Acer Extensa 900 Maintenance Manual

							Field Service    6-33
6.6.2 Removing/Replacing the MPB Battery
To remove and replace an MPB battery pack or dummy battery pack, 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.Using your thumbs, unlock the two battery locks at each side of the MPB 
(refer to Figure 6-26).
3.Pull the module out of the MPB.
4.Installation is the reverse of Steps 1 through 3.
Figure 6-26  Installing/Removing Battery Pack in MPB
Unlocking the Battery
Battery Groove
Removing the Battery 
						

							6-34   Field Service 
6.6.3 Removing/Replacing the MPB Housing
To remove and replace the MPB housing, 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.Using your thumbs, unlock the two battery locks at each side of the MPB 
(refer to Figure 6-26).
3.Pull the module out of the MPB.
4.Slide the Lever Release Latch forward to release the Docking Lever; extend 
Docking Lever 90 degrees from the side of the MPB.
5.Remove fourteen screws from the top of the MPB as shown in Figure 6-27.
6.Lift up on the top section of the MPB Housing (from the left side as shown in 
Figure 6-27) then pull to remove the top section of the MPB.
7.Replacement is the reverse of Steps 1 through 6.
Figure 6-27  Removing/Replacing the MPB Housing
A
Lever Release
Latch
Dock Release 
Lever
Upper Cover of
Mobile Productivity Base
14 Screws
B
1
2
3
Remove ScrewsExtend Dock 
Release lever
Lift and Pull Out
Upper Cover 
						

							Field Service    6-35
6.6.4 Removing/Replacing the Docking Cable
To remove and replace the MPB Docking Cable, 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.Using your thumbs, unlock the two battery locks at each side of the MPB 
(refer to Figure 6-26); pull the battery pack out of the MPB.
3.Remove the MPB Housing as described in Paragraph 6.6.3.
4.Remove two screws securing the Docking Cable to release the assembly (refer 
to Figure 6-28).
5.Remove the four screws securing the Docking Cable assembly to the Docking 
Mechanism and remove the Docking Cable.
6.Replacement is essentially the reverse of Steps 1 through 5.
Figure 6-28  Removing/Replacing the MPB Docking Cable
Release Docking Cable
Remove Docking Cable Screws 
						

							6-36   Field Service 
6.6.5 Removing/Replacing the Docking Mechanism
To remove and replace the MPB Docking Mechanism, 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.Using your thumbs, unlock the two battery locks at each side of the MPB 
(refer to Figure 6-26); pull the battery pack out of the MPB.
3.Remove the MPB Housing as described in Paragraph 6.6.3.
4.Remove the Docking Cable as described in Paragraph 6.6.4.
5.Remove the two screws that secure the Docking Mechanism to the bottom 
section of the housing and remove the Docking Mechanism.
6.Replacement is the reverse of Steps 1 through 5.
Figure 6-29  Removing/Replacing the Docking Mechanism
Docking Mechanism 
						

							Field Service    6-37
6.6.6 Removing/Replacing the MPB DC-DC Converter
To remove and replace the MPB DC-DC Converter 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.Using your thumbs, unlock the two battery locks at each side of the MPB 
(refer to Figure 6-26); pull the battery pack out of the MPB.
3.Remove the MPB Housing as described in Paragraph 6.6.3.
4.Remove the screw that secures the DC-DC Converter to the bottom section 
of the MPB housing and remove the DC-DC-Converter.
5.Replacement is the reverse of Steps 1 through 4.
Figure 6-30  Removing/Replacing the MPB DC-DC Converter Board
DC-DC Converter
CN8, CN9 
						

							6-38   Field Service 
6.6.7 Removing/Replacing the MPB Main Board Assembly
To remove and replace the MPB 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.Using your thumbs, unlock the two battery locks at each side of the MPB 
(refer to Figure 6-26); pull the battery pack out of the MPB.
3.Remove the MPB Housing as described in Paragraph 6.6.3.
4.Remove the MPB Docking Cable and Docking Mechanism as described in 
Paragraphs 6.6.4 and 6.6.5.
5. Remove the screw that secures the DC-DC Converter to the bottom section 
of the MPB housing and remove the DC-DC-Converter.
6. Remove the DC-In and Battery Charger Cable Connectors (CN 13 and CN10).
7. Remove the 12 screws that secure the Main Board to the bottom section of 
the housing. Then pull up on the main board and remove it from the unit.
8. Replacement is the reverse of Steps 1 through 7.
Figure 6-31  Removing/Replacing the MPB Main Board Assembly
CN13CN10
12 Screws
Main Board
Assembly 
						

							                                                                                        Notebook Schematic Diagrams  A-1
A
Notebook Schematic Diagrams
A.1 Introduction
This section contains schematic diagrams for the Extensa 900 Series Notebook 
Computer. Logic schematics for the Mobile Productivity Base are provided in Appendix 
B of this manual. 
						

							A-2   Notebook Schematic Diagrams
Figure A-1  Notebook Main Board Logic Diagrams (Sheet 1 of 30) 
						

							                                                                                     Notebook Schematic Diagrams  A-3
Figure A-1  Notebook Main Board Logic Diagrams (Sheet 2 of 30) 
						

							A-4   Notebook Schematic Diagrams
Figure A-1  Notebook Main Board Logic Diagrams (Sheet 3 of 30)