Removing And Replacing The A23 Test Set Motherboard - Keysight Technologies N5224/5A Service Manual

Repair and Replacement Procedures

Removing and Replacing the A23 Test Set Motherboard

Removing and Replacing the A23 Test Set Motherboard
Before replacing the A23 test set motherboard, if possible:
Run EEBackup.exe using the directory for your Windows operating system:
Windows 7 OS:
C:/Program Files (x86)/Agilent/Network Analyzer/Service/EEBackup.exe.
Click on Save EEPROM Backup, and then click on Backup TSMB Memory.
Windows 10 OS (32-bit):
C:/Program Files (x86)/Keysight/Network Analyzer/Service/EEBackup.exe.
Click on Save EEPROM Backup, and then click on Backup TSMB Memory.
The firmware revision numbers for Win10 (32-bit) are A.13.30.xx through
A.13.95.xx.
Windows 10 OS (64-bit):
C:/Program Files/Keysight/Network Analyzer/Service/EEBackup.exe. Click
on Save EEPROM Backup, and then click on Backup TSMB Memory.
The firmware revision numbers for Win10 (64-bit) are A.14.00.xx and up.
If it is not possible to back up the EEPROMs and the TSMB Memory, the
data files might not be the most current. In this case, the backup data will
contain the original factory information. If you have problems,
Keysight" on page
Tools Required
— T-10 TORX driver (torque to 9 in-lb or 1.02 N.m)
— T-20 TORX driver (torque to 21 in-lb or 2.38 N.m)
— 5/16 inch open-end torque wrench (torque to 10 in-lb or 1.13 N.m)
— 5/8 inch nutsetter (torque to 21 in-lb)
— ESD grounding wrist strap
Removal Procedure
Refer to
1. Disconnect the power cord.
2. Remove the outer cover. Refer to
3. Position the analyzer bottom side up.
4. Disconnect ALL ribbon cables (item
5. Remove connector hardware (item
6. Remove 10 screws (item
Keysight N5224A/25A Service Guide
2-7.
Figure 7-12 for this procedure.
from the A23 test set motherboard.
connectors.
"Removing the Covers" on page

) and ALL wire harnesses (item

) from 11 rear panel BNC

) from the A23 test set motherboard.
"Contacting
7-7.

)
7-29