11. If the issue cannot be resolved by above actions, please call service to review the issue symptom and
see whether the system I/O board or processor board replacement is necessary.
Server does not power off
Complete the following steps until the problem is resolved:
1. Determine whether you are using an Advanced Configuration and Power Interface (ACPI) or a non-ACPI
operating system. If you are using a non-ACPI operating system, complete the following steps:
a. Press Ctrl+Alt+Delete.
b. Turn off the server by pressing the power-control button and holding it down for 5 seconds.
c. Restart the server.
d. If the server fails POST and the power-control button does not work, disconnect the power cord for
20 seconds; then, reconnect the power cord and restart the server.
2. If the problem remains or if you are using an ACPI-aware operating system, suspect the system board
(system board assembly).
Power problems
Use this information to resolve issues related to power.
System error LED is on and event log "Power supply has lost input" is displayed
To resolve the problem, ensure that:
1. The power supply is properly connected to a power cord.
2. The power cord is connected to a properly grounded electrical outlet for the server.
3. Make sure that the power supply AC source is stable within the supported range.
4. Swap the power supply to see if the issue follows the power supply, if it follows the power supply, then
replace the failing one.
5. Review the event log and see how the problem it is to follow the event log actions to resolve the
problems.
Software problems
Use this information to solve software problems.
1. To determine whether the problem is caused by the software, make sure that:
• The server has the minimum memory that is needed to use the software. For memory requirements,
see the information that comes with the software.
Note: If you have just installed an adapter or memory, the server might have a memory-address
conflict.
• The software is designed to operate on the server.
• Other software works on the server.
• The software works on another server.
2. If you receive any error messages while you use the software, see the information that comes with the
software for a description of the messages and suggested solutions to the problem.
3. Contact your place of purchase of the software.
216
ThinkSystem SR645 V3 User Guide