Typical Instrument Boot-Up Process Flow - Keysight N8973B Service Manual

Boot Up and Initialization Troubleshooting
Instrument Boot Up Process

Typical instrument boot-up process flow

1. Plug in the AC power cord from a known good AC power source into the
2. The yellow standby LED illuminates on the analyzer front panel to the
3. To turn the analyzer on, press the On/Off button. The yellow Standby LED
If the analyzer AC power source was removed by the operator by pulling
the power cord or by turning off the analyzer via a power main switch on a
test rack, the analyzer will automatically power on without having to press
the On/Off button on the front panel when power is restored.
4. The instrument fans should start running. The fans are mounted on the
5. The Keysight Technologies splash screen is displayed in white font on a
6. Verify text is displayed on screen where the user has the option of booting
Keysight NFA Series Noise Figure Analyzers Service Guide
rear panel of the analyzer.
right-hand side of the On/Off button. If the yellow Standby LED is not
illuminating refer to the
in this chapter.
should turn off and the green Power On LED should illuminate. A green
Power On LED indicates that the power supply has received an "On"
command from the A4 CPU assembly. If the green Power On LED is not
illuminating refer to the
section in this chapter.
left-hand side of the analyzer and draw air into the instrument to cool the
internal circuitry. If a fan is not running refer to the
Operating" section in this chapter.
dark background for ~5-10 seconds after the analyzer is turned on. If the
Keysight Technologies logo is not displayed refer to the
Splash Screen Displayed"
at the Keysight Technologies splash screen refer to the
at the Keysight Splash Screen"
Windows 7 FES or running the Instrument Recovery System. The default
selection is to boot Windows 7 FES. If a recovery is required, press the
Down Arrow key on the front panel of the analyzer within 5 seconds to
highlight "Instrument Recovery System" and press the Enter key on the
analyzer, otherwise Windows 7 FES will begin to boot. If the Windows 7
FES boot screen is not displayed within a few seconds refer to the
"Instrument Cannot Completely Load or Run the Operating System"
section in this chapter.
"Yellow Standby LED Does Not Illuminate"
"Green Power On LED Does Not Illuminate"
section in this chapter. If the instrument hangs
section in this chapter.
section
"Fan(s) Are Not
"No Keysight
"Instrument Hangs
49