HP ZBook 17 Service Manual page 85

3. Remove the four Torx T8M2.5x5.0 screws inside the battery bay (1) and the three Torx
T8M2.5x5.0 screws in the optical drive/upgrade drive bay (2).
4. Position the computer upright and open it as far as possible.
5. Disconnect the following cables:
(1) Function board
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(2) Power button board cable
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(3) TouchPad cable
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(4) Fingerprint reader board
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6. Starting at the top right, pry the top cover up to disengage it from the base enclosure (1).
Component replacement procedures
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