Acer Extensa 900 Maintenance Manual

							Field Service    6-23
6.5.11 Removing/Replacing the VGA Video Board
To remove and replace the VGA Video Board Assembly, use the following procedure:
1.Turn off the computer; disconnect the AC power adapter (if it is attached), 
and remove the battery pack and PCMCIA cards as described in Paragraphs 
6.5.1 and 6.5.2. Also disconnect the MPB (Paragraph 6.5.3) if attached.
2.Remove the Keyboard Assembly as described in Paragraph 6.5.5.
3.Remove the Heat Sink Assembly as described in Paragraph 6.5.6.
4.Remove the Display Assembly as described in Paragraph 6.5.7.
5.Remove two screws and unplug the VGA Video Board from the Main Board 
as shown in Figure 6-16.
6.Replacement is the reverse of Steps 1 through 5.
Figure 6-16  Removing/Replacing the VGA Video Board Assembly
1Remove Keyboard, 
Heat Sink and Top
Cover Assemblies
2
Remove Two Screws
and Unplug VGA Board
from Main Board 
						

							6-24   Field Service 
6.5.12 Removing/Replacing the Power Supply Board
To remove and replace the Power Supply Board Assembly, use the following procedure:
1.Turn off the computer; disconnect the AC power adapter (if it is attached), 
and remove the battery pack and PCMCIA cards as described in Paragraphs 
6.5.1 and 6.5.2. Also disconnect the MPB (Paragraph 6.5.3) if attached.
2.Remove the Keyboard Assembly as described in Paragraph 6.5.5.
3.Remove the Heat Sink Assembly as described in Paragraph 6.5.6.
4.Remove the screw that secures the Power Supply Board Assembly to the Main 
Board and remove the board from the base assembly.
5.Replacement is the reverse of Steps 1 through 4.
Figure 6-17  Removing/Replacing the VGA Video Board Assembly
CN1CN22 and CN20
Power Supply
Board
Battery Connector
Cable Assembly 
						

							Field Service    6-25
6.5.13 Removing/Replacing the DC-In Board Assembly
To remove and replace the DC-In Board Assembly, use the following procedure:
1.Turn off the computer; disconnect the AC power adapter (if it is attached), 
and remove the battery pack and PCMCIA cards as described in Paragraphs 
6.5.1 and 6.5.2. Also disconnect the MPB (Paragraph 6.5.3) if attached.
2.Remove the Keyboard Assembly as described in Paragraph 6.5.5.
3.Remove the Heat Sink Assembly as described in Paragraph 6.5.6.
4.Unplug cable connectors CN9 and CN10 and remove the board.
5.Replacement is the reverse of Steps 1 through 4.
Figure 6-18  Removing/Replacing the DC-In Board Assembly
CN9CN10
DC-In
Board 
						

							6-26   Field Service 
6.5.14 Removing/Replacing the PC Card Module
To remove and replace the PC Card Module Assembly, use the following procedure:
1.Turn off the computer; disconnect the AC power adapter (if it is attached), 
and remove the battery pack and PCMCIA cards as described in Paragraphs 
6.5.1 and 6.5.2. Also disconnect the MPB (Paragraph 6.5.3) if attached.
2.Remove the Keyboard Assembly as described in Paragraph 6.5.5.
3.Remove the Heat Sink Assembly as described in Paragraph 6.5.6.
4.Remove the Display Assembly as described in Paragraph 6.5.7.
5.Remove the four screws that secure the PC Card Module to the Main Board 
(refer to Figure 6-19).
6.Replacement is the reverse of Steps 1 through 5.
Figure 6-19  Removing/Replacing the PC Card Module
PC Module
Main Board
Assembly 
						

							Field Service    6-27
6.5.15 Removing/Replacing the Main Board Assembly
To remove and replace the Main Board Assembly, use the following procedure:
1.Turn off the computer; disconnect the AC power adapter (if it is attached), 
and remove the battery pack and PCMCIA cards as described in Paragraphs 
6.5.1 and 6.5.2. Also disconnect the MPB (Paragraph 6.5.3) if attached.
2.Remove the Keyboard Assembly as described in Paragraph 6.5.5.
3.Remove the Heat Sink Assembly as described in Paragraph 6.5.6.
4.Remove the Display Assembly as described in Paragraph 6.5.7.
5.Remove the Top Cover Assembly as described in Paragraph 6.5.10.
6.Remove fourteen screws from the bottom assembly as shown in Figure 6-20.
7.Remove the top cover as described in Paragraph 6.5.10.
8.Remove the Main Board Assembly.
9.Replacement is the reverse of Steps 1 through 8.
Figure 6-20  Removing/Replacing the Main Board Assembly
Main Board Assembly 
						

