Lenovo C40-05 Lenovo C40 Series All-In-One Computer Hardware Maintenance Manua - Page 43

Replacing the heat-sink, Step 8. Remove the EMI cover. Refer to Removing the EMI cover. - motherboard

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Step 5. Remove the foot cover. Refer to "Removing the foot cover". Step 6. Remove the stand holder. Refer to "Removing the stand holder". Step 7. Remove the middle cover. Refer to "Removing the middle cover". Step 8. Remove the EMI cover. Refer to "Removing the EMI cover". Step 9. Remove the sealing tape between the system fan and heat-sink. Step 10. Remove the two screws that secure the system fan to the chassis. Step 11. Disconnect the power cable from the motherboard. Step 12. Lift up the system fan to remove it. Step 13. To install the new system fan: a. Place the new system fan into position, and then secure it to the chassis with two screws. b. Connect the system fan power cable to the connector on the motherboard. c. Use the sealing tape to seal the gap in-between the system fan and heat-sink. Step 14. Reattach the EMI cover, middle cover, stand holder, foot cover and stand base. Replacing the heat-sink Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover. Note: It may be helpful to place the computer face-down on a soft flat surface for this procedure. Lenovo recommends that you use a blanket, towel, or other soft cloth to protect the computer screen from scratches or other damage. To replace the heat-sink: Chapter 7. Replacing hardware 37

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Step 5. Remove the foot cover. Refer to “Removing the foot cover”.
Step 6. Remove the stand holder. Refer to “Removing the stand holder”.
Step 7. Remove the middle cover. Refer to “Removing the middle cover”.
Step 8. Remove the EMI cover. Refer to “Removing the EMI cover”.
Step 9. Remove the sealing tape between the system fan and heat-sink.
Step 10. Remove the two screws that secure the system fan to the chassis.
Step 11. Disconnect the power cable from the motherboard.
Step 12. Lift up the system fan to remove it.
Step 13. To install the new system fan:
a. Place the new system fan into position, and then secure it to the chassis with two screws.
b. Connect the system fan power cable to the connector on the motherboard.
c. Use the sealing tape to seal the gap in-between the system fan and heat-sink.
Step 14. Reattach the EMI cover, middle cover, stand holder, foot cover and stand base.
Replacing the heat-sink
Note:
Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthecover.
Note:
It may be helpful to place the computer face-down on a soft flat surface for this procedure. Lenovo
recommendsthatyouuseablanket,towel,orothersoftclothtoprotectthecomputerscreenfromscratches
or other damage.
To replace the heat-sink:
Chapter 7
.
Replacing hardware
37