HP Chromebook 14-q000 Maintenance and Service Guide - Page 58

System board, WLAN module see

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System board NOTE: The system board spare part kit includes replacement thermal material. Description Spare part number Equipped with an Intel Celeron 2955U 1.40-GHz processor (2.0-MB L3 cache, 15 W), 4.0-GB of 740160-001 system memory, and a graphics subsystem with UMA memory Equipped with an Intel Celeron 2955U 1.40-GHz processor (2.0-MB L3 cache, 15 W), 2.0-GB of 742097-001 system memory, and a graphics subsystem with UMA memory Before removing the system board, follow these steps: 1. Turn off 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 the power from the computer by unplugging the power cord from the computer. 3. Disconnect all external devices from the computer. 4. Remove the keyboard/top cover (see Keyboard/top cover on page 23), and then remove the following components: a. Speakers (see Speakers on page 26) b. Battery (see Battery on page 28) c. WLAN module (see WLAN module on page 32) d. Hall sensor board (see Hall sensor board on page 39) NOTE: When replacing the system board, be sure that the heat sink (see Heat sink on page 54) and the solid-state drive (see Solid-state drive on page 56) are removed from the defective system board and installed on the replacement system board. 52 Chapter 4 Removal and replacement procedures preliminary requirements

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System board
NOTE:
The system board spare part kit includes replacement thermal material.
Description
Spare part number
Equipped with an Intel Celeron 2955U 1.40-GHz processor (2.0-MB L3 cache, 15 W), 4.0-GB of
system memory, and a graphics subsystem with UMA memory
740160-001
Equipped with an Intel Celeron 2955U 1.40-GHz processor (2.0-MB L3 cache, 15 W), 2.0-GB of
system memory, and a graphics subsystem with UMA memory
742097-001
Before removing the system board, follow these steps:
1.
Turn off 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 the power from the computer by unplugging the power cord from the computer.
3.
Disconnect all external devices from the computer.
4.
Remove the keyboard/top cover (see
Keyboard/top cover
on page
23
), and then remove the
following components:
a.
Speakers (see
Speakers
on page
26
)
b.
Battery (see
Battery
on page
28
)
c.
WLAN module (see
WLAN module
on page
32
)
d.
Hall sensor board (see
Hall sensor board
on page
39
)
NOTE:
When replacing the system board, be sure that the heat sink (see
Heat sink
on page
54
)
and the solid-state drive (see
Solid-state drive
on page
56
) are removed from the defective system
board and installed on the replacement system board.
52
Chapter 4
Removal and replacement procedures preliminary requirements