HP Pavilion 15-cr0000 Maintenance and Service Guide - Page 54

System board, Fan/heat sink assembly see

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System board NOTE: All system board spare part kits include a processor and replacement thermal material. Description System board for use in models with discrete graphics: ● Equipped with an Intel Core i7-8550U processor and 4 GB of discrete graphics memory ● Equipped with an Intel Core i5-8250U processor and 2 GB of discrete graphics memory System board for use in models with UMA graphics: ● Equipped with an Intel Core i7-8550U processor ● Equipped with an Intel Core i5-8250U processor and an HD camera ● Equipped with an Intel Core i5-8250U processor and an IR camera ● Equipped with an Intel Core i3-8130U processor ● Equipped with an Intel Pentium 4415U processor Spare part number L20842-xx1 L20841-xx1 L28780-xx1 L20844-xx1 L20846-xx1 L20847-xx1 L20845-xx1 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 bottom cover (see Bottom cover on page 27). 5. Remove the battery (see Battery on page 29). When replacing the system board, be sure to remove the following components from the defective system board and install them on the replacement system board: ● WLAN module (see WLAN module on page 32) ● Solid-state drive (see Solid-state drive on page 30) or Optane memorhy module (see Optane memory module on page 31) ● Fan/heat sink assembly (see Fan/heat sink assembly on page 51) ● Memory modules (see Memory module on page 36) Remove the system board: 1. Disconnect the following cables from the system board: (1): Audio/power button board cable (2): TouchPad cable (3): Keyboard cable (4): Backlight cable (5): Hard drive cable 46 Chapter 5 Removal and replacement procedures

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System board
NOTE:
All system board spare part kits include a processor and replacement thermal material.
Description
Spare part number
System board for use in models with discrete graphics:
●
Equipped with an Intel Core i7-8550U processor and 4 GB of discrete graphics memory
L20842-xx1
●
Equipped with an Intel Core i5-8250U processor and 2 GB of discrete graphics memory
L20841-xx1
System board for use in models with UMA graphics:
●
Equipped with an Intel Core i7-8550U processor
L28780-xx1
●
Equipped with an Intel Core i5-8250U processor and an HD camera
L20844-xx1
●
Equipped with an Intel Core i5-8250U processor and an IR camera
L20846-xx1
●
Equipped with an Intel Core i3-8130U processor
L20847-xx1
●
Equipped with an Intel Pentium 4415U processor
L20845-xx1
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 bottom cover (see
Bottom cover
on page
27
).
5.
Remove the battery (see
Battery
on page
29
).
When replacing the system board, be sure to remove the following components from the defective system
board and install them on the replacement system board:
●
WLAN module (see
WLAN module
on page
32
)
●
Solid-state drive (see
Solid-state drive
on page
30
) or Optane memorhy module (see
Optane memory
module
on page
31
)
●
Fan/heat sink assembly (see
Fan/heat sink assembly
on page
51
)
●
Memory modules (see
Memory module
on page
36
)
Remove the system board:
1.
Disconnect the following cables from the system board:
(1)
: Audio/power button board cable
(2)
: TouchPad cable
(3)
: Keyboard cable
(4)
: Backlight cable
(5)
: Hard drive cable
46
Chapter 5
Removal and replacement procedures