Huawei MTS9300A - Replacing an ESM

Figure 4-15 Installing a new light
Step 4 Connect the light power cable.
----End
Follow-up Procedure
Pack the removed component and send it to the local Huawei warehouse.
4.3.10 Replacing an ESM
Prerequisites
● The protective gloves, Phillips screwdriver and socket wrench are available.
● You have
conrmed the model of the ESM to be replaced and prepared a new
ESM.
● You are authorized to enter the site with the key.
Context
ESM replacement may cause a system power failure. To prevent power failures,
ensure that other power sources, such as the mains, diesel generator, or a third-
party DC power source, provide continuous power supply.
Replacement Requirements
Conditions for the ESM to enter and exit the maintenance mode:
1. Hold down the Manual ON/OFF button for at least 15s to enter the
maintenance mode.
2. In the maintenance mode, hold down the Manual ON/OFF button for at least
15s to exit the maintenance mode.
Before replacing an ESM in an actual maintenance scenario, hold down the
Manual ON/OFF button for the ESM to power
o. After the ESM is replaced, hold
down the Manual ON/OFF button for at least 15s on the new ESM to exit the
maintenance mode.
Removing the Old ESM
Step 1 Wear the protective gloves.
MTS9300A Telecom Power (Ooredoo, Indonesia,
MTS9304A-HD2002)
User Manual 4 Maintenance
Issue 06 (2021-10-13) Copyright © Huawei Technologies Co., Ltd. 61