• Code: F2-22
• Description: Machine tray 2 lift-up trouble
  MCLUD does not turn ON in the specified time.
• Causes: MCLUD trouble No. 2 tray lift-up motor trouble Harness disconnection f the PCU PWB, the lift-up unit, and the paper feed unit.
• Remedy: Check MCLUD, and their harness and connectors. Check the lift-up unit.

• Code: F2-39
• Description: Process thermistor trouble
  Output value abnormality of the temperature sensor of temperature/ humidity sensor
• Causes: Temperature/humidity sensor abnormality Temperature/humidity sensor harness connection failure PCU PWB trouble
• Remedy: Check connection of the harness and the connector of the temperature/ humidity sensor. Replace the temperature/humidity sensor. Check PCU PWB.

• Code: F2-58
• Description: Process humidity sensor breakdown
  Process humidity sensor open or short
• Causes: Temperature/humidity sensor harness connection failure Temperature/humidity sensor abnormality PCU PWB trouble
• Remedy: Check connection of the harness and the connector of the temperature/ humidity sensor. Replace the temperature/humidity sensor. Check PCU PWB.

• Code: F6-00
• Description: Communication trouble (ICU detection) between ICU and FAX
  Communication establishment error/ Fleming/Parity/Protocol errorFAX expansion flash memory abnormality (ICU detection)
• Causes: Slave unit PWB connector disconnection Harness abnormality between slave unit PWB and ICU PWB. Slave unit PWB mother board connector pin breakage Slave unit ROM abnormality/No ROM/ Reverse insertion of ROM/ROM pin breakable
• Remedy: Check connector harness between slave unit PWB and ICU PWB. Check grounding of machine. Check slave unit PWB ROM.

• Code: F6-01
• Description: FAX expansion flash memory abnormality (ICU detection)
  Flash memory cannot be deleted.
• Causes: Flash memory cannot be deleted.
• Remedy: Check the FAX image storage Flash memory. Use SIM 66-10 to clear the flash memory.

• Code: F6-04
• Description: FAX modem operation abnormality
  FAX PWB modem chip operation abnormality
• Causes: Modem chip operation abnormality in FAX PWB
• Remedy: Replace FAX PWB.

• Code: F6-20
• Description: FAX write protect cancel
  The write protect JP is released.
• Causes: The write protect JP is set to “write allow. FAX interface PWB trouble FAX PWB trouble
• Remedy: Check the write protect JP. Replace the FAX PWB. Replace the FAX interface PWB.

• Code: F6-21
• Description: Combination abnormality of the TEL/ LIU PWB and the FAX soft switch
  Combination abnormality of the TEL/ LIU PWB and the FAX PWB information (soft switch) Or the TEL/LIU PWB is not a new one for new MDMC PWB.
• Causes: The destination of the installed TEL/LIU PWB differs. The FAX PWB information (soft switch) differs. TEL/LIU PWB trouble
• Remedy: Check the destination of the TEL/LIU PWB. Check the FAX PWB information (soft switch). Replace the TEL/LIU PWB.