Compaq ProLiant ML350 Generation 2 Server Maintenance and Service Guide

Connectors, Switches and LEDs
4-8 Compaq ProLiant ML350 Generation 2 Server Maintenance and Service Guide
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LEDs
Several status LEDs and buttons are located on the front and back of the server. The LEDs
aid in problem diagnosis by communicating the status of the components and operations of
the server. LEDs are also located on the system board. The following server LEDs and
buttons are explained in this chapter:
• Power button
• System status LEDs (on the front of the server)
— Power On/Standby and AC power status
— Network interface controller (NIC) activity
— Internal health
— External health
— Unit Identification
• Unit identification (UID) button
• System board LEDs
— Processor failure
— Processor Power Module failure
— Memory failure
— Thermal failure
— Fan failure
— Server Feature Board seating failure
• Hot-plug hard drive LEDs
• Network interface controller LEDs (on the back of the server)
— Network activity status
— Network link
— Connection speed