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198 Troubleshooting
• If the system does not power on, check the LED display. If the power LED
is not on, you may not be receiving AC power. Check the AC power cord to
make sure that it is securely connected.
Troubleshooting System Startup Failure
If your system halts during startup, especially after installing an operating
system or reconfiguring your system’s hardware, check for invalid memory