HP 425 - Notebook PC Spezifikationen PDF herunterladen (Seite 114)

Audio board

Description Spare part numbers

Audio board 620608-001

Audio board for use on system boards with UMA graphics subsystem 622614-001

Before removing the 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 battery (see

Battery on page 51).

5. Remove the service door (see

Service door on page 52).

6. Remove the hard drive (see

Hard drive on page 54).

7. Remove the optical drive (see

Optical drive on page 63).

8. Remove the fan (see

Fan on page 65).

Remove the palm rest (see

Palm rest on page 70).

10. Remove the keyboard (see

Keyboard on page 73).

11. Remove the top cover (see

Top cover on page 77).

12. Remove the system board (see

System board on page 96).

Remove the audio board from 39.6-cm (15.6-in) computers:

1. Position the computer right-side up with the front toward you.

106 Chapter 4 Removal and replacement procedures

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HP 425 - Notebook PC Spezifikationen Seite 114