HP ENVY TouchSmart 17-j178nr HP ENVY 17 Notebook PC HP ENVY TouchSmart m7 Note - Page 71
Subwoofer
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9. Remove the optical drive (see Optical drive on page 46). 10. Remove the base enclosure (see Base enclosure on page 55). Remove the optical drive connector board: ▲ Remove the screw (1), and then lift the optical drive connector board (2) to remove it. Reverse this procedure to install the optical drive connector board. Subwoofer Description Subwoofer Spare part number 720263-001 Before removing the subwoofer, 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 39). 5. Remove the service cover (see Service cover on page 40). 6. Remove the hard drive (see Hard drive on page 41). 7. Remove the memory modules (see Memory modules on page 43). 8. Remove the WLAN module (see WLAN module on page 44). Component replacement procedures 61