14-24 Chapter 14
Assembly Replacement and Post-Repair Procedures
A9 CPU Board
A9 CPU Board
Tools Required
• T-10 TORX screwdriver
• T-15 TORX screwdriver
• ESD (electrostatic discharge) grounding wrist strap
Removal
1. Disconnect the power cord.
2. Remove the top and bottom covers (refer to “Covers” on page 14-6).
3. Remove the rear panel assembly, following steps 2 through 6 of “Rear Panel Assembly”
on page 14-14.
4. Turn the analyzer upside down.
5. Pull the rear panel away from the frame as shown in Figure 14-11.
6. Disconnect the four ribbon cables (W20, W35, W36, and W37) from the CPU board (A9).
7. Remove the three screws (item 2) that secure the CPU board (A9) to the deck. Slide the
board towards the front of the instrument so that it disengages from the three standoffs
(item 3).
8. Lift the board off of the standoffs.
Replacement
1. Reverse the order of the removal procedure.
2. Leave the bottom cover off in order to perform the post repair procedures located at the
end of this chapter.
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