Removing And Replacing The Measurement Group Assemblies - Keysight N9912A Service Manual

Repair and Replacement Procedures

Removing and Replacing the Measurement Group Assemblies

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)
— 5/16-inch open-end torque wrench (set to 10 in-lb)
— 9/16-inch open-end torque wrench (set to 21 in-lb)
—
Before beginning any repair, remove the battery and disconnect
external power.
If the FieldFox serial number is below xx4910xxxx, and either the A5
System board or the RF assembly is being replaced, see Keysight Service
Note N9912A-03. It may be necessary to replace both assemblies at the
same time.
Removing All Measurement Group Assemblies as One Unit
3. Disconnect the A5 system board to A3 FPIB cable, W14, at the A3 FPIB
4. Lift the measurement group assemblies out of the front case and position
5. Disconnect the A2 LCD to A5 system board cable, W11, at the A5 system
6. The measurement group assemblies are now completely separated from
7. To remove the I/O panel, refer to
Keysight N9912A Service Guide
Repair and Re-assembly
a. Separate the front and rear cases. Refer to
and Rear Cases" on page
connector. If replacing this cable, disconnect both ends.
them to the side of the front case as shown.
board connector. It is necessary to first remove the adhesive tape that is
over the connector. To replace this cable, refer to
the LCD Shield, and LCD Cables" on page
the analyzer.
Gasket" on page 7-14.
Kit. Refer to "Miscellaneous Parts" on page
7-9.
7-22.
"Replacing the I/O Side Panel, Doors, and
6-12.
"Separating the Front
"Replacing the A2 LCD,
7-29