The main purpose of Andon is to improve the flow of information in case of problems. All factories have problems that may delay or stop production (yes, even Toyota). So, in order to streamlined the issue raising and tracking process ANDON give the right solution to track the issue and improving the efficiency.

It works in two principles:

  1. Andon alerts the human that there is a problem
  2. The Andon allows the human to stop a process and prevent the defect from continuing down the line

Andon in Lean manufacturing is a system designed to alert operators and managers of problems in real time so that corrective measures can be taken immediately.

In lean manufacturing, Andon refers to any visual display that shows status information on the plant floor.