Instrument Cannot Completely Load Or Run The Operating System; Troubleshooting A Blank Display - Keysight N8973B Service Manual

Boot Up and Initialization Troubleshooting
Potential Problems During Boot Process
Instrument Cannot Completely Load or Run the
Operating System
A problem of the instrument not loading the operating system can be caused
by a few different things. It could be due to a down power supply, a processor
hardware problem, an instrument boot-up process error, corrupt hard drive,
etc.
This procedure assumes that the instrument can get past the Keysight splash
screen at power on. If it doesn't, refer to the
Splash Screen"
1. Verify that there are no external USB storage devices connected to the
2. Does the instrument get far enough along in the boot process to run the
If yes:
If no:

Troubleshooting a Blank Display

This section is intended to troubleshoot a display system problem that would
cause the internal LCD to be blank. It is assumed that the rest of the
instrument is booting up and functioning properly. To determine if the problem
is an internal display issue only, connect an external VGA monitor to the rear
panel display output. If the rear panel display output is also not working go to
the
Once it has been determined that the rest of the instrument appears to be
functioning properly there are a few possible problems that could be causing
the display to be blank. They are:
— An LCD Backlight problem
— A video signal path integrity problem
— A video controller / LCD problem
60
section before proceeding.
instrument.
"Keysight Recovery System"?
Run the "Keysight Recovery System" by referring to the
Recovery Process" on page
replace the A5 Hard Disk Drive.
Replace the A5 Hard Disk Drive.
"No Keysight Splash Screen Displayed"
"Instrument Hangs at the Keysight
300. If this does not correct the problem
section in this chapter.
Keysight NFA Series Noise Figure Analyzers Service Guide
"Disk Drive