HP ENVY Sleekbook 4-1117nr HP ENVY 4 Sleekbook HP ENVY 4 Ultrabook HP ENVY 4 U - Page 74

USB/Audio board, Remove the subwoofer see

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2. Remove the security bracket (2). USB/Audio board Description USB/Audio board Spare part number 686584-001 Before removing the USB/Audio 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 display panel (see Display panel on page 39). 5. Remove the base enclosure (see Base enclosure on page 42). 6. Disconnect the battery cable (see Battery on page 43). 7. Remove the subwoofer (see Subwoofer on page 64). 8. Remove the security bracket (see Security bracket on page 65). 66 Chapter 4 Removal and replacement procedures

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2.
Remove the security bracket
(2)
.
USB/Audio board
Description
Spare part number
USB/Audio board
686584-001
Before removing the USB/Audio 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 display panel (see
Display panel
on page
39
).
5.
Remove the base enclosure (see
Base enclosure
on page
42
).
6.
Disconnect the battery cable (see
Battery
on page
43
).
7.
Remove the subwoofer (see
Subwoofer
on page
64
).
8.
Remove the security bracket (see
Security bracket
on page
65
).
66
Chapter 4
Removal and replacement procedures