Lenovo ThinkPad E455 Hardware Maintenance Manual page 79

Remove the system board together with the thermal fan assembly.
11
Turn over the system board. The thermal fan assembly is on the other side of the system board. Then
loosen the screws in the alphabetical order as shown.
1b
1e
1c 1g
1f
1d
1a
73
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Chapter 9 Removing or replacing a FRU