Agilent Technologies N5242A, Service Manual

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Service Guide N5242-90001 4-13
PNA Series Microwave Network Analyzers Troubleshooting
N5242A Front Panel Troubleshooting
Front Panel Troubleshooting
The front panel assembly consists of the A1 front panel interface board, the keypad, the
A2 USB board, and the A3 display assembly. The following tests verify the operation of the
front panel assembly when the analyzer is in the measurement mode. If the instrument
fails to power up correctly, or it is difficult to verify due to a faulty display, refer to
“Power
Up Troubleshooting” on page 4-6 .
Refer to the following sections to verify the operation of the noted assemblies.
• “Front Panel Keypad and RPG Test” on this page
• “A3 Display Test” on page 4-15
• “Checking the A2 USB Board” on page 4-16
• “A1 Front Panel Interface Board” on page 4-16
If all assemblies are working correctly, continue troubleshooting with “Rear Panel
Troubleshooting” on page 4-17 .
Front Panel Keypad and RPG Test
Test the front panel keypad by running the front panel test. To run the front panel test,
perform the following:
Press UTILITY , then , then , then .
A
Front Panel Key Test Utility
dialog box will be displayed, as shown in Figure 4-4 .
Figure 4-4 Front Panel Key Test Utility Dialog Box
System
Service More Front Panel Test