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The I/O board contains three-pin jumper blocks. See "I/O board internal connectors
and jumpers" on page 8 for the location and description of each jumper block.
To remove the I/O board, complete the following steps:
1. Read the safety information that begins on page vii and "Installation guidelines"
2. Turn off the server and peripheral devices, and disconnect the power cords and
3. Remove the top cover (see "Top cover and bezel" on page 45).
4. Open the release latches on both ends of the I/O board and pull the board from
5. Note where each cable is connected, and then disconnect all cables from the
6. If you are instructed to return the I/O board, follow all packaging instructions,
To install the replacement I/O board, complete the following steps:
1. Connect all cables to the internal connectors on the I/O board.
2. Align the board with the card guides and insert the board in the connector.
3. Close the release latches to seat the board in the connector.
4. Install the top cover (see "Top cover and bezel" on page 45).
5. Slide the server into the rack.
6. Connect the cables and power cords (see "Connecting the cables" on page 34
48
IBM System x3950 Type 8878 and System x3950 E Type 8879: Problem Determination and Service Guide
on page 31.
all external cables necessary to replace the device.
the server slightly.
I/O board and remove the assembly from the server.
and use any packaging materials for shipping that are supplied to you.
for cabling instructions).
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