Installation Note N5232-90101 15
Install the Wire Harnesses
To see an image showing the location of these wire harnesses, click the Chapter 6 bookmarks “Bottom Ribbon
Cables and Wire Harnesses, 2-Port, Option 216” in the PDF Service Guide
1
. New parts are listed in
If not already done, connect these wire harnesses:
• 8121-0982 A19 test set motherboard J8 to A29 60 dB step attenuator
• 8121-0982 A19 test set motherboard J6 to A30 test port 2 source attenuator
Step 9.
Secure the Hex Nuts on the Front Panel Bulkhead Connectors
Some of the new cables that were installed in the previous step connect to the front panel bulkhead. These
cables were shipped with hex nuts. If not already done, secure the cable connectors to the front panel
bulkhead with the hex nuts, torquing to 21 in-lbs.
Step 10. Remove the Old Lower Front Panel Overlay
for this step of the procedure. Although a 4-port PNA is shown in the graphic, the concept is
the same for the 2-port PNA. New parts are listed in
1. From the back side of the front panel, use a blunt object in the cutouts in the lower front dress panel to
push on the old overlay (item
①
) and separate it from the front dress panel.
2. From the front side of the front panel, pull off the overlay completely and discard it.
3. Remove any adhesive remaining on the front panel.
1. See