Nautel NX15, Troubleshooting Manual

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NX25/NX15 Troubleshooting Manual Responding to alarms
Issue 5.0 2016-05-06 Page 1-65
6. Obtain a replacement rack interface PWB (Nautel Part # NAPI152A) and set DIP switch S1
as follows.
7. Reverse Step 1 through Step 5 to reinstall the PWB.
8. If you are replacing the Controller’s rack interface PWB, disengage all RF power modules in
the transmitter before turning on the ac power (see “Removing and reinstalling RF power
modules” on page 1-45 ).
9. One at a time, reinstall each RF power module. The LED sequence on the front panel of
each module should change to solid red. Reconnect each RF power module’s PDM cable; the
LED sequence should change to flashing amber.
10. Upgrade the subsystem software using the AUI’s
Upgrade Software
page under the
System
Settings
menu. See the NX25/NX15 Operations and Maintenance Manual for detailed
instructions.
S1 Position A6 Setting
8 OPEN
7 OPEN
6 OPEN
5 CLOSED
4 CLOSED
3 CLOSED
2 OPEN
1 OPEN