Agilent Technologies Infiniium 90000 A Service Manual page 106

Chapter 5: Replacing Assemblies
To remove and replace the touch screen, the front deck, and the controller assembly
Figure 5-26
You can now remove the controller board and backlight inverter board from the back
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of the front deck if these need to be replaced by removing the Torx T20 screws attached
to them.
To reassemble the front deck and touch screen, reverse the above procedure.
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Note: Before reattaching the front deck to the frame, attach the touch screen to the front deck.
This gives you some room to feed cables through the correct holes and attach them to the correct
boards. When reattaching the SMA cables, use an 8 lb. torque wrench as shown in Figure 5-27
Figure 5-27
C A U T I O N
PREVENT GLASS BREAKAGE!
Use care when handling the touch screen and the flat-panel display to prevent glass breakage.
Inspect the inside surfaces of the touch screen and the flat-panel display closely for dust,
smudges, and fingerprints. Viewing these with line-of-sight 45 degrees to the surface is the best
method for seeing subtle flaws. Clean the surfaces of the touch screen with glass cleaner and
lint-free lens paper before re-assembly.
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