N9030B PXA Signal Analyzer Service Guide 59
Boot Up and Initialization Troubleshooting
Potential Problems During Boot Process
Green Power On LED Does Not Illuminate
Control of the green front panel Power On LED comes from the A4 Processor
board assembly. This signal is routed through the A7 Midplane board and is
then buffered on the A8 Motherboard before being sent to the A1A2 Front
Panel Interface board through W1. Of course, the power for this all originates
with the A6 Power Supply Assembly. When the Power On LED does not come
on it could be due to any one of these assemblies. This procedure will help to
determine which one is the cause.
This procedure assumes that the yellow Standby LED does turn on when the
AC power is connected to the rear panel of the instrument. If it doesn't, refer to
“Yellow Standby LED Does Not Illuminate”
section before proceeding.
If the instrument turns on and operates properly but the green Power On LED
does not work then all that will need to be done is to trace where the control
signal for the LED is being lost using the routing information in the preceding
paragraph.
1.
The Power On LED will only turn on when the instrument is connected to
an AC power source that has a voltage level and frequency of that
specified for the instrument and the front panel On/Off button has been
pressed. Before proceeding verify that these requirements are being met.
Refer to the instrument rear panel for these requirements.
2.
Remove the AC power cord and then remove the instrument cover. Refer
Chapter 16, “Assembly Replacement Procedures”, on page 429
in this
manual.
3.
Remove the Top Brace. Refer to
Chapter 16, “Assembly Replacement
in this manual.
4.
With AC power connected to the rear of the instrument but without
turning it on, leaving it in standby mode, measure the voltage at Test Point
518 (POWER_ON_L) of the A7 Midplane board assembly. See
for Test Point 518 location.
Does the voltage at Test Point 518 measure 5 VDC?
If yes:
Proceed to
.
If not:
Replace the A6 Power Supply assembly.
Before replacing the power supply, verify the midplane and motherboard
interconnects are mechanically secure.
Содержание N9030B
Страница 4: ...4 ...
Страница 14: ...14 N9030B PXA Signal Analyzer Service Guide Contents ...
Страница 172: ...172 N9030B PXA Signal Analyzer Service Guide RF Section Troubleshooting RF Microwave Analyzers Troubleshooting ...
Страница 198: ...198 N9030B PXA Signal Analyzer Service Guide RF Section Troubleshooting Millimeter Wave Analyzers Troubleshooting ...
Страница 248: ...248 N9030B PXA Signal Analyzer Service Guide Analog Digital IF Troubleshooting A3 Digital IF Troubleshooting ...
Страница 298: ...298 N9030B PXA Signal Analyzer Service Guide CPU Disk Drive Troubleshooting Disk Drive Recovery Process ...
Страница 320: ...320 N9030B PXA Signal Analyzer Service Guide Front Panel Motherboard Troubleshooting A1 Front Panel Assembly ...
Страница 342: ...342 N9030B PXA Signal Analyzer Service Guide Hardware Options Option RTS Streaming ...
Страница 344: ...344 N9030B PXA Signal Analyzer Service Guide Block Diagrams Block Diagrams Block Diagrams ...
Страница 356: ...356 N9030B PXA Signal Analyzer Service Guide Block Diagrams Block Diagrams Analog IF Block Diagram ...
Страница 357: ...N9030B PXA Signal Analyzer Service Guide 357 Block Diagrams Block Diagrams Digital IF Block Diagram ...
Страница 358: ...358 N9030B PXA Signal Analyzer Service Guide Block Diagrams Block Diagrams PXA Computer Block Diagram ...
Страница 402: ...402 N9030B PXA Signal Analyzer Service Guide Replaceable Parts Hardware Figure 15 6 RF Area Options 503 508 513 526 ...
Страница 404: ...404 N9030B PXA Signal Analyzer Service Guide Replaceable Parts Hardware Figure 15 7 RF Area Options 544 550 ...
Страница 418: ...418 N9030B PXA Signal Analyzer Service Guide Replaceable Parts Hardware Figure 15 17 AIF Cables Figure 15 18 DIF Cables ...
Страница 427: ...N9030B PXA Signal Analyzer Service Guide 427 Replaceable Parts Hardware Figure 15 26 Front Frame Exploded View ...
Страница 522: ...522 N9030B PXA Signal Analyzer Service Guide Assembly Replacement Procedures AIF DIF Assembly Figure 16 85 AIF Cables ...
Страница 572: ...572 N9030B PXA Signal Analyzer Service Guide Post Repair Procedures Post Repair Procedures ...
Страница 608: ...608 N9030B PXA Signal Analyzer Service Guide Functional Tests BBIQ Input Frequency Response Option BBA only ...
Страница 612: ...612 N9030B PXA Signal Analyzer Service Guide Instrument Software Software Updates ...