							6-28   Field Service 
6.5.16 Removing Touchpad and Speakers
To remove and replace the Touchpad and Speakers, use the following procedure:
1.Turn off the computer; disconnect the AC power adapter (if it is attached), 
and remove the battery pack and PCMCIA cards as described in Paragraphs 
6.5.1 and 6.5.2. Also disconnect the MPB (Paragraph 6.5.3) if attached.
2.Remove the Keyboard Assembly as described in Paragraph 6.5.5.
3.Remove the Heat Sink Assembly as described in Paragraph 6.5.6.
4.Remove the Display Assembly as described in Paragraph 6.5.7.
5.Remove the Top Cover Assembly as described in Paragraph 6.5.10.
6.Remove the connectors on both sides of the Touchpad Assembly and detach 
speakers from the top cover.
7.Remove the two screws that secure the Touchpad Assembly to the Top Cover 
and remove the Button Assembly, Metal Plate, and Touchpad Main Sensor 
as shown in Figure 6-21.
8.Replacement is the reverse of Steps 1-7.
Figure 6-21  Removing Touchpad Assembly
Button Assembly
Metal Plate
Touchpad
Connector 
						

							Field Service    6-29
6.5.17 Removing/Replacing the Display Bezel
To remove and replace the Display Bezel Assembly, use the following procedure:
1.Turn off the computer; disconnect the AC power adapter (if it is attached), 
and remove the battery pack and PCMCIA cards as described in Paragraphs 
6.5.1 and 6.5.2. Also disconnect the MPB (Paragraph 6.5.3) if attached.
2.Use a sharp object to remove the six bezel screw covers and remove the six 
screws.
3.Pull out and remove the Display Bezel.
4.Replacement is the reverse of Steps 1 through 3.
Figure 6-22  Removing/Replacing the Display Bezel 
						

							6-30   Field Service 
6.5.18 Removing/Replacing the LCD
To remove and replace the LCD, use the following procedure:
1.Turn off the computer; disconnect the AC power adapter (if it is attached), 
and remove the battery pack and PCMCIA cards as described in Paragraphs 
6.5.1 and 6.5.2. Also disconnect the MPB (Paragraph 6.5.3) if attached.
2.Remove the Display Bezel as described in Paragraph 6.5.17.
3.Remove three screws securing the LCD Assembly and pull up on the LCD 
Panel (Figure 6-23).
4.Tilt the LCD Panel away from the display cover; unplug the LCD Panel from 
the Display Cable Assembly (Figure 6-23) and remove the LCD Assembly.
5.Replacement is the reverse of Steps 1 through 4.
Figure 6-23  Removing/Replacing the LCD Assembly 
						

							Field Service    6-31
6.5.19 Removing/Replacing the Display Inverter Boards
To remove and replace the Display Inverter Boards, use the following procedure:
1.Turn off the computer; disconnect the AC power adapter (if it is attached), 
and remove the battery pack and PCMCIA cards as described in Paragraphs 
6.5.1 and 6.5.2. Also disconnect the MPB (Paragraph 6.5.3) if attached.
2.Remove the Display Bezel as described in Paragraph 6.5.17.
3.Gently fold back the foil around the display and unplug the inverter cable, 
CN2. 
4.Next, remove the screw securing the DC-AC Inverter Board (larger of the two 
PWBs) and the LCD ID Board (smaller of the PWBs) to the display back cover.
5.Press down on the latch (refer to Figure 6-24) and remove the Inverter Boards.
6.Replacement is the reverse of Steps 1 through 5.
Figure 6-24  Removing/Replacing the Display Inverter Boards
CN2 
						

							6-32   Field Service 
6.6 Removing/Replacing MPB FRUs
6.6.1 Removing/Replacing the Media Bay Device
To remove and replace a MPB Modular Bay Device (e.g., CD-ROM Drive or Floppy Disk 
Drive), use the following procedure:
1.Turn off the computer; disconnect the AC power adapter (if it is attached), 
and remove the battery pack and PCMCIA cards as described in Paragraphs 
6.5.1 and 6.5.2. Also disconnect the MPB (Paragraph 6.5.3) if attached.
2.Unlatch the module by pressing the latch at the base of the MPB toward the 
unlock icon (rear of MPB) (refer to Figure 6-25).
3.Simultaneously, grasp the recessed grip area on the module and pull module 
out of the MPB.
4.Installation is the reverse of Steps 1 through 3.
Figure 6-25  Installing/Removing Media Bay Devices
CD-ROM
Drive
Modular Bay
Release
Latch
Mobile Productivity
Base