No Keysight Splash Screen Displayed - Keysight N9040B Option 508 Service Manual

Boot Up and Initialization Troubleshooting
Potential Problems During Boot Process

No Keysight Splash Screen Displayed

(Black background with white "Keysight Technologies" text)
A problem of not displaying the Keysight 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
Power On LED Does Not Illuminate"
1. Remove the AC power cord and then remove the instrument cover. Refer
2. Remove the Top Brace. Refer to
3. With the AC power applied and the On/Off button turned on, verify that all
60
to Chapter 15, "Assembly Replacement Procedures", on page 347
manual.
Procedures", on page 347
of the power supply voltages that can be measured are at their proper
level. This can easily be done by viewing the power supply LEDs on the
back side of the A7 Midplane board. Refer to the
Assembly Troubleshooting" on page
Keysight Technologies N9040B UXA Signal Analyzer Service Guide
section before proceeding.
Chapter 15, "Assembly Replacement
in this manual.
233.
"Green
in this
"A7 Midplane Board