Installation Note N5245-90113 37
Description of the Upgrade
Installation Procedure for the Upgrade
Figure 16
Bulkhead Cmonnections, Front Panel
Step 28. Reinstall the A23 Test Set Motherboard
1.
For instructions on reinstalling the board, click the Chapter 7 bookmark
“Removing and Replacing the A23 test set motherboard” in the PDF
Service Guide
2.
If not already done in a previous step, install the following new ribbon
cables in the order listed. To see an image showing the location of these
cables, click the Chapter 6 bookmark “Bottom Ribbon Cables and Wire
Harnesses, 4-Port, Option 419” in the PDF Service Guide
1
. New parts are
listed in
.
—
Ribbon cable, N5247-60015 from A23 test set motherboard J552 to
A28 mixer brick (2) J52
1. See