: The Motor Driver Board (MCU) is failing to send signals.
Damage or excessive wear to the drive assembly gears. Xerox Fault Code 043-343
Xerox fusers use halogen lamps or heat rollers. If one of these lamps burns out or develops a crack, the fuser cannot reach the target temperature. The machine initiates a safety timeout, after which code 043-343 appears. : The Motor Driver Board (MCU) is failing to send signals
However, given the complexity of modern printers and the precision required for mechanical repairs, you should not hesitate to call a certified Xerox technician if the advanced steps are beyond your comfort level. Prompt professional service is often the fastest and most reliable path to getting your high-volume printer back online. If one of these lamps burns out or
Inspect the drive gears on the back of each cartridge. Attempt to rotate the gears manually by hand. They should spin with mild resistance but should not be locked solid.
In Xerox technical terms, error codes are divided into chain and function codes.