52 Installation Note N5227-90118
Installation Procedure for the Upgrade
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Figure 30
Connect N5240-60097 from Port 1 A71 Bias Tee Combiner to BC1 on A70 LFE
Board (N5240-60091 (x1), N5240-60097 (x1), 1400-1334 (x1), and
1400-1391 (x1))
Step 19. Reinstall the A19 Test Set Motherboard
For instructions, click the Chapter 7 bookmark “Removing and Replacing the
A19 Test Set Motherboard” in the PDF Service Guide.
Step 20. Install the A71–74 Bias-Tee Combiner’s Blue Low Frequency
Extension (LFE) DC Bias Cables and Route Cables
This step contains the following sections:
—
“Install the A71, A72, A73, and A74 bias-Tee Combiner’s Gray Low
Frequency Extension (LFE) DC bias Cables”
—
“Route Cables As Shown” on page 55
“Port1” on LFE.
IMPORTANT!
Use the N5240-60089 ribbon cable from this kit in lieu of ribbon
cable N5242-60004. Refer to