Universal Serial Bus (USB) port problems
• Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
• If an action step is preceded by '(Trained technician only)', that step must be performed only by a Trained
technician.
• Go to the IBM support website at http://www.lenovo.com/support to check for technical information,
hints, tips, and new device drivers or to submit a request for information.
Table 32. Universal Serial Bus (USB) port problems and actions
Symptom
Action
A USB device does not work.
1. Make sure that:
• The correct USB device driver is installed.
• The operating system supports USB devices.
2. Make sure that the USB configuration options are set correctly in the Setup
utility (see “Using the Setup utility” on page 107 for more information).
3. If you are using a USB hub, disconnect the USB device from the hub and
connect it directly to the server.
Solving power problems
Use this information to solve 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:
Step 1.
Turn off the server and disconnect all power cords.
Step 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.
Step 3.
Check the lit LEDs on the light path diagnostics panel (see “Light path diagnostics LEDs” on
page 135).
Step 4.
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 161).
Step 5.
Reconnect all ac power cords and turn on the server. If the server starts successfully, reseat the
adapters and devices one at a time until the problem is isolated.
If the server does not start from the minimum configuration, see “Power-supply LEDs” on page 139 to
replace the components in the minimum configuration one at a time until the problem is isolated.
Solving Ethernet controller problems
Use this information to solve the Ethernet controller problems.
The method that you use to test the Ethernet controller depends on which operating system you are using.
See the operating-system documentation for information about Ethernet controllers, and see the Ethernet
controller device-driver readme file.
Try the following procedures:
160
System x3500 M4 Installation and Service Guide
Summary of Contents for System x3500 M4
Page 1: ...System x3500 M4 Installation and Service Guide Machine Type 7383 ...
Page 6: ...iv System x3500 M4 Installation and Service Guide ...
Page 14: ...xii System x3500 M4 Installation and Service Guide ...
Page 140: ...126 System x3500 M4 Installation and Service Guide ...
Page 180: ...166 System x3500 M4 Installation and Service Guide ...
Page 194: ...180 System x3500 M4 Installation and Service Guide ...
Page 978: ...964 System x3500 M4 Installation and Service Guide ...
Page 1002: ...988 System x3500 M4 Installation and Service Guide ...
Page 1160: ...1146 System x3500 M4 Installation and Service Guide ...
Page 1164: ...1150 System x3500 M4 Installation and Service Guide ...
Page 1172: ...Taiwan BSMI RoHS declaration 1158 System x3500 M4 Installation and Service Guide ...
Page 1181: ......
Page 1182: ......