Keysight Technologies N5221BU-4S7, Руководство пользователя

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12 Installation Note N5222-90133
Description of this Upgrade
Step 3. Remove Most Top Assemblies and Cables
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3. These cables may be discarded - they will not be reinstalled.
Remove one end of W41. The other end is disconnected in the
“Step 3.
Remove Most Top Assemblies and Cables” on page 12 .
— W41 (N5222-20067) A11 13.5 GHz (LO) synthesizer board J1207 to
A21 HMA26.5
Step 3. Remove Most Top Assemblies and Cables
Carefully turn the PNA so it is top-side up for this step.
This step contains the following sub-steps:
— “A. Remove the A4–A13 Boards” on page 12
— “B. Remove the 15 Midplane Board” on page 13
— “C. Remove the A16 Power Supply” on page 13
— “D. Remove the A17 CPU Board” on page 13
— “E. Remove the Rear Panel” on page 13
— “F. Remove the A18 GPIB Board” on page 13
A. Remove the A4–A13 Boards
For N5221/2B, refer to your Service Guide’s "Removing and Replacing the
A4–13 Boards" section. For N5241/2/9B, refer to your Service Guide’s
"Removing and Replacing the A4–13 Boards (For analyzers with serial numbers
prefixed MY/SG/US5201 and above)" section. Set aside all hardware for reuse.
Exceptions (See also, note below):
The following cables are not reused:
— W1 (N5222-20066) A4 13.5 GHz synthesizer board (source) (1) J1207 to A5
26.5 GHz source (1) board P1
— W2 (N5222-20090) A17 13.5 GHz source (2) synthesizer J1207 to A10
source (2) P1.
This same W41 reference designator is assigned to the S7 upgrade cable
N5240-20122.
IMPORTANT! A4 13.5 GHz source 1 synthesizer, A10 frequency reference,
A11 13.5 GHz (LO) synthesizer, and A13 13.5 GHz source 2 synthesizer
boards will not be reused. Set these aside as spares for your other PNAs or
recycle.