Troubleshooting
Problem
3.3V and 5V power failures on the Management Module do not create a specific power failure error entry in Management Module log.
Resolving The Problem
| Source |
|---|
RETAIN tip: H183351
| Symptom |
|---|
3.3V and 5V power failures on the Management Module do not create a specific power failure error entry in Management Module log.
Instead, the customer will see non-related events, for example: Failure reading I2C device and multiple blower failures.
| Affected configurations |
|---|
The system may be any of the following IBM BladeCenter:
- BladeCenter T, type 8730, any model
- BladeCenter T, type 8720, any model
Management Module Option part number 48P7055, Replacement part number (FRU) 73P9326
| Solution |
|---|
None
| Workaround |
|---|
None
| Additional information |
|---|
If the power supplies (3.3 or 5V) on the Management Module experience problems, the events and log entries generated by the Management Module do not explicitly call out the 3.3V or 5V line as suspect.
If there is a problem which causes the 3.3V or 5V powergood indicator to trip, the Management Module behaves in such a way as to maintain the functionality of the system and preserve the equipment.
This protection involves shutting down the subsystems hooked into the respective power lines.
As a result of this architecture, the Management Module will experience failures on various subsystems which are logged for the user (blowers, I2C communication, etc.).
However, there is not a specific event for the 5V and 3.3V line.
Document Location
Worldwide
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Document Information
Modified date:
29 January 2019
UID
ibm1MIGR-58437