IBM 86645RY Hardware Maintenance Manual - Page 22

14 Netfinity Server HMM Table 1 (Page 1 of 5). Light path diagnostics System Error LED (information LED panel) Lit diagnostics panel LED On A system error was detected. Check to see which of the LEDs on the diagnostics panel inside the server are on. None CPU Cause The system error log is 75% or more full or a PFA alert was logged. One of the microprocessors has failed or a microprocessor is installed in the wrong connector. VRM MEMORY One of the voltage regulator modules on the processor board has failed. A memory error occurred. Action Check the system error log and correct any problems. See "POST Error Log" on page 36 for information about clearing the error log. Disconnecting the server from all power sources for at least 20 seconds will turn off the System Error LED. 1. Check the Microprocessor Error LEDs on the processor board. 2. Turn off the server, reseat the microprocessor indicated by the lit Microprocessor Error LED, and restart the server. 3. If the problem persists, replace the microprocessor. 1. Check the VRM Error LEDs on the processor board. 2. Turn off the server, reseat the VRM indicated by the lit VRM Error LED, and restart the server. 3. If the problem persists, replace the VRM. 1. Check the DIMM Error LEDs on the memory board. 2. Replace the DIMM indicated by the lit DIMM Error LED.