Front End Control Assembly; Removal - Keysight N8973B Service Manual

Assembly Replacement Procedures

Front End Control Assembly

Front End Control Assembly

Removal

1. Remove the instrument outer case. Refer to the
2. Remove the instrument top brace. Refer to the
3. Refer to
W22 will not be present on the N8973B.
N8976B will have the Enhanced Front End Control Assembly which will
have additional cables as shown in
4. The Front End Control assembly can now be unplugged from the
424
removal procedure.
procedure.
Figure 15-26. Remove the ribbon cables W16, W17, and W18 and
the wire harness W22 from the Front End Control assembly (1).
motherboard by leveraging up on the ejector and lifting the board up on
the other side.
Figure 15-27.
Keysight NFA Series Noise Figure Analyzers Service Guide
"Instrument Outer Case"
"Top Brace" removal