Lenovo IdeaCentre B500 - Manual (Page 46)

Hardware Maintenance Manual
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9. To secure the microprocessor in the socket, close the microprocessor
retainer and lock it into position with the small handle.
10. Use the thermal grease syringe to place five drops of grease on the top
of the microprocessor. Each drop of grease should be 0.03ml (3 tick
marks on the grease syringe).
11. Install the thermal module.
12. Screw back the computer back cover to the computer chassis.
Replacing the Rear IO module
To replace the rear IO module
1. Remove the computer cover. Refer to “Removing the computer cover”.
2. Remove the three screws that secure the rear IO to the chassis. Pull the
rear IO away from the chassis.
3. Align and screw a new rear IO back to the chassis.
4. Screw back the computer back cover to the computer chassis.