Keysight N5221A Service Manual page 262

Repair and Replacement Procedures
Removing and Replacing the A1–A3 and Other Front Panel Subassemblies
Removing the A3 Display Assembly and the Touchscreen
1. Disconnect the following cables from the A1 front panel interface board: display cable (item
➁
board cable (item ), touchscreen controller board cable (item
2. Remove six screws (item
front panel assembly.
3. The touch screen can now be removed from the front panel assembly. Note the orientation of the touch
screen in the front panel assembly for installation of the new touch screen.
To replace the touch screen, note the orientation of the rubber boot on the old touch screen and then
remove it and install it on the new one in the same orientation.
Figure 7-4 A3 Display Assembly and Touch Screen Removal
7-12
⑤
) from the A3 display assembly and remove the A3 display assembly from the
PNA Series Microwave Network Analyzers
③
), and power switch cable (item
Service Guide N5222-90001
N5221A/22A
①
), inverter
④
).