Table 8-12 System board descriptions and part numbers (continued)
Description Spare part number
Intel Core Ultra7-165U processor, models with WWAN N96558-xx1
Intel Core Ultra7-165U processor, models without WWAN N96559-xx1
Intel Core Ultra7-165H processor, models with WWAN N96560xx1
Intel Core Ultra7-155U processor, models with WWAN N96555-xx1
Intel Core Ultra7-155U processor, models without WWAN N96556-xx1
Intel Core Ultra7-155H processor, models with WWAN N96557-xx1
Intel Core Ultra5-135U processor, models with WWAN N96552-xx1
Intel Core Ultra5-135U processor, models without WWAN N96553-xx1
Intel Core Ultra5-135H processor, models with WWAN N96554-xx1
Intel Core Ultra5-125U processor, models with WWAN N96547-xx1
Intel Core Ultra5-125U processor, models without WWAN N96548-xx1
Intel Core Ultra5-125H processor, models with WWAN N96551-xx1
Before removing the system board, follow these steps:
1. Prepare the computer for disassembly (see Preparation for disassembly on page 62).
2. Remove the bottom cover (see Bottom cover on page 62).
3. Remove the battery (see Battery on page 74).
4. Remove the fan (see Fan on page 82).
NOTE: You do not have to remove the heat sink to remove the system board.
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 Memory modules on page 64).
● WLAN module (see WLAN module on page 66).
● WWAN module (see WWAN module on page 67).
● Solid-state drive (see Solid-state drive on page 69).
● Heat sink (see Heat sink on page 85).
Remove the system board:
1. Disconnect the following cables from the system board:
NOTE: You should not disconnect the RTC battery cable from the system board.
● Antenna cables from the WLAN module (select products only) (1)
● Display cable (2) (ZIF)
System board
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