HP ProBook 650 Maintenance and Service Guide - Page 81
Power button board
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3. Lift the speaker assembly to remove it.(3). Reverse this procedure to install the speaker. Power button board NOTE: The power button board spare part kit includes the cable. Description Power button board For 14" products For 15" products Spare part number 840694-001 840744-001 IMPORTANT: Make special note of each screw and screw lock size and location during removal and replacement. Before removing the power button board, follow these steps: 1. Shut down the computer. 2. Disconnect all external devices connected to the computer. 3. Remove the following components: a. Service door (see Service door on page 37). b. Remove the battery (see Battery on page 38) c. Hard drive (see Hard drive on page 39). d. Solid-state drive (see Solid-state drive (select products only) on page 41). e. WWAN module (see WWAN module (select products only) on page 42). Component replacement procedures 71