Figure 5-16 Removing The Screws From The Mounting Ears - Huawei BTS3900 V200R010 Site Maintenance Manual

BTS3900 WCDMA
Site Maintenance Guide

Figure 5-16 Removing the screws from the mounting ears

Step 7 Pull out the power supply subrack with one hand, hold the power supply subrack with the other
hand, and then remove it.
Step 8 Put the faulty power supply subrack into an ESD box.
Step 9 Reversely perform the previous steps to install the new power supply subrack and removed
PMUs/PSUs into the cabinet.
Step 10 Connect the removed cables to the ports on the panel of the power supply subrack and on that
of the PMU according to the marks.
Step 11 Power on the BTS3900.
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Postrequisite
After replacing the power supply subrack, perform the following operations:
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Issue 07 (2009-08-30)
Check the cables and ensure that they are correctly and tightly connected.
Ensure that the related alarms are cleared after the equipment is powered on.
Contact the local Huawei office to handle the faulty power supply subrack.
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5 Replacing Components of the BTS3900
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