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Field Service Guidelines 4-9
5.
To replace the whole top case assembly, reverse the removal procedures men-
tioned above. We recommend that you do the top cover screws first, then the
bottom cover screws. Make sure to test the VersaGlide before entirely securing it
to the top cover case.
6.
You do not need to remove the CPU unless you are going to replace it.
Removing/Replacing the LED Board
The procedure for removing the LED board is as follows:
1.
Turn off the computer. Follow all disassembly procedures mentioned from the
start of this section.
2.
The LED Board is located in the center rear of the system base unit. This board
alerts you to the processes presently in use on the computer.
3.
Remove the two screws and lift the board carefully out of the connections to the
system board.
Figure 4-3 The LED Board Module Assembly
Removing/Replacing the System Board and I/O Board
The system board and the I/O board are assembled together as one unit and must be re-
moved from the base unit before being separated from each other. The procedure for re-
moving the system board and I/O board is as follows:
1.
Turn off the computer. Follow all disassembly procedures mentioned from the
start of this section.
2.
Remove the two large posts from the center of the system board and the two
screws from the lower leg of the I/O Board.
3.
From the back of the unit remove the six spacers and two screws around the four
plug-in connectors.