• Code: 1810
• Description: Side multi tray communication error
  [45 ppm/55 ppm model] A communication error from side multi tray is detected 10 times in succession.
• Remedy: Side multi tray: Check the wiring connection status with the main unit and, if necessary, try connecting it again.
  SM main PWB: 1. Confirm that the wiring connector is firmly connected and, if necessary, connect the connector all the way in. SM main PWB (YC1) and Engine PWB (YC19) 2. If the wiring is disconnected, shorted or grounded, replace the wiring. 3. Replace the SM main PWB (Refer to the service manual for the paper feeder).
  Engine PWB: Check the engine software and upgrade to the latest, if necessary. Replace the engine PWB.
  SM main PWB: Replace the SM main PWB (Refer to the service manual for the paper feeder).

• Code: 1820
• Description: Side paper feeder communication error
  [45 ppm/55 ppm model] A communication error from paper feeder is detected 10 times in succession.
• Remedy: Side paper feeder: Check the wiring connection status with the main unit and, if necessary, try connecting it again.
  SM main PWB: 1. Confirm that the wiring connector is firmly connected and, if necessary, connect the connector all the way in. SM main PWB (YC1) and Engine PWB (YC19) 2. If the wiring is disconnected, shorted or grounded, replace the wiring. 3. Replace the SM main PWB (Refer to the service manual for the paper feeder).
  PF main PWB: 1. Confirm that the wiring connector is firmly connected and, if necessary, connect the connector all the way in. PF main PWB (YC13) and SM main PWB (YC4) 2. If the wiring is disconnected, shorted or grounded, replace the wiring. 3. Replace the PF main PWB (Refer to the service manual for the paper feeder).
  Engine PWB: 1. Check the engine software and upgrade to the latest, if necessary. 2. Replace the engine PWB.

• Code: 1900
• Description: Paper feeder EEPROM error
  When writing the data, read and write data does not match 3 times in succession.
• Remedy: PF main PWB (EEPROM): 1. Confirm that the wiring connector is firmly connected and, if necessary, connect the connector all the way in. 2. Replace the PF main PWB (Refer to the service manual for the paper feeder).

• Code: 1910
• Description: Side multi tray EEPROM error
  [45 ppm/55 ppm model] When writing the data, read and write data does not match 3 times in succession.
• Remedy: SM main PWB (EEPROM): 1. Confirm that the wiring connector is firmly connected and, if necessary, connect the connector all the way in. 2. Replace the SM main PWB (Refer to the service manual for the paper feeder).

• Code: 1920
• Description: Side paper feeder EEPROM error
  [45 ppm/55 ppm model] When writing the data, read and write data does not match 3 times in succession.
• Remedy: PF main PWB: 1. Confirm that the wiring connector is firmly connected and, if necessary, connect the connector all the way in. 2. Replace the PF main PWB (Refer to the service manual for the paper feeder).

• Code: 1950
• Description: Intermediate transfer belt unit EEPROM error
  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 2 locations occurs 8 times successively. Mismatch between writing data and reading data occurs 8 times successively.
• Remedy: Transfer belt sensor: 1. Confirm that the wiring connector is firmly connected and, if necessary, connect the connector all the way in. Engine PWB (YC27) and RFID PWB (4P connector) (Check wirings on the RFID side since the signal line for the intermediate transfer belt sensor EEPROM on the engine PWB and the signal line for the toner container RFID are the same.) Intermediate transfer belt unit and Engine PWB (YC3) 2. If the wiring is disconnected, shorted or grounded, replace the wiring. 3. Replace the Intermediate transfer belt unit.

• Code: 2101
• Description: Developer motor K error
  After developer motor K is driven, the ready signal does not turn to L within 5 s. After developer motor K is stabilized, the ready signal is at the H level for 5 s continuously.
• Remedy: Developer unit K: 1. Check that the developer waste lock has been released and, if not, release the lock . 2. Check that the gears and spiral screw of the developer unit are not damaged. 3. Confirm that the developer roller can rotate. 4. If it won't rotate, replace the developer unit.
  Developer motor K: 1. To check the motor operation, execute DLP(K) by U030 . 2. Check the drive gear can rotate or they are not unusually loaded and, if necessary, replace. 3. Confirm that the wiring connector is firmly connected and, if necessary, connect the connector all the way in. Developer motor K and Motor control PWB (YC7) Motor control PWB (YC3) and Engine PWB (YC9) 4. If the wiring is disconnected, shorted or grounded, replace the wiring. 5. Replace the Developer motor K.
  Motor control PWB: Replace the Motor control PWB
  Engine PWB: 1. Check the engine software and upgrade to the latest, if necessary. 2. Replace the engine PWB.

• Code: 2103
• Description: Developer motor MCY error
  After developer motor MCY is driven, the ready signal does not turn to L within 5 s. After developer motor MCY is stabilized, the ready signal is at the H level for 5 s continuously.
• Remedy: Developer unit MCY: 1. Check that the developer waste lock has been released and, if not, release the lock . 2. Check that the gears and spiral screw of the developer unit are not damaged. 3. Confirm that the developer roller can rotate. 4. If it won't rotate, replace the developer unit.
  Developer motor MCY: 1. To check the motor operation, execute DLP(MCY) by U030 . 2. Check the drive gear can rotate or they are not unusually loaded and, if necessary, replace. 3. Confirm that the wiring connector is firmly connected and, if necessary, connect the connector all the way in. Developer motor MCY and Motor control PWB (YC7) Motor control PWB (YC3) and Engine PWB (YC9) 4. If the wiring is disconnected, shorted or grounded, replace the wiring. 5. Replace the Developer motor MCY.
  Motor control PWB: Replace the Motor control PWB.
  Engine PWB: 1. Check the engine software and upgrade to the latest, if necessary. 2. Replace the engine PWB.