Final answer:
New service videos on LenovoServiceTraining.com are updated based on new product releases, updates, changes in service policies, and technical issues.
Step-by-step explanation:
New service videos are added to LenovoServiceTraining.com based on various factors such as the release of new Lenovo products, updates to existing products, changes in service policies, or the need for additional training material on technical issues identified by Lenovo's service team or customer feedback.
The website aims to keep service professionals updated with the latest information and techniques for servicing Lenovo's products.
However, for the most accurate and current information about the criteria for adding new service videos to LenovoServiceTraining.com, it's advisable to visit the website directly or contact Lenovo's support or training department for the latest updates and insights.