HP ProBook 4540s Maintenance And Service Manual page 108

Description
Windows 8 Standard models with UMA graphics and an Intel Core i3-3120M processor
Windows 8 Professional models with UMA graphics and an Intel Core i3-3120M processor
Non-Windows 8 models with UMA graphics and an Intel Core i3-3110M processor
Windows 8 Standard models with UMA graphics and an Intel Core i3-3110M processor
Windows 8 Professional models with UMA graphics and an Intel Core i3-3110M processor
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
5. Remove the following components:
a. Bottom door (see
b. Hard drive (see
c. Optical drive (see
d. Keyboard (see
e. Heat shield (see
f. Fan (see
g. Heat sink (see
h. Top cover (see
When replacing the system board, be sure to remove the following components from the defective
system board and install on the replacement system board:
●
Memory module (see
●
SIM (see
●
WLAN/Bluetooth module (see
●
WWAN module (see
●
Processor (see
Remove the system board:
1. Position the computer upright with the front toward you.
100 Chapter 4 Removal and replacement procedures
Battery on page
Bottom door on page
Hard drive on page
Optical drive on page
Keyboard on page
Heat shield on page
Fan on page 75)
Heat sink on page
Top cover on page
Memory modules on page
SIM on page 59)
WLAN/Bluetooth combo card on page
WWAN module on page
Processor on page
55).
58).
62)
60)
70)
73)
77)
82)
64)
66)
80)
Spare part number
718659-501
718659-601
718658-001
718658-501
718658-601
68)