• Code: C8100
• Description: DF eject release motor error
• Causes: 1. The DF paper stack eject switch does not turn on after passing 1s when driving the DF eject release motor.2. The DF paper stack eject switch does not turn off when driving the DF eject release motor for 1s.
• Remedy: 1 Checking the DF paper stack eject unit The eject guide in the DF paper stack eject unit is deformed. Correct the DF paper stack eject unit. 2 Checking the DF paper stack eject unit drive components The DF paper stack eject unit drive components are not properly attached, or they are faulty. Reattach the DF paper stack eject unit drive components. Then, replace them if they are not fixed. 3 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.• DF eject release motor - DF main PWB• DF paper stack eject switch - DF main PWB Electrical Diagram of PWBs 4 Replacing the DF eject release motor The DF eject release motor is faulty. Replace the DF eject release motor if it does not operate properly when checking the operation at U240. U240 Execution 5 Checking the DF paper stack eject switch The DF paper stack eject switch is not properly attached, or it is faulty. Reattach the DF paper stack eject switch and execute U241 to check the operation. If it does not properly operate, replace the switch. U241 Execution 6 Replacing the DF main PWB The DF main PWB is faulty. Replace the DF main PWB. DF Main PWB Replacement

• Code: C8110
• Description: DF shift motor 1 error Object: 4000-sheet finisher
• Causes: DF shift sensor 1 does not turn on even if shifting 160mm when driving DF shift motor 1.
• Remedy: 1 Checking the front shift guide The front shift guide is not assembled properly. If the front shift guide is not shifted manually, repair the part that restricts the operation. 2 Checking the front shift guide drive components The front shift guide drive components are not properly attached, or they are faulty. Reattach the front shift guide drive components. Then, replace them if they are not fixed. 3 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.• DF shift motor 1 - DF main PWB• DF shift sensor 1 - DF main PWB Electrical Diagram of PWBs 4 Replacing DF shift motor 1 DF shift motor 1 is faulty. Replace DF shift motor 1 if it does not operate properly when checking the operation at U240. U240 Execution 5 Checking DF shift sensor 1 DF shift sensor 1 is not properly attached, or it is faulty. Reattach DF shift sensor 1 and execute U241 to check the operation. If it does not properly operate, replace the sensor. U241 Execution 6 Replacing the DF main PWB The DF main PWB is faulty. Replace the DF main PWB. DF Main PWB Replacement

• Code: C8120
• Description: DF shift motor 2 error Object: 4000-sheet finisher
• Causes: DF shift sensor 2 does not turn on even if shifting 160mm when driving DF shift motor 2.
• Remedy: 1 Checking the rear shift guide The rear shift guide is not assembled properly. If the rear shift guide is not shifted manually, repair the part that restricts the operation. 2 Checking the rear shift guide drive components The rear shift guide drive components are not properly attached, or they are faulty. Reattach the rear shift guide drive components. Then, replace them if they are not fixed 3 Checking the wire The wire is not properly connected or is faulty. Reinsert the following wire connectors, and replace the wires if there is no continuity.• DF shift motor 2 - DF main PWB• DF shift sensor 2 - DF main PWB Electrical Diagram of PWBs 4 Checking DF shift motor 2 DF shift motor 2 is faulty. Replace DF shift motor 2 if it does not operate properly when checking the operation at U240. U240 Execution 5 Checking DF shift sensor 2 DF shift sensor 2 is not properly attached, or it is faulty. Reattach DF shift sensor 2. Then, execute U241 to check the operation. If it does not properly operate, replace the sensor. U241 Execution 6 Replacing the DF main PWB The DF main PWB is faulty. Replace the DF main PWB. DF Main PWB Replacement

