All rights reserved. Safety Information Following All Safety Precautions Before any operation, read the instructions and precautions in this document carefully to minimize the possibility of accidents. The Danger, Caution, and Note items in the documents do not cover all the safety precautions that must be followed. They only provide the generic safety precautions for operations.

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Page 3 All other trademarks and trade names mentioned in this document are the property of their respective holders. Notice The purchased products, services and features are stipulated by the contract made between Huawei and the customer. All or part of the products, services and features described in this document may not be within the purchase scope or the usage scope.

The maintenance tasks consist of power supply and grounding system maintenance, cabinet maintenance, and power-on and power-off operations. This document also describes the procedures for replacing the components.

Page 6 This describes how to power on and power off the BBU As for the power-off, the operation in a normal situation and that in an emergency are different. Keyboard Operations The keyboard operations that may be found in this document are defined as follows. Page 8 Press the primary mouse button twice continuously and quickly without moving the pointer.

Drag Press and hold the primary mouse button and move the pointer to a certain position. Page 12 Figure Disconnecting the cable Compared with issue 02 , no information is added. The maintenance items are related to the fans, equipment surface, cleanliness, LEDs, and ambient temperature in the cabinet.

Table describes the maintenance items for the BBU equipment.


BBU3900 Hardware Description(16)(PDF)-En

Contents About This Document Compared with issue 07 , 15 , and 14 , no information is added. Compared with issue 07 , 15 , and 14 , the following part is modified: Part 6. Compared with issue 07 , 15 , and 14 , no information is deleted. Compared with issue 14 , no information is added. Compared with issue 14 , the following part is modified: Part 6.


Huawei BBU3900 Hardware Maintenance Manual

The document will provide the required tools, contacts and procedures to be followed. Site Awareness There are a number of site in Canada that are in remote location that require situational awareness therefore when travelling to and from remote site locations it is important that the engineer is equipped for travel to remote sites Engineers must also be aware that Tower work takes precedent over any other site work; therefore if tower work is in progress then the tower crew is in control of the site. If tower work is in progress then hard hats are required to be worn onsite. The following section will provide a breakdown of the activities required for successful commissioning of the base station. This report then provides the basis for scheduling activities for commissioning preparation and commissioning activities.

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