Lenovo IdeaCentre B520 - Manual (Page 54)

Hardware Maintenance Manual
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13. Reattach the TV tuner card.
14. Reattach the EMI cover, back deco, the computer cover and computer
stand.
Replacing the power supply
To replace the power supply:
1. Remove the computer cover. Refer to “Removing the computer cover”.
2. Remove the back deco. Refer to “Removing the back deco”.
3. Remove the computer stand. Refer to “Removing the computer stand”.
4. Remove the EMI cover. Refer to “Removing the EMI cover”.
5. Remove the 2 screws that secure the power supply connector to the
metal bracket 1 then remove the 4 screws that secure the power
supply to the chassis. 2
6. Disconnect the 2 power cables from the motherboard.
7. Remove the power supply by lifting it up.
8. Line up the new power supply, secure it to the motherboard using the
6 screws, then reconnect the power cables to the motherboard.
9. Reattach the EMI cover, back deco, the computer cover and computer
stand.