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4 Replacement Procedure 4.22 DC FAN
Installing the DC FAN
To install the DC FAN, follow the steps below and refer to Figure 4-30 to 4-33.
1. Secure the DC FAN to the FIN with the following screws.
• M2.5×4C FLAT HEAD screw ×2
2. Stick the INSU FIN UP on the DC FAN and FIN.
CAUTION: When the removed INSU FIN UP is deformed or broken. Use a new one.
3. Turn over the DC FAN assembly.
4. When silicon grease is already applied to the CPU or 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.
CAUTION: Apply the silicon grease to cover the chip surface using the special
applicator to cover the chip surface. Use a spatula to spread new grease.
Grease
CPU
Syringe
Figure 4-33 Applying new grease
6. If there is already a COOL SHEET on the FIN, North Bridge chip, or external
graphics chip, remove the COOL SHEET.
7. Stick a new COOL SHEET on the North Bridge chip and external graphics chip in
place.
CAUTION: Do not reuse the removed cool sheet. Be sure to use a new COOL SHEET.
4-56 [CONFIDENTIAL] TECRA R10 Maintenance Manual (960-708)