Specifications

7
Maintenance and Troubleshooting
90
The CPM or another module
overheats.
• Verify that a generic front panel is not installed in the shelf. Instead, empty slots must have air
management filler panels designed for the shelf’s slots installed to properly maintain airflow and
emissions.
• Check temperatures at the air intake on the overheating module and at the platform’s air exhaust.
Use the information to determine whether the overheating may be caused by warm facility air, a
module failure, or a failed fan module. If the RadiSys Shelf Manager is used, see the troubleshooting
information in the Shelf Management Software Reference for details on how to perform these
queries.
• Try moving the module to a different slot to see if that resolves the overheating.
• Verify there is clearance of at least two inches between the side of the shelf and the side of the rack
cabinet.
• Check the shelf’s air filter for obstructions and dirt.
Sensors generate alarms or events See the troubleshooting recommendations under Sensor alarm troubleshooting on page 125.
The CPM does not work correctly. Check the Shelf Manager’s system event log for significant events related to the CPM. In particular,
verify that the CPM worked correctly when it was installed, and look for any events since then that
would explain the changes. If the log information does not reveal useful events, remove the CPM and
install it in a different slot. If possible, install another CPM of the same kind in the original slot to help
determine whether the CPM is defective.
The OOS LED blinks when the CPM
attempts to power up.
Neither IPMC application image is valid. Upgrade both IPMC application images using the upgrade
instructions supplied with the Promentum software distribution.
Intermittently, the CPM experiences
random data errors.
Verify that the platform’s frame-ground connection is properly connected to a high-quality earth-ground
connection. Check for electrical noise at the backplane power connections and at the power entry
module power inputs. Consider the possibility of a malfunctioning CPM causing electrical noise on
backplane connections.
POST failures or other bootup errors
appear on the serial console or in the
system event log.
For definitions of the error or event codes, see SEL event codes on page 78.
The login prompt does not appear
after BIOS has booted.
• Verify the serial cable is plugged into both the CPM and the system with the serial connection.
• Verify the CPM is inserted into one of the shelf’s node slots.
• Verify the terminal emulation application is set to 115200 bps, no parity, 8 data bits, 1 stop bit, with
no flow control.
• Verify the default Linux port speed has not been changed in the /boot/grub/grub.conf or /etc/inittab
file.
Message: Operating system not
found.
• Make sure an operating system is present on the selected boot media.
• Verify the correct device is first in the list in the BIOS boot menu.
• Verify that an appropriate network link is available between the CPM and the network boot device.
Table 25. Troubleshooting actions based on symptoms (continued)
Symptom Recommendation