Lenovo B520e IdeaCentre B520e Hardware Maintenance Manual (English) - Page 54

Replacing the motherboard, Step 12. Remove the WLAN card. Refer to Replacing the WLAN card.

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Step 8. Lift up the touch module. Step 9. Disconnect the 3 cables from the touch module. Step 10. Connect the 3 cables to the new touch module. Step 11. Line up the new touch module and secure it using the screws. Step 12. Reattach the system fan and heatsink module. Step 13. Reattach the EMI cover, back deco, the computer cover and computer stand. Replacing the motherboard 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 motherboard: Step 1. Remove the memory modules. Refer to "Replacing a memory module". Step 2. Remove the computer cover. Refer to "Removing the computer cover". Step 3. Remove the back deco. Refer to "Removing the back deco" Step 4. Remove the computer stand. Refer to "Removing the computer stand". Step 5. Remove the EMI cover. Refer to "Removing the EMI cover". Step 6. Remove the system fan. Refer to "Replacing the system fan". Step 7. Remove the heatsink. Refer to "Replacing the heatsink". Step 8. Remove the CPU. Refer to "Replacing the CPU". Step 9. Remove the rear I/O module. Refer to "Replacing the rear I/O module". Step 10. Remove the TV tuner card. Refer to "Replacing the TV tuner card". Step 11. Remove the TV scale board. Refer to "Replacing the TV scale board". Step 12. Remove the WLAN card. Refer to "Replacing the WLAN card". Step 13. Remove all the cables connected to the motherboard. Step 14. Remove the 4 screws that secure motherboard to the chassis. 48 IdeaCentre B520e Hardware Maintenance Manual

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Step 8.
Lift up the touch module.
Step 9.
Disconnect the 3 cables from the touch module.
Step 10. Connect the 3 cables to the new touch module.
Step 11. Line up the new touch module and secure it using the screws.
Step 12. Reattach the system fan and heatsink module.
Step 13. Reattach the EMI cover, back deco, the computer cover and computer stand.
Replacing the motherboard
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 motherboard:
Step 1.
Remove the memory modules. Refer to “Replacing a memory module”.
Step 2.
Remove the computer cover. Refer to “Removing the computer cover”.
Step 3.
Remove the back deco. Refer to “Removing the back deco”
Step 4.
Remove the computer stand. Refer to “Removing the computer stand”.
Step 5.
Remove the EMI cover. Refer to “Removing the EMI cover”.
Step 6.
Remove the system fan. Refer to “Replacing the system fan”.
Step 7.
Remove the heatsink. Refer to “Replacing the heatsink”.
Step 8.
Remove the CPU. Refer to “Replacing the CPU”.
Step 9.
Remove the rear I/O module. Refer to “Replacing the rear I/O module”.
Step 10. Remove the TV tuner card. Refer to “Replacing the TV tuner card”.
Step 11. Remove the TV scale board. Refer to “Replacing the TV scale board”.
Step 12. Remove the WLAN card. Refer to “Replacing the WLAN card”.
Step 13. Remove all the cables connected to the motherboard.
Step 14. Remove the 4 screws that secure motherboard to the chassis.
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IdeaCentre B520e Hardware Maintenance Manual