Keysight NFA Series Noise Figure Analyzers Service Guide
55
Boot Up and Initialization Troubleshooting
Potential Problems During Boot Process
Figure 2-4
A7 Midplane Board - R867
5.
While monitoring the voltage at R867, turn the instrument power on by
pressing the front panel On/Off button.
Does the voltage at R867 measure 0 VDC?
If yes:
Proceed to
.
If no:
After verifying that the connections from the front panel On/Off
button back to the A4 CPU board are not at fault, replace the A4
CPU board.
6.
Do all of the green power supply LEDs along the top of the A7 Midplane
board come on?
If yes:
After verifying that the connections from the front panel On/Off
button back to the A4 CPU board are not at fault, replace the A4
CPU board.
If no:
Replace the A6 Power Supply assembly.
Before replacing the power supply, verify the midplane and motherboard
interconnects are mechanically secure.
Содержание N8973B
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Страница 44: ...44 Keysight NFA Series Noise Figure Analyzers Service Guide Overview How to Return Your Instrument for Service ...
Страница 132: ...132 Keysight NFA Series Noise Figure Analyzers Service Guide Instrument Messages Condition Messages ...
Страница 228: ...228 Keysight NFA Series Noise Figure Analyzers Service Guide RF Section Troubleshooting N8976B Troubleshooting ...
Страница 268: ...268 Keysight NFA Series Noise Figure Analyzers Service Guide Analog Digital IF Troubleshooting 25 MHz BW IF Section ...
Страница 322: ...322 Keysight NFA Series Noise Figure Analyzers Service Guide Block Diagrams Block Diagrams Block Diagrams ...
Страница 332: ...332 Keysight NFA Series Noise Figure Analyzers Service Guide Block Diagrams Block Diagrams NFA Computer Block Diagram ...
Страница 350: ...350 Keysight NFA Series Noise Figure Analyzers Service Guide Service and Diagnostics Menus Front Panel Key Test ...
Страница 470: ...470 Keysight NFA Series Noise Figure Analyzers Service Guide Assembly Replacement Procedures Front Frame Assembly ...