Powerwave Technologies Inc. 5JS0109 Manuale Utente

044-05311 Rev A

4-1

This chapter contains periodic maintenance and procedures to return the Nexus RT for service.

Refer to Table 4-1 for Periodic maintenance requirementsand the intervals at which to perform the tasks.

The sections that follow contain a list of problems that could occur and a few suggested actions that might 
correct each problem. If the suggested corrective action does not eliminate the problem, please contact your 
Powerwave field representative or customer service for further instruction.

The Nexus RT Web Interface pages provide an overview of the repeater’s status and alarm situation asl isted 
inTable 4-2 Nexus RT Alarms . Please refer to the the Nexus RT Configuration Manual (044-05341) for more 
information.

Table 4-1  Recommended Periodic Maintenance

Inspection of cables 
and connectors

12 months

Inspect power and RF cables for signs of damage or wear (frayed 
insulation, cracks, punctures, etc.) Check connections to be sure 
they are tight

Optional

Perform cable sweeps

Clean equipment

Clean as required depending on operating environment

Table 4-2  Nexus RT Alarms

Power Supply Voltage

Modem SIM Card Door Open

High Temperature

Flash Disk Failure

NEP Improper ShutDown

OS Rebooted

Modem Disconnected

External Contact 1

External Contact 2

External Contact 3

External Contact 4

Modem Signal Strength Out of Range

Invalid Kernel Version

Invalid UBoot Version

High Return Loss

Heart Beat

Power Amplifier Over Power

Communication Failure

Slice Module Missing

Echo Canceller Not Balanced

Reference PLL Unlocked

Master Synthesizer Unlocked

OBS LO Synthesizer Unlocked

TX LO Synthesizer Unlocked

RX LO Synthesizer Unlocked

RX ADC PLL Unlocked

FPGA PLL Unlocked

Echo Canceller Error

RX ADC Overflow Reported

OBS ADC Overflow Reported

DDC Overflow Reported

DUC Overflow Reported

PA High Temperature

High VSWR Level

LNA Fault

High Output Power

Invalid FPGA Version

Invalid FX2 Version

Invalid DSP Version