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Replacing The Led Panel Module - Lenovo IdeaCentre B340 Maintenance Manual

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Step 17. Remove the TV tuner card. Refer to "Replacing the TV tuner card".
Step 18. Remove all the cables connected to the motherboard.
Step 19. Remove the 4 screws that secure the motherboard to the chassis and slide it out as shown.
Step 20. To install the new motherboard:
Line up the motherboard with the chassis, then secure it with the screws.
Insert the battery (CR2032) into the socket with the side labeled "+" facing up, and press
the battery into place.
Insert the notched end of the TV-Tuner card into the card port on the new motherboard and
secure it with the screw.
Insert the notched end of the Wi-Fi card into the card port on the new motherboard and
secure it with the screw.
Install the CPU to the new motherboard and secure the CPU in the socket, close the CPU
retainer and lock it into position with the small handle.
Install the memory module(s) to the new motherboard.
Install the heat-sink to the new motherboard.
Install the system fans to the new motherboard.
Install the TV scalar board to the new motherboard.
Install the rear I/O module to the new motherboard.
Connect the antenna cable(s) to the TV-Tuner card.
Connect all the cables to the new motherboard.
Step 21. Reattach the EMI cover, middle cover, optical drive, computer stand and the rear cover.

Replacing the LED panel module

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 LED panel module:
Chapter 8
Replacing hardware


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