Acer Extensa 900 Maintenance Manual

							Field Service    6-13
Figure 6-7  Installing/Removing PCMCIA Options
6.5.3 Installing/Removing the Mobile Productivity Base
The procedure for removing and replacing the Mobile Productivity Base assembly is as 
follows:
1. Power down the notebook and disconnect the AC adapter if installed.
2.   Slide the lever release latch to the front of the MPB to release the docking 
lever (refer to Figure 6-8).
3.Swing the Docking Lever outward a full 90 degrees from the side of the MPB. 
						

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Figure 6-8  Removing/Replacing the MPB
4.The swing lever also pushes the computer up slightly off the MPB allowing 
you to grasp the computer on the left hand side.
5. Lift the computer up slightly on the left hand side. Hold the computer securely 
on both ends and pull the computer out of the MPB, left side first as shown 
in Figure 6-8
6.Close the lever and close the expansion door on the bottom of the computer.
7.To replace the notebook in the MPB, turn the notebook over and open the 
expansion door (slide the door toward the center of the notebook).
8.Slide the Release latch toward the front of the MPB to release the lever; then 
swing the lever completely away from the MPB until the lever is 90 degrees 
open from the side of the MPB.
Lever Release
Latch
Docking/
Undocking
Lever
Left Side
Right 
Side 
						

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9.Slide the computer into the MPB, right side first, ernsuring that the guides 
on both the computer and the docking base are securely hooked; then rest 
the computer on the base.
10.Press and hold down the computer; then swing the lever toward the MPB 
until the latch release locks the computer in place.
6.5.4 Removing/Replacing the Hard Disk Drive Assembly
The procedure for removing and replacing the Hard Disk Drive assembly is as follows:
1. Power down the notebook,  disconnect the AC adapter, if installed, and remove 
the battery pack as described in Paragraphs 6.5.1 and 6.5.2.
2.Disconnect the Mobile Productivity Base and any installed PCMCIA options.
3. Turn the computer over and remove the hard disk drive bay cover (refer to 
Figure 6-9).
4. Grasp the drive loop and remove the drive from the notebook.
Figure 6-9  Removing/Replacing the Hard Disk Drive Module
Drive
Removal
Loop
HDD
Access
Cover 
						

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5.Store the HDD in an antistatic bag.
6.Replacement is the reverse of Steps 1 through 5.
6.5.5 Removing/Replacing the Keyboard Assembly
The procedure for removing and replacing the keyboard assembly is as follows:
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 four screws near the display hinges (rear of the notebook) as 
shown in Figure 6-10.
3.Snap out and pull up the Status Panel (refer to Figure 6-10).
Figure 6-10  Removing the Keyboard Assembly
4.Lift up the Keyboard Assembly to free it from the notebook and then flip the 
keyboard to the left side of the notebook as shown in Figure 6-10.
Lift up and flip 
Keyboard to the left3
Remove Status
Panel Screws1
4Unplug Keyboard
Connectors
2Snap out and
pull up Status
Panel 
						

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5.Unplug the keyboard connectors (CN5 and CN14) and set aside the Keyboard 
Assembly.
6.Replacement is essentially the reverse of Steps 1 through 5.
6.5.6 Heat Sink Assembly Removal/Replacement
To remove and replace the Heat Sink 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 four screws securing the Heat Sink Assembly to the notebook 
and remove the heat sink.
4.Replacement of the Heat Sink Assembly is the reverse of Steps 1 through 3.
Figure 6-11  Heat Sink Assembly Removal/Replacement
1
Remove Keyboard
2Remove four screws
and remove Heat Sink
Assembly 
						

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6.5.7 Display Assembly Removal/Replacement
To remove and replace the Display 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.Refer to Figure 6-12 and remove the two rear screws that secure the Display 
to the notebook housing. Note: You don’t have to remove the leftmost screw.
Figure 6-12  Removing/Replacing the Display Assembly
5.Remove the screw securing the Display Cable to the Main Board and unplug 
the Display Cable (CN1) and the Inverter Cable (CN8).
6.Remove the Display Assembly from the Base Assembly.
7.Replacement is the reverse of Steps 1 through 6.
Remove Rear
Display Screws 1
CN8
CN1
2Remove Display Cable
Screw And Unplug Two 
Cables (CN1, CN8) 
						

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6.5.8 Removing/Replacing the LED/Microphone Board 
Assembly
To remove and replace the LED 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 two screws that secure the LED Board Assembly and unplug 
cable connector CN7; remove the LED Board Assembly.
6.Replacement is the reverse of Steps 1 through 5.
Figure 6-13 Removing/Replacing the LED/Microphone Board Assembly
1
Remove Keyboard
2Remove Heat Sink
3Remove two screws
and Connector CN7
CN7 
						

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6.5.9 Removing/Replacing the CPU Board
To remove and replace the CPU 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 securing the CPU Board to the Main Board and pull up to 
remove the board from connector J1.
5.Replacement is the reverse of Steps 1 through 4.
Figure 6-14  CPU Board Assembly Removal/Replacement
J1
1Remove Keyboard and 
Heat Sink Assemblies
2Remove screw and 
Cable Connector at J1 
						

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6.5.10 Removing/Replacing the Top Cover
To remove and replace the Top Cover 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 four screws from the bottom of the base assembly.
6.Turn the base assembly over and remove Touchpad/Speaker connector 
CN19.
7.Remove four screws from the four corners of the top cover (Figure 6-14).
8.Beginning from the left side of the unit, unsnap the top cover from the base 
assembly.
9.Replacement is the reverse of Steps 1 through 8. 
						

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Figure 6-15  Removing/Replacing the Top Cover
3Unplug Speaker 
Connector CN19 an
remove screws at fo
corners
1
2Remove keyboard and
Heat Sink Assemblies
Remove four Screws
at Bottom of Main Unit
4Beginning at left side, 
unsnap top cover
from base assembly