Nautel NX50, Troubleshooting Manual

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NX50 Troubleshooting Manual Responding to alarms
Page 1-38 Issue 6.0 2019-04-01
Maintenance Fault
Summary
(Maintenance
Summary) This summary alarm is triggered if any of the following maintenance related
alarms occur:
Controller alarms:
EEPROM Failure: Config Exciter Changeover High RF Drive
EEPROM Failure: Potentiometers Exgine Not Responding Host Not Booted
EEPROM Failure: Remotes
GPS PLL Unlocked Host Not Responding
EEPROM Failure: Schedule GPS Not Responding Low Battery
EEPROM Failure: Thresholds GPS Sync No 1-PPS Low RF Drive
Exciter A or B Not Responding GPS Unlocked Rack1 Not Responding
GPS Receiver Not Responding
Exciter alarms
:
B+ Sample Uncalibrated High B+ Voltage No Carrier Sync Signal
Carrier Sync Unlocked Low B+ Voltage No External 10MHz
External Inhibit Active No B+ Sample Precorrection Inhibited
Exgine alarms:
AM/FM Mode Mismatched FIFO Underflow Network Misconfigured
DPLL Unlocked Lost External 10MHz System Error
FIFO Overflow Network Down
Module alarms
:
External Disable Active High Temperature No Controller Comms
Front Panel Inhibit Invalid Thermistor Sample Overmodulation
High B+ Voltage Low B+ Voltage Residual PA Voltage
High DC Current Low Fan 1/2 Speed RF Drive Fault
High PA Voltage Low PA Voltage +15V Fail
High RF Drive Low RF Drive
Rack alarms
:
+5V Fail +30V A/B Fail High B+ Voltage
+5V A/B Fail +48V Fail High Rectifier Temp
+15V Fail +48V A/B Fail Low AC Voltage
+15V A/B Fail AC Phase Loss Low B+ Voltage
-15V Fail EEPROM Failure PM 1-20 Not Responding
-15V A/B Fail High AC Voltage Rectifier Fan 1/2 Fail
+30V Fail
Table 1.2: Troubleshooting Summary Alarms
Summary Alarm
Name, AUI (front
panel UI)
Description and Triggering Alarms