HP Dv71270us Service Guide - Page 102
Audio/infrared board
UPC - 884420712770
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5. Remove the system board (4) by sliding it away from the base enclosure at an angle. Reverse this procedure to install the system board. Audio/infrared board Description Audio/infrared board (includes cable) Spare part number 480477-001 Before removing the audio/infrared 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 51). 5. Remove the following components: a. Hard drive (see Hard drive on page 56) b. Optical drive (see Optical drive on page 54) c. Switch cover (see Switch cover on page 66) d. Keyboard (see Keyboard on page 68) e. Speaker assembly (see Speaker assembly on page 72) f. Display assembly (see Display assembly on page 73) g. Top cover (see Top cover on page 82) 94 Chapter 4 Removal and replacement procedures