Lenovo T550 W550S Hmm En Sp40G55010 02 User Manual (English) Hardware Maintenance Think Pad T550, Laptop (Think Pad)

2015-02-24

• 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)
• Chapter 2. Important service information
  • Strategy for replacing FRUs
    • Strategy for replacing a 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 the battery and operational charging
    • Checking the coin-cell battery
• Chapter 4. Related service information
  • Restoring the factory contents by using the product Recovery Disc Set
  • Using the Windows recovery programs on the Windows 8.1 operating system
  • 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 symptoms
    • No-beep symptoms
    • LCD-related symptoms
    • Intermittent problems
    • Undetermined problems
• Chapter 5. Locations
  • Locating computer controls, connectors, and indicators
    • Front view
    • Left-side view
    • Bottom view
  • Locating FRUs and CRUs
    • Major FRUs
    • LCD FRUs
    • Miscellaneous parts and other FRUs
  • Looking up FRU information
• Chapter 6. FRU replacement notices
  • Common service tools
  • Screw notices
  • Retaining serial numbers
    • Restoring the serial number of the system unit
    • Retaining the UUID
    • Reading or writing the ECA information
• Chapter 7. Removing or replacing a FRU
  • General guidelines
  • Before servicing the computer
    • Disabling the built-in battery
    • Removing the micro SIM card
  • Removing a major FRU
    • 1010 Removable battery
    • 1020 Base cover assembly
    • 1030 Keyboard
    • 1040 Storage-drive stabilizer bar, internal storage drive, hard disk drive cable, and hard disk drive bracket
    • 1050 Memory module
    • 1060 Wireless LAN card
    • 1070 Wireless WAN card
    • 1080 M.2 solid-state drive
    • 1090 Coin-cell battery
    • 1110 dc-in bracket and dc-in cable assembly
    • 1120 Built-in battery or dummy battery
    • 1130 Thermal fan
    • 1140 Speaker assembly
    • 1150 Smart card assembly or dummy smart card
    • 1160 Fingerprint reader assembly
    • 1170 Board for the trackpad and TrackPoint buttons
    • 1180 System board assembly
    • 1190 LCD unit
    • 1210 Power button board
    • 1220 Keyboard assembly
  • Removing an LCD FRU for models without touch panel
    • 2010 LCD bezel assembly
    • 2020 LCD panel and LCD cable
    • 2030 Hinges and hinge brackets
    • 2040 Camera/microphone card
    • 2050 LED cable assembly
    • 2060 Antenna kit and LCD rear cover assembly
  • Removing an LCD FRU for models with touch panel
    • 3010 LCD front sheet bezel
    • 3020 LCD panel assembly and LCD cable
    • 3030 Hinges
    • 3040 Camera/microphone card
    • 3050 Touch sensor card
    • 3060 LED cable assembly
    • 3070 Antenna kit and LCD rear cover assembly
• Appendix A. Notices
  • Electronic emissions notices
  • Trademarks