Powerwave Technologies NEXUS FT, Installation And Service Manual

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Nexus FT Troubleshooting
044-05251 Rev B 4-3
12 High temp CU Warning The CU PCBA temperature is higher than 90°C
Ceasing The CU PCBA temperature has fallen below 90°C
13 REFO error Error Significant REFO drift or error detected by CU
14 Ext REFO
error Warning Suggested remedy: Check the reference source and the cables
15 CU battery
fault CU Warning CU RAM battery fault. The battery for the RAM on the CU PCBA
has a voltage outside the normal 2.7 to 3.5 Volt. An alarm may be
initiated at start-up if the WRH has been stored out of power for a
long time. Suggested remedy: Ensure jumper P3 on the CU PCBA
is mounted to charge the battery
Ceasing The cause of the alarm has ceased
16 SW load error CU Error Software load error. An error has occurred during a software load
process. The flash memory does not contain a proper software.
Suggested remedy: Check the CU software using the OM-Online
SW Manager. Do NOT restart the WRH
17 Log cleared CU None Log memory has been cleared. The check sum in the Events Log
memory is faulty. The log is cleared. Can be caused of a bad RAM
battery backup or low voltage to the RAM
18 RTC restarted CU None The time is changed by the operator (logged to keep track of
changes made to the RTC)
Warning Time reset to 1994-01-01. The RTC was unable to keep track of
the time and did a reset. Suggested remedy: Ensure jumper P3 on
the CU PCBA is mounted to charge the battery
19 RTC error Error RTC does not operate. The CU has detected an error in the RTC
operation which makes the time unreliable. Suggested remedy:
Replace the CU PCBA
20 Door open
alarm External Config The door has been open 30 seconds without disabling the alarm
Ceasing The door has been closed 30 seconds, or the alarm is disabled
21 External
alarm 1 External Config External alarm input EA1 active more than 1 second
Ceasing External alarm input EA1 no longer active
22 External
alarm 2 External Config External alarm input EA2 active more than 1 second
Ceasing External alarm input EA2 no longer active
23 External
alarm 3 External Config External alarm input EA3 active more than 1 second
Ceasing External alarm input EA3 no longer active
24 External
alarm 4 External Config External alarm input EA4 active more than 1 second
Ceasing External alarm input EA4 no longer active
Table 4-2 Alarm Troubleshooting (Continued)
ID Alarm Text Alarm Unit Alarm Description