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## Locate a Faulty Express Module

The following LEDs are lit when an express module fault is detected:

- System Service Required LEDs on the front panel and rear I/O module

- System EM Fault LED on the front panel

- Service Required LED on the faulty express module

1. Determine if the System Service Required LEDs are lit on the front panel or the rear I/O module.

   See Interpreting Diagnostic LEDs.

2. Determine if the System EM Fault LED is lit on the front panel.

   See Front Panel System Controls and LEDs.

3. From the rear of the server, check the express module LEDs to identify which express module needs to be replaced.

   The amber Service Required LED will be lit on the express module that needs to be replaced.

4. Remove the faulty express module.

   See Remove an Express Module.

##### Related Information

- Express Module Configuration Reference

- Remove an Express Module

- Install an Express Module

- Verify Express Module Functionality

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