Huawei DBS3900 Installation Manual page 121

LampSite
Site Maintenance Guide
This chapter provides information about the changes in different document versions of
LampSite Site Maintenance Guide.
2 RHUB3908 Maintenance Items
This chapter describes the RHUB3908 maintenance items, involving the equipment room,
equipment, power system, and grounding system.
3 pRRU3901 Maintenance Items
This chapter describes the pRRU3901 maintenance items, involving equipment and power
system.
4 Powering On and Powering Off the RHUB3908
After the RHUB3908 is powered on, check the indicator status. Power off the RHUB3908 in
normal or emergency mode as required.
5 Powering On and Powering Off the pRRU3901
After the pRRU3901 is powered on, check the power supply voltage and indicator status. Power
off the pRRU3901 based on the power supply mode.
6 Replacing the RHUB3908
The RHUB3908 is an indoor convergence unit. It converges multiple pRRUs to the BBU3900.
Replacing the RHUB3908 interrupts services carried on the serving cell.
7 Replacing an Optical Module
An optical module provides a port for opto-electronic conversion. This enables the transmission
between the RHUB3908 and BBU3900 through the optical fiber. Replacing the optical module
requires removing the optical fibers. This interrupts all the services.
8 Replacing the pRRU3901
pRRU3901 is an indoor remote radio unit. It processes RF signals. Replacing the pRRU3901
interrupts all the services carried on it.
Conventions
Symbol Conventions
The symbols that may be found in this document are defined as follows.
Symbol
Issue 05 (2015-01-15)
Description
Indicates an imminently hazardous situation which, if not
avoided, will result in death or serious injury.
Indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.
Indicates a potentially hazardous situation which, if not
avoided, may result in minor or moderate injury.
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