Acer Aspire 8940 Service Guide

Chapter 3171
Replacing the Launch Board
1.Place the Launch Board into the Upper Cover, taking care to align the pins.
2.Connect the Mainboard FFC to the Launch Board and close the locking latch.
3.Press the FFC onto the adhesive on the Upper Cover to secure it in place and pass the FFC through the 
opening on the Upper Cover as indicated 

172Chapter 3
Replacing the Upper Case
1. Place the upper case on the lower case front edge first.
2.Insert the eleven screws to secure the upper cover to the lower cover.
StepSizeQuantityScrew Type
Upper Cover
(red callout)M2.5*4 10
Upper Cover
(green callout)M2*3 1 

Chapter 3173
3.Connect the following FFCs (A, B, D, and E) and cables (C, F, and G) to the Mainboard.
1.Connect the FFC to the Mainboard in position A and close the locking latch.
1.Connect the FFC to the Mainboard in position Band close the locking latch.
1.Connect the FFC to the Mainboard in position C and close the locking latch.
A
B
C
D
E 

174Chapter 3
1.Connect the FFC to the Mainboard in position D and close the locking latch.
1.Connect the FFC to the Mainboard in position E and close the locking latch. 

Chapter 3175
2.Turn the computer over. Replace the fifteen screws on the bottom panel.
 
Replacing the LCD Module
1.Using both hands, set the LCD Module into the Lower Cover, taking care to set the mounting pins into the 
bottom cover.
NOTE: Ensure that the antenna, microphone, and LVDS cables pass through the openings on the hinge wells 
before securing the LCD module in place.
StepSizeQuantityScrew Type
Upper Cover
(red callout)M2.5*6.5 9
Upper Cover
(green callout)M2.5*4 5
Upper Cover
(blue...

176Chapter 3
2.Insert the four screws to secure the LCD Module to the Lower Cover.
3.Connect the MIcrophone cable to the Mainboard.
4.Insert the Microphone cable into the cable channel all the way to the Hinge Well. 
StepSizeQuantityScrew Type
LCD Module M2.5*6.5 4 

Chapter 3177
5.Push the LVDS cable onto the connector until it snaps into place.
6.Insert the LVDS cable into the cable channel all the way to the Hinge Well. Ensure that the cable passes under 
all retaining clips.
7.Insert the Antenna into the cable channel all the way from the Hinge Well. Ensure that the cables pass under 
all retaining clips. 

178Chapter 3
8.Push the Antenna cables through the Upper Cover as shown.
9.Turn the computer over pull the Antenna cables through to take up all slack from the upper cover side. 

Chapter 3179
Replacing the Power Board
1.Slide the Power Board under the retaining clip in the Switch Cover and set it in place, taking care to align the 
screw holes.
2.Insert the three screws to secure the Power Board to the Switch Cover.
1.Connect the FFC from the Power Board and close the locking latch.
StepSizeQuantityScrew Type
Power Board M2.5*4 3 

180Chapter 3
Removing the Switch Cover
1.Place the switch board face-down on top of the upper cover.
2.Connect the FFC to the Mainboard and close the locking latch.
3.Flip the Switch Cover into place and press down on the top edge until it snaps into place as shown.
4.Turn the computer over. Replace the thirteen screws to secure the Switch Cover to the Upper Cover.