If the CNC vertical lathe fails, the following are some common troubleshooting steps and treatment methods:

1. Check the alarm information: First, check whether there is an alarm information displayed on the control panel or screen of the CNC vertical lathe. Alarm information can provide clues and guidance about failures. According to the alarm information, the type and location of the fault can be located.
2. Check the power supply and electrical connection: Make sure that the power supply of the CNC vertical lathe is normal and well connected. Check components such as electrical connections, plugs, and circuit breakers to make sure they are not loose or damaged.
3. Check the mechanical parts: Check the mechanical parts of the CNC vertical lathe, including the spindle, turret, feed system, etc. Check for unusual noises, vibrations, or jamming. Make sure mechanical parts are well lubricated and free from unusual wear or damage.
4. Check sensors and detectors: CNC vertical lathes are usually equipped with multiple sensors and detectors for measuring and monitoring the status of various components. Check that these sensors and detectors are working properly. Clean sensors and detectors to make sure they are not covered or damaged by material or cutting debris.
5. Check the electrical system: Check the electrical system of the CNC vertical lathe, including servo drives, encoders, motors and other components. Make sure the electrical connections are correct and not loose or disconnected. Check that electrical equipment is working properly and there are no unusual current or voltage issues.
6. Restart and reset: If possible, try to restart or reset the CNC vertical lathe before making any repairs and adjustments. Sometimes, some failures may be caused by temporary system errors or overloads, and a restart or reset can solve the problem.
7. Seek professional support: If the above steps cannot solve the problem, or if you have no experience in repair and adjustment, it is recommended to seek professional support from CNC vertical lathe manufacturers or suppliers. Their technical team can provide more in-depth troubleshooting and solutions. They can be reached by phone, email or on-site repair.

It should be noted that maintenance and adjustment of CNC vertical lathes require certain professional knowledge and skills. If you are not sure how to proceed or if there is a safety hazard, always seek professional help to avoid further damage to the equipment or personal injury.