Verify Express Module Functionality
- Verify that the Fault LED is not lit on the express module.
- Verify that the System Service Required LEDs on the front panel and rear
I/O module are not lit.
See Interpreting Diagnostic LEDs.
- Verify that the System EM Fault LED on the front panel is not
See Front Panel System Controls and LEDs.
- Perform one of the following tasks based on your verification results:
If the previous steps did not clear the fault, see Diagnostics Process.
If the previous steps indicate that no faults have been detected, then the express module has been replaced successfully. No further action is required.