Fault
Symptom
Handling Procedure Quick Recovery Method
A server
powers
o
immediat
ely when
powered
on.
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
congured 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. Check all external power
supplies, including the
PDUs, PSUs, and power
cables. Replace any faulty
components and check
whether the fault is
rectied.
● If yes, no further action is
required.
● If no, go to 2.
2. Replace the mainboard or
PSU backplane.
The
message
"no
signal" is
displayed
immediat
ely after
the server
powers
on.
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
le 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 iBMC
User Guide of the required
version.
1. Run the
ipmcset -d
clearcmos command to
clear the CMOS. Then check
whether the fault is
rectied.
● 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
rectied.
● If yes, no further action is
required.
● If no, go to 3.
3. Remove the external
devices, including the PCIe
cards and HBAs. Then check
whether the fault is
rectied.
Huawei Servers
Troubleshooting 5 Diagnosing and Rectifying Faults
Issue 20 (2020-09-25) Copyright © Huawei Technologies Co., Ltd. 88