Acer Aspire 9420 - Error Message and Code Reference

Chapter 3 66
Removing the System Fan
1. Release the two screws holding the heatsink.
2. Remove the heatsink.
Removing the Bluetooth Module
1. Detach the bluetooth module from the lower case.
2. Carefully disconnect the bluetooth module cable.
Removing the Speakers
1. Release the four screws securing the left and right speakers.
2. Remove the speakers from the lower case.