Huawei E9000 Troubleshooting Manual page 97

Huawei Servers
Troubleshooting
Fault
Symptom
A server
powers
off
immediat
ely when
powered
on.
The
message
"no
signal" is
displayed
immediat
ely after
the server
powers
on.
Issue 20 (2020-09-25)
Handling Procedure
1. Check whether the external
power supply is normal,
including the PDUs, PSUs, and
power cables.
2. Check whether the total power
of the PSUs configured for the
server is less than the power
required for running the server.
3. Collect iMana 200 or iBMC
logs, and query the CPLD
register to determine whether
the power supply link to the
mainboard has failed.
NOTE
For an E9000 server, you are
advised to use the MM910 for
one-click log collection.
4. Check the power supply unit
(PSU) backplane and the
mainboard.
1. Collect iMana 200 or iBMC
logs, and query the CPLD
register to determine whether
the power supply link to the
mainboard has failed.
NOTE
For an E9000 server, you are
advised to use the MM910 for
one-click log collection.
2. Set the printing level for
debugging the BIOS with the
iMana 200 or iBMC CLI, restart
the server, and save system
serial port logs. When the fault
is repeated, collect iMana 200
or iBMC logs and download
the .bin file of the BIOS.
NOTE
You can run the ipmcset -t
maintenance -d biosprint -v 1
command to print all BIOS logs.
For details, see "Querying and
Setting BIOS Print Enablement
Status (biosprint)" in the
User Guide of the required
version.
Copyright © Huawei Technologies Co., Ltd.
5 Diagnosing and Rectifying Faults
Quick Recovery Method
1. Check all external power
supplies, including the
PDUs, PSUs, and power
cables. Replace any faulty
components and check
whether the fault is
rectified.
● If yes, no further action is
required.
● If no, go to 2.
2. Replace the mainboard or
PSU backplane.
1. Run the ipmcset -d
clearcmos command to
clear the CMOS. Then check
whether the fault is
rectified.
● If yes, no further action is
required.
● If no, go to 2.
NOTICE
Running the ipmcset -d
clearcmos command will
restore the BIOS defaults.
Exercise caution when
running this command.
2. Upgrade the iMana 200 or
iBMC, and the BIOS. Then
check whether the fault is
rectified.
● If yes, no further action is
required.
● If no, go to 3.
3. Remove the external
iBMC
devices, including the PCIe
cards and HBAs. Then check
whether the fault is
rectified.
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