Before replacing a power module, you need to note the following points:
Before replacing a power module, switch off the corresponding circuit breaker on the power distribution cabinet.
Do not touch metal parts when removing or installing a power module with the power on.
Before pulling out a power module that is to be replaced, you should first check the location of the module, for example, the cabinet and chassis where the power module resides. Then, locate the power module to be replaced in the chassis and attach a label to the panel to identify the power module.
Hold both sides of the power module and pull the power module out of the chassis, as shown in Figure 1.
Hold both sides of the power module and insert the module into the guide rail of the slot. Ensure that the power module is in good contact with the backplane of the chassis, as shown in Figure 2.
If the fan module fails to return to the normal state, you should contact a Huawei local office for timely technical support.
After replacing the power module, collect the tools. If a power module that is replaced is confirmed to be faulty, you should fill in the Offsite Repair Card for Faulty Materials, and send the card and the faulty power module to a Huawei local office for timely maintenance.