Fuser high temperature (TH_UM).
Fuser high temperature (TH_US).
Fuser low temperature (TH_UM).
Fuser low temperature (TH_US).
5 continuous (POSD not reached) jams
Power source cooling fan trouble
Fusing cooling fan trouble
Paper exit cooling fan 2 trouble
Polygon motor trouble (LSU)
Full wave signal width abnormality
Power controller communication trouble
Personal counter not installed
MFP EEPROM read/write error
SD/MFP PWB SRAM data discrepancy
SRAM user authentication index check
sum error
MFP PWB EEPROM check sum error.
SRAM memory check sum error
Individual data check sum error of SRAM
memory (ICU)
MFP PWB SRAM memory user
authentication counter check sum error
Serial number discrepancy (MFP – PCU)
HDD system storage data area error
Machine adjustment (system storage data
area) error
HDD user authentication data check sum
error
SCU PWB EEPROM read/write error.
SCU PWB EEPROM check sum error.
PCU PWB EEPROM read/write error.
PCU PWB EEPROM check sum error
Communication trouble between main
unit and vendor control