Description: LSU LD PWB EEPROM read/write error (K) Write error in the EEPROM write sequence
Causes: LD PWB EEPROM trouble. LSU mother PWB trouble. Connector/harness trouble between the LD PWB and the LSU mother PWB. Connector/harness trouble between the PCU PWB and the LSU mother PWB.
Remedy: Check the LSU, and replace if necessary. Check the LSU mother PWB, and replace if necessary. Check the connector/harness between the LD PWB and the LSU mother PWB, and replace if necessary. Check the connector/harness between the PCU PWB and the LSU mother PWB, and replace if necessary. Replace the LSU.
Code: E7-A1
Description: LSU LD PWB EEPROM read/write error (C) Write error in the EEPROM write sequence
Causes: LD PWB EEPROM trouble. LSU mother PWB trouble. Connector/harness trouble between the LD PWB and the LSU mother PWB. Connector/harness trouble between the PCU PWB and the LSU mother PWB.
Remedy: Check the LSU, and replace if necessary. Check the LSU mother PWB, and replace if necessary. Check the connector/harness between the LD PWB and the LSU mother PWB, and replace if necessary. Check the connector/harness between the PCU PWB and the LSU mother PWB, and replace if necessary. Replace the LSU.
Code: E7-A2
Description: LSU LD PWB EEPROM read/write error (M) Write error in the EEPROM write sequence
Causes: LD PWB EEPROM trouble. LSU mother PWB trouble. Connector/harness trouble between the LD PWB and the LSU mother PWB. Connector/harness trouble between the PCU PWB and the LSU mother PWB.
Remedy: Check the LSU, and replace if necessary. Check the LSU mother PWB, and replace if necessary. Check the connector/harness between the LD PWB and the LSU mother PWB, and replace if necessary. Check the connector/harness between the PCU PWB and the LSU mother PWB, and replace if necessary. Replace the LSU.
Code: E7-A3
Description: LSU LD PWB EEPROM read/write error (Y) Write error in the EEPROM write sequence
Causes: LD PWB EEPROM trouble. LSU mother PWB trouble. Connector/harness trouble between the LD PWB and the LSU mother PWB. Connector/harness trouble between the PCU PWB and the LSU mother PWB.
Remedy: Check the LSU, and replace if necessary. Check the LSU mother PWB, and replace if necessary. Check the connector/harness between the LD PWB and the LSU mother PWB, and replace if necessary. Check the connector/harness between the PCU PWB and the LSU mother PWB, and replace if necessary. Replace the LSU.
Code: E7-A5
Description: Installation error of HDD which was used in the mirroring kit When a HDD which was used in the mirroring kit is installed to the MFP without the mirroring kit, its operation is restricted in order to prevent against malfunction.
Causes: A HDD which was used in the mirroring kit is installed to the MFP without the mirroring kit.
Remedy: Replace the HDD with one which has not been used in the mirroring kit.
Code: EE-EC
Description: Automatic toner density adjustment error The sampling level in the automatic toner density adjustment is outside of 128
Causes: Toner density sensor trouble. Developing unit trouble. PCU PWB trouble.
Remedy: Replace the toner density sensor. Replace the developing unit. Replace the PCU PWB.