Lenovo T430U manual Before servicing the computer, Disabling the battery pack in the Uefi Bios

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Before servicing the computer

Carefully read this topic before servicing the computer.

Disabling the battery pack in the UEFI BIOS

Before replacing any FRU, ensure that you have disabled the built-in battery by doing the following:

1.Turn off the computer. Disconnect the ac power adapter and all the cables from the computer.

2.Turn on the computer. When the ThinkPad logo is displayed, press F1 to enter the ThinkPad Setup program.

3.Select Config ➙ Power. The Power submenu is displayed.

4.Select Disable built-in battery.

5.Click Yes in the Setup Warning window, then the computer will be turned off automatically. Wait for three to five minutes to let the computer cool.

Note: After the battery pack is disabled in the UEFI BIOS, it will be automatically enabled when ac power is reconnected.

Removing the SIM card

Some models you are servicing might have the SIM card that the customer has installed. If the computer you are servicing has the SIM card installed, remove it before you start the servicing.

2

1

After you finish the servicing, ensure that you insert the card back into the slot firmly.

1010 Bottom cover

Removal steps of bottom cover

Slide the bottom cover latch to the unlocked position remove the bottom cover 2 .

1 . Hold the latch in the unlocked position, and then

58Hardware Maintenance Manual

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Contents Hardware Maintenance Manual ThinkPad T430uFirst Edition August Copyright Lenovo Contents Appendix A. Notices ThinkPad T430u About this manualIii Iv Hardware Maintenance Manual Safety information General safetyElectrical safety Safety inspection guide Safety notices multilingual translations Grounding requirementsSafety information Hardware Maintenance Manual Safety information Perigo Perigo Vorsicht Vorsicht Vorsicht Safety information Hardware Maintenance Manual Safety information Hardware Maintenance Manual Safety information Hardware Maintenance Manual Safety information Hardware Maintenance Manual Important service information Before replacing partsStrategy for replacing FRUs Select Drivers & SoftwareHow to use error message Dynamic Configure To Order CTOStrategy for replacing a hard disk drive Important notice for replacing a system boardUsing PEW Click Warranty Click Check Warranty StatusFRU identification for CTO, CMV, and GAV products Custom Model Variant CMVHardware Maintenance Manual General checkout Following are not covered under warrantyWhat to do first Checkout guide Lenovo Solution CenterQuick test programs Uefi diagnostic program Bootable diagnostic programsClick Lenovo Bootable Diagnostics Tests ToolsPower system checkout Checking the ac power adapterChecking the battery pack Checking the backup batteryWire Voltage V dc Checking operational chargingHardware Maintenance Manual Related service information Restoring the factory contents by using Recovery Disc SetPower-on password PasswordsHard-disk password Supervisor password How to remove the power-on passwordHow to remove the hard-disk password Select Power-On PasswordPower management Screen blank modeSleep mode Select Master HDPHibernation mode Symptom-to-FRU indexNumeric error codes Error messages No-beep symptomsBeep symptoms LCD-related symptomsIntermittent problems Undetermined problemsReseat the LCD connectors See important note for LCD-related symptomsSystem board LCD assembly Hardware Maintenance Manual Status indicators Indicator MeaningHibernation, or normal mode Function key combinations Key combinations DescriptionHardware Maintenance Manual Locations Locating computer controls, connectors, and indicatorsFront view Bottom view Rear viewLocating FRUs and CRUs CRU statement for customers Major FRUs and CRUs Description Self-service CRU Optional-service CRULCD FRUs and CRUs Looking up FRU information Antenna kit LCD cableHardware Maintenance Manual FRU replacement notices Screw noticesPlastic to plastic Logic card to plasticRestoring the serial number of the system unit Retaining serial numbersMTM on rear label Reading or writing the ECA information Retaining the Uuid Product ID on rear label Hardware Maintenance Manual Removing or replacing a FRU General guidelinesDisabling the battery pack in the Uefi Bios Before servicing the computerRemoving the SIM card Bottom coverRemoving or replacing a FRU Battery pack Important notices for replacing a battery packHard disk drive or solid-state drive assembly Step Screw quantity Color TorqueStep Screw quantity Color Torque Keyboard Removal steps of keyboardStep Screw quantity Color Torque When installing Memory module Removal steps of memory modulePCI Express Mini Card for wireless LAN Removal steps of PCI Express Mini Card for wireless LANRemoval steps of PCI Express Mini Card for wireless WAN Removal steps of PCI Express Half Mini Card for wireless WAN Removal steps of mSATA solid-state drive Backup battery Keyboard bezel Removal steps of keyboard bezelStep Screw quantity Color Torque Hardware Maintenance Manual Speaker assembly Removal steps of speaker assemblyMedia card reader Removal steps of media card readerFingerprint reader Removal steps of fingerprint readerPower button sub card Removal steps of power button sub cardSystem board assembly and thermal fan assembly Hard disk drive or solid-state drive cableRemoval steps of hard disk drive or solid-state drive cable Important notices for handling the system boardRemoval steps of thermal fan assembly When installing DC-in sub card and base cover assembly Removal steps of system boardApplying labels to the base cover assembly Removal steps of DC-in sub cardLCD unit Removal steps of LCD unit M2.5 × 6.5 mm, wafer-head, nylon-coated Black 392 Nm Kgf-cm LCD bezel LCD panelRemoval steps of LCD bezel Removal steps of LCD panelIntegrated camera and microphone combo card Removal steps of integrated camera and microphone combo cardHinges Removal steps of hingesWireless antenna cables and LCD rear cover assembly Removing or replacing a FRU Hardware Maintenance Manual Appendix A. Notices Electronic emissions notices Trademarks1P0B48901