88 S-Series Oscilloscopes Service Guide
5 Replacing Assemblies
5 Remove the two M3 screws connecting the rear cover and the BNC plate, near
the BNC. When replacing, torque the screws to 5 in-lbs.
6 Disconnect the two USB cables and the LVDS cable from the motherboard.
7 Disconnect the six cables connected to the acquisition board (main DC cable,
AC input cable, standby on/off cable, CPU power cable, hard disk power cable,
and PCIe cable).
8 Lift out the entire processor assembly.
Once the processor assembly has been removed, you can remove the acquisition
board, motherboard, or power supply.