HP ProBook 6455b, 6555b, 6450b and 6550b Notebook PCs Maintenance and Service Guide

Speaker assembly
NOTE: The speaker assembly spare part kit includes a cable.
Description Spare part number
For use only on computer models equipped with a 15.6-in display assembly 613348-001 or
663947-001
For use only on computer models equipped with a 14.0-in display assembly 613347-001 or
663946-001
Before removing the speaker assembly, 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 74).
5. Remove the following components:
a. Bluetooth module (see
Bluetooth module on page 76)
b. Mass storage device (see
Mass storage device on page 78)
c. Optical drive (see
Optical drive on page 88)
d. Keyboard (see
Keyboard on page 90)
e. Switch cover (see
Switch cover on page 97)
f. Palm rest (see
Palm rest on page 100)
g. Display assembly (see
Display assembly on page 108)
h. Top cover (see
Top cover on page 120)
i. ExpressCard assembly (only on computer models equipped with a 15.6-in display
assembly, see
ExpressCard assembly on page 125)
Remove the speaker assembly:
NOTE: Steps 1 and 2 apply only to computer models equipped with a 15.6-in display assembly. See
steps 3 through 5 for speaker assembly removal information for computer models equipped with 14.0-
in display assembly.
1. Remove the slotted Torx T8M2.5×7.0 screw (1) that secures the speaker assembly to the base
enclosure.
Component replacement procedures 129