HP ProBook 445 G9 Maintenance And Service Manual page 66

Table 6-8 System board descriptions and part numbers
Description
System board (includes integrated processor)
All system boards use the following part numbers:
xxxxxx-001: Non-Windows operating systems
xxxxxx-601: Windows operating system
AMD Ryzen 7 5825U processor
AMD Ryzen 5 5625U processor
AMD Ryzen 5 5625U processor, WWAN models
AMD Ryzen 3 5425U processor
AMD Ryzen 3 5425U processor, WWAN models
Before removing the system board, follow these steps:
1. Prepare the computer for disassembly (see
2. Remove the bottom cover (see
3. Remove the battery (see
4. Remove the fan (see
When you replace the system board, be sure to remove the following components (as applicable) from the
defective system board and install them on the replacement system board:
Memory modules (see
●
WLAN module (see
●
WWAN module (see
●
Solid-state drive (see
●
Heat sink (see
●
Remove the system board:
1. Disconnect the following cables from the system board:
NOTE:
Antenna cables from the WLAN module (select products only) (1)
●
Power connector cable (2)
●
Speaker cable (3)
●
Display cable (ZIF) (4)
●
USB cable (ZIF) from USB board (5)
●
USB cable (ZIF) from system board (6)
●
Touchpad cable (ZIF) (7)
●
Keyboard backlight cable (ZIF) (select products only) (8)
●
56 Chapter 6 Removal and replacement procedures for authorized service provider parts
Bottom cover on page
Battery on page
Fan on page
Memory modules on page
WLAN module on page
WWAN module on page
Solid-state drive on page
Heat sink on page 54).
You should never disconnect the RTC battery cable from the system board.
Preparation for disassembly on page
38).
48).
52).
40).
42).
43).
46).
Spare part number
N01927-xx1
N01925-xx1
N01926-xx1
N01923-xx1
N01924-xx1
38).