User manual

Section 6: Chassis Component Replacement
TVC-500 Operation Manual 6-17
020-100539-01 Rev. 1 (08-2010)
If installing a new heatsink, do not apply thermal compound to the CPU because the new heatsink
already has thermal compound applied to the heatsink surface. Instead, remove the thermal compound
protective liner from the bottom of the new heatsink.
2. Align the four mounting screws with the mounting holes in the system board and carefully place the
heatsink on the CPU.
NOTE: Ensure the heatsink is placed properly with the fan positioned toward the front of the controller.
NOTICE! Do not overtighten the heatsink screws. If overtightened, the threads in the system board tray may
be stripped. Do not fully tighten one screw and then move to the next. Instead, tighten all screws a little at a
time, ensuring that the CPU remains level.
3. Tighten all screws partially so the CPU heatsink remains level.
4. Tighten each set of diagonally opposed screws a little at a time to 6 in.-lb. of torque as shown in Figure 6-
30.
5. Connect the heatsink fan cable to the system board (circled in Figure 6-31).
6.14 CPU
Removal and replacement of the CPU is
described here.
NOTE: Only one CPU is installed in
the TVC-500 Controller, even though
the system board is capable of
supporting dual processors.
6.14.1 Removal
1. Ensure the TVC-500 controller is
powered down. Refer to Section 6.2
Powering Down the Controller.
2. Remove the side access panel
(6.3.1) if not already removed.
3. Remove the airflow guide (6.4.1) if
not already removed.
4. Remove the expansion card support
(6.5.1) if not already removed.
5. Remove the memory fans (6.10).
6. Remove the CPU heatsink (6.13.1).
7. Raise the CPU socket lever (1 in Figure 6-32) and open the cover (2 in Figure 6-32).
NOTICE! The CPU socket contact and pads are extremely fragile. Do not touch the CPU socket contacts or
the gold pads underneath the CPU. Use extreme care and handle the CPU only by the edges.
8. Pull the CPU straight out of the socket (3 in Figure 6-32) and store in a static-free container.
Figure 6-32 CPU Removal