common tool which follows Intel’s IPMI standard. Check for coolant leakage status with command lines
as shown.
–
The event logs shown with the parameter sel elist.
–
Liquid Leak ׀ EAh ׀ ok ׀30.1׀ Transition to Critical from less severe
The status of all sensors can be fetched with the parameter sdr elist. If coolant leakage happens, the
log above will show up.
• If the server is within reach, and the amber LED is lit on the front operator panel, potential coolant leaks
may have occurred. It is required to open the top cover to check the LED status of the liquid detection
sensor module. See
“Front operator panel LEDs” on page 294 and “Liquid detection sensor LED” on page
313
for more details.
Steps to resolve coolant leaks
If the LED on the liquid detection sensor module is blinking green, follow the procedures to get help.
1. Check for green coolant leakage around the radiator, coolant pipes and pumps.
2. If green coolant found, power off the server and remove the LACM.
3. Clean up the coolant from any components in the chassis. Inspect the server for any signs of moisture in
sockets or gaps.
4. Contact Lenovo Support.
Fan board problems
Use this information to resolve issues related to the fan board.
To resolve the problem, do the following:
1. Make sure that all the cables of the fan board are securely connected to the system board.
2. Make sure that all fans are properly inserted into the fan board.
3. Power on the server and then go to event log to check the fan status.
4. If the fan module in any slots shows error, update the firmware.
5. If the problem persists after firmware update, swap the defective fan with a good one.
6. If the fan error follows with a specific fan module after swapping, replace the fan module.
7. If the fan error follows with a specific fan slot after swapping, replace the fan board.
8. If the fan error follows with a specific fan cable after swapping, replace the fan cable.
Hard disk drive problems
Use this information to resolve issues related to the hard disk drives.
•
“Server cannot recognize a hard drive” on page 318
• “Multiple hard drives fail” on page 318
• “Multiple hard drives are offline” on page 319
• “A replacement hard disk drive does not rebuild” on page 319
• “Green hard disk drive activity LED does not represent actual state of associated drive” on page 319
Chapter 8. Problem determination 317