DRH
Hardware Maintenance Guide
4 Replacing a DRH
Issue 1.0(2013-04-10)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
6
4
Replacing a DRH
This chapter describes the procedure and precautions for replacing a DRH.
Prerequisites
The WebLMT or M2000 communicates with the station properly.
The types of faulty DRHs are confirmed as follows:
−
Log in to the WebLMT or M2000 and run the MML command to query the
manufacturing information of the DRHs. The types of DRHs to be replaced can be
determined according to the values of
Type
and
Description
in the command
execution result.
−
Run the
DSP BRDMFRINFO
command.
Tools and materials, such as ESD gloves, M5 Phillips screwdrivers, M6 Phillips
screwdrivers, M6 inner hexagon torque wrench, waterproof tape, and PVC insulation
tape, are ready.
The number and type of DRHs to be replaced are confirmed, and new DRHs are ready.
Context
Figure 4-1 shows DRH components.
Figure 4-1
DRH components
