4-6 Keysight N9912A Service Guide
Troubleshooting
Power Up Troubleshooting
4-
Power Up Troubleshooting
If the display is operational but the unit does not boot up successfully into CAT
mode:
— Make sure there is sufficient power for the unit to operate.
— Try re-installing firmware using the firmware upgrade process described in
Chapter 8.
— Assume corrupted firmware on the A6 SOM board, follow the “Install
Firmware from SD Card” near the end of Chapter 7.
If the display is dark but the unit may have booted successfully:
— Wait for two minutes to make sure the boot process has completed, then
press any front panel key.
If the boot process has completed successfully, the keypad will flash when
the key is pressed.
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