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• W62 (reuse) (N5247-20111)Port 4 CPLR THRU to A44 port 4 bias tee
Install the Ribbon Cables and Wire Harnesses
Follow instructions carefully when making cable connections, especially wire harness
CAUTION
connections. Incorrect connections can destroy components, resulting in additional customer
costs.
To see an image showing the location of these cables, click the Chapter 6 bookmarks "Bottom Ribbon Cables
and Wire Harnesses, 4-Port, Option 419" in the PDF Service Guide
1. If not already done, connect step attenuator ribbon cables as follows:
• A38 port 1 source step attenuator to A23 test set motherboard J549
• A39 port 3 source step attenuator to A23 test set motherboard J547
• A40 port 4 source step attenuator to A23 test set motherboard J548
• A41 port 2 source step attenuator to A23 test set motherboard J546
• A46 port 1 receiver step attenuator to A23 test set motherboard J205
• A47 port 3 receiver step attenuator to A23 test set motherboard J206
• A48 port 4 receiver step attenuator to A23 test set motherboard J207
• A49 port 2 receiver step attenuator to A23 test set motherboard J208.
2. If not already done, connect bias tee cable harnesses as follows:
• A42 port 1 bias tee to A23 test set motherboard J541
• A43 port 3 bias tee to A23 test set motherboard J543
• A44 port 4 bias tee to A23 test set motherboard J544
• A45 port 2 bias tee to A23 test set motherboard J542
1. See
"Downloading the Online PNA Service Guide" on page
Installation Note N5247-90103
1
. New parts are listed in
5.
Table 1 on page
7.
29
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