Lenovo ThinkPad Edge E520 (English) User Guide - Page 113

Replacing the keyboard, ThinkPad Edge E420

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10. Attach the cover 1 , pivot it downwards, and then tighten the screws 2 . 11. Reinstall the battery. For more information about how to reinstall the battery, refer to Reinstall the battery. 12. Turn the computer over again and reconnect the cables. Replacing the keyboard Before you start, print these instructions. You can use the following procedures to replace the keyboard with a new one, available as an option. Prerequisites for the procedure DANGER During electrical storms, do not connect the cable to or disconnect it from the telephone outlet on the wall. DANGER Electric current from power, telephone, and communication cables is hazardous. To avoid shock hazard, disconnect the cables before opening the cover of this slot. ThinkPad Edge E420 Removing the keyboard To remove the keyboard, do the following: 1. Turn off the computer; then disconnect the ac power adapter and all cables from the computer. Wait for a few minutes, till the inside of the computer cools, before you start the following procedures. 2. Close the computer display, and turn the computer over. 3. Remove the battery. For more information, refer to "Replacing the battery" on page 77. Chapter 6. Replacing devices 95

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10. Attach the cover
1
, pivot it downwards, and then tighten the screws
2
.
11. Reinstall the battery. For more information about how to reinstall the battery, refer to Reinstall the battery.
12.
Turn the computer over again and reconnect the cables.
Replacing the keyboard
Before you start, print these instructions.
You can use the following procedures to replace the keyboard with a new one, available as an option.
Prerequisites for the procedure
DANGER
During electrical storms, do not connect the cable to or disconnect it from the telephone outlet
on the wall.
DANGER
Electric current from power, telephone, and communication cables is hazardous. To avoid shock
hazard, disconnect the cables before opening the cover of this slot.
ThinkPad Edge E420
Removing the keyboard
To remove the keyboard, do the following:
1. Turn off the computer; then disconnect the ac power adapter and all cables from the computer. Wait for
a few minutes, till the inside of the computer cools, before you start the following procedures.
2. Close the computer display, and turn the computer over.
3. Remove the battery. For more information, refer to “Replacing the battery” on page 77.
Chapter 6
.
Replacing devices
95