Lenovo 183822U Checking the ThinkPad Tablet AC Charger, Checking the internal battery status

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•Touch the application icon from the action bar and then touch Settings. The Android Settings screen is displayed.

2.Touch About tablet.

3.Touch Status ➙ Battery Condition. One of the following conditions might be displayed:

•Good

•Fair

•Poor

If the condition is Fair or Poor, replace the internal battery.

Checking the ThinkPad Tablet AC Charger

When you use the ThinkPad Tablet AC Charger to charge the tablet but no power is charged, see the instructions in this topic to check the ThinkPad Tablet AC Charger.

To check the ThinkPad Tablet AC Charger, do the following:

1.Disconnect the micro-USB cable from the tablet.

2.Measure the output voltage across the connector marked B of the micro-USB cable. Refer to the following figure:

2 3 (5V)

Pin	Voltage (V dc)

1	Ground

2	0

3	+5

Note: The output voltage across pin 3 of the micro-B connector might be different from the one you are servicing.

3.If the voltage is not correct, replace the micro-USB cable.

4.If the voltage is acceptable, replace the system board.

Checking the internal battery status

To check the battery status of the tablet, do either of the following:

•Approximate information about the battery status

Get the approximate status of the battery at any time by checking the battery status icon on the system bar in the lower-right corner of the screen. The shorter the blue bar is, the less the battery power remains.

•Accurate information about the battery status

To get the accurate information about the battery status of the tablet, do the following:

1.Open the Android Settings screen.

To open the Android Settings screen, do either of the following:

–From the main Home screen, touch the Android Settings icon on Lenovo Launch Zone. The Android Settings screen is displayed.

–Touch the application icon from the action bar and then touch Settings. The Android Settings screen is displayed.

2.Touch About tablet on the Android Settings screen.

3.Touch Status to view the accurate percentage of the remaining battery power. You also can touch Battery use to check what applications are consuming battery power.

Chapter 3. General checkout 25

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Contents ThinkPad Tablet Hardware Maintenance ManualFirst Edition August Copyright Lenovo Contents Ii Hardware Maintenance Manual About this manual Iv Hardware Maintenance Manual General safety Safety informationElectrical safety Hardware Maintenance Manual Safety inspection guide Grounding requirements Safety notices multilingual translationsSafety information Hardware Maintenance Manual Perigo Perigo Safety information Vorsicht Vorsicht Hardware Maintenance Manual Safety information Hardware Maintenance Manual Safety information Hardware Maintenance Manual Safety information Hardware Maintenance Manual Important notice for replacing a system board Important service informationBefore replacing parts Strategy for replacing FRUsCustom Model Variant CMV Dynamic Configure To Order CTOUsing PEW FRU identification for CTO, CMV, and GAV productsImportant service information Hardware Maintenance Manual Be careful not to replace a non-defective FRU Following are not covered under warrantyGeneral checkout What to do firstChecking the internal battery Power system checkoutChecking the internal battery condition Checking the ThinkPad Tablet AC Charger Checking the internal battery statusHardware Maintenance Manual Locking the screen Related service informationResetting a tablet preload to the factory condition Touch Factory data resetTouch the Screen lock sounds icon Changing the password, PIN, or patternTouch Location & Security Configure lock screen Enabling the screen unlock functionScreen blank mode Power managementDisabling the screen lock function Touch Wireless & network Wi-Fi settings Wireless network disconnect policyHot key Description Hardware Maintenance Manual Plastic to plastic FRU replacement noticesScrew notices External CRU statement to customersRetaining serial numbers, MTM, UUID, and Asset ID Before servicing the ThinkPad Tablet Removing and replacing a FRURemoval steps of ThinkPad Tablet Pen ThinkPad Tablet PenThinkPad Tablet Pen on M2 × 4 mm, flat-head, nylon-coated Silver 181 Nm Kgfcm Step Screw quantity Color Torque Speaker assembly Removal steps of speaker assembly PCI Express Mini Card for wireless WANRemoval steps of PCI Express Mini Card for wireless WAN M2 × 3 mm, flat-head, nylon-coated Black 181 Nm Step Screw quantity Color Torque Removal steps of LCD module assembly LCD module assemblyRemoval steps of microphone assembly Microphone assemblyRemoval steps of system board and base cover System board, base cover, and LCD cableApplying labels to the base cover Removal steps of LCD cable Locating the controls and hardware components Hardware Maintenance Manual External CRU statement to customers Parts listOverall FRU FRU ThinkPad Tablet Keyboard Folio Case CRU ID Miscellaneous partsThinkPad Tablet AC Charger ThinkPad Tablet AC ChargerMicro-USB cable ThinkPad Tablet Dock power cord cableTool Common service toolsTrademarks Electronic emission noticesPage 0A96158

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