User's Manual

044-05311 Rev A 4-1
Chapter 4
Maintenance
Introduction
This chapter contains periodic maintenance and procedures to return the Nexus RT for service.
Periodic Maintenance
Refer to Table 4-1 for Periodic maintenance requirementsand the intervals at which to perform the tasks.
Troubleshooting
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.
Alarm Faults
The Nexus RT Web Interface pages provide an overview of the repeater’s status and alarm situation asl isted
in
Table 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
Task Interval Action
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