Keysight N5231A Installation Note page 18

Installation Procedure for the Upgrade
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
page
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
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
Refer to
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
2. From the front side of the front panel, pull off the overlay completely and
3. Remove any adhesive remaining on the front panel.
IMPORTANT! To avoid possible damage to the lower front panel overlay,
do not attempt to attach the lower front panel label until
Option 200 License" on page
18
9.
attenuator
Figure 5 for this step of the procedure. Although a 4-port PNA is
Table 1 on page
the lower front dress panel to push on the old overlay (item
separate it from the front dress panel.
discard it.
1. See "Downloading the Online PNA Service Guide" on page
1
. New parts are listed in
9.
23.
Installation Note N5232-90101
Table 1 on
①
) and
"Step 16. Remove
7.