Controller Self-Diagnostics
D117/D118 5-28 SM
5.7 CONTROLLER SELF-DIAGNOSTICS
5.7.1 OVERVIEW
There are three types of self-diagnostics for the controller.
1. Power-on self-diagnostics: The machine automatically starts the self-diagnostics just after the
power has been turned on.
2. SC detection: The machine automatically detects SC conditions at power-on or during
operation.
The following shows the workflow of the power-on and detailed self-diagnostics.
 Diagnostics for uninstalled options will normally be skipped.