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2. Remove all bottom-side semirigid cables except for those in the table below. To see an image showing the
location of these cables, click the Chapter 6 bookmark "Bottom RF Cables, Standard 2-Port Configuration,
Option 200" in the PDF Service Guide
procedure.
Reference
a
Designator
Type
W3
SR
W9
SR
W45
SR
W46
SR
W47
SR
a. SR = semirigid coaxial cable.
3. 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.
Step 7.
Remove the A23 Mixer Brick Assembly
Remove the A23 mixer brick assembly from the PNA. For instructions, click the Chapter 7 bookmark, "Removing
and Replacing the A23 and A24 Mixer Bricks" in the PDF Service Guide
Step 8.
Assemble the A24 Mixer Brick and A22 Splitter
Refer to
Figure 1
in this document for this step. New parts are listed in
1. Install the A24 mixer brick (5087-7829) to the mounting block by hand-starting three screws (item
1410). Do not tighten.
2. Install two screws (item
3. Go back and torque the three screws (item
1. See
"Downloading the Online PNA Service Guide" on page
Installation Note N5242-90115
1
. Do not discard the cables because some will be reused later in the
Qty
Description
1
A5 source (1) to W4
1
A5 source (1) to W10
1
A5 source (1) to W46
1
W46 to rear-panel EXT TSET DRIVE RF OUT (J6)
1
A23 mixer brick to EXT TSET DRIVE LO OUT (J5)
➁
; 0515-0372) and torque to 9 in-lbs.
①
; 0515-1410) to 9 in-lbs.
1
.
Table 1 on page 8
6.
of this document.
①
; 0515-
13
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