• Code: 7914
• Description: Developer unit EEPROM error (Yellow) No response is issued from the device in reading/ writing for 5 ms or more and this problem is repeated 5 times successively. Mismatch of reading data from two locations occurs 8 times successively. Mismatch between writing data and reading data occurs 8 times successively.
• Remedy: Developer unit 1. Unplug the power cord from the wall outlet, and wait five seconds. Then plug in the power cord and then turn on the power switch. 2. Confirm that the connector of the developer unit is firmly connected, and if necessary, push the unit all the way in. 3. Confirm that the wiring connector is firmly connected, and if necessary, connect the connector all the way in. Developer unit - Drum/Developer relay PWB Drum/Developer relay PWB - Engine PWB(YC6) 4. If the wire is disconnected, short-circuited or has a ground fault, or the connector pin is deformed, replace the wire. 5. Replace the developer unit.
  Drum/developer relay PWB Replace the drum/developer relay PWB
  Engine PWB 1. Check the engine firmware and upgrade to the latest version if necessary. 2. Replace the engine PWB.

• Code: 8000
• Description: Finisher incompatible detection error Improper adaptation of the main unit and finisher is detected. (30 ppm model only)
• Remedy: Finisher Check if the Finisher of a different model is mounted, and replace it with the correct one.

• Code: 8010
• Description: Punch motor error 1 The punch home position sensor is not turned on when passing 200ms during the punch motor drive. (35/40 ppm model only)
• Remedy: Punch motor 1. Execute [Motor] > [Punch] in U240 Checking the operation of the finisher. 2. Check if the punch unit can be moved manually without being caught. 3. Check if the motor drive is delivered to the punch cam. 4. Confirm that the wiring connector is firmly connected, and if necessary, connect the connector all the way in. Punch motor - Punch PWB (YC4) 5. If the wiring is disconnected, short-circuited or has a ground fault, replace the wire. 6. Replace the punch motor.
  Punch home position sensor 1. Execute [Punch] > [Punch HP] in U241 Checking the operation of the finisher switch. 2. Check if there is a failure in the position of the sensor or mounting plate. 3. Confirm that the wiring connector is firmly connected, and if necessary, connect the connector all the way in. Punch home position sensor - Punch PWB (YC8) 4. Replace the punch home position sensor.
  Punch PWB 1. Confirm that the wiring connector is firmly connected, and if necessary, connect the connector all the way in. Punch PWB - DF main PWB (YC7) 2. Replace the punch PWB.
  DF main PWB Replace the DF main PWB.

• Code: 8020
• Description: Punch motor error 2 In case the home position cannot be in position for 3 s or less when initializing or waiting for the home position. (35/40 ppm model only)
• Remedy: Punch motor 1. Execute [Motor] > [Punch] in U240 Checking the operation of the finisher. 2. Check if the punch unit can be moved manually without being caught. 3. Check if the motor drive is delivered to the punch cam. 4. Confirm that the wiring connector is firmly connected, and if necessary, connect the connector all the way in. Punch motor - Punch PWB (YC4) 5. If the wiring is disconnected, short-circuited or has a ground fault, replace the wire. 6. Replace the punch motor.
  Punch unit PWB 1. Confirm that the wiring connector is firmly connected, and if necessary, connect the connector all the way in. Punch PWB - DF main PWB (YC7) 2. Replace the punch PWB.
  DF main PWB Replace the DF main PWB.

• Code: 8030
• Description: Punch motor error 3 In case the home position ON state does not turn OFF within 50ms during operation. (35/40 ppm model only)
• Remedy: Punch motor 1. Execute [Motor] > [Punch] in U240 Checking the operation of the finisher. 2. Check if the punch unit can be moved manually without being caught. 3. Check if the motor drive is delivered to the punch cam. 4. Confirm that the wiring connector is firmly connected, and if necessary, connect the connector all the way in. Punch motor - Punch PWB (YC4) 5. If the wiring is disconnected, short-circuited or has a ground fault, replace the wire. 6. Replace the punch motor.
  Punch unit PWB 1. Confirm that the wiring connector is firmly connected, and if necessary, connect the connector all the way in. Punch PWB - DF main PWB (YC7) 2. Replace the punch PWB.
  DF main PWB Replace the DF main PWB.

• Code: 8090
• Description: DF paddle motor error In case the DF paddle sensor does not detect ON/ OFF when 1s passes while the DF paddle motor drives.
• Remedy: DF paddle motor error 1. Execute [Motor] > [Beat] in U240 Checking the operation of the finisher. 2. Check if the paddle is rotating. 3. Check if the motor drive is delivered to the paddle. 4. Confirm that the wiring connector is firmly connected, and if necessary, connect the connector all the way in. DF paddle motor - DF main PWB(YC9) 5. If the wiring is disconnected, short-circuited or has a ground fault, replace the wire. 6. Replace the DF paddle motor.
  DF paddle sensor 1. Execute [Finisher]>[Bundle Eject HP] in U241 Checking the operation of the finisher switch. 2. Check if there is a failure in the position of the sensor or mounting plate. 3. Confirm that the wiring connector is firmly connected, and if necessary, connect the connector all the way in. DF paddle sensor - DF main PWB(YC19) 4. Replace the DF paddle sensor.
  DF main PWB Replace the DF main PWB.

• Code: 8100
• Description: DF eject release motor error The DF bundle eject sensor does not detect ON/ OFF when 1s passes while the DF eject release motor drives.
• Remedy: DF eject release motor 1. Execute [Motor] > [Eject Unlock (Full)] in U240 Checking the operation of the finisher. 2. Check if the eject guide of the finisher tray is open and otherwise, correct it. 3. Check if the motor drive is delivered to the eject guide. 4. Confirm that the wiring connector is firmly connected, and if necessary, connect the connector all the way in. DF eject release motor - DF main PWB(YC8) 5. If the wiring is disconnected, short-circuited or has a ground fault, replace the wire. 6. Replace the DF eject release motor.
  DF bundle eject sensor 1. Execute [Finisher]>[Bundle Eject HP] in U241 Checking the operation of the finisher switch. 2. Check if there is a failure in the position of the sensor or mounting plate. 3. Confirm that the wiring connector is firmly connected, and if necessary, connect the connector all the way in. DF bundle eject sensor - DF main PWB(YC19) 4. Replace the DF bundled paper eject sensor.
  DF main PWB Replace the DF main PWB.

• Code: 8140
• Description: DF tray error 1 In case unable to detect the DF tray sensor 1 or DF tray upper level sensor is turned ON when the main tray ascends and 30 s have passed.
• Remedy: DF tray motor 1. Execute [Motor] > [Tray] in U240 Checking the operation of the finisher. 2. Check if the main tray can be moved up and down manually without getting caught. 3. Check if the motor drive is delivered to the main tray. 4. Confirm that the wiring connector is firmly connected, and if necessary, connect the connector all the way in. DF tray motor - DF main PWB(YC12) 5. If the wiring is disconnected, short-circuited or has a ground fault, replace the wire. 6. Replace the DF tray motor.
  DF tray sensor 1 DF tray upper surface sensor 1. Execute [Finisher]>[Tray U-Limit, Tray Top] in U241 Checking the operation of the finisher switch. 2. Check if there is a failure in the position of the sensor or mounting plate. 3. Confirm that the wiring connector is firmly connected, and if necessary, connect the connector all the way in. DF tray sensor 1 - DF main PWB(YC19) DF tray upper surface sensor - DF main PWB(YC15) 4. Replace the DF tray sensor 1 or DF tray upper surface sensor.
  DF main PWB Replace the DF main PWB.