Lenovo ideapad FLEX 4 User Manual

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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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”.
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gure:
2
1
Voltage (V DC)
+20
0
Pin
1
2
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FLEX4-1470/ideapadFLEX
4-1435/ideapadFLEX4-1480/ideapadFLEX4-1570/ideapadFLEX4-1580”
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.

Lenovo ideapad FLEX 4 Specifications

General

Brand	Lenovo
Model	ideapad FLEX 4
Category	Laptop
Language	English