Keysight Technologies N5221BU-4S7, Руководство пользователя

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26 Installation Note N5222-90133
Description of this Upgrade
Step 10. Reinstall Bottom Assemblies and Cables
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Step 10. Reinstall Bottom Assemblies and Cables
Carefully turn your instrument over so the bottom side is up.
This step contains the following sub-steps:
— “A. Reinstall the A20 IF Multiplexer Board” on page 26
— “B. Reinstall the A70 LFE Board (Options 405/420/425 Only)” on page 26
— “C. Reinstall the A19 Test Set Motherboard” on page 26
— “D. Reinstall the A34 and A42 Port 1 Attenuators” on page 26
— “E. Reinstall Some Bottom Cables” on page 27
A. Reinstall the A20 IF Multiplexer Board
Refer to your Service Guide’s "Removing and Replacing the A20 IF Multiplexer
Board" section. Reuse hardware that was set aside from removal step.
B. Reinstall the A70 LFE Board (Options 405/420/425 Only)
Refer to your Service Guide’s "Removing and Replacing the A70 or A75 Low
Frequency Extension (LFE) Board" section. Reuse hardware that was set aside
from removal step.
C. Reinstall the A19 Test Set Motherboard
Refer to your Service Guide’s "Removing and Replacing the A19 Test Set
Motherboard" section. Reuse hardware that was set aside from removal step.
D. Reinstall the A34 and A42 Port 1 Attenuators
Refer to your Service Guide’s "Removing and Replacing the A34–A37 Source
Attenuators, the A38–A41 Bias Tees, and the A42–A45 Receiver Attenuators"
section. Reuse all hardware that was set from removal step.