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4.23 CPU/CPU fin/DC fan 4 Replacement Procedures
4. When silicon grease is already applied to the CPU or CPU fin, wipe them off with a
cloth in advance.
5. Apply new grease (DENKA GFC-F1) on the CPU using a special syringe as shown
in the following figure. Apply quarter of scale (0.25ml) of grease evenly on the CPU
chip.
Grease
CPU
Figure 4-45 Applying new grease
6. If there is already cool sheet on the North bridge or CPU fin, remove the cool sheet.
Stick a new cool sheet on the North bridge in place.
NOTE: Do not reuse the cool sheet. Be sure to use a new cool sheet (15X15XT1.0).
7. Set the DC fan to the CPU fin and secure them with the following screws.
• M2.5×4B FLAT HEAD screw ×2
8. Set the CPU fin (with the DC fan) in place and secure it with the following screws.
• M2.0×4B BIND screw ×2
NOTE: When securing the CPU fin, be sure to secure the screws in the order of the
number marked (1 to 2) on the board spring of the fin.
9. Set the heat sink plate in place and secure it with the following screws.
• M2.0×4B BIND screw ×4
NOTE: When securing the heat sink plate, be sure to secure the screws in the order of
the number marked (1 to 4) on the plate.
10. Connect the fan harness to the connector CN8771 on the system board.
TECRA A10/S10/P10/SatellitePro S300 Maintenance Manual (960-684) [CONFIDENTIAL] 4-71