Description: Drum phase control sensor failure warning
Causes: OHT sensor failure warning
Remedy:
Code: E840-0000
Description: Pressure release mechanism failure
Causes: The target pressure position was not reached even when 3.5 seconds (approximately 1.5 rotation of the cam) elapsed after start of the fixing motor reverse rotation.
Remedy: • Check the gears and detection flags related to fixing pressure release mechanism. • Replace the fixing pressure release sensor (PS9). • Replace the fixing motor. • Replace the fixing assembly.