42 Installation Note N5222-90129
Installation Procedure for the Upgrade
-
— W202 (N5222-20126) RF cable, A24 mixer brick (top connector) to A21
HMA25.6 A24 mixer brick (top connector)
See also,
“Verify the Model/Version of HMA26.5 Installed” on page 7
If your instrument has a legacy HMA26.5 (5087-7765) installed:
If you have a new HMA26.5 (N5240-60101) installed, you can discard these
cables.
— W42 (N5222-20009) A21 HMA26.5 to A22 splitter
NOTE: Tighten both screws on the splitter to 9 in-lbs.
— W44 (N5222-20008) A22 splitter to A24 mixer brick
— W43 (N5222-20007) A22 splitter to A23 mixer brick
See also,
“Verify the Model/Version of HMA26.5 Installed” on page 7
Step 23. Reinstall the A19 Test Set Motherboard
For instructions on reinstalling the board, click the Chapter 7 bookmark
“Removing and Replacing the A19 test set motherboard” in the PDF Service
Guide
Step 24. Install Cables on the A19 Test Set Motherboard
Install the following ribbon cables. To see an image showing its locations, click
the Chapter 6 bookmark “Bottom Ribbon Cables and Wire Harnesses, 4-Port,
Option 417, S/N Prefix
≥
6021” in the PDF Service Guide
1
. New parts are listed
— (reuse) N5242-60006 A19 test set motherboard J212 to A23 mixer brick (1)
– You will need to remove the cap that is installed on the HMA26.5 top
connector, before connecting the other end of the W202 cable. You can
discard the cap.
– When a A22 splitter is not mounted on the A23/A24 mixer bricks, W202
replaces W42 and W44.
Follow instructions carefully when making cable connections, especially
wire harness connections. Incorrect connections can destroy components,
resulting in additional customer costs.
1. See