HP EliteBook 845 Maintenance And Service Manual page 82

Table 5-15 System board descriptions and part numbers (continued)
Description
Equipped with an AMD Ryzen5-6600U 2.9 GHz processor (6 cores, 16 MB Cache, 15 W) and a non-Windows
operating system
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 from the defective system
board and install them on the replacement system board:
WWAN module (see
●
Memory modules (see
●
Solid-state drive (see
●
WLAN module (see
●
Remove the system board:
1. Disconnect the display panel cable (1) from the system board.
2. Carefully disconnect the WLAN module antenna cables (2) from the WLAN module.
NOTE:
antenna cables, the #1 white WLAN module antenna cable connects to the WLAN module #1 Main terminal.
The #2 black WLAN module antenna cable connects to the WLAN module #1 Aux terminal.
3. Disconnect the following cables from the system board:
Speaker cables (3)
●
Keyboard ZIF cable (4)
●
Card reader ZIF cable (5)
●
Touchpad ZIF cable (6)
●
Backlight ZIF cable (7)
●
NFC module ZIF cable (8)
●
4. Carefully disconnect the WWAN module antenna cables (9) from the WWAN module.
NOTE:
that identify them with a number that corresponds to a terminal on the WWAN module. Connect the
antenna cable to the corresponding WWAN module terminal.
76 Chapter 5 Removal and replacement procedures for authorized service provider parts
Bottom cover on page
Battery on page
Fan on page 54).
WWAN module on page
Memory modules on page
Solid-state drive on page
WLAN module on page
Computer models have either one or two WLAN module antenna cables. On models with two
Computer models have up to four WWAN module antenna cables. The antenna cables have tags
Preparation for disassembly on page
39).
41).
42).
44).
46).
47).
Spare part number
N13896-001
39).