Keysight N5221A/22A Service Guide 7-11
Repair and Replacement Procedures
Removing and Replacing the A1–A3 and Other Front Panel Subassemblies
1. Disconnect the touchscreen controller board cable (item ④) from the
touchscreen controller board and front panel interface board.
2. Disconnect the flat flex cable from the touchscreen.
3. Remove two screws (item
⑩) and remove the touchscreen controller
board.
Removing the Power Switch Board and Power Button Keypad
1. Disconnect the power switch cable (item ⑤) from the power switch board.
2. Remove two screws (item
⑩) and remove the power switch board.
3. The power button keypad can now be removed from the power switch
board by gently pulling each of the rubber tabs through the PC board.
Figure 7-3 Front Panel Subassemblies Removal
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