72 N9030B PXA Signal Analyzer Service Guide
Boot Up and Initialization Troubleshooting
Potential Problems During Boot Process
Verify Video Signal Path Integrity
The video controller is located on the A4 Processor assembly and is routed to
the front panel LCD through a few interconnections. These interconnections
are:
— A4 Processor assembly to A7 Midplane Board
— A7 Midplane Board to A8 Motherboard assembly
— A8 Motherboard assembly to A1A2 Front Panel Interface assembly via W1
ribbon cable
— A1A2 Front Panel Interface to A1A3 LCD via A1W1 flex-circuit
If all of these connections are properly made and none of the cables are
damaged proceed to “Video Controller / LCD Troubleshooting”.
Video Controller / LCD Troubleshooting
The video controller is located on the A4 Processor assembly. The video signals
that the controller outputs are LVDS. As described above, these signals are
routed to the LCD via the A7 Midplane Board, A8 Motherboard, and A1A2 Front
Panel Interface board.
On the A1A2 Front Panel Interface board the LVDS signals are buffered and
then sent to the LCD via the A1W1 Flex circuit.
The most likely cause for a video problem is the A4 Processor assembly;
however it could be the result of a defective LCD.
Initializations Did Not Complete
During the initialization of the PXA Signal Analyzer Application the following
messages will be displayed on the application splash screen:
— Checking for required services (1 of 7)
— Initializing License Services (2 of 7)
— Initializing Hardware (3 of 7)
— Initializing Data Services (4 of 7)
— Initializing SCPI Services (5 of 7)
— Initializing Message Services (6 of 7)
— Initializing Front Panel EEPROM Services (7 of 7)
If there is a problem with any of these initializations not completing or causing
an error message to be displayed refer to the instrument Event Log. This can
be accessed by using an external USB keyboard and mouse and selecting
Start, Run, enter Eventvwr.exe, and select OK.
Once the Event Viewer comes up, look under SA for the latest error entries.
Double-click on the entries to view further details, which should give you some
idea of what the problem is.
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