No Agilent Splash Screen Displayed - Keysight N9000A Service Manual

No Agilent Splash Screen Displayed

(Black background with white "Agilent Technologies" text)
A problem of not displaying the Agilent splash screen could be caused by many
different things. It could be due to a down power supply, a processor hardware
problem, an instrument boot-up process error, a display section failure, etc.
This procedure assumes that the green Power On LED on the front panel does turn
on when the instrument is turned on. If it doesn't, refer to the
LED Does Not Illuminate"
1. Remove the AC power cord and then remove the instrument cover. Refer to
Chapter 13, "Assembly Replacement Procedures," on page 225
2. Remove the MP7 Top Brace. Refer to
Procedures," on page 225
3. With the AC power applied and the On/Off button turned on, verify that all of
the power supply voltages are at their proper level. This can easily be done by
viewing the power supply LEDs on the back side of the A6 Midplane board.
See "Power Supply/Midplane Troubleshooting" on page 161
Are all of the power supply voltages at the proper level?
If yes:
Proceed to step 4.
If no:
After verifying that the connections between the A5 Power Supply, the A6
Midplane board, and the A7 Motherboard are all mechanically and
electrically secure, replace the A5 Power Supply assembly.
4. Connect an external VGA monitor to the rear panel display output.
Does the external monitor display the correct information?
If yes:
Proceed to the "Troubleshooting a Blank Display"
If no:
Replace the A3 CPU Board assembly.
Chapter 2
Boot Up and Initialization Troubleshooting
Potential Problems During Boot Process
section before proceeding.
Chapter 13, "Assembly Replacement
in this manual.
"Green Power On
in this manual.
of this manual.
section in this chapter.
55