Acer Travelmate 5000 Maintenance Manual

							        
                               
Tamper Evident Label;
Remove label to access screw
(Label must be replaced after
servicing unit)
Remove four recessed
Torx Screws from Bottom
of Unit
Figure 5-9  Opening the Base Cover
  
Field Service 5-15 
						

							5.5.7 Removing/Replacing the Keyscan
Board
To remove and replace the Keyscan Board, perform the following procedure:
1.      Open up the base assembly as described in the previous paragraph.
2.     Gently lift the floppy drive cable up and backwards to gain access to
the Keyscan Board. 
3.Using a straight slot screwdriver, gently pry the Keyscan Board upwards
(held in place by its bottom connector). Remove the board from the
notebook (see Figure 5-10).
4.     Replacement is essentially the reverse of Steps 1 through 3 above. 
Keyscan Board
Main Board Connector
Figure 5-10  Keyscan Board, Removal/Replacement
  
5-16 Field Service 
						

							5.5.8 Removing/Replacing the IR Board
To remove and replace the IR Board, perform the following procedure:
1.      Open up the base assembly as described in the previous paragraph
(Paragraph 5.5.6).
2.     Remove the IR lens by bowing gently to the middle and removing lens.
3.     Using a straight slot screwdriver, gently pry the IR Board from its
connector. Remove the board from the notebook. 
4.     Replacement is essentially the reverse of Steps 1 through 3 above. 
IR Board
Figure 5-11  IR Board, Removal/Replacement
  
Field Service 5-17 
						

							5.5.9 Removing/Replacing the Floppy Drive
To remove and replace the Floppy Drive, reference Figure 5-12 and perform
the following procedure:
1.      Open up the base assembly as described in the previous paragraph
(Paragraph 5.5.6).
2.      Remove the Keyscan Board as described in Paragraph 5.5.7.
3.    Unlock the Zero Insertion Force connector holding the floppy cable to
the Main Board. Disconnect the Floppy Interface cable.
4.     Using a No. 9 Torx head driver, remove the screw in the right front
corner of the notebook securing the drive to the base assembly.
5.     Replacement is essentially the reverse of Steps 1 through 4 above. 
Floppy Drive Assembly
Remove Keyboard Scan Board; 
remove floppy connector from
Main Board
Remove two screws from right
side of Floppy Drive
Figure 5-12  Floppy Drive, Removal/Replacement
  
5-18 Field Service 
						

							5.5.10 Removing/Replacing the LED Board
To remove and replace the LED Board Assembly, reference Figure 5-13 and
perform the following procedure:
1. Open up the base assembly as described in the previous paragraph
(Paragraph 5.5.6).
2.  Unplug the cable connector from J11 on the Sound/PCMCIA Board. 
3.Remove the screw securing the LED Board to the metal bracket above the
Expansion Bus Connector. Remove the LED Board assembly.
4. Replacement is essentially the reverse of Steps 1 through 4 above. 
 
LED Board Assembly
Figure 5-13  The LED Board, Removal/Replacement
  
Field Service 5-19 
						

							5.5.11 Removing/Replacing the Sleep
Switch Board
To remove and replace the Sleep Switch Board Assembly, reference Figure
5-14 and perform the following procedure:
1.      Open up the base assembly as described in the previous paragraph
(Paragraph 5.5.6).
2.    Unplug the cable connector from J11 on the Sound/PCMCIA Board. 
3.     Remove the screw securing the LED Board to the metal bracket above
the Expansion Bus Connector. Remove the LED Board assembly.
4.     Replacement is essentially the reverse of Steps 1 through 4 above. 
To Connector J12 
on Main Board
Sleep Switch Board Assembly
Figure 5-14  Sleep Board Assembly, Removal/Replacement
  
5-20 Field Service 
						

							5.5.12 Removing/Replacing the
Sound/PCMCIA Board
To remove and replace the Sound/PCMCIA  Board, reference Figure 5-15
and perform the following procedure:
1.      Open up the base assembly as described in the previous paragraph
(Paragraph 5.5.6). Remove any installed PCMCIA options (Paragraph
5.5.2).
2.    Unplug the cable connectors from J5, J10, J11, J12,  on the
Sound/PCMCIA Board. 
3.     Gently rock and lift the board to dislodge from the bottom connector
holding it to the Main Board.  Remove the Sound/PCMCIA Board
assembly.
4.     Replacement is essentially the reverse of Steps 1 through 3 above. 
Figure 5-15  Sound/PCMCIA Board, Removal/Replacement
  
