Lenovo NetVista A20 (English) User guide - Page 62

Removing the top cover for desktop model

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Removing the top cover for desktop model Follow these steps to remove the system unit top cover: 1. Remove the screw that secures the top cover at the back of the system unit. 2. Hold both sides of the system unit top cover and push it forward about 0.25 inch. Lift the top cover up to remove it completely. 3. Touch the bare metal frame of your system unit to dissipate the static electricity from your body. Do not touch any of the components inside the frame before you touch the frame. Do not touch any of the components that have a voltage warning label. 5-6 IBM Personal Computer User Guide

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5-6
IBM Personal Computer User Guide
Removing the top cover for desktop model
Follow these steps to remove the system unit top cover:
1.
Remove the screw that secures the top cover at the back of the system unit.
2.
Hold both sides of the system unit top cover and push it forward about 0.25
inch. Lift the top cover up to remove it completely.
3.
Touch the bare metal frame of your system unit to dissipate the static
electricity from your body. Do not touch any of the components inside the
frame before you touch the frame. Do not touch any of the components that
have a voltage warning label.