User's Manual Part 2

Maintenance, Troubleshooting, and Technical Assistance
10-4 LGCell 4.0 Installation, Operation, and Reference Manual PN 8100-40
620004-0 Rev. E
10.2.2 Troubleshooting Using the LED Indicators
10.2.2.1 LED Indicator Description
The LGCell Main Hub, Expansion Hubs, and RAUs have front panel LEDs which
provide diagnostic information and operational status of each unit. Together they pro-
vide an efficient diagnostic display system, which help technicians find the fault if
there is a malfunction. The LED indicators for each unit are described in the follow-
ing table.
Table 10-1 LGCell Equipment LED Indicators
MMF Port
Indicators Color Indicates
LINK STATUS
Green Good connection to the Expansion Hub that is connected to the port.
Red Connection problem with the Expansion Hub that is connected to the port.
SYNC
Green Expansion Hub connected to the port is operating properly.
Red An alarm with the Expansion Hub that is connected to the port.
Unit
Functionality
Indicators Color Indicates
SYNC
Green Main Hub is correctly producing the synchronization signal.
Off Main Hub is not correctly producing the synchronization signal.
POWER
Green Main Hub has power.
UTP/STP Port
Indicators/Color
Indicates
LINK STATUS SYNC
Green Green RAU is connected and functioning properly.
Green Red RAU is connected but malfunctioning.
Red Green RAU has been disconnected or the cable is cut.
Red Red No RAU is connected.
Unit
Functionality
Indicators Color Indicates
SYNC
Green Expansion Hub is receiving the synchronization signal from the Main Hub.
Off A fault with the MMF downlink or the unit is faulty.
POWER
Green Expansion Hub has power.
Unit
Functionality
Indicators Color Indicates
POWER
Green RAU is receiving power from the Expansion Hub.
SYNC
Red RAU lost sync and has shut down RF power.
Off No fault.
MAIN HUBEXPANSION HUBRAU