Microsoft XBOX CONTROLLER Repair Instructions page 38

Procedure – Installation (Mainboard)
1. Install Audio Jack
Place audio jack on the I/O board as shown below.
2. Install Mainboard
Align the locating holes on mainboard with locating posts in the mid-frame. Taking care to
not damage the soldered connections to the motors and to align the connectors properly.
Lower the mainboard into place and press firmly to mate the connectors.
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