Lenovo A700 User Guide

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Chapter 8. Replacing hardware
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5.  Remove the 2 screws that secure the computer stand to the chassis.
6.  Slide out then lift up the computer stand.
Warning
When finish replacing a FRU, follow the bellowing instructions to install back 
computer stand.  Incorrect operations may damage the computer stand.
To install the computer computer stand
1.  Align then slide the computer stand back in and screw it back. 
2.  Push the computer stand upward as far as it go.
3.  Slide the little handle back down to unlock the computer stand.