2 Applicable Scope and Precautions
2.1 Applicable Scope
This document provides repair instructions for technicians at service sites authorized by
Huawei. This maintenance manual is confidential and accessible to authorized service centers
(ASCs) and authorized service providers (ASPs) only. While every effort has been made to
ensure the accuracy of this document, errors may still exist. If you find any mistake or have
any suggestion, contact Huawei's customer service.
2.2 Precautions
Pay attention to the following precautions:
Only qualified technicians are allowed to perform repair and calibration.
Perform all operations in electrostatic discharge (ESD) rooms and wear ESD wrist straps
throughout the operations.
Ensure that all components, screws, and insulators are installed properly after repair and
calibration, and that all cables and wires are installed and connected correctly.
Ensure that the soldering is lead-free and compliant with eco-friendly requirements.
2.3 How to Obtain Product and Repair Information
To obtain product and maintenance information, visit Huawei website at:
http://www.huaweidevice.com/cn/technicaIndex.do
ESD is the main cause of damage to electrostatic-sensitive components. Each ASC
must exercise caution to avoid ESD damage and comply with the ESD protection
requirements in this manual.
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