HP LJ476UT User Manual - Page 79
Speaker assembly, Bottom door see
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5. Rotate the Touchpad button board upward (4), and then remove it (5). Reverse this procedure to install the card reader. Speaker assembly Description Speaker assembly for use in 4530s models (includes housing) Speaker assembly for use in 4730s models (includes housing) Spare part number 646298-001 646299-001 Before removing the speaker assembly, 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 47). 5. Remove the following components: a. Bottom door (see Bottom door on page 49). b. Optical drive (see Optical drive on page 50) c. Keyboard (see Keyboard on page 63) d. Top cover (see Top cover on page 65) Remove the speaker assembly: Component replacement procedures 71