Huawei TaiShan Troubleshooting Manual page 52

TaiShan Servers
Troubleshooting
Fault
Sympto
m
The
chassis
where a
high-
density
server is
located
has no
power.
Issue 12 (2022-08-30)
Handling Procedure
1. Check whether the external
power supply to the chassis is
normal or whether a power
overload has occurred.
2. Remove all management
modules and fan modules,
label them with the slot
numbers, and check whether
their power connectors are
normal.
3. Remove all PSUs, install the
PSUs back one at a time in
ascending order by slot number
(ensure that only one PSU is
installed at the same time),
and check whether the chassis
can be connected to the power
source. If the chassis cannot be
connected to the power source
no matter which PSU is
installed, replace the chassis.
4. If the chassis cannot be
connected to the power source
after a PSU is installed, replace
the PSU.
5. After verifying that the chassis
and PSUs can be connected to
the power source, install only
one PSU. Then install the fan
modules and management
modules one at a time in
ascending order by slot number,
and check whether the module
can be connected to the power
source.
6. After the fault is rectified,
install the fan modules and
management modules back
into their original slots.
Copyright © Huawei Technologies Co., Ltd.
5 Diagnosing and Rectifying Faults
Quick Recovery Method
Follow the handling procedure
to replace any faulty modules.
45