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BTS3900 WCDMA
Site Maintenance Guide
Module
BBU
Standby BBU
FAN
RFU in slot 0
RFU in slot 1
RFU in slot 2
RFU in slot 3
RFU in slot 4
RFU in slot 5
Procedure
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Issue 07 (2009-08-30)
NOTE
The RFUs are in slots 0 to 5 from left to right.
Power off the BTS3900 in a normal situation.
1.
Set the DC power distribution switches labeled RFU0 to RFU5 on the DCDU-01 to
OFF.
2.
Set the DC power distribution switch labeled BBU on the DCDU-01 to OFF.
3.
Set the DC power distribution switch labeled FAN on the DCDU-01 to OFF.
4.
Set the DC power distribution switches labeled SPARE1 and SPARE2 on the
DCDU-01 to OFF.
5.
Set the main power switch to OFF.
Power off the BTS3900 in an emergency.
CAUTION
Powering off the BTS3900 in an emergency may damage the equipment or boards. Do not
use this method in any situation other than in an emergency.
1.
Set the main power switch to OFF.
2.
Set all the DC power distribution switches on the DCDU-01 to OFF if time permits.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
4 Powering On/Off the BTS3900
Power Switch
BBU
SPARE1
FAN
RFU0
RFU1
RFU2
RFU3
RFU4
RFU5
4-5
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