HP ProBook 4740s HP ProBook 4740s Notebook PC - Maintenance and Service Guide - Page 62
Function board/Power button board assembly
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Function board/Power button board assembly Description Function board/Power button board assembly (includes cable) Spare part number 684613-001 Before removing the function board and power button board, follow these steps: 1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system. 2. Disconnect all external devices connected to the computer. 3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet, and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 33). 5. Remove the following components: a. Bottom door (see Bottom door on page 34). b. Keyboard (see Keyboard on page 45) c. Top cover (see Top cover on page 47) Remove the function board/power button board assembly: 1. Position the top cover upside-down with the front toward you. 2. Remove the two Phillips PM2.0×3.0 screws (1) that secure the function (quick) board to the top cover and the two Phillips PM2.0×3.0 screws (1) that secure the power button board to the top cover. 3. Lift the function board from the top cover (2). 54 Chapter 4 Removal and replacement procedures