ACU/ACRE expansion ROM error 
Incompatible DSK Boot and program 
firmware version 
UI data & CPU firmware inconsistency. 
Firmware & EEPROM conflict (MFP) 
Firmware & EEPROM conflict (PCU) 
Firmware & EEPROM conflict (SCU) 
Main charger trouble (Monochrome) 
Main charger trouble (Colour) 
PTC trouble (TC high voltage) 
Primary transfer output trouble 
Network communication error 
Network card is not installed or defective 
FTP or Mail server is not found 
Specified server does not correspond 
during transmission 
Invalid account/password (FTP server) 
Invalid directory entered (FTP server) 
Specified mail server (POP3) is not found 
Invalid server account or password 
The specified mail server (POP3) suspends 
response 
Shading error (Black correction) 
Shading error (White correction) 
HDD trouble when the mirroring kit is 
installed. 
Shading trouble (Black correction). 
Shading trouble (White correction). 
CCD-ASIC communication error. 
LSU laser detection error (K). 
LSU laser detection error (C). 
LSU laser detection error (M). 
LSU laser detection error (Y). 
LSU-PCU connection trouble 
LSU-ASIC frequency abnormality. 
Image data trouble (ACRE - ASIC) 
Image data decode error ( ACRE) 
MFP & ACRE firmware inconsistency 
Scanner expansion PWB (ACRE) memory 
error 
Firmware & PWB combination error 
MFP combination error (Firmware/PWB) 
MFP-PCU combination error 
MFP-SCU communication trouble. 
MFP-PCU communication trouble. 
Fax reception image data error 
Image data process error. 
Image data process error (import data) 
MFP PWB DIMM memory check error. 
LSU LD PWB EEPROM R/W error (K) 
LSU LD PWB EEPROM R/W error (C) 
LSU LD PWB EEPROM R/W error (M) 
LSU LD PWB EEPROM R/W error (Y) 
Mirror kit HDD installation error 
Compact Flash memory trouble 
Auto DV adjustment trouble. 
Auto DV adjustment trouble (over toned). 
Auto DV adjustment trouble (under toned). 
Finisher-PCU PWB communication error. 
Finisher exit roller lifting operation trouble