查了下Trendsetter VLF没有这个错误代码，而Magnus VLF有40729
Magnus VLF：40729
Error Message: MDH: Drum vacuum timeout: Failed to achieve vacuum threshold (<Threshold>) within <Timeout> ms (only reached <ActualValue>). [<I/O name>]
Service Information:
A timeout occurred while waiting for the drum vacuum to cross the threshold.
The vacuum level can be checked with the <<drum vac>> command. The threshold is set with the "mhauto DrumVacThresh" parameter. A command will eventually exist to help with threshold calibration.
It is possible to bypass the sensor temporarily with the <<scan>> command.
Cause: (原因)：
The drum vacuum sensor did not reach the expected threshold (转鼓真空传感器并没有达到预期的阈值)
Incorrect threshold value (阈值不正确)
Parameter:
Threshold - This is the threshold value that was not reached.
Timeout - This is the amount of time allowed to reach the threshold.
ActualValue - This is the actual value reached after the timeout.
I/O name - This is the standard firmware name of the sensor.