HP ProBook 4340s HP ProBook 4340s Notebook PC HP ProBook 4341s Notebook PC - M - Page 75

Top cover see, Heat sink see

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Description B970, 2.3-GHz, with 2-MB L3 cache Intel Celeron processor B840, 1.9-GHz, with 2-MB L3 cache Spare part number 676785-001 664663-001 Before removing the processor, 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 31). 5. Remove the following components: a. Bottom door (see Bottom door on page 33) b. Hard drive (see Hard drive on page 37) c. Optical drive (see Optical drive on page 35) d. WLAN module (see WLAN/Bluetooth combo card on page 43) e. WWAN module (see WWAN module on page 41) f. Keyboard (see Keyboard on page 45) g. Top cover (see Top cover on page 47) h. System board (see System board on page 61) i. Heat sink (see Heat sink on page 63) Remove the processor: 1. Position the system board upside-down. 2. Use a flat-bladed screwdriver to turn the processor locking screw (1) one-half turn counterclockwise until you hear a click. Component replacement procedures 67

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Description
Spare part number
B970, 2.3-GHz, with 2-MB L3 cache
676785-001
Intel Celeron processor
B840, 1.9-GHz, with 2-MB L3 cache
664663-001
Before removing the processor, 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
31
).
5.
Remove the following components:
a.
Bottom door (see
Bottom door
on page
33
)
b.
Hard drive (see
Hard drive
on page
37
)
c.
Optical drive (see
Optical drive
on page
35
)
d.
WLAN module (see
WLAN/Bluetooth combo card
on page
43
)
e.
WWAN module (see
WWAN module
on page
41
)
f.
Keyboard (see
Keyboard
on page
45
)
g.
Top cover (see
Top cover
on page
47
)
h.
System board (see
System board
on page
61
)
i.
Heat sink (see
Heat sink
on page
63
)
Remove the processor:
1.
Position the system board upside-down.
2.
Use a flat-bladed screwdriver to turn the processor locking screw
(1)
one-half turn
counterclockwise until you hear a click.
Component replacement procedures
67