Compaq ML350 Compaq ProLiant ML350 Generation 2 Server Maintenance and Service - Page 68

Connectors, Switches and LEDs Table 4-5: Power Button, System Status LEDs, and Unit Identification Button continued Item Description Status Description Red System critical; system on or off with auxiliary power 6 Unit N/A Identification (UID) button Allows the user to activate or deactivate unit identification. Pushing the button activates unit identification, shown by the blue UID LED, so that the onsite administrator can identify a particular server. 7 Unit Off Identification (UID) LED Identification off Blue Identification on Flashing blue Remote console activity CAUTION: When the power LED is green, it is unsafe to remove AC power from the system. System Board LEDs Figure 4-6 and Table 4-6 illustrate and describe LEDs on the system board of the server that indicate when a processor, Processor Power Module (PPM), memory module, or fan has experienced a failure. System board LEDs also indicate when the Server Feature Board is not properly seated or when a thermal threshold has been exceeded. 11 1 10 2 9 8 3 7 6 5 4 Figure 4-6: System board LEDs Compaq ProLiant ML350 Generation 2 Server Maintenance and Service Guide 4-11 COMPAQ CONFIDENTIAL Codename: Forge Part Number: 236634-002 Last Saved On: 5/14/02 12:07 PM