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Lenovo U530 TOUCH Laptop User Manual

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Lenovo IdeaPad U530 Touch

21

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 21

• “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”onpage 21.

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:

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U530Touch”onpage 27.

Note:NoisefromtheACadapterdoesnotalwaysindicateadefect.

Checking operational charging

Tocheckwhetherthebatterychargesproperlyduringoperation,usea

dischargedbatterypackorabatterypackthathaslessthan50%ofthetotal

powerremainingwheninstalledinthecomputer.

Power system checkout

Voltage (V DC)

+20

0

Pin

1

2

2

1

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