Keysight N5224B Installation Manual page 17

Description of the Upgrade
Installation Procedure for the Upgrade
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
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
Step 6. Remove Some Bottom-Side (Test Set) Cables
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.
Leave the gray flexible cables, the wire harnesses, and the ribbon cables
connected where possible. Any that are removed should be labeled for
reconnection later.
Remove and save the cable guards for the front panel jumpers.
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. 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 may be discarded - they will not be reinstalled.
— W80 (N5245-20048) A25 HMA26.5 to A27 mixer brick
Installation Note N5225-90136
these cables, click the Chapter 6 bookmark "Bottom RF Cables, Standard
2-Port Configuration, Option 200, S/N Prefixes ≥6021" in the PDF Service
Guide 1 .
— W62 (N5242-60025) A27 mixer brick (R1) to A24 IF multiplexer (P601)
— W63 (N5242-60026) A27 mixer brick (R2) to A24 IF multiplexer (P801)
— W150 (N5247-60024) A24 IF multiplexer board P203 to A16
SPAM board J5
— W149 (N5247-60023) A24 IF multiplexer board P603 to A16
SPAM board J2
— W110 (N5224-20006) A32 port 2 receiver coupler to A27 mixer brick
(R2)
— W111 (N5224-60012) A29 port 1 receiver coupler to A33 port 1 coupler
— W114 (N5224-20011) A32 port 2 receiver coupler to A36 port 2 coupler
— W115 (N5224-20010) A33 port 1 coupler to A27 mixer brick (A)
— W118 (N5224-20009) A36 port 2 coupler to A27 mixer brick (B)
1 .
1 .
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