HP mt42 Maintenance and Service Guide - Page 58

System board, Memory modules see

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System board NOTE: All system board spare part kits include replacement thermal material. Description System board with an AMD A8 Pro-8600B processor for use in models with the Windows IoT operating system System board with an AMD A8 Pro-8600B processor for use in models with the Windows Embedded Standard (WES) 7E operating system Spare part number 827570-301 827570-001 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 25). 5. Remove the battery (see Battery on page 28). 6. Remove the following components: a. Keyboard (see Keyboard on page 36) b. Internal base plate (see Internal base plate on page 41) c. Power button board (see Power button board on page 45) d. USB/audio board (see USB/audio board on page 47) 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 modules (see Memory modules on page 30) ● WLAN/Bluetooth module (see WLAN/Bluetooth combo card on page 32) ● WWAN module (see WWAN module on page 34) ● SSD (see SSD on page 29) ● Heat sink/ fan assembly (see Heat sink/fan assembly on page 43) Remove the system board: 1. Disconnect the following cables from the system board: (1) Speaker cable (2) Display cable (3) Webcam cable (select products only) 48 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.
Description
Spare part number
System board with an AMD A8 Pro-8600B processor for use in models with the Windows IoT operating
system
827570-301
System board with an AMD A8 Pro-8600B processor for use in models with the Windows Embedded
Standard (WES) 7E operating system
827570-001
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
25
).
5.
Remove the battery (see
Battery
on page
28
).
6.
Remove the following components:
a.
Keyboard (see
Keyboard
on page
36
)
b.
Internal base plate (see
Internal base plate
on page
41
)
c.
Power button board (see
Power button board
on page
45
)
d.
USB/audio board (see
USB/audio board
on page
47
)
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 modules (see
Memory modules
on page
30
)
●
WLAN/Bluetooth module (see
WLAN/Bluetooth combo card
on page
32
)
●
WWAN module (see
WWAN module
on page
34
)
●
SSD (see
SSD
on page
29
)
●
Heat sink/ fan assembly (see
Heat sink/fan assembly
on page
43
)
Remove the system board:
1.
Disconnect the following cables from the system board:
(1)
Speaker cable
(2)
Display cable
(3)
Webcam cable (select products only)
48
Chapter 6
Removal and replacement procedures for Authorized Service Provider parts