• Code: C8130
• Description: DF shift release motor error Object: 4000-sheet finisher
• Causes: 1. The DF shift release sensor does not turn on for passing 1s when the DF shift release motor is driving.2. The DF shift release sensor does not turn on even if the DF shift release motor drives for 3s toward the direction where the home position is detected.3. The DF shift release sensor does not turn off even if it drives for 3s toward the direction where the home position is not detected.
• Remedy: 1 Checking the rear shift guide The rear shift guide is not assembled properly. If the rear shift guide is not shifted manually, repair the part that restricts the operation. 2 Checking the rear shift guide drive components The rear shift guide drive components are not properly attached, or they are faulty. Reattach the rear shift guide drive components. Then, replace them if they are not fixed. 3 Checking the wire The wire is not properly connected or is faulty. Reinsert the following wire connectors, and replace the wires if there is no continuity.• DF shift release motor - DF main PWB• DF shift release sensor - DF main PWB Electrical Diagram of PWBs 4 Checking the DF shift release motor The DF shift release motor is faulty. Replace the DF shift release motor if it does not operate properly when checking the operation at U240. U240 Execution 5 Checking the DF shift release sensor The DF shift release sensor is not properly attached, or it is faulty. Reattach the DF shift release sensor. Then, execute U241 to check the operation. If it does not operate properly, replace the sensor. U241 Execution 6 Replacing the DF main PWB The DF main PWB is faulty. Replace the DF main PWB. DF Main PWB Replacement

• Code: C8140
• Description: DF tray motor error 1 Object: 4000-sheet finisher or 1000-sheet finisher
• Causes: The DF tray sensor or the DF tray upper side sensor does not turn on after passing 30s when ascending the DF main tray or the DF tray.
• Remedy: 1 Checking the DF main tray / DF tray The DF main tray / DF tray is not assembled properly. If the DF main tray/DF tray is not shifted manually vertically, repair the part that restricts the operation. 2 Checking the DF main tray / DF tray drive components The DF main tray / DF tray drive components are not properly attached, or they are faulty. Reattach the DF main tray / DF tray drive components. Then, replace them if they are not fixed. 3 Checking the wire The wire is not properly connected or is faulty. Reinsert the following wire connectors, and replace the wires there is no continuity.• DF tray motor - DF main PWB• DF tray sensor 4 - DF main PWBOr, • DF tray sensor 5 (with the folding unit) - DF main PWB Electrical Diagram of PWBs 4 Replacing the DF tray motor The DF tray motor is faulty. Replace the DF tray motor if it does not operate properly when checking the operation at U240. U240 Execution 5 (When installing the 1000- sheet finisher) 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.• DF tray sensor 1 - DF main PWB• DF tray sensor 2 - DF main PWB Electrical Diagram of PWBs 6 (When installing the 4000- sheet finisher) 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.• DF tray sensor 1 - DF main PWB• DF tray sensor 2 - DF main PWB Electrical Diagram of PWBs 7 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.• DF tray upper side sensor 1 - DF main PWB• DF tray upper side sensor 2 - DF main PWB Electrical Diagram of PWBs 8 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.• DF tray upper side sensor 1 - DF main PWB• DF tray upper side sensor 2 - DF main PWB Electrical Diagram of PWBs 9 (When installing the 1000- sheet finisher) Checking DF tray sensor 1 DF tray sensor 1 is not properly attached, or it is faulty. Reattach DF tray sensor 1 and execute U241 to check the operation. If it does not properly operate, replace the sensor. U241 Execution 10 (When installing the 4000- sheet finisher) Checking DF tray sensor 1, 2 DF tray sensors 1, 2 are not properly attached, or they are faulty. Reattach DF tray sensors 1, 2 and execute U241 to check the operation.If they do not properly operate, replace the sensors. U241 Execution 11 Checking DF tray upper side sensors 1, 2 DF tray upper surface sensors 1, 2 are not properly attached, or they are faulty. Reattach DF tray upper surface sensors 1, 2 and execute U241 to check the operation.If they do not properly operate, replace the sensors. U241 Execution 12 Replacing the DF main PWB The DF main PWB is faulty. Replace the DF main PWB. DF Main PWB Replacement

• Code: C8140
• Description: DF tray motor error 1 Object: Inner finisher
• Causes: Turning on/off of DF paper holding sensors 1, 2 could not be detected after passing 4s when ascending the DF tray.
• Remedy: 1 Checking the DF tray The DF tray is not assembled properly. If the DF tray is not shifted manually vertically, repair the part that restricts the operation. 2 Checking the DF tray drive components The DF tray drive components are not properly attached, or they are faulty. Reattach the DF tray drive components. Replace them if they are not fixed. 3 Checking the wire The wire is not properly connected or is faulty. Reinsert the following wire connectors, and replace the wires there is no continuity.• DF tray motor - DF main PWB• DF tray sensor 4 - DF main PWBOr, • DF tray sensor 5 (with the folding unit) - DF main PWB Electrical Diagram of PWBs 4 Replacing the DF tray motor The DF tray motor is faulty. Replace the DF tray motor if it does not operate properly when checking the operation at U240. U240 Execution 5 Checking DF paper holding sensors 1, 2 DF paper holding sensors 1, 2 are not properly attached, or they are faulty. Reattach DF paper holding sensors 1, 2 and execute U241 to check the operation. If they do not properly operate, replace the sensors. U241 Execution 6 Replacing the DF main PWB The DF main PWB is faulty. Replace the DF main PWB. DF Main PWB Replacement

• Code: C8150
• Description: DF tray motor error 2 Object: 1000-sheet finisher
• Causes: Turning on and off of DF tray sensor 1 or DF tray upper side sensors 1, 2 could not be detected after passing 5s when descending the DF tray.
• Remedy: 1 Checking the DF tray The DF tray is not assembled properly. If the DF tray is not shifted manually vertically, repair the part that restricts the operation. 2 Checking the DF tray drive components The DF tray drive components are not properly attached, or they are faulty. Reattach the DF tray drive components. Replace them if they are not fixed. 3 Checking the wire The wire is not properly connected or is faulty. Reinsert the following wire connectors, and replace the wires there is no continuity.• DF tray motor - DF main PWB• DF tray sensor 4 - DF main PWBOr, • DF tray sensor 5 (with the folding unit) - DF main PWB Electrical Diagram of PWBs 4 Replacing the DF tray motor The DF tray motor is faulty. Replace the DF tray motor if it does not operate properly when checking the operation at U240. U240 Execution 5 Checking DF tray sensor 1 DF tray sensor 1 is not properly attached. Reattach DF tray sensor 1 and execute U241 to check the operation. If it does not properly operate, replace the sensor. U241 Execution 6 Checking DF tray upper side sensors 1, 2 DF tray upper side sensors 1, 2 are not properly attached. Reattach DF tray upper surface sensors 1, 2 and execute U241 to check the operation.If they do not properly operate, replace the sensors. U241 Execution 7 Replacing the DF main PWB The DF main PWB is faulty. Replace the DF main PWB. DF Main PWB Replacement

• Code: C8150
• Description: DF tray motor error 2 Object: 4000-sheet finisher
• Causes: Turning on and off of DF tray sensors 1, 2 or DF tray upper side sensors 1, 2 could not be detected after passing 5s when descending the DF main tray.
• Remedy: 1 Checking the DF main tray The DF main tray is not assembled properly. If the DF main tray is not shifted manually vertically, repair the part that restricts the operation. 2 Checking the DF main tray drive components The DF main tray drive components are not properly attached, or they are faulty. Reattach the DF main tray drive components. Then, replace them if they are not fixed. 3 Checking the wire The wire is not properly connected or is faulty. Reinsert the following wire connectors, and replace the wires there is no continuity.• DF tray motor - DF main PWB• DF tray sensor 4 - DF main PWBOr, • DF tray sensor 5 (with the folding unit) - DF main PWB Electrical Diagram of PWBs 4 Replacing the DF tray motor The DF tray motor is faulty. Replace the DF tray motor if it does not operate properly when checking the operation at U240. U240 Execution 5 Checking DF tray sensors 1, 2 DF tray sensors 1, 2 are not properly attached, or they are faulty. Reattach DF tray sensors 1, 2 and execute U241 to check the operation.If they do not properly operate, replace the sensors. U241 Execution 6 Checking DF tray upper side sensors 1, 2 DF tray upper surface sensors 1, 2 are not properly attached, or they are faulty. Reattach DF tray upper surface sensors 1, 2 and execute U241 to check the operation.If they do not properly operate, replace the sensors. U241 Execution 7 Replacing the DF main PWB The DF main PWB is faulty. Replace the DF main PWB. DF Main PWB Replacement