Replacing The Prru3901 - Huawei DBS3900 Installation Manual

LampSite
Site Maintenance Guide
pRRU3901 is an indoor remote radio unit. It processes RF signals. Replacing the pRRU3901
interrupts all the services carried on it.
Prerequisites
l
l
l
l
Context
It takes about 5 minutes to replace the pRRU3901.
Procedure
Step 1 Instruct the network operator to block the pRRU3901.
l On the UMTS side, log in to the LMT and run the BLK BRD command to block the RF
l On the LTE side, log in to the LMT and run the BLK BRD command to block the RF daughter
Step 2 Wear ESD gloves.
Issue 05 (2015-01-15)
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Replacing the pRRU3901 when:
– The functional modules inside a pRRU3901 or the housing of pRRU3901 is damaged.
– Adding the RF daughter board or Wi-Fi daughter board.
The hardware type is confirmed and a new pRRU3901 is available.
The labels and connections of the cables connected to the pRRU3901 are recorded.
The following tools are available: an electrostatic discharge (ESD) wrist strap and ESD
gloves.
NOTE
The pRRU3901 can be installed on a metal pole, wall, or ceiling, and the procedures for replacing the
pRRU3901 are almost the same. The following uses a ceiling-mounted pRRU3901 as an example.
NOTE
The LampSite solution supports immediate block, idle block, and delayed block. Application of idle block
and delayed block produces the same effect as application of immediate block.
daughter board of the pRRU3901.
board of the pRRU3901.
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Replacing the pRRU3901

8 Replacing the pRRU3901
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