Replacing a system processor module in the 8335-GTC, 8335-GTG, or 8335-GTH system

To replace a system processor module, complete the steps in this procedure.

1. Ensure that you have the electrostatic discharge (ESD) wrist strap on and that the ESD clip is plugged into a ground jack or connected to an unpainted metal surface. If not, do so now.
2. Remove dust and debris from the system processor socket area.
   If dust or debris is present, use the supplied air pump to clean the system processor socket area.
3. Prepare the system processor module for installation:
   1. Open the latches that hold the system processor module in the supplied removal tool (A). Push down on the ring (B) while pressing in on the tabs (C).
      See Figure 1.

      

   2. Lower the tool over the system processor module while ensuring that the two guide pins (A) insert into the alignment holes (B) on each side of the tool.
      See Figure 2.

      

   3. With the removal tool sitting on top of the system processor module, push down on the ring (A) to close the latches (C) and lock the system processor module into the tool. Make sure that both of the tool jaws are locked on the system processor module.
      See Figure 3.

      

4. Hold the sides of the tool with system processor module and carefully lift the tool out of the system processor module tray.
5. Install the system processor module:
   1. If dust or debris is present on the system processor socket, use the supplied air pump to clean the socket. Blow small bursts of air from the center toward the sides of the socket, as shown in Figure 4.

      

   2. Lower the tool and system processor module onto the socket. Align the guide pins (A) with the alignment holes (B) on each side of the tool. Use care to lower the tool evenly without tilting the tool.
      See Figure 5.

      Note: Do not attempt to slide the tool and the system processor module in any direction while the system processor module is touching the socket. If the tool and the system processor module are not aligned with the guide pins, lift the tool and the system processor module and reposition them.

      

   3. Open the latches that hold the system processor module in the supplied removal tool (A). Push down on the ring (B) while pressing in on the tabs (C).
      See Figure 6.

      

   4. Lift the tool off the system processor module.
6. Inspect the thermal interface material (TIM) for visible signs of damage, as shown in Figure 7. If you see folds, tears, bends, or if you have doubts about the TIM, replace it.

   

7. Choose one of the following repair options:

   Option	Description
   Is the TIM damaged?	It is damaged. Proceed to step 8 to replace the TIM and install the existing heat sink.
   Is the TIM OK?	It is not damaged and can be reused. Proceed to step 9 to reuse the TIM and install the existing heat sink.

8. Use this step to install a new TIM and reuse the existing heat sink.
   1. Open the TIM packaging and carefully remove the TIM, holding it by the edges of the carrier strip and holding it away from the shipping container.
   2. Remove the protective film from the clear carrier strip by using the supplied tweezers.
      Note: The TIM must remain flat. Small wrinkles are acceptable, but folds are not acceptable.
   3. Using the tweezers, remove the TIM from the carrier strip and center it onto the system processor module.
      The TIM has no preferred up side. The TIM can be placed on the system processor module and centered as shown in Figure 8.

      

   4. Place the heat sink on the TIM as shown in Figure 9.

      

   Continue with step 10.

9. Use this step to reuse the existing undamaged TIM and heat sink.
   1. Using the tweezers, move the old TIM from the clean, dry surface and center it onto the new system processor module.
      The TIM has no preferred up side. The TIM can be placed on the system processor module and centered as shown in Figure 10.

      

   2. Place the heat sink on the TIM as shown in Figure 11.

      

10. Secure the TIM and heat sink to the system processor socket.
    1. Ensure that the heat sink load arms are engaged as shown by (A) in Figure 12.
    2. Tighten the center load screw clockwise by using the supplied hex key as shown by (B) in Figure 12 until a firm stop is reached. If the heat sink moves noticeably, the load arms are not engaged. Unscrew the center load screw and repeat this step again.

       

11. Replace the air baffles (A) and (B) as shown in Figure 13.

    

12. Lightly grip the system processor module that you replaced by the edges and lift it off the packaging cover. Align the beveled corner of the module (A) to the corner of the packaging with triangle (B) and place it in the packaging, as shown in Figure 14. Close the packaging cover.