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Keysight Technologies FieldFox N9938A Service Guide

Keysight Technologies FieldFox N9938A
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136 Keysight FieldFox Handheld Analyzers Service Guide
Repair and Replacement Procedures
Removing and Replacing the Measurement Group Assemblies
7-
Removing and Replacing the Measurement Group Assemblies
Tools Required
T-8 TORX driver (set to 6 in-lb)
T-10 TORX driver (set to 9 in-lb)
—Small flat blade screwdriver
5/16-inch open-end torque wrench (set to 10 in-lb)
9/16-inch open-end torque wrench (set to 21 in-lb)
Repair and Re-assembly Kit. Refer to “Miscellaneous Parts” on page 103.
Removing All Measurement Group Assemblies as One Unit
1. Separate the front and rear cases. Refer to “Separating the Front and Rear
Cases” on page 115.
2. Refer to Figure 7-21. Disconnect the A5 System board to A3 FPIB cable,
W14, at the A3 FPIB connector using the small flat blade screwdriver. If
replacing this cable, disconnect both ends.
3. Lift the measurement group assemblies out of the front case and position
them to the side of the front case as shown.
4. Disconnect the A2 LCD to A5 System board cable, W11, at the A5 System
board connector. It is necessary to first remove the adhesive tape that is
over the connector. To replace this cable, refer to “Replacing the A2 LCD,
the LCD Shield, and LCD Cables” on page 132.
5. The measurement group assemblies are now completely separated from
the analyzer.
6. To remove the I/O panel, refer to “Replacing the I/O Side Panel, Doors, and
Gasket” on page 120.
Before beginning any repair, remove the battery and disconnect external power.

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Keysight Technologies FieldFox N9938A Specifications

General IconGeneral
BrandKeysight Technologies
ModelFieldFox N9938A
CategoryMeasuring Instruments
LanguageEnglish

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