HP ENVY Ultrabook 4-1000 HP Envy 4 - Maintenance and Service Guide - Page 60
RJ-45 module cover, and then unplugging the AC adapter from the computer.
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4. Remove the heat sink (4). Reverse this procedure to install the fan and the heat sink.. RJ-45 module cover Description RJ-45 module cover Spare part number 686582-001 Before removing the RJ-45 module cover: 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 display panel (see Display panel on page 31). 5. Remove the base enclosure (see Base enclosure on page 33). 6. Disconnect the battery cable (see Battery on page 35). Remove the RJ-45 module cover: 1. Remove the 2 Phillips PM screws securing the RJ-45 module cover (1). 52 Chapter 4 Removal and replacement procedures