Figure 5-11 Removing The Psu; Figure 5-12 Installing The Psu - Huawei BTS3900 V200R010 Site Maintenance Manual

5 Replacing Components of the BTS3900
Prerequisite
l
l
l
Context
This module is hot swappable.
Take proper ESD prevention measures, for example, wearing an ESD wrist strap or a pair of
ESD gloves, to protect the PSU from electrostatic damage.
Procedure
Step 1 Loosen the screws on the handle of the PSU panel by using a flathead screwdriver.
Step 2 Pull the handle gently to disconnect the buckle of the PSU from the subrack, and then remove
the PSU from the slot, as shown in

Figure 5-11 Removing the PSU

Step 3 Place the new PSU in the corresponding slot and loosen the screws on the handle of the PSU.
Then, pull the handle outwards.
Step 4 Slide the PSU along the guide rails into the slot and then push the handle back.
Step 5 Tighten the screws on the handle, as shown in

Figure 5-12 Installing the PSU

5-18
The type of faulty PSU is confirmed and the new PSU is ready.
The new PSU is intact and its version is consistent with the version of the faulty PSU.
The tools and materials are ready. The tools and materials are the ESD wrist strap or gloves,
cross screwdriver, ESD box or bag, and key to the cabinet door.
CAUTION
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Figure 5-11.
Figure 5-12.
BTS3900 WCDMA
Site Maintenance Guide
Issue 07 (2009-08-30)