HP mt20 Maintenance and Service Guide - Page 64

System board, When replacing the system board

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System board NOTE: All system board spare part kits include replacement thermal material. All system boards use the following part numbers: xxxxxx-001: Non-Windows operating systems xxxxxx-601: Windows 10 operating system Description System board with Intel Celeron 3865U processor Spare part number 921339-301 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 following components: a. Service door (see Service door on page 26). b. Keyboard (see Keyboard on page 32) c. Top cover (see Top cover on page 39) d. USB/audio board (see USB/audio board on page 49) e. Battery (see Battery on page 50) When replacing the system board, be sure to remove the following components (as applicable) from the defective system board and install on the replacement system board: ● Memory modules (see Memory modules on page 27) ● WLAN/Bluetooth module (see WLAN/Bluetooth combo card on page 29) ● M.2 solid-state drive (see M.2 solid-state drive on page 31) ● Heat sink (see Heat sink assembly on page 58) Remove the system board: 1. Position the computer upright on a flat surface. 54 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts

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System board
NOTE:
All system board spare part kits include replacement thermal material.
All system boards use the following part numbers:
xxxxxx-001: Non-Windows operating systems
xxxxxx-601: Windows 10 operating system
Description
Spare part number
System board with Intel Celeron 3865U processor
921339-301
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 following components:
a.
Service door (see
Service door
on page
26
).
b.
Keyboard (see
Keyboard
on page
32
)
c.
Top cover (see
Top cover
on page
39
)
d.
USB/audio board (see
USB/audio board
on page
49
)
e.
Battery (see
Battery
on page
50
)
When replacing the system board, be sure to remove the following components (as applicable) from the
defective system board and install on the replacement system board:
●
Memory modules (see
Memory modules
on page
27
)
●
WLAN/Bluetooth module (see
WLAN/Bluetooth combo card
on page
29
)
●
M.2 solid-state drive (see
M.2 solid-state drive
on page
31
)
●
Heat sink (see
Heat sink assembly
on page
58
)
Remove the system board:
1.
Position the computer upright on a
flat
surface.
54
Chapter 6
Removal and replacement procedures for Authorized Service Provider parts