Description: Developer unit C 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 two locations occurs 8 times successively. Mismatch between writing data and reading data occurs 8 times successively.
Remedy: Developer unit C 1. Unplug the power cord from the wall outlet, and wait five seconds. Then plug 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 and Drum relay PWB (YC8) Drum relay PWB (YC1) and Main/Engine PWB (YC15) 4. If the wire is disconnected, short-circuited or has ground fault, or the connector pin is deformed, replace the wire. 5. Replace the developer unit. Drum relay PWB Replace the drum relay PWB. Main/Engine PWB 1. Check the engine firmware and upgrade to the latest version if necessary. 2. Replace the Main/Engine PWB.
Code: 7913
Description: Developer unit M EEPROM error (1)No response is issued from the device in reading/writing for 5 ms or more and this problem is repeated 5 times successively. (2)Mismatch of reading data from two locations occurs 8 times successively. (3)Mismatch between writing data and reading data occurs 8 times successively.
Remedy: Developer unit M 1. Unplug the power cord from the wall outlet, and wait five seconds. Then plug 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 and Drum relay PWB (YC3) Drum relay PWB (YC1) and Main/Engine PWB (YC15) 4. If the wire is disconnected, short-circuited or has ground fault, or the connector pin is deformed, replace the wire. 5. Replace the developer unit. Drum relay PWB Replace the drum relay PWB. Main/Engine PWB 1. Check the engine firmware and upgrade to the latest version if necessary. 2. Replace the Main/Engine PWB.
Code: 7914
Description: Developer unit Y 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 two locations occurs 8 times successively. Mismatch between writing data and reading data occurs 8 times successively.
Remedy: Developer unit Y 1. Unplug the power cord from the wall outlet, and wait five seconds. Then plug 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 and Drum relay PWB (YC9) Drum relay PWB (YC1) and Main/Engine PWB (YC15) 4. If the wire is disconnected, short-circuited or has ground fault, or the connector pin is deformed, replace the wire. 5. Replace the developer unit. Drum relay PWB Replace the drum relay PWB. Main/Engine PWB 1. Check the engine firmware and upgrade to the latest version if necessary. 2. Replace the Main/Engine PWB.
Code: 9180
Description: DP switchback motor error When the home position was not detected even if the processing was retried 3 consecutive times. Home position detection: When the home position is not detected by driving one rotation of the DP switchback motor.
Remedy: DP switchback motor 1. Unplug the power cord from the wall outlet, and wait five seconds. Then plug the power cord and then turn on the power switch. 2. Confirm that the connector of the switchback motor 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. DP switchback motor and DP main PWB (YC2) DP main PWB (YC1) and Main/Engine PWB (YC2) 4. If the wire is disconnected, short-circuited or has ground fault, or the connector pin is deformed, replace the wire. 5. Replace the DP switchback motor. DP switchback sensor 1. Rotate the switchback motor by hand to check that it is not unusually difficult to rotate. 2. Check that the DP switchback sensor is not disengaged and is correctly positioned. And check that the actuator correctly blocks the light. 3. Confirm that the wiring connector is firmly connected, and if necessary, connect the connector all the way in. DP switchback sensor and Main/Engine PWB (YC18) 4. If the wiring is disconnected, short-circuited or has ground fault, replace the wire. 5. DP switchback sensor (DPSBS) Main/Engine PWB 1. Check the engine firmware and upgrade to the latest version if necessary. 2. Replace the Main/Engine PWB.
Code: 9540
Description: Backup data error The machine may not be recovered or may have trouble in its function with changes of the internal data when replacing some the parts at the same time.
Remedy: PWBs Reattach the parts below in case of replacing 2 or more of them at the same time. Affected parts : Memory, PWBs * Do not replace two or more of the parts at the same time. * And, do not either execute the following works when replacing the above parts. Replace the drum unit or the developing unit. Replace the drum unit for the one color with another in the same machine.
Code: F000
Description: Communication error between Main/Engine PWB and Operation panel PWB
Remedy: Main/Engine PWB 1. Unplug the power cord from the wall outlet, and wait five seconds. Then plug the power cord and then turn on the power switch. 2. Check the wirings and connectors between the Main/Engine PWB and the operation panel PWB. Operation panel PWB and Main/Engine PWB (YC2002). 3. Replace the Main/Engine PWB. Operation panel PWB Replace the operation panel PWB.