Acer Aspire S5-391 Acer S5-391 Notebook Service Guide - Page 191

Mainboard Installation NOTE: After installing the mainboard, execute the Motor Calibration Tool, refer to Servo Motor Troubleshooting on page 4-14 to use the tool. 1. Align the top side connectors of the mainboard to the slots on the lower case, and then push to install the mainboard. TIP: Ensure all cables are above the mainboard before installing the mainboard. Figure 5-131. Installing the Mainboard 2. Attach the three (3) screws to secure the mainboard to the lower case. Figure 5-132. Securing the Mainboard Screws 5-87 Service and Maintenance