Lenovo B345 IdeaCentre B345-B545 All-In-One Hardware Maintenance Manual - Page 45

Removing the EMI cover, and Rear view for help with locating the various connectors.

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Step 11. To install the new converter board: a. Line up the new converter board with the mounting pins, and then, secure converter board with the pins. b. Connect the two cables to the new converter board. Step 12. Reattach the middle cover, optical drive, computer stand and the rear cover. Removing the EMI cover 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 EMI cover Step 1. Remove any media (disks, CDs, DVDs, or memory cards) from the drives, shut down the operating system, and turn off the computer and all attached devices. Step 2. Unplug all power cords from electrical outlets. Step 3. Disconnect all cables attached to the computer. This includes power cords, input/output (I/O) cables, and any other cables that are connected to the computer. Refer to "Left and right view" and "Rear view" for help with locating the various connectors. Step 4. Remove the rear cover. Refer to "Removing the rear cover". Step 5. Remove the computer stand. Refer to "Removing the computer stand". Step 6. Remove the optical drive. Refer to "Replacing the optical drive". Step 7. Remove the middle cover. Refer to "Removing the middle cover". Step 8. Push the pins to remove the rear I/O module cover from the EMI cover. Step 9. Remove the twelve screws that secure the EMI cover to the chassis. Step 10. Lift up the EMI cover up to remove it. Chapter 8. Replacing hardware 39

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Step 11. To install the new converter board:
a.
Line up the new converter board with the mounting pins, and then, secure converter board
with the pins.
b.
Connect the two cables to the new converter board.
Step 12. Reattach the middle cover, optical drive, computer stand and the rear cover.
Removing the EMI cover
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 EMI cover
Step 1.
Remove any media (disks, CDs, DVDs, or memory cards) from the drives, shut down the operating
system, and turn off the computer and all attached devices.
Step 2.
Unplug all power cords from electrical outlets.
Step 3.
Disconnect all cables attached to the computer. This includes power cords, input/output (I/O)
cables, and any other cables that are connected to the computer. Refer to “Left and right view”
and “Rear view” for help with locating the various connectors.
Step 4.
Remove the rear cover. Refer to “Removing the rear cover”.
Step 5.
Remove the computer stand. Refer to “Removing the computer stand”.
Step 6.
Remove the optical drive. Refer to “Replacing the optical drive”.
Step 7.
Remove the middle cover. Refer to “Removing the middle cover”.
Step 8.
Push the pins to remove the rear I/O module cover from the EMI cover.
Step 9.
Remove the twelve screws that secure the EMI cover to the chassis.
Step 10. Lift up the EMI cover up to remove it.
Chapter 8
.
Replacing hardware
39