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Chapter 4 99
Field Replaceable Units
FRU Removal and Replacement
3. Plug in the system unit power cord, and power on the system.
Left Side Panel of the System Unit
This section explains how to open and close the left side panel of the system unit. This side
panel will have to be opened whenever you need access to the internal components of the
workstation.
Opening the Left Side Panel of the System Unit
Perform these steps to open the left side panel.
WARNING
If you remove the left side panel while the workstation is running,
the safety interlock switch will power down the workstation. Be
aware that cutting off power to the workstation via the safety
interlock does not perform a clean shutdown of the workstation.
1. Turn the computer around so the rear is facing you. On the right edge of the computer,
there are two thumbscrews with slotted T-15 Torx heads as shown in Figure 4-6.
Remove the two thumbscrews.
2. Grasp the back edge of the left side panel and rotate it outward approximately 45
degrees to the computer. Next, pull the panel toward you as shown in Figure 4-6. This
releases the panel’s left side hook hinges from their hinge slots. See Figure 4-6.