IBM X121E About this manual, ThinkPad X121e, Iii

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About this manual

This manual contains service and reference information for the following ThinkPad® products.

ThinkPad X121e

Machine types (MT) 3045, 3048, 3049, 3051, 3053, 3055

Use this manual along with the advanced diagnostic tests to troubleshoot problems.

Important:

This manual is intended only for trained service technicians who are familiar with ThinkPad products. Use this manual along with the advanced diagnostic tests to troubleshoot problems effectively.

Before servicing a ThinkPad product, be sure to read all the information under Chapter 1 “Safety information” on page 1 and Chapter 2 “Important service information” on page 19.

© Copyright Lenovo 2011

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Contents ThinkPad X121e Hardware Maintenance ManualFirst Edition July Copyright Lenovo Contents Locations Iii About this manualThinkPad X121e Iv Hardware Maintenance Manual General safety Safety informationElectrical safety 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 Before replacing parts Important service informationStrategy for replacing FRUs Select Downloads & DriversDynamic Configure To Order CTO How to use error messageStrategy 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 What to do first General checkoutCheckout guide Diagnostics using PC-Doctor for DOSFollowing are not covered under warranty Testing the computer Lenovo ThinkVantage Toolbox Diagnostics Interactive TestsHardware Info UtilityApplicable test FRU testsChecking the ac power adapter Power system checkoutInteractive Tests Mouse Pin Voltage V dcTerminal Voltage V dc Checking the battery packChecking operational charging Wire Voltage V dc Checking the backup batteryRestoring the factory contents by using Recovery Disc Set Related service informationHard disk password PasswordsPower-on password How to remove the power-on password Supervisor passwordHow to remove the hard-disk password Select Power-On PasswordSleep standby mode Power managementScreen blank mode Symptom-to-FRU index Hibernation modeNumeric error codes No-beep symptoms Error messagesBeep symptoms Intermittent problems LCD-related symptomsReseat the LCD connectors See important note for LCD-related symptomsUndetermined problems Hardware Maintenance Manual Indicator Meaning Status indicatorsHardware Maintenance Manual Key combination Description Speaker volume down keysFn key combinations For Windows Vista and Windows XP Key combination Description For WindowsScrew notices FRU replacement 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 Reading or writing the ECA information Retaining the UuidMTM on the rear label Product ID on the rear labelHardware Maintenance Manual Before servicing ThinkPad X121e models Removing and replacing a FRUImportant notice for replacing a battery pack Battery packBottom slot cover Removal steps of memory modules Memory modulesHard disk drive or solid state drive assembly Step Screw quantity Color Torque PCI Express Mini Card for wireless LANRemoval steps of PCI Express Mini Card for wireless LAN Removal steps of PCI Express Mini Card for wireless WAN 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 Important notices for handling the system board System board assembly, fan assembly, and backup batteryStep 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 LCD unit When installingM2.5 × 5 mm, wafer-head, nylon-coated Black 392 Nm Kgfcm Step Screw cap Screw quantity Color Torque LCD bezel assemblyRemoval steps of integrated camera Integrated cameraLCD panel, LCD cable, and hinges Removal steps of hinges Removing and replacing a FRU Hardware Maintenance Manual Front view LocationsBottom view Rear viewExternal CRU statement to customers Parts listOverall CRU FRU Overall FRU noCRU CRU CRU CRU CRU CRU FRU no. CRU ID LCD FRUsNo. FRU Overall FRU LCD FRU LCD FRU LCD Language FRU no Miscellaneous parts Ac power adaptersCountry or region FRU no Power cordsLanguage Recovery discs Windows XP Professional 32-bit DVDsWindows Vista Business 32-bit DVDs Windows 7 Home Premium 32-bit DVDs Windows 7 Home Basic 32-bit DVDsWindows 7 Professional 32-bit DVDs Windows 7 Home Premium 64-bit DVDs3051-CTO, 52x, 5Ax, 5Bx, 5Dx, 5Ex 3053-CTO 3055-CTO Windows 7 Professional 64-bit DVDsWindows 7 Ultimate 64-bit DVDs Windows 7 Ultimate 32-bit DVDsWindows 7 Starter 32-bit DVDs US English 04T1876Tool Common service tools103 Appendix A. NoticesTrademarks Electronic emissions noticesPage 0A96013