Field Service 5-21 
						

							5.5.13 Removing/Replacing the Main Board
To remove and replace the Main Board Assembly, reference Figure 5-16 and
perform the following procedure:
1.      Open up the base assembly as described in the previous paragraph
(Paragraph 5.5.6).
2.     Remove the Keyscan Board, the IR Board, the Floppy Drive, the
Sound/PCMCIA Boards as described in previous paragraphs. Also
remove the Display Bezel (Paragraph 5.5.14) and remove the right
side screw from the DAB Board to free the grounding strap that
attaches to the Main Board.
3.    Remove the LED Board and install on the replacement Main Board
Assembly.
4.     Remove the Keyscan Board, the IR Board, the Floppy Drive, the
Sound/PCMCIA Boards as described in previous paragraphs. 
5.     Disconnect the LCD cables from P90 and P91 (upper center of the Main
Board).
6.     Remove the six screws from around the perimeter of the Main Board. 
7.     Remove the screw holding the Latch Spring between the two metal
brackets at the top of the Main Board. Transfer this spring to the
replacement board. 
8. Using tweasers, remove the connector door spring from the rear
connector doors and from around the plastic post near the top center
of the Main Board.  Save this spring for later installation.
9. Replacement is essentially the reverse of Steps 1 through 8 above. 
10.  When  installing the replacement Main Board, insert the front of the
board into the base at an angle and then set the board down over the
positioning pins built into the base. Ensure that the rear connector
doors are installed correctly (lip towards bottom of base), the Latch
Spring is correctly installed on the replacement Main Board, the door
spring hooked to each rear connector door and looped over the notch
at the base of the round plastic standoff.  Also check that the heat
sink is correctly installed on the replacement board.  
c
Caution:  Ensure that you remove the protective plastic film on the top
of the heat sink on the replacement Main Board.  Otherwise, proper
heat transfer will not occur that could damage the unit.
11. Replace all connectors and boards; ensure that connectors are snug.
Reattach the base cover, keyboard, grounding strap underneath the
right side of the DAB Board. Install the Display Bezel and verify that
the notebook is functioning properly.
  
5-22 Field Service 
						

							1
Grounding strap goes under
rightmost screw holding DAB
Board to Cover Assembly.
Shown with 
Display Bezel 
Removed
Remove LCD Bezel; disconnect grounding
strap from Main Board to DAB Board.
Remove PCMCIA/Sound Board,
Keyscan Board , IR Board and Floppy Drive2
Remove screws and cable connections
from Main Board; then remove board.3
Figure 5-16  Main Board, Removal/Replacement
  
Field Service 5-23 
						

							5.5.14 Removing/Replacing the Display
Bezel
To remove the Display Bezel (to gain access to Cover -Display FRU’s), refer to
Figure 5-17 and perform the following procedure:
1.      Turn off the computer and disconnect the ac power adapter (if it is
attached). 
2.     Disconnect any peripheral device interface cables from the external
interface connectors.
3.      With the notebook open, remove the two hinge covers  by squeezing
them and gently prying upwards with a small flat-blade screwdriver.
4.      Using a small flat-blade screwdriver, gently remove the two screw
covers near the base of the LCD/Cover Assembly. Remove the two
screws located behind the screw covers. 
c
Caution:  If the notebook is powered up with the LCD bezel removed,
you can be exposed to high voltages which could result in shock and
equipment damage.  Ensure that the batteries and AC adapter are re-
moved from the notebook when working on the LCD/Display assembly.
5.      The display bezel is held in place with clips and can be removed by
gently prying each snap loose. 
6.     To reinstall the Display Bezel, reverse the removal procedure described
in Steps 1 through 5 above. Carefully reposition the microphone unit
at the top of the display and ensure all cables are tucked in before
closing up the Cover -Display Assembly.
Step 1: Remove two
Snap On Plastic Hinge
Covers
Step 2: Remove two plugs and remove recessed screws..
Step 3: Gently pry off the
Display Bezel (held by clips)
Figure 5-17  Display Bezel, Removal/Replacement
  
5-24 Field Service