![background image](http://html.mh-extra.com/html/hp/probook-645-g4/probook-645-g4_maintenance-and-service-manual_2173983075.webp)
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 operating system
Description
Spare part number
System board with integrated AMD Ryzen 7 PRO 2700U mobile processor
L12802-xx1
System board with integrated AMD Ryzen 5 PRO 2500U mobile processor
L12801-xx1
System board with integrated AMD Ryzen 3 PRO 2300U mobile processor
L12800-xx1
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 following components:
a.
Bottom cover (see
)
b.
Battery (see
c.
Hard drive (see
)
d.
Solid-state drive (see
e.
WWAN module (see
)
f.
WLAN module (see
)
g.
Memory modules (see
)
h.
Keyboard (see
)
i.
Internal frame (see
Remove the system board:
IMPORTANT:
Make special note of each screw size and location during removal and replacement
1.
Position the computer upright and open.
Component replacement procedures
65