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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 A19 Test Set Motherboard
For instructions, click the Chapter 7 bookmark "Removing and Replacing the
A19 Test Set Motherboard" in the PDF Service Guide
Step 6.Remove Some Existing Semi-rigid Test Set Cables
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.
Be careful not to damage the center pins of the semi-rigid cables. Some
flexing of the cables may be necessary but do not over-bend them.
1. Place the analyzer bottom-side up on a flat surface.
2. Remove all bottom-side semi-rigid cables except for those in the table
3. Leave the gray flexible cables, the wire harnesses, and the ribbon cables
Installation Note N5242-90122
below. To see an image showing the location of these cables, click the
Chapter 6 bookmark "Bottom RF Cables, 2-Port, Option 217" in the PDF
Service Guide
1
. Do not discard the cables because some will be reused
later in the procedure.
Reference
Qty
a
Type
Designator
W3
SR
1
W9
SR
1
W45
SR
1
Option 029A only:
W131
SR
1
W141
SR
1
W143
SR
1
a. SR = semirigid coaxial cable.
connected where possible. Any that are removed should be labeled for
reconnection later.
1
.
Description
A5 source (1) to W4
A5 source (1) to W10
A5 source (1) to W46
Adapter, coax, straight, m-m, 50 ohm
A55 noise downconverter to A7 noise receiver board LO
A55 noise downconverter to A7 noise receiver board RF
1
.
15
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