Remove The Touchpad Assembly - Lenovo Chromebook S345-14AST Hardware Maintenance Manual

Figure 28. Open the hinges
Step 4. Remove the upper case in the arrow direction shown below.
Figure 29. Remove the upper case
Attention: Do not pull out the upper case before detaching the EDP cable connector. Otherwise
the cable may be damaged.
Refer to "Major FRUs and CRUs" on page 30 to look up details about the following replacement part:
Upper case (with keyboard)

Remove the touchpad assembly

Make sure the following FRUs (or CRUs) have been removed:
"Remove the lower case" on page 36
"Remove the battery pack" on page 37
Step 1. Detach the touchpad connector from the system board.
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Lenovo Chromebook S345-14AST Hardware Maintenance Manual