Nautel NX15, Troubleshooting Manual

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NX25/NX15 Troubleshooting Manual Responding to alarms
Issue 5.0 2016-05-06 Page 1-5
4. Refer also to Table 1.2 on page 1-35 for Summary alarms that can occur - when properly
configured - as remotely monitored outputs .
5. If the troubleshooting and subsequent replacement of a suspect PWB or RF power module
does not remove the fault condition, contact Nautel.
List of current alarms
If an alarm exists and is being recognized by the transmitter, it is displayed under the
Alarms
tab of
the transmitter status page (see Figure 1.1 on page 1-4 ). The
Device
name indicates the sub-system
origin of the alarm. The sub-systems that can be displayed are:
– Controller: All alarms in this sub-system apply to the controller.
– Exciter A: All alarms in this sub-system apply to exciter A.
– Exciter B: All alarms in this sub-system apply to exciter B.
– Rack #: All alarms in this sub-system apply to the associated rack (or cabinet).
– Module #: All alarms in this sub-system apply to the associated RF power module.
Table 1.1 on page 1-6 contains a column for most
Alarms
that can occur, sorted alphanumerically for
each sub-system. The
Description and Troubleshooting Action
column provides a brief description
of the alarm, troubleshooting tips and a cross-reference to more detailed troubleshooting, as
applicable.
NOTE:
Table 1.2 lists the Summary alarms that can be configured for remote monitoring through the
local or remote AUI’s Remote I/O -> Remote Outputs menu (see the “Operating the
Transmitter” section of the Operations & Maintenance Manual for configuration details).
Each Summary alarm can be triggered by any one alarm in a specific sub-set, as shown in
Table 1.2 . The Description and Trigger Alarms column of Table 1.2 provides a brief
description of the summary alarm and a list of the triggering alarms. To determine the root
cause(s) of a Summary Alarm, check the local or remote AUI for an offending trigger alarm
and refer to its troubleshooting information for more details.
NOTE:
Before undertaking any troubleshooting, record all AUI meter readings and note if any other
alarms are displayed on the
Transmitter Status
page
.
Record all alarms. The most
convenient way to do this is by using a web browser over a LAN connection to save screen shots
of critical status, meter and alarm pages. From the
Meters
page, press the information (
!
)
button for each sub-device (Controller, Exciter and Module) to view (and save) detailed
information.