For compute module-specific information, see the product user guide on the Hewlett Packard
Enterprise Information Library.
Compute module does not power on with the PCIe expansion module
attached
Symptom
IML reports the following message: Power on Denied (Service Information: Mezz Slot 1, Read Error)
Cause
• The mezzanine pass-through card is not installed on mezzanine connector 1.
• The mezzanine pass-through card is not properly seated on mezzanine connector 1.
• Switch 9 on the System Maintenance Switch is not set to the ON position.
Action
1. Verify that the mezzanine pass-through card is installed on mezzanine connector 1.
2. If the mezzanine pass-through card is installed on mezzanine connector 1, reseat the card on
mezzanine connector 1.
3. Locate the System Maintenance Switch on the system board and verify that switch 9 is in the ON
position.
For compute module specific information, see the product user guide on the Hewlett Packard
Enterprise Information Library
Compute module with the PCIe expansion module installed does not fully
seat in the compute module bay in the frame
Symptom
The compute module with the expansion module installed, does not fully seat into the frame.
Cause
The expansion module is not installed properly on the compute module.
Action
1. Remove the expansion module from the compute module.
2. Reinstall the expansion module on the compute module.
3. Install the compute module with the expansion module in the frame.
For compute module specific steps, see the compute module user guide on the Hewlett Packard
Enterprise Information Library.
The PCIe card is not running at the correct PCIe link width
Symptom
The PCIe card is not running at the correct PCIe link width.
Hardware issues 61
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