ThinkPad X1 Carbon (3rd Gen) RTC Battery Replacement

ID: 158693

Description: "If the computer cannot retain date and time,...

Steps:

  1. Loosen the seven cover screws. They will not come out.
    2. Step image
  2. Use spudger to pop loose cover and slide off.
    3. Step image
  3. Only use plastic to remove battery connector
  4. Gently remove battery connector by pushing with the spudger in the direction of the arrow.
  5. Remove five screws holding battery in place and remove battery.
    6. Step image
  6. Firstly go through separate battery removal guide. insert straightend paper clip into SIM card holder (arrow) and eject and remove it.
  7. remove 8 screws shown, incl, metal plate over charging connector and the sim card holder.
  8. Wireless LAN RF cables can be left in place.
  9. disconnect all other connectors from mainboard (and tape that fixes the connectors and Flex connectors)
  10. Tip : Take note of magnet location (square) and orientation in case it dislodges. use marker if needed.
    11. Step image
  11. Pry up main board gently by lifting the Fan end of the motherboard.
  12. pull board gently toward the fan end to dislodge the connectors from the case and release the main board.
  13. when released, turn over the board to view backside of mainboard.
  14. RTC battery can now be replaced.
  15. Functional RTC voltage is above 3,1V.
  16. Brand new RTC voltage is 3,3V
  17. recommend to tape down loose connectors away from main board while assembling the main board.
    18. Step image Step image
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