• Code: L8-10
• Description: Power abnormality detection trouble
  The power status monitoring signal keeps power OFF state after passing the specified time (2sec).
• Causes: Circuit around the power status monitoring signal (PSSTS) failure.
• Remedy: Check whether power status monitoring signal (PSSTS) on MCU PWB is OPEN or not. Replace MCU PWB.

• Code: PF-00
• Description: PF trouble
  The copy inhibit command from RIC is received.
• Causes: Judged by the host.
• Remedy: Inform to the host.

• Code: U1-01
• Description: FAX battery error
  The SRAM backup battery voltage on FAX control PWB falls.
• Causes: The SRAM backup battery voltage on FAX control PWB falls.
• Remedy: Check voltage of the SRAM back up battery. Replace the battery.

• Code: U1-02
• Description: PANEL LOW battery error
  The voltage of the panel clock function battery falls.
• Causes: The voltage of the panel clock function battery falls.
• Remedy: Check voltage of panel clock function battery. Replace the battery.

• Code: U2-04
• Description: EEPROM communication error
  EEPROM communication error
• Causes: EEPROM defect. ICU PWB EEPROM access circuit failure.
• Remedy: Check that the EEPROM is properly set. Clear trouble with SIM 16. Replace the MCU PWB.

• Code: U2-20
• Description: Machine speed code data error
  The machine boot speed information is not identical to the model code speed information
• Causes: EEPROM defect. SIM operation error.
• Remedy: Check for matching of the machine and model information setting in SIM26-57.

• Code: U7-00
• Description: RIC communication trouble
  Error in communication with RIC. Error in communication test after turning on the power or canceling SIM.
• Causes: Connector harness contact trouble or disconnection. RIC control PWB trouble. MCU PWB failure. Malfunction by noises.
• Remedy: Check the communication cable, connectors from the RIC box to the main body.

• Code: U9-00
• Description: Operation control PWB communication trouble
  Communication trouble between MCU and the operation control PWB
• Causes: Operation control PWB connector disconnection Harness failure of the operation control PWB and the MCU PWB
• Remedy: Check the connectors and the harness of the operation control PWB and MCU PWB. Check the grounding of the copier. Check ROM on the operation control PWB.