Acer Aspire S3 Ms2346 Service Guide

Machine Maintenance3-37
12. Remove the twenty nine screws securing the keyboard to the upper case.
Figure 3-56. Keyboard Screws
13. Detach the keyboard from the upper case.
Figure 3-57. Keyboard 
Table 3-56. Screws
StepScrewQuantityScrew Type
Keyboard Disassembly
M1.4 × L1.229 

3-38Machine Maintenance
Removing the Power Button Board0
1. Perform the “Removing the Lower Case ” procedure described on page 3-9.
2. Perform the “ Removing the Battery Pack ” procedure described on page 3-10.
3. Release the latch ( 1) from the mainboard then disconnect the power button cable ( 2).
Figure 3-58. Power Button Cable
4. Release the power button board from the adhesive tape securing it ( 1) then tilt the power 
button board ( 2) and detach it from the upper case.
Figure 3-59. Power Button...

Machine Maintenance3-39
Removing the Middle Cover Assembly0
1. Perform the “Removing the Lower Case ” procedure described on page 3-9.
2. Perform the “ Removing the Battery Pack ” procedure described on page 3-10.
3. Perform the “ Removing the Left and Right Speakers ” procedure described on page3-13.
4. Perform the “ Removing the WLAN Module ” procedure described on page 3-15.
5. Perform the “ Removing the DC-In Module (WLAN Board) ” procedure described on 
page 3-17.
6. Perform the “ Removing the HDD...

3-40Machine Maintenance
12. Tilt the upper case until it is approximately at a 100° angle with the LCD assembly. 
Figure 3-61. Upper Case Assembly
13. Detach the middle cover assembly from the upper case.
Figure 3-62. Middle Cover Assembly 

Machine Maintenance3-41
Removing the LCD Module0
1. Perform the “Removing the Lower Case ” procedure described on page 3-9.
2. Perform the “ Removing the Battery Pack ” procedure described on page 3-10.
3. Perform the “ Removing the Left and Right Speakers ” procedure described on page3-13.
4. Perform the “ Removing the WLAN Module ” procedure described on page 3-15.
5. Perform the “ Removing the DC-In Module (WLAN Board) ” procedure described on 
page 3-17.
6. Perform the “ Removing the HDD Module ”...

3-42Machine Maintenance
13. Remove the four screws securing the upper case to the LCD hinges.
Figure 3-64. Upper Case Screws – LCD Hinges
14. Gently detach the LCD cable from the upper case ( 1) and lift the upper case away from 
the LCD module ( 2).
Figure 3-65. LCD Module
IMPORTANT :+
Make sure that the LCD cable is not entangled with the upper case and take 
extra care not to scratch the LCD cable.
Table 3-64. Screws
StepScrewQuantityScrew Type
LCD Module Disassembly
M2 x L4.54 

Machine Maintenance3-43
Reassembly Process0
Replacing the LCD Module0
1. Tilt the LCD hinge approximately at a 45° angle then insert the upper case and align the 
screw posts of the upper case with the screw holes in the LCD hinges.
Figure 3-66. Upper Case
2. Verify that the LCD cable is looped properly in the LCD hinge as shown.
Figure 3-67. Upper Case
IMPORTANT :+
Make sure that the LCD cable is not entangled with the upper case and take 
extra care not to scratch the LCD cable. 

3-44Machine Maintenance
3. Secure the upper case to the LCD hinges using four screws.
Figure 3-68. Upper Case - LCD Hinge Screws
Table 3-68. Screws
StepScrewQuantityScrew Type
Upper Case Reassembly M2 x L4.54 

Machine Maintenance3-45
Replacing the Middle Cover Assembly0
1. Tilt the upper case until it is approximately at a 100° angle with the LCD assembly
Figure 3-69. Upper Case Assembly
2. Insert the middle cover assembly in its slot.
Figure 3-70. Middle Cover Assembly 

3-46Machine Maintenance
3. Pull the upper case downward until it sits parallel with the LCD assembly. 
Figure 3-71. Upper Case Assembly
4. Secure the middle cover assembly to the upper case using four screws.
Figure 3-72. Middle Cover Assembly Screws
Table 3-72. Screws
StepScrewQuantityScrew Type
Middle Cover Reassembly M2 x L34