Dell Latitude C840 - Manual (Page 30)

7. Remove the four M2.5 x 4-mm screws that secure the palm rest bracket.
8. While supporting the palm-rest flex cable, lift out the palm rest bracket and turn it over.
9. Disconnect the reserve battery cable.
10. Remove the reserve battery:
a. Pry the reserve battery free from the metal palm rest bracket.
b. Remove the foam-pad remnants from the palm rest bracket.
Replacing the Reserve Battery
1. Seat the reserve battery and press it into place.
2. Connect the reserve battery cable.
3. Place the palm rest bracket loosely in the palm rest, and connect the palm-rest flex cable to the ZIF connector.
4. Replace the four M2.5 x 4-mm screws that secure the palm rest bracket to the palm rest.
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1 M2.5 x 4-mm screws (4)
2 palm rest bracket
3 palm-rest flex cable