HP ProBook 4540s HP ProBook 4540s Notebook PC HP ProBook 4440s Notebook PC HP - Page 93

System board, Hard drive see

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System board NOTE: All system board spare part kits include replacement thermal material. Description For use in 4540s models with: UMA graphics with WWAN UMA graphics without WWAN 1-GB of discrete graphics memory 2-GB of discrete graphics memory System board for use in 4440s/4441s models with: 1-GB discrete graphics 2-GB discrete graphics UMA graphics without WWAN UMA graphics and with WWAN Spare part number 683496-001 683495-001 683493-001 683494-001 683493-001 683494-001 683495-001 683496-001 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 battery (see Battery on page 42). 5. Remove the following components: a. Bottom door (see Bottom door on page 44). b. Hard drive (see Hard drive on page 48) c. Optical drive (see Optical drive on page 46) d. Keyboard (see Keyboard on page 56) e. Heat shield (see Heat shield on page 59) f. Fan (see Fan on page 61) g. Heat sink (see Heat sink on page 63) h. Top cover (see Top cover on page 67) Component replacement procedures 85

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System board
NOTE:
All system board spare part kits include replacement thermal material.
Description
Spare part number
For use in 4540s models with:
UMA graphics with WWAN
683496-001
UMA graphics without WWAN
683495-001
1-GB of discrete graphics memory
683493-001
2-GB of discrete graphics memory
683494-001
System board for use in 4440s/4441s models with:
1-GB discrete graphics
683493-001
2-GB discrete graphics
683494-001
UMA graphics without WWAN
683495-001
UMA graphics and with WWAN
683496-001
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 battery (see
Battery
on page
42
).
5.
Remove the following components:
a.
Bottom door (see
Bottom door
on page
44
).
b.
Hard drive (see
Hard drive
on page
48
)
c.
Optical drive (see
Optical drive
on page
46
)
d.
Keyboard (see
Keyboard
on page
56
)
e.
Heat shield (see
Heat shield
on page
59
)
f.
Fan (see
Fan
on page
61
)
g.
Heat sink (see
Heat sink
on page
63
)
h.
Top cover (see
Top cover
on page
67
)
Component replacement procedures
85