User Guide

Chapter 5 Troubleshooting Guidelines
340S8 Rev : A Page
48
31. Starting from the I/O port portion, flip over the mainboard shielding.
32. Lift the mainboard and disconnect the speaker cable and LID switch cable.
33. When replacing mainboard, make sure to have all the insulation and thermal pads
removed from the defective mainboard and
transfer it to a good mainboard ( because
sometimes, the good mainboard doesn’t have
all the tapes and thermal pad as indicated in the
photo).