HP ProBook 6550b HP ProBook 6455b, 6555b, 6450b,and 6550b Notebook PCs - Maint - Page 156

caution can result in damage to the system board and the optical drive connector board.

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2. Remove the three slotted Torx T8M2.5×7.0 screws (1) and (2) that secure the system board to the base enclosure. The front-most screw 2 is present only on computer models equipped with a 15.6in display assembly. 3. Use the middle of the system board (1) to lift the right side (2) of the system board until it rests at an angle. 4. Remove the system board (3) by sliding it away from the base enclosure at an angle. CAUTION: Do not attempt to remove the optical drive connector board from the system board until after the system board has been removed from the base enclosure. Failure to follow this caution can result in damage to the system board and the optical drive connector board. 148 Chapter 4 Removal and replacement procedures

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2.
Remove the three slotted Torx T8M2.5×7.0 screws
(1)
and
(2)
that secure the system board to the
base enclosure. The front-most screw 2 is present only on computer models equipped with a 15.6-
in display assembly.
3.
Use the middle of the system board
(1)
to lift the right side
(2)
of the system board until it rests at
an angle.
4.
Remove the system board
(3)
by sliding it away from the base enclosure at an angle.
CAUTION:
Do not attempt to remove the optical drive connector board from the system board
until after the system board has been removed from the base enclosure. Failure to follow this
caution can result in damage to the system board and the optical drive connector board.
148
Chapter 4
Removal and replacement procedures