IBM X121E manual Battery pack, Important notice for replacing a battery pack

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To remove the SIM card, you need to remove the battery pack first. (See “1010 Battery pack” on page 50.) After you finish the servicing, make sure that you insert the card back into the slot firmly.

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1010 Battery pack

Important notice for replacing a battery pack:

•Lenovo ThinkVantage Toolbox has an automatic battery diagnostic that determines if the battery pack is defective. A battery pack FRU should not be replaced unless this diagnostic shows that the battery is defective.

•The only exception to this is if the battery pack is physically damaged or a customer is reporting a possible safety issue.

•If Lenovo ThinkVantage Toolbox is not installed in the computer, the customer should download this program before a non-physically damaged battery pack is replaced. Note that the replacement of a physically damaged battery pack is not covered by the warranty.

Table 9. Removal steps of battery pack

DANGER

Use only the battery specified in the parts list for your computer. Any other battery could ignite or explode.

Unlock the battery latch 1 . Holding the battery lock lever in the unlocked position and remove the battery pack in the direction shown by arrow 2 .

50Hardware Maintenance Manual

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Contents Hardware Maintenance Manual ThinkPad X121eFirst Edition July Copyright Lenovo Contents Locations Iii About this manualThinkPad X121e Iv Hardware Maintenance Manual Safety information General safetyElectrical safety Safety inspection guide Safety notices multilingual translations Grounding requirementsSafety 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 service information Before replacing partsStrategy for replacing FRUs Select Downloads & DriversHow to use error message Dynamic Configure To Order CTOStrategy for replacing a hard disk drive Important notice for replacing a system boardGeneral Announce Variant GAV Using PEWFRU identification for CTO, CMV, and GAV products Hardware Maintenance Manual General checkout What to do firstCheckout guide Diagnostics using PC-Doctor for DOSFollowing are not covered under warranty Testing the computer Diagnostics Interactive Tests Lenovo ThinkVantage ToolboxHardware Info UtilityFRU tests Applicable testPower system checkout Checking the ac power adapterInteractive Tests Mouse Pin Voltage V dcTerminal Voltage V dc Checking the battery packChecking operational charging Checking the backup battery Wire Voltage V dcRelated service information Restoring the factory contents by using Recovery Disc SetHard disk password PasswordsPower-on password Supervisor password How to remove the power-on passwordHow to remove the hard-disk password Select Power-On PasswordSleep standby mode Power managementScreen blank mode Hibernation mode Symptom-to-FRU indexNumeric error codes No-beep symptoms Error messagesBeep symptoms LCD-related symptoms Intermittent problemsReseat the LCD connectors See important note for LCD-related symptomsUndetermined problems Hardware Maintenance Manual Status indicators Indicator MeaningHardware Maintenance Manual Key combination Description Speaker volume down keysFn key combinations Key combination Description For Windows For Windows Vista and Windows XPFRU replacement notices Screw noticesExternal CRU statement to customers Plastic to plasticSelect 2. Read S/N data from Eeprom Retaining serial numbersRestoring the serial number of the system unit Retaining the Uuid Reading or writing the ECA informationMTM on the rear label Product ID on the rear labelHardware Maintenance Manual Removing and replacing a FRU Before servicing ThinkPad X121e modelsBattery pack Important notice for replacing a battery packBottom slot cover Memory modules Removal steps of memory modulesHard disk drive or solid state drive assembly PCI Express Mini Card for wireless LAN Step Screw quantity Color TorqueRemoval steps of PCI Express Mini Card for wireless LAN PCI Express Mini Card for wireless WAN Removal steps of PCI Express Mini Card for wireless WANKeyboard Removal steps of keyboard Power sub card and microphone Top case assembly Removal steps of top case assembly Bluetooth daughter card Speaker assembly 1120 I/O board System board assembly, fan assembly, and backup battery Important notices for handling the system boardStep Screw quantity Color Torque CRT board assembly with cable DC-in sub card and base cover assembly Applying labels to the base cover Hardware Maintenance Manual When installing LCD unitM2.5 × 5 mm, wafer-head, nylon-coated Black 392 Nm Kgfcm LCD bezel assembly Step Screw cap Screw quantity Color TorqueIntegrated camera Removal steps of integrated cameraLCD panel, LCD cable, and hinges Removal steps of hinges Removing and replacing a FRU Hardware Maintenance Manual Locations Front viewRear view Bottom viewParts list External CRU statement to customersOverall FRU Overall FRU no CRUCRU CRU CRU CRU CRU CRU FRU no. CRU ID LCD FRUsNo. FRU Overall FRU LCD FRU LCD FRU LCD Language FRU no Ac power adapters Miscellaneous partsPower cords Country or region FRU noLanguage Recovery discs Windows XP Professional 32-bit DVDsWindows Vista Business 32-bit DVDs Windows 7 Home Basic 32-bit DVDs Windows 7 Home Premium 32-bit DVDsWindows 7 Home Premium 64-bit DVDs Windows 7 Professional 32-bit DVDsWindows 7 Professional 64-bit DVDs 3051-CTO, 52x, 5Ax, 5Bx, 5Dx, 5Ex 3053-CTO 3055-CTOWindows 7 Ultimate 32-bit DVDs Windows 7 Ultimate 64-bit DVDsWindows 7 Starter 32-bit DVDs US English 04T1876Common service tools ToolAppendix A. Notices 103Electronic emissions notices TrademarksPage 0A96013