What causes the angle iron punching‑cutting machine to fail to return to its home position?

According to the threading machine manufacturer, there are four reasons for the angle iron punching‑cutting machine failing to return to its home position:
Incorrect pipeline connection of the pneumatic‑hydraulic punching machine.
Insufficient input air source pressure.
Mechanical failure of the pneumatic‑hydraulic punching machine or malfunction of the solenoid valve.
Insufficient lifting force of the booster cylinder for the pneumatic‑hydraulic punching machine.
The above are the causes for the angle iron punching‑cutting machine failing to return to its home position provided by the threading machine manufacturer.