Lenovo ThinkSystem SR860 V2 - General Problem Determination Procedures

Table 31. System board LEDs descriptions and actions
LED
Descriptions and actions
1 System error LED (yellow) LED on: An error has occurred. Complete the following steps:
1. Check the identification LED and check log LED and follow the
instructions.
2. Check the Lenovo XClarity Controller event log and the system error log
for information about the error.
3. Save the log if necessary, and clear the log afterward.
2 Identification LED (blue) This LED is used as a presence detection LED. You can use Lenovo XClarity
Controller to light this LED remotely. Use this LED to locate the server among
other servers visually.
3 Light path power LED This LED indicates if there is sufficient power to lit the LEDs when light path
button is pressed while the system is not connected to the power.
4 XCC heartbeat LED (green) This LED indicates XCC heartbeat and boot process:
• LED blinking fast: XCC code is in the loading process.
• LED going off momentarily: XCC code has loaded completely.
• LED going off momentarily and then starts blinking slowing: XCC is fully
operational. You can now press the power-control button to power on the
server.
5 FPGA heartbeat LED (green) This LED indicates power-on and power-off sequencing.
• LED blinking: the system is functioning properly, and no action is
necessary.
• LED not blinking: (trained technician only) replace the system board (see
“System board replacement (trained technician only)” on page 228).
6 7 11 14 Processor error LEDs
LED on: An error has occurred to the processor the LED represents. See
“Processor problems” on page 312 for more information.
8 10 12 13 15 DIMM error LEDs LED on: An error has occurred to the DIMM which the LED represents. See
“Memory problems” on page 300 for more information.
9 Fan error LEDs
LED on: An error has occurred to the fan the LED represents. See
“Fan
problems” on page 297
for more information.
General problem determination procedures
Use the information in this section to resolve problems if the event log does not contain specific errors or the
server is inoperative.
If you are not sure about the cause of a problem and the power supplies are working correctly, complete the
following steps to attempt to resolve the problem:
1. Power off the server.
2. Make sure that the server is cabled correctly.
3. Remove or disconnect the following devices if applicable, one at a time, until you find the failure. Power
on and configure the server each time you remove or disconnect a device.
• Any external devices.
• Surge-suppressor device (on the server).
• Printer, mouse, and non-Lenovo devices.
• Each adapter.
• Hard disk drives.
Chapter 5. Problem determination 293