Installation Note N5225-90117
35
Description of the Upgrade
Installation Procedure for the Upgrade
Figure 20
Bulkhead Connections, Front Panel
Step 23.Reinstall the A23 Test Set Motherboard
For instructions on reinstalling the board, click the Chapter 7 bookmark
“Removing and Replacing the A23 test set motherboard” in the PDF Service
Guide1.
Step 24.Install Cable on the A23 Test Set Motherboard
If not already done in a previous step, install the following new ribbon cable. To
see an image showing the location, click the Chapter 6 bookmark “Bottom
Ribbon Cables and Wire Harnesses, 4-Port, Option 417” in the PDF Service
Guide
1
. New parts are listed in
Follow instructions carefully when making cable connections, especially
wire harness connections. Incorrect connections can destroy components,
resulting in additional customer costs.
1. See
