Lenovo B520e IdeaCentre B520e Hardware Maintenance Manual (English) - Page 50

Replacing the TV scale board

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Step 9. Line up the new TV tuner card bracket then secure it to the chassis with the 2 screws. Step 10. Reattach the TV tuner card, rear I/O module, EMI cover, back deco, the computer cover and computer stand. Replacing the TV scale board Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover. To replace the TV scale board: Note: For this procedure, it helps to place the computer face-down on a soft flat surface. Lenovo recommends that you use a blanket, towel, or other soft cloth to protect the computer screen from scratches or other damage. Step 1. Remove the computer cover. Refer to "Removing the computer cover". Step 2. Remove the back deco. Refer to "Removing the back deco". Step 3. Remove the computer stand. Refer to "Removing the computer stand". Step 4. Remove the EMI cover. Refer to "Removing the EMI cover". Step 5. Remove the rear I/O module. Refer to "Replacing the rear I/O module". Step 6. Remove the TV tuner card. Refer to "Replacing the TV tuner card". Step 7. Remove the 2 screws that secure the TV tuner card bracket to the chassis then lift it up to remove it. Step 8. Disconnect the cables from the TV scale board. Step 9. Remove the 2 screws that secure the TV scale board to the motherboard and chassis. Step 10. Remove the TV scale board from the motherboard by lifting it up. 44 IdeaCentre B520e Hardware Maintenance Manual

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Step 9.
Line up the new TV tuner card bracket then secure it to the chassis with the 2 screws.
Step 10. Reattach the TV tuner card, rear I/O module, EMI cover, back deco, the computer cover and
computer stand.
Replacing the TV scale board
Note:
Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover.
To replace the TV scale board:
Note:
For this procedure, it helps to place the computer face-down on a soft flat surface. Lenovo
recommends that you use a blanket, towel, or other soft cloth to protect the computer screen from scratches
or other damage.
Step 1.
Remove the computer cover. Refer to “Removing the computer cover”.
Step 2.
Remove the back deco. Refer to “Removing the back deco”.
Step 3.
Remove the computer stand. Refer to “Removing the computer stand”.
Step 4.
Remove the EMI cover. Refer to “Removing the EMI cover”.
Step 5.
Remove the rear I/O module. Refer to “Replacing the rear I/O module”.
Step 6.
Remove the TV tuner card. Refer to “Replacing the TV tuner card”.
Step 7.
Remove the 2 screws that secure the TV tuner card bracket to the chassis then lift it up to remove it.
Step 8.
Disconnect the cables from the TV scale board.
Step 9.
Remove the 2 screws that secure the TV scale board to the motherboard and chassis.
Step 10. Remove the TV scale board from the motherboard by lifting it up.
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IdeaCentre B520e Hardware Maintenance Manual