Category: Laptop Repair and Service
Contents of this article
- How to check the AC adapter
- How to remove the battery
- LCD display removal
Lenovo 100S Chromebook
Checking the ac power adapter
If the computer fails only when the ac power adapter is used, refer to the information in this topic to check the ac power adapter.
If the power-on indicator does not turn on, check the power cord of the ac power adapter for correct continuity and installation.
To check the ac power adapter, do the following:
1. Unplug the ac power adapter cable from the computer.
2. Measure the output voltage across the plug of the ac power adapter cable. The correct voltages are shown in the following table
If the computer fails only when the ac power adapter is used, refer to the information in this topic to check the ac power adapter.
If the power-on indicator does not turn on, check the power cord of the ac power adapter for correct continuity and installation.
To check the ac power adapter, do the following:
1. Unplug the ac power adapter cable from the computer.
2. Measure the output voltage across the plug of the ac power adapter cable. The correct voltages are shown in the following table
Note: The output voltage across
pin 2 might differ from the voltage that you measure.
3. Depending on the voltage that you measure, do one of the following:
If the voltage is not correct, replace the ac power adapter.
If the voltage is acceptable, do the following:
a. Replace the system board.
b. If the problem persists, call the Customer Support Center.
Note: Noise from the ac power adapter does not always indicate a defect.
3. Depending on the voltage that you measure, do one of the following:
If the voltage is not correct, replace the ac power adapter.
If the voltage is acceptable, do the following:
a. Replace the system board.
b. If the problem persists, call the Customer Support Center.
Note: Noise from the ac power adapter does not always indicate a defect.
DISASSEMBLING PROCEDURE
Remove the upper case and the battery
Step 1. Remove the ten screws 1
Step 1. Remove the ten screws 1
Step 2. Turn over the Chromebook and open the LCD cover.
Step 3. Use a pry bar to slide through the grooves between the upper case and
the base cover 2, and then slowly lift the upper case until the keyboard socket appears 3.
Step 4. Detach the battery connector 4.
Note: The Chromebook will be
powered on automatically when LCD cover is open. Therefore, please make sure that the battery connector is detached from the system board
before doing the following operations.
Step 5. Detach the touchpad cable 5.
Step 6. Open the keyboard socket 6, pull out the keyboard cable 7, and then remove the upper case in the direction shown by arrow 8.
Step 6. Open the keyboard socket 6, pull out the keyboard cable 7, and then remove the upper case in the direction shown by arrow 8.
Step 7. Remove the three screws 9 and then remove the
battery pack in the direction shown by arrow 10.
Remove the LCD bezel
Step 1. Insert a pry bar between one inner side of the LCD bezel and the LCD
panel and then carefully pull the LCD bezel outwards. Repeat this action along the inner edges of the
LCD bezel until all hooks that secure the LCD bezel are detached.
Step 2. Remove the LCD bezel 1
Step 2. Remove the LCD bezel 1
