10.Disconnect all power cords and external cables.
11.Remove the side cover (see “Removing the
12.Remove any adapters that impede access to jumper JP6.
13.Move jumper JP6 to back to pins 1 and 2 for normal operation.
14.Replace any adapters that you removed; then, install the side cover (see “Installing the
15.Lock the side cover if you unlocked it during removal.
16.Reconnect the external cables and power cords; then, turn on the attached devices and turn on the server.
The function of each switch and jumper on the system board is described in
Solving power problems
Power problems can be difficult to solve. For example, a short circuit can exist anywhere on any of the power distribution buses. Usually, a short circuit will cause the power subsystem to shut down because of an overcurrent condition. To diagnose a power problem, use the following general procedure:
1.Turn off the server and disconnect all ac power cords.
2.Check for loose cables in the power subsystem. Also check for short circuits, for example, if a loose screw is causing a short circuit on a circuit board.
3.Remove the adapters and disconnect the cables and power cords to all internal and external devices until the server is at the minimum configuration that is required for the server to start (see “Solving undetermined problems” on page 124 for the minimum configuration).
4.Reconnect all ac power cords and turn on the server. If the server starts successfully, replace the adapters and devices one at a time until the problem is isolated.
If the server does not start from the minimum configuration, replace the components in the minimum configuration one at a time until the problem is isolated.
Solving Ethernet controller problems
The method that you use to test the Ethernet controller depends on which operating system you are using. See the
Try the following procedures:
vMake sure that the correct device drivers, which come with the server, are installed and that they are at the latest level.
vMake sure that the Ethernet cable is installed correctly.
–The cable must be securely attached at all connections. If the cable is attached but the problem remains, try a different cable.
–If the Ethernet controller is set to operate at 100 Mbps, you must use Category 5 cabling.
–If you directly connect two servers (without a hub), or if you are not using a hub with X ports, use a crossover cable. To determine whether a hub has an X port, check the port label. If the label contains an X, the hub has an X port.
vDetermine whether the hub supports
