BIRD Thruline APM-16, Руководство по эксплуатации

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RF Directional Thruline® Wattmeter Model APM–16
20
Repair
“QC” Connectors
The Bird 43 is normally supplied with Quick-Change Female N type connectors.
Other Bird “QC” connectors are available (See
"Available “QC” Type
Connectors" on page 26
). To change a QC connector, remove the
8-32 screw at each corner of the connector and then pull it straight outward.
Reverse this to install the new connector.
Replacing the Meter
1. Remove the back cover.
2. On the back of the meter, loosen both nuts securing the meter leads and
remove the leads.
3. Remove the large Phillips screws securing the meter shock ring.
Note:
These screws are on either side of the housing, even with
the meter.
4. Pull the meter straight out.
Note:
If necessary, the meter retaining ring and shock mount can
be removed.
5. Replace the meter by reversing the steps above.
Replacing the Instrumentation Module
Note:
The instrumentation module contains the line section and
circuit board chassis.
1. Remove the back cover.
2. Use a 0.050" hex wrench, turning clockwise, to loosen the set screw in the
power switch knob.
3. Pull the knob straight off.
4. Unsolder the leads on the top of the circuit board chassis.
Note:
Note the color coding when unsoldering so the leads can be
returned to their original positions.
5. Remove the phillips screws on the front of the unit, on either side of the
element socket.
6. Pull the instrumentation module straight out.
7. Install a replacement module by reversing the steps above.