Remedy: Replace the PCU PWB EEPROM. Replace the PCU PWB. Check contact of the EEPROM socket. Put down the counter/adjustment values in the simulation to prevent against loss of the counter data and the adjustment values. Use SIM16 to cancel the trouble.
Code: U5-00
Description: Document feed unit communication error
Remedy: Turn OFF/ON the power. Check connection of the connector and the harness. Replace the SCU PWB. Replace the DSPF PWB.
Code: U5-16
Description: Document feed unit fan motor trouble
Causes: Fan motor trouble. Connection trouble of the connector and the harness.
Remedy: Use SIM2-3 to check the operation. Check the DSPF PWB and the driver PWB connection of the connector and the harness.
Code: U5-30
Description: Document feed unit tray lift up trouble
Causes: STUD does not turn ON 5 times continuously within the specified time. STUD/STLD sensor trouble. Connection trouble of the connector and the harness. DSPF PWB trouble.
Remedy: Replace the STUD/STLD sensor. Check connection of the connector and the harness. Replace the DSPF PWB.
Code: U5-31
Description: Document feed unit tray lift down trouble
Causes: STLD does not turn OFF within the specified time. STUD/STLD sensor trouble. Connection trouble of the connector and the harness. DSPF PWB trouble.
Remedy: Replace the STUD/STLD sensor. Check connection of the connector and the harness. Replace the STUD/STLD. Replace the DSPF PWB.
Code: U5-40
Description: Document feed unit installation trouble
Causes: When two or more document feed units are detected. Connection trouble of the connector and the harness. Document feeder trouble.
Remedy: Check connection of the connector and the harness.