Installation Note N5222-90131 71
Description of the Upgrade
Installation Procedure for the Upgrade
Step 39. 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 420, S/N Prefixes ≥6021” in the PDF Service Guide
1
. New parts are
listed in Table 2 on page 11.
— (reuse) N5242-60006 A19 test set motherboard J212 to A23 mixer brick (1)
— N5242-60006 A19 test set motherboard J213 to A24 mixer brick (2)
— 8121-0982 A19 test set motherboard J206 to A43 port 3 receiver
attenuator
— 8121-0982 A19 test set motherboard J207 to A44 port 4 receiver
attenuator
— N5242-60008 A19 test set motherboard J202 to A35 port 3 source
attenuator
— N5242-60008 A19 test set motherboard J203 to A36 port 4 source
attenuator
For more A19 cable connections, refer to “Step 40. Install/Reinstall the
A71–74 Bias-Tee combiner’s Gray Low Frequency Extension (LFE) DC Bias
Cables and Route Cables” on page 72.
Follow instructions carefully when making cable connections, especially
wire harness connections. Incorrect connections can destroy components,
resulting in additional customer costs.
1. See “Downloading the Online PNA Service Guide” on page 8.
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