Lenovo ThinkPad Edge E420s (English) User Guide - Page 96

Replacing the keyboard

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7. Reinstall the solid state drive or hard disk drive door 1 of the solid state drive or hard disk drive, and tighten the screw 2 . 8. Turn the computer over again. Connect the ac power adapter and the cables to the computer. Replacing the keyboard 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. Before you start, print these instructions. To replace the keyboard, do as follows: Removing the keyboard 1. Turn off the computer; then disconnect the ac power adapter and all cables from the computer. 2. Enter ThinkPad Setup to stop battery discharge. Refer to "Before replacing CRU" on page 75 for detailed information. 3. Close the computer display, and turn the computer over. 78 User Guide

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7. Reinstall the solid state drive or hard disk drive door
1
of the solid state drive or hard disk drive, and
tighten the screw
2
.
8. Turn the computer over again. Connect the ac power adapter and the cables to the computer.
Replacing the keyboard
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.
Before you start, print these instructions.
To replace the keyboard, do as follows:
Removing the keyboard
1. Turn off the computer; then disconnect the ac power adapter and all cables from the computer.
2. Enter ThinkPad Setup to stop battery discharge. Refer to “Before replacing CRU” on page 75 for
detailed information.
3. Close the computer display, and turn the computer over.
78
User Guide