Toshiba 960-809 manual Applying new grease

4.20 Fan/Heat sink/CPU 4 Replacement Procedures

4.When silicon grease is already applied to the CPU or fin, wipe them off with a cloth in advance.

5.Apply new grease (Shin-Etsu Chemical Co. X-23-7921-5) 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 4-35 Applying new grease

6. Place the fan on the heat sink and secure them with the following screws.

∙ M2.5×4.0B FLAT HEAD screw ×2

7. Set the fan hood in place.

CAUTION: Do not apply silicon grease on the North bridge.

8. Place the heat sink on the CPU and secure it with the following screws.

∙ M2.0×4.0B BIND screw ×4

9. Connect the fan cable to the connector CN3380 on the system board.

CAUTION: Do not put the fan cable on the fan.

Tighten the screws in the order of the number marked on the CPU hold plate.

PORTÉGÉ M780 Maintenance Manual (960-809) [CONFIDENTIAL] 4-57