System diagnostics and indicator codes The following sections contain information about the chassis LEDs and indicator codes for the XC Core XC6515 system. Child TopicsSystem diagnostics and indicator codes The diagnostic indicators on the system front panel display system status during system startup. Status LED indicatorsSystem health and system ID indicator codesThe system health and system ID indicator is located on the left control panel of the system. iDRAC Direct LED indicator codesThe iDRAC Direct LED indicator lights up to indicate that the port is connected and is being used as a part of the iDRAC subsystem. LCD panelNIC indicator codesEach NIC on the back of the system has indicators that provide information about the activity and link status. The activity LED indicator indicates if data is flowing through the NIC, and the link LED indicator indicates the speed of the connected network. Power supply unit indicator codesAC power supply units (PSUs) have an illuminated translucent handle that serves as an indicator. The indicator shows if power is present or if a power fault has occurred. Drive indicator codesThe LEDs on the drive carrier indicates the state of each drive. Each drive carrier has two LEDs: an activity LED (green) and a status LED (bicolor, green/amber). The activity LED blinks whenever the drive is accessed. Using system diagnosticsf you experience an issue with the system, run the system diagnostics before contacting Dell for technical assistance. The purpose of running system diagnostics is to test the system hardware without using additional equipment or risking data loss. If you are unable to fix the issue yourself, service and support personnel can use the diagnostics results to help you solve the issue. System board diagnostic LED indicatorsThe system board LED indicators provide status of the system when it is powered on, which help identify POST and hardware issues. Enhanced Preboot System AssessmentIf you experience an issue with the system, run the system diagnostics before contacting Dell for technical support. The purpose of running system diagnostics is to test the system hardware without requiring more equipment or risking data loss. If you are unable to fix the issue yourself, service and support personnel can use the diagnostics results to help you solve the issue.