Replacing An Rru Using Assembled Mounting Kits; Replacing An Rru Using A Mounting Kit For A Common Rru - Huawei RRU Hardware Maintenance Manual

RRU
Hardware Maintenance Guide
2.
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Step 2 Instruct the network management system (M2000/U2000) administrator to block the RRU.
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Step 3 Power off the RRU according to the instructions in
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4.2 Replacing an RRU Using Assembled Mounting Kits

Assembled mounting kits are different for common RRUs and blade RRUs.
4.2.1 Replacing an RRU Using a Mounting Kit for a Common
RRU
This section describes the procedure and precautions for replacing an RRU using a mounting
kit for a common RRU.
Prerequisites
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Context
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Issue 16 (2015-03-23)
Set the maximum output power of the TX channels of the RRU to 0 to disable the
maximum output power locking.
On the UMTS or LTE side, log in to the LMT and run the LOC RRUTC command to
disable the maximum output power locking for TX channels of the RRU.
On the GSM side, log in to the SMT. In the left pane of the Site Maintenance Terminal
System window, click Site. In the right pane of the window, double-click Lock RXU
Traffic Capability. In the displayed Lock RXU Traffic Capability window, click the
Config tab. On the displayed tab page, select the target RRU.
On the GSM side, log in to the LMT. Enter LOC BTSRXUTC in the Command Input
box and click Assist to disable the maximum output power locking. Then, Click Exec.
 If there is more than one RRU, perform the operation on each RRU.
 If RRUs are cascaded, set the maximum output power from the lowest-level RRU to reduce the
impact on upper-level RRUs.
On the UMTS side, log in to the LMT and run the BLK BRD command to block the
RRU.
On the LTE side, log in to the LMT and run the BLK BRD command to block the RRU.
On the GSM side, log in to the BSC LMT and run the SET GTRXADMSTAT
command with the parameter ADMSTAT set to LOCK to block the carriers of the RRU.
The operations in 4.1 Preparations Before Replacement
The following tools and materials are available: ESD gloves, M4 and M6 Phillips
screwdrivers, waterproof tape, and PVC insulation tape.
The number and type of RRUs to be replaced are confirmed, and new RRUs are
available.
RRUs and attachment plates in this section are only for reference. The actual RRUs and
attachment plates may be different.
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4 Replacing an RRU
3.2 Powering Off an RRU.
have been performed.
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