422 Keysight CXG, EXG, and MXG X-Series Signal Generators Service Guide
Pre and Post-Repair Procedures
Additional Tasks
When an A5 CPU assembly is replaced the following error messages will be
displayed until the licenses are restored:
617 Configuration Error: The instrument has no frequency range option
installed. Use the service procedure to recover instrument licenses from the
backup.
617 Configuration Error: The backup memory contains license keys for
serial number <serial number>. Use the service procedure to overwrite the
backup memory.
The following procedure will restore the instrument licenses from the backup
location on the A3 RF assembly to the A5 CPU non-volatile memory:
1. Turn the instrument off by using the front panel power button.
2. Once the instrument has turned off press and hold the front panel Preset
key.
3. While holding the Preset key, press and release the power button to turn
the instrument back on.
4. Continue to hold the Preset key for 10 seconds after pressing the power
button, then release it.
5. After approximately 30 seconds the boot Service Menu will appear, as
shown in Figure 16-3.
Figure 16-3 Service Boot Screen
6. Using the front panel arrow keys scroll down to Start main firmware
service menu and press Select.
7. When the service menu warning screen is displayed press Continue.
8. On the main firmware service menu select Next page until a selection for
Restore license data from backup is available.
9. Select Restore license data from backup as shown in Figure 16-4, and
then select Done.
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