Lenovo IdeaPad 100S manual Power system checkout, Checking the AC adapter

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General checkout

Power system checkout

To verify a symptom, follow the steps below:

1.Turn off the computer.

2.Remove the battery pack.

3.Connect the AC adapter.

4.Make sure that power is supplied when you turn on the computer.

5.Turn off the computer.

6.Disconnect the AC adapter and install the charged battery pack.

7.Make sure that the battery pack supplies power when you turn on the computer.

If you suspect a power problem, see the appropriate one of the following power supply checkouts:

“Checking the AC adapter” on page 21

“Checking operational charging” on page 22

“Checking the battery pack” on page 22

Checking the AC adapter

You are here because the computer fails only when the AC adapter is used.

If the power-on indicator does not turn on, check the power cord of the AC adapter for correct continuity and installation.

If the computer does not charge during operation, go to “Checking operational charging”.

To check the AC adapter, follow the steps below:

1.Unplug the AC adapter cable from the computer.

2.Measure the output voltage at the plug of the AC adapter cable. See the following figure:

Pin

Voltage (V DC)

 

 

1

+20

 

 

2

0

 

 

2

1

Note: Output voltage for the AC adapter pin No. 2 may differ from the one you are servicing.

3.If the voltage is not correct, replace the AC adapter.

4.If the voltage is acceptable, do the following:

Replace the system board.

If the problem persists, go to “Lenovo ideapad 100S-14IBR” on page 26. Note: Noise from the AC adapter does not always indicate a defect.

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Contents Ideapad 100S-14IBR Hardware Maintenance Manual First Edition Sep Copyright Lenovo 2015. All rights reserved Contents About this manual Safety information General safety Electrical safety Lenovo ideapad 100S-14IBR Hardware Maintenance Manual Safety inspection guide Grounding requirements Safety notice Safety notices multilingual translationsLenovo ideapad 100S-14IBR Hardware Maintenance Manual Safety information Lenovo ideapad 100S-14IBR Hardware Maintenance Manual Safety information Lenovo ideapad 100S-14IBR Hardware Maintenance Manual Safety information Laser compliance statement Safety information Strategy for replacing FRUs Important service informationImportant notice for replacing a system board Strategy for replacing a hard disk driveImportant information about replacing RoHS compliant FRUs General checkout What to do first Following are not covered under warrantyChecking the AC adapter Power system checkoutChecking operational charging Checking the battery packRestoring the factory contents by using Recovery system Related service informationPower-on password PasswordsHard-disk password Administrator passwordScreen blank state Power managementPutting the computer to sleep or shutting it down Putting your computer to sleepLenovo ideapad 100S-14IBR SpecificationsLenovo ideapad 100S-14IBR Status indicators Status indicatorsFn key combinations Fn key combinations/HotkeysScrew notices FRU replacement noticesRemoving and replacing an FRU Remove the screws 1 and 2 from the bottom Base coverRemove the base cover in the directions shown by arrows 4 Win 10 OS label Brazil label Rating label For access, remove this FRU Base cover on Battery packRemove the battery pack Remove the screw Solid state disk on select modelsRemoval steps of PCI Express Mini Card for wireless LAN PCI Express Mini Card for wireless LANWhen installing Removal steps of IO board IO boardRemoval steps of touchpad button board Touchpad button boardRemoval steps of speakers SpeakersImportant notices for handling the system board System boardRemove the system board in the direction shown by arrows Removal steps of upper case Upper caseLenovo ideapad 100S-14IBR Hardware Maintenance Manual Remove LCD bezel screw pads 1 and the screws LCD unitPANEL-A Cover Removal steps of LCD hinges LCD hingesHinge BKT-A Cover Removal steps of EDP cable and integrated camera EDP cable and integrated cameraRemove the EDP cable in the direction shown by arrows Front and right-side view LocationsBottom and left-side view Parts list Overall Parts list-Overall FRU LCD FRUs Parts list-LCD FRUs Screws AC adaptersLenovo ideapad 100S-14IBR Hardware Maintenance Manual Trademarks Mans.io