Description: Head parameters stored in the EEPROM are invalid. (This code may appear only in the maintenance mode.)
Remedy: • Print head unit • Driver PCB • Power supply PCB
Code: 48
Description: Weak connection of the head flat cables.
Remedy: • Main PCB • Print head unit
Code: 4D
Description: Error in the head drive voltage parameter stored in the EEPROM but not accessible at the user site. (This code may appear only in the maintenance mode.)
Remedy: •Main PCB • Driver PCB
Code: 4E
Description: Out of the allowable range of the head drive voltage designed for individual print head properties. (This code may appear only in the maintenance mode.)
Remedy: •Main PCB • Driver PCB • Print head unit
Code: 50
Description: The purge cam HP switch does not come ON even after the purge cam has been driven by the specified number of pulses.
Remedy: • Purge unit • Engine lower frame • Paper feed motor •Main PCB
Code: 51
Description: The purge cam HP switch does not go OFF even after the purge cam has been driven by the specified number of pulses.