Keysight N8973B User Manual

Keysight NFA Series Noise Figure Analyzers Service Guide 447
Assembly Replacement Procedures
Motherboard Assembly
Motherboard Assembly
Removal
1. Remove the instrument outer case. Refer to the “Instrument Outer Case”
removal procedure.
2. Remove the rear panel. Refer to the “Rear Panel” removal procedure.
3. Remove the top brace and reference bracket. Refer to the “Top Brace”
removal procedure.
4. Remove the reference assembly. Refer to the “Reference Assembly”
removal procedure.
5. Remove the CPU assembly. Refer to the “CPU Assembly” removal
procedure.
6. Remove the power supply assembly. Refer to the “Power Supply
Assembly” removal procedure.
7. Remove the AIF/DIF assembly. Refer to the “Analog I.F. (AIF)/Digital I.F.
(DIF) Assembly” removal procedure.
8. Remove the Front End Control assembly. Refer to the “Front End Control
Assembly” removal procedure.
9. Remove the L.O. Synthesizer assembly. Refer to the “L.O. Synthesizer
Assembly” removal procedure.
10.Remove the Midplane assembly. Refer to the “Midplane Assembly”
removal procedure.
11.Remove the Front Frame Assembly. Refer to the “Front Frame Assembly”
removal procedure.
12.Remove the RF bracket. Refer to Figure 15-8 on page 400.
13.Remove the fan assembly. Refer to the “Fan Assembly” removal
procedure.
14.Refer to Figure 15-44 and Figure 15-45. Remove the midplane bracket (1)
by removing the eight screws (2) (two on each side and four on the
bottom).

Keysight N8973B Specifications

General

Brand	Keysight
Model	N8973B
Category	Measuring Instruments
Language	English