Lenovo L440 L540 Hmm En Sp40A26004 04 User Manual (English) Hardware Maintenance Think Pad L440, Laptop (Think Pad) Type 20AT

2017-01-12

• About this manual
• Chapter 1. Safety information
  • General safety
  • Electrical safety
  • Safety inspection guide
  • Handling devices that are sensitive to electrostatic discharge
  • Grounding requirements
  • Safety notices (multilingual translations)
  • Laser compliance statement (multilingual translations)
• Chapter 2. Important service information
  • Strategy for replacing FRUs
    • Strategy for replacing a hard disk drive, a solid-state drive, or an M.2 solid-state drive
    • Important notice for replacing a system board
    • How to use error message
  • Strategy for replacing FRUs for CTO, special-bid, and standard models
    • Product definition
    • FRU identification
• Chapter 3. General checkout
  • What to do first
  • Checkout guide
    • Lenovo Solution Center
    • Quick test programs
    • UEFI diagnostic program
    • Bootable diagnostic programs
  • Power system checkout
    • Checking the ac power adapter
    • Checking operational charging
    • Checking the battery pack
    • Checking the coin-cell battery
• Chapter 4. Related service information
  • Restoring the factory contents by using the Recovery Disc Set
  • Using the Windows recovery programs on the Windows 8 and Windows 8.1 operating system
    • Refreshing your computer
    • Resetting your computer to the factory default settings
    • Using the advanced startup options
    • Recovering your operating system if Windows 8 or Windows 8.1 fails to start
    • Creating and using recovery media
  • Recovery overview for the Windows 10 operating system
    • Resetting your computer
    • Using advanced startup options
    • Recovering your operating system if Windows 10 fails to start
    • Creating and using a recovery USB drive
  • Passwords
    • Power-on password
    • Hard-disk password
    • Supervisor password
    • How to remove the power-on password
    • How to remove the hard-disk password
  • Power management
    • Screen blank mode (for the Windows 7 operating system only)
    • Sleep mode
    • Hibernation mode
  • Symptom-to-FRU index
    • Numeric error codes
    • Error messages
    • Beep errors
    • LCD-related symptoms
    • Intermittent problems
    • Undetermined problems
• Chapter 5. Status indicators
• Chapter 6. Fn key combinations
• Chapter 7. Locations
  • Locating computer controls, connectors, and indicators
    • ThinkPad L440 overview
    • ThinkPad L540 overview
  • Locating FRUs and CRUs
    • Major FRUs and CRUs
    • LCD FRUs and CRUs
    • Miscellaneous kits and other FRUs
    • Looking up FRU information
• Chapter 8. FRU replacement notices
  • Screw notices
  • Retaining serial numbers
    • Restoring the serial number of the system unit
    • Retaining the UUID
    • Reading or writing the ECA information
• Chapter 9. Removing or replacing a FRU
  • Before servicing the computer
  • 1010 Battery pack
  • 1020 Bottom door
  • 1030 Optical drive
  • 1040 Hard disk drive or solid-state drive
  • 1050 Memory module
  • 1060 WWAN card or M.2 solid-state drive
  • 1070 WLAN card
  • 1080 Coin-cell battery
  • 1090 Thermal-fan assembly
  • 1100 Keyboard
  • 1110 Keyboard bezel assembly, fingerprint reader, and power button card
  • 1120 Smart card reader, smart card door, and dummy smart card
  • 1130 Microprocessor
  • 1140 System board assembly
  • 1150 Audio board
  • 1160 Speaker assembly
  • 1170 Hinge bracket, dc-in cable assembly, RJ45 card, and base cover assembly
  • 2010 LCD unit
  • 2020 LCD front bezel
  • 2030 Camera/microphone combo card
  • 2040 Hinges, LCD panel, and LCD cable
  • 2050 LED card and cable assembly
  • 2060 Antenna assembly and LCD rear cover assembly
• Appendix A. Notices
  • Electronic emissions notices
  • Trademarks
• Appendix B. Abbreviation table