Service Manual

Steps

1. Using the alignment posts, connect the left I/O-board connector board to the system-board assembly

NOTE: The I/O-board connector board is polarity sensitive. To prevent damaging your computer, utilize the alignment

pins to correctly replace the I/O-board connector board.

2. Using the alightment posts, replace and connect the left I/O-board to the connector on the system-board assembly.

3. Replace the four screws (M2x4.5) that secure the left I/O-board to the system-board assembly.

Next steps

1. Follow the procedure from step 3 to step 24 in

Installing the system board.

2. Install the right IO-board.

3. Install the rear IO-cover.

4. Install the M.2 2230 solid-state drive. (if applicable)

5. Install the M.2 2280 solid-state drive. (if applicable)

6. Install the

M.2 2230 WWAN/solid-state drive. (if applicable)

7. Install the battery.

8. Install the base cover.

9. Follow the procedure in After working inside your computer.

Fan and heat-sink assembly

Removing the fan and heat-sink assembly

Prerequisites

1. Follow the procedure in Before working inside your computer.

2. Remove the base cover.

3. Remove the battery.

4. Remove the M.2 2230 solid-state drive. (if applicable)

5. Remove the

M.2 2280 solid-state drive. (if applicable)

6. Remove the rear IO-cover.

7. Remove the right IO-board.