170 Chapter3
Assembly Replacement
Procedure 4. A1A2 RPG
Procedure 4. A1A2 RPG
Removal
1. Remove the A9 input attenuator as described in "Procedure 8. A7
through A13 Assemblies."
2. Disconnect the RPG cable from the A1A1 keyboard assembly.
3. If the serial number of your instrument is above or equal to
3738A03198 (8560E/EC) proceed to step a. If the serial number of
your instrument is below3738A03198 (8560E) proceed to step b.
a. Pull the front panel RPG knob off of the face of the front panel of
the spectrum analyzer. Proceed to step 4.
b. Remove the set screw from the front panel RPG knob using a
number 6 hex (Allen) wrench. Proceed to step 4.
4. Use a 7/16-inch nut driver, set to 20-in./lbs., to remove the nut
holding the RPG shaft to the front panel.
5. Remove the RPG.
Replacement
1. Place the RPG into the front frame with the cable facing the bottom
of the spectrum analyzer. Place a lock washer and nut on the RPG
shaft to hold it in the frame. If the serial number of your instrument
is below 3738A03198 (8560E) proceed to step a. Otherwise, proceed
to step 2.
a. Insert the set screw into the RPG knob using a number 6 hex
(Allen) wrench. Proceed to step 2.
2. Use a 7/16-inch nut driver to secure the RPG assembly to the front
frame.
3. Connect the RPG cable to A1A1J2.
4. Insert the RPG knob into the front panel assembly.
5. Replace the A9 input attenuator as described in "Procedure 8. A7
through A13 Assemblies."
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