Nautel NX50, Troubleshooting Manual

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NX50 Troubleshooting Manual Responding to alarms
Page 1-72 Issue 6.0 2019-04-01
3. Carefully remove and retain four (4) sets of mounting hardware from the USB audio
interface PWB from the exciter panel.
4. Obtain a replacement USB audio interface PWB (Nautel Part # NAPI151).
5. Install the new USB audio interface PWB by reversing Step 2 and Step 3 . Ensure all
connections are tight. For connector mating assistance, refer to the connector mating
tables in Section 3, “Wiring/connector lists” on page 3-1 .
6. Turn on (enable) the ac power source. Set the transmitter to its RF On state. Ensure
any previously present alarms have cleared.
Exgine PWB replacement
1. From the front panel AUI, navigate to
Menu
>
User Settings
>
Exgine Settings
and
record all fields (with exception of the MAC Address).
2. Set the transmitter to its RF Off state. Turn off (disable) the ac power at the source.
Open the front door to gain access to the exciter panel (see Figure 1.9 on page 1-65 ).
3. Disconnect all cables attached to the Exgine PWB (A7), taking note of the connector
labels on the cables and the PWB.
4. Carefully remove and retain four (4) sets of mounting hardware and remove the
Exgine PWB from the exciter panel.
5. Obtain a replacement Exgine PWB (Nautel Part # NAPE74C/01).
6. Install the new Exgine PWB by reversing Step 3 and Step 4 . Ensure all connections are
tight. For connector mating assistance, refer to the connector mating tables in Section
3, “Wiring/connector lists” on page 3-1 .
7. Turn on (enable) the ac power source. Re-enter the information recorded in Step 1 . Set
the transmitter to its RF On state. Ensure any previously present alarms have cleared.