Description: The temperature of the print head driver has risen abnormally. The head driver chip temperature sensor in the COF detect abnormally high temperature.
Causes:
Remedy: Head property parameters incorrect in the EEPROM Enter the correct parameter values. Head/carriage unit broken Replace the head/carriage unit. Head flat cables and carriage-head flat cable not connected correctly Correct those flat cables. Head flat cables broken Replace the carriage PCB. Carriage-head flat cable broken Replace the head/carriage unit. Main PCB defective Replace the main PCB.
Code: 46
Description: The number of performed purge sequences has reached the limit.
Causes: Purge counter overflown
Remedy: Replace the ink absorber box and reset the purge counter to zero.
Code: 48
Description: Weak connection of the head flat cables.
Causes: Head flat cables or carriage-head flat cable broken or not connected
Remedy: Replace those cables or correct their connection.
Code: 49
Description: The head drive voltage has not risen to the specified level.
Causes:
Remedy: Head flat cables and carriage-head flat cable not connected correctly Correct those flat cables. Main PCB defective Replace the main PCB. Power supply PCB defective Replace the power supply PCB.
Code: 4F
Description: The head drive voltage has dropped from the high to low level in an abnormally short period.
Causes: Piezoelectric (PZT) ceramic actuator defective (Cracks or rare short)
Remedy:
Code: 50, 51
Description: The purge cam switch does not come ON or OFF even after the purge cam has been driven by the specified number of pulses.
Causes:
Remedy: Switching arm assembly not engaged correctly If the switching arm does not move smoothly, clean it. Ink cartridge/purge switch harness not connected correctly Correct the connection. Purge cam switch broken Replace the purge cam switch. Gear(s) on the maintenance unit broken Replace the maintenance unit. Paper feed motor broken Replace the paper feed motor. Main PCB defective. Replace the main PCB.