scanner.
• Remedy: 1 Unlocking the primary mirror unit The primary mirror unit is not unlocked. Unlock the primary mirror unit. Unlocking Primary Mirror Unit 2 Checking the scanner movement A load is applied to the scanner movement. Check the mirror unit operation by executing U073 or shifting it manually. If it has the excessive load, check if there is the foreign objects are on the scanner wires or the wire drums, and clean them. After that, apply the grease to the scanner rails. Optical Wires Replacement 3 Checking the scanner wires The scanner wires are dirty or come off. Clean and reattach the scanner wires. Optical Wires Replacement 4 Checking the scanner motor The scanner motor is faulty. Reattach the scanner motor and reconnect the wire. Replace it if it is not fixed. 5 Checking the belt tension of the scanner motor A load is applied to the scanner movement since the belt tension is improper. Adjust the scanner motor belt tension properly. 6 Checking the wire The wire is not properly connected or is faulty. Reinsert the following wire connectors, and replace the wire if there is no continuity.• Scanner motor - Engine PWB Electrical Diagram of PWBs 7 Checking the home position sensor The home position sensor is not properly attached. Reattach the home position sensor. 8 Checking the wire The wire is not properly connected or is faulty. Reinsert the following wire connectors, and replace the wire if there is no continuity.• Home position motor - Engine PWB Electrical Diagram of PWBs 9 Checking the home position sensor The home position sensor is faulty. Replace the home position sensor. 10 Firmware upgrade The firmware is faulty. Upgrade the engine firmware to the latest version Firmware Upgrade 11 Checking the engine PWB The engine PWB is faulty. Reconnect the connectors on the engine PWB. Then, fix or replace the wires if they are pinched by the other part or if they have any damage. When the issue is not resolved after that, replace the engine PWB. Engine PWB Replacement

• Code: C3200
• Description: LED lamp startup error
• Causes: The white reference data acquired by lighting the lamp at the initial operation is at the specified value or less. (Over 2 LED lamps do not light.)
• Remedy: 1 Checking the LED lamp The LED lamp does not light. Check if the LED lamp lights by executing U061 [CCD]. If it does not light, replace the lamp unit and execute U411 [Table(ChartA)]. Lamp Unit Replacement 2 Checking the FFC The FFC is not properly connected, or it is faulty. Reconnect the following FFC. When the FFC terminals are peeled off or deformed or the FFC is broken, replace the FFC.• CCD PWB - Engine PWB• LED PWB - CCD PWB Electrical Diagram of PWBs 3 Replacing the ISU The CCD PWB is faulty. Replace the ISU and then execute U411. ISU Replacement 4 Firmware upgrade The firmware is faulty. Upgrade the engine firmware to the latest version Firmware Upgrade 5 Checking the engine PWB The engine PWB is faulty. Reconnect the connectors on the engine PWB. Then, fix or replace the wires if they are pinched by the other part or if they have any damage. When the issue is not resolved after that, replace the engine PWB. Engine PWB Replacement

• Code: C3210
• Description: CIS lamp error Object: Dual scan DP
• Causes: The input data did not exceed threshold for 5s when lighting the CIS lamp.
• Remedy: 1 Releasing the partial operation The partial operation is executed. Execute resetting the partial operation at U906. U906 Execution 2 Checking the DPCIS The CIS lamp does not light. Check if the CIS lamp lights by executing U061 [CIS]. If it does not light, replace the DPCIS and execute U091 and U411. DP CIS Replacement 3 Cleaning the CIS glass and the CIS roller The CIS glass or the CIS roller is dirty. Clean the CIS glass and the CIS roller. 4 Checking the DPSHD PWB The DPSHD PWB is not properly connected. Reconnect the DPSHD PWB to the DPCIS. 5 Checking the wire The wire is not properly connected or is faulty. Reinsert the following wire connectors, and replace the wires when they have no continuity.• DPSHD PWB - DP main PWB• DP main PWB - Engine PWB Electrical Diagram of PWBs 6 Firmware upgrade The firmware is faulty. Upgrade the engine firmware to the latest version Firmware Upgrade 7 Replacing the DPSHD PWB The DPSHD PWB is faulty. Replace the DPSHD PWB. 8 Replacing the DP main PWB The DP main PWB is faulty. Replace the DP main PWB. DP Main PWB Replacement 9 Replacing the engine PWB The engine PWB is faulty. Replace the engine PWB. Engine PWB Replacement

• Code: C3300
• Description: CCD AGC error
• Causes: The brightness of the LED lamps is darker (1 LED lamp does not turn on) or brighter than anticipated when executing the AGC process for the CCD lamp.
• Remedy: 1 Checking the LED lamp The LED lamp is broken. Check if the LED lamp lights by executing U061 [CCD]. If it does not light, replace the lamp unit and execute U411 [Table(ChartA)]. Lamp Unit Replacement 2 Cleaning the backside of the contact glass The white reference sheet is dirty. Clean the white reference sheet at the backside of the contact glass. Contact Glass Detachment 3 Checking the FFC The FFC is not properly connected, or it is faulty. Reconnect the following FFC. When the FFC terminals are peeled off or deformed or the FFC is broken, replace the FFC.• LED PWB - CCD PWB• CCD PWB -Engine PWB Electrical Diagram of PWBs 4 Firmware upgrade The firmware is faulty. Upgrade the engine firmware to the latest version Firmware Upgrade 5 Replacing the ISU The CCD PWB is faulty. Replace the ISU and then execute U411. ISU Replacement 6 Replacing the engine PWB The engine PWB is faulty. Replace the engine PWB. Engine PWB Replacement

• Code: C3310
• Description: CIS AGC error Object: Dual scan DP
• Causes: The DPCIS could not acquire the correct white reference value while AGC process was executed.
• Remedy: 1 Releasing the partial operation The partial operation is executed. Execute resetting the partial operation at U906. U906 Execution 2 Cleaning the CIS glass and the CIS roller The CIS glass or the CIS roller is dirty. Clean the CIS glass and the CIS roller. 3 Firmware upgrade The firmware is faulty. Upgrade the engine firmware to the latest version Firmware Upgrade 4 Checking the DPSHD PWB The DPSHD PWB is not properly connected. Reconnect the DPSHD PWB to the DPCIS. 5 Replacing the DPSHD PWB The DPSHD PWB is faulty. Replace the DPSHD PWB. 6 Replacing the DPCIS The DPCIS is faulty. Replace the DPCIS, and then execute U091 and U411. DP CIS Replacement 7 Replacing the DP main PWB The DP main PWB is faulty. Replace the DP main PWB. DP Main PWB Replacement 8 Replacing the engine PWB The engine PWB is faulty. Replace the engine PWB. Engine PWB Replacement

• Code: C3500
• Description: Communication error between the scanner and the ASIC
• Causes: The communication error was detected during the communication between the scanner ASIC and the engine CPU.
• Remedy: 1 Replacing the engine PWB The engine PWB is faulty. Replace the engine PWB. Engine PWB Replacement