Keysight Technologies N5224BU-601, Installation Note, Page: 14 / 44

14 Installation Note N5225-90117
Description of the Upgrade
Installation Procedure for the Upgrade
-
Step 3.Remove the Inner Cover
For instructions, click the Chapter 7 bookmark “Removing the Covers” in the
PDF Service Guide
1 .
Step 4.Remove the Front Panel Assembly
For instructions, click the Chapter 7 bookmark “Removing and Replacing the
Front Panel Assembly” in the PDF Service Guide
1 .
Step 5. Remove the A23 Test Set Motherboard
For instructions, click the Chapter 7 bookmark “Removing and Replacing the
A23 test set motherboard” in the PDF Service Guide
1 .
Step 6.Remove Some Bottom-Side (Test Set) Cables
1. Place the analyzer bottom-side up on a flat surface.
2. Remove the following cables. To see an image showing the location of
these cables, click the Chapter 6 bookmark “Bottom RF Cables, Standard
2-Port Configuration, Option 201” in the PDF Service Guide
1
.
These cables may be discarded - they will not be reinstalled.
— W20 (N5245-20045) Front panel port 1 CPLR THRU to A33 port 1
coupler
— W21 (N5245-20120 A29 port 1 receiver coupler to A37 reference mixer
switch
— W22 (N5245-20025) A33 port 1 coupler to front-panel REF 1 CPLR
ARM
— W32 (N5245-20106) Front panel port 2 CPLR THRU to A36 port 2
coupler
— W34 (N5245-20024) A36 port 2 coupler to front-panel REF 2 CPLR
ARM
— W35 (N5245-20121) A32 port 2 receiver coupler to front-panel REF 2
SOURCE OUT
1. See “Downloading the Online PNA Service Guide” on page 6 .
Be careful not to damage the center pins of the semirigid cables. Some
flexing of the cables may be necessary but do not over-bend them.
When removing a cable, also remove the plastic cable clamp, if present. It
is normal for some of the cable clamp’s adhesive to remain.
1. See “Downloading the Online PNA Service Guide” on page 6 .