HP ProBook 4446s HP ProBook 4445s Notebook PC HP ProBook 4446s Notebook PC - M - Page 69

System board, Battery see

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4. Lift the speaker (3) from the computer. Reverse this procedure to install the speaker. System board NOTE: All system board spare part kits include replacement thermal material. Description System board for use UMA models System board for use in discrete models with 2-GB graphics memory System board for use in discrete models with 1-GB graphics memory Spare part number 683600-001 683599-001 683598-001 Before removing the system 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 following components: a. Battery (see Battery on page 33). b. Bottom door (see Bottom door on page 34). c. Hard drive (see Hard drive on page 38) d. Optical drive (see Optical drive on page 35) e. Memory (see Memory modules on page 40) Component replacement procedures 61

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4.
Lift the speaker
(3)
from the computer.
Reverse this procedure to install the speaker.
System board
NOTE:
All system board spare part kits include replacement thermal material.
Description
Spare part number
System board for use UMA models
683600-001
System board for use in discrete models with 2-GB graphics memory
683599-001
System board for use in discrete models with 1-GB graphics memory
683598-001
Before removing the system 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 following components:
a.
Battery (see
Battery
on page
33
).
b.
Bottom door (see
Bottom door
on page
34
).
c.
Hard drive (see
Hard drive
on page
38
)
d.
Optical drive (see
Optical drive
on page
35
)
e.
Memory (see
Memory modules
on page
40
)
Component replacement procedures
61