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Description of the Upgrade
Installation Procedure for the Upgrade
Step 17.Reinstall the A19 Test Set Motherboard
Follow instructions carefully when making cable connections, especially
wire harness connections. Incorrect connections can destroy components,
resulting in additional customer costs.
1. For instructions, click the Chapter 7 bookmark "Removing and Replacing
2. Connect new ribbon cable N5242-60006 from J213 to A24 mixer brick (2).
Step 18.Disassemble the 2-Port Front Panel and Assemble the 4-Port
Front Panel
Before the front frame can be replaced, the items making up the back side of
the front panel assembly must be removed. For instructions on removing these
items, click the Chapter 7 bookmark "Removing and Replacing the A1-A3 and
Other Front Panel Subassemblies" in the PDF Service Guide
listed in
1. In the section "Removing the A2 USB Board," perform step 1 (the only
28
— W40 (reuse) (N5242-20049) REF 2 RCVR R2 IN to A23 mixer brick
(R2)
— W43 (N5222-20007) A22 splitter to A23 mixer brick
* Leave the W43 loose for now.
— W44 (N5222-20008) A22 splitter to A24 mixer brick
* Leave the W44 loose for now.
— W42 (N5222-20009) A21 HMA26.5 to A22 splitter
* Leave the W42 loose for now.
* Tighten 2x screws on A22 splitter @ 9 in-lbs.
* Tighten cable nuts on W42, W43, and W44 @10 in-lbs.
— W41 (reuse) (N5242-20110) A11 13.5 GHz synthesizer to A21
HMA26.5
* Route cable through deck cutout to A11 synthesizer board.
— W60 (N5242-60013) A20 IF multiplexer (P203) to A12 SPAM (J2)
— W62 (N5242-60015) A20 IF multiplexer (P603) to A12 SPAM (J5)
the A19 Test Set Motherboard" in the PDF Service Guide
To see an image showing the location of the cable, click the Chapter 6
bookmark "Bottom Ribbon Cables and Wire Harnesses, Standard 4-Port
Configuration, Option 400" in the PDF Service Guide
Table 1 on page
step).
"Downloading the Online PNA Service Guide" on page 6
1. See
8.
1
.
1
.
1
. New parts are
.
Installation Note N5242-90015
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