Front Panel Troubleshooting; Front Panel Keypad And Rpg Test - Keysight N5227A Service Manual

PNA Series Microwave Network Analyzers
N5227A

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
Refer to the following sections to verify the operation of the noted assemblies.
•

"Front Panel Keypad and RPG Test"

• "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
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
System
A
Front Panel Key Test Utility
Figure 4-4 Front Panel Key Test Utility Dialog Box
Service Guide N5227-90001
"Power Up Troubleshooting" on page
on this page
Service More
, then , then
dialog box will be displayed, as shown in
4-6.
"Rear Panel Troubleshooting" on
Front Panel Test
, then
Figure 4-4.
Troubleshooting
Front Panel Troubleshooting
.
4-13