HP LJ476UT User Manual - Page 82

Power button board

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4. Lift the side of the board (3), slide it out from under the tab, and then remove the board from the top cover (4). Reverse this procedure to install the Quick Launch board. Power button board Description Power button board for use in model 4530s Power button board for use in model 4730s Spare part number 646294-001 646295-001 Before removing the power button 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 47). 5. Remove the following components: a. Bottom door (see Bottom door on page 49). b. Optical drive (see Optical drive on page 50) c. Keyboard (see Keyboard on page 63) d. Top cover (see Top cover on page 65) Remove the power button board: 74 Chapter 4 Removal and replacement procedures

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4.
Lift the side of the board
(3)
, slide it out from under the tab, and then remove the board from the
top cover
(4)
.
Reverse this procedure to install the Quick Launch board.
Power button board
Description
Spare part number
Power button board for use in model 4530s
646294-001
Power button board for use in model 4730s
646295-001
Before removing the power button 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
47
).
5.
Remove the following components:
a.
Bottom door (see
Bottom door
on page
49
).
b.
Optical drive (see
Optical drive
on page
50
)
c.
Keyboard (see
Keyboard
on page
63
)
d.
Top cover (see
Top cover
on page
65
)
Remove the power button board:
74
Chapter 4
Removal and replacement procedures