Identifying A Service Action; Identifying A Service Action By Using System Event Logs - IBM Power System 8335-GCA Manual

v All of the valves that might restrict the flow of water through the hoses are open in the facility
water system.
v The pumping unit of the facility water system is on and does not have errors.
c. The facility water system is supplying water at the required temperature and flow. For
instructions, see Model 8335-GTB water cooling option (Feature code E2RD).
Does the problem persist?
If Then
Yes: Continue with the next step.
Note: Steps 1- 3 resolve most problems. Ensure that you carefully check steps 1 - 3 before
you continue with the next step.
No: This ends the procedure.
4. Is a processor over heating, but the other processor and the graphics processing units (GPUs) are not
over heating?
If Then
Yes: Check the thermal interface material (TIM) between the cold plate and the processor that is
over heating. Go to Removing a system processor module from a water-cooled 8335-GTB
system and complete the steps to lift the cold plate off the processor. If the TIM pad is
damaged, replace the TIM pad. To replace a TIM pad, go to Replacing a system processor
module in a water-cooled 8335-GTB system and complete the steps for removing and
installing a new TIM pad. This ends the procedure.
No: Continue with the next step.
5. Is a GPU over heating, but the other GPUs and the processors are not over heating?
If Then
Yes: Replace the thermal interface material (TIM) between the cold plate and the GPU that is
over heating. Go to Removing the graphics processing unit from a water-cooled 8335-GTB
system and complete the steps to lift the cold plate off the GPU. Then, go to Replacing the
graphics processing unit in a water-cooled 8335-GTB system and complete the steps for
installing a new TIM pad. If the problem is not resolved, replace the GPU. For instructions
about replacing a GPU, see Removing and replacing a graphics processing unit in the
8335-GTB. This ends the procedure.
No: Continue with the next step.
6. Replace the cold plates. For instructions about how to replace the cold plates, see Removing and
replacing the cold plates in the 8335-GTB. Does the problem persist?
If Then
Yes: Go to "Contacting IBM service and support" on page 110. This ends the procedure.
No: This ends the procedure.

Identifying a service action

Use the following procedures to help you identify the service action that is needed.

Identifying a service action by using system event logs

Use the Intelligent Platform Management Interface (IPMI) program to examine system event logs (SELs)
to identify a service action.
1. Use the ipmitool command to examine SELs.
Beginning troubleshooting and problem analysis
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