Code :

Code: L4-44
Description: Power cooling fan 2 lock
Causes: When the power cooling fan 2 is operated, the fan operation signal is not detected within the specified time.
Remedy: Case 1 Cause Fan connector disconnection Check and remedy Check the harness and the connector between the PCU PWB and the fan. Case 2 Cause Fan does not rotate because of other trouble. Check and remedy Use SIM6-2 to check that the fan is actually rotating.

Code: L6-10
Description: Polygon motor lock detection
Causes: It is judged that the LSU polygon motor lock signal is not outputted, and the lock signal is checked after 15 sec from starting rotation of the polygon motor and it is judged that the polygon motor does not rotate properly.
Remedy: Case 1 Cause Disconnection of the LSU connector or the LSU inside harness, or breakage Check and remedy Check connection of the harness and the connector. Case 2 Cause Polygon motor trouble, LSU PWB trouble Check and remedy Use SIM61-1 to check the operation of the polygon motor. Replace the LSUcnt PWB. Replace the LSU.

Code: L8-01
Description: No full wave signal
Causes: No full wave signal is detected.
Remedy: Case 1 Cause Harness trouble Check and remedy Check connection of the harness and the connector. Case 2 Cause Power unit trouble Check and remedy Replace the power unit. Case 3 Cause PCU PWB trouble Check and remedy Replace the PCU PWB.

Code: L8-02
Description: Full wave signal width abnormality
Causes: The full wave signal is judged as frequency abnormality. (The detection frequency is judged as 65Hz or above or 45Hz or less.)
Remedy: Case 1 Cause Harness trouble Check and remedy Check the harness and the connector connection. Case 2 Cause Power unit trouble Check and remedy Replace the power unit. Case 3 Cause PCU PWB trouble Check and remedy Replace the PCU PWB.

Code: L8-20
Description: Power controller communication trouble
Causes: Communication establishment error/Framing/ Parity/Protocol error
Remedy: Case 1 Cause Connector connection trouble between the mother board PWB and the MFPcnt PWB. MFPcnt PWB mother board connector pin breakage Check and remedy Check the connector connection between the mother board PWB and the MFPcnt PWB. Check grounding of the machine. Case 2 Cause Mother PWB trouble Check and remedy Replace the mother PWB. Case 3 Cause Mother PWB jumper error Check and remedy Set the mother PWB jumper to the Default side.

Code: U2-00
Description: EEPROM read/write error (MFP detection)
Causes: EEPROM device read/write error
Remedy: Case 1 Cause EEPROM device trouble Check and remedy Replace the EEPROM device. Case 2 Cause EEPROM device contact failure Check and remedy Check that EEPROM device is properly inserted. Case 3 Cause Device access error due to electrical noises Check and remedy Replace the MFPcnt PWB.