HP ProBook 4535s HP ProBook 4535s Notebook PC - Maintenance and Service Guide - Page 80

USB board

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USB board Description USB board Spare part number 646287-001 Before removing the USB 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 40). 5. Remove the following components: a. Bottom door (see Bottom door on page 42). b. Optical drive (see Optical drive on page 43) c. Keyboard (see Keyboard on page 56) d. Top cover (see Top cover on page 58) Remove the USB board: 1. Position the computer upright with the front toward you. 2. Lift the system board connector latch(1), and then disconnect the USB board cable from the system board (2). 3. Remove the two Phillips PM2.5×5.0 screws (3) that secure the USB board to the computer. 72 Chapter 4 Removal and replacement procedures

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USB board
Description
Spare part number
USB board
646287-001
Before removing the USB 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
40
).
5.
Remove the following components:
a.
Bottom door (see
Bottom door
on page
42
).
b.
Optical drive (see
Optical drive
on page
43
)
c.
Keyboard (see
Keyboard
on page
56
)
d.
Top cover (see
Top cover
on page
58
)
Remove the USB board:
1.
Position the computer upright with the front toward you.
2.
Lift the system board connector latch
(1)
, and then disconnect the USB board cable from the
system board
(2)
.
3.
Remove the two Phillips PM2.5×5.0 screws
(3)
that secure the USB board to the computer.
72
Chapter 4
Removal and replacement procedures