Installation Note N5247-90106 35
Installation Procedure for the Upgrade
Step 31. Install the A30 and A31 Reference Coupler Assemblies
Install the A30 and A31 reference coupler assemblies using three 0515-0372
screws to secure each bracket. For instructions, click the Chapter 7 bookmark,
“Removing and Replacing the A29-A32 Reference Couplers and Reference
Coupler Mounting Brackets” in the PDF Service Guide
1
. New parts are listed in
of this document.
Refer to
below for the location of the reference coupler assemblies.
Figure 21
Location of Attenuator Assemblies and Reference Coupler Assemblies
Step 32. Remove the Bias Tee Blocks From the Test Set Deck
Remove the two bias tee blocks from the test set deck. For instructions,
click
the Chapter 7 bookmark, “Removing and Replacing the A42-A45 Bias Tees” in
the PDF Service Guide
.
Keep all parts for reinstallation later.
Step 33. Install the A43 and A44 Bias Tees on the Bias Tee Blocks
Follow the instruction in
to install the A43 and A44 bias tees on the
bias tee blocks. New parts are listed in
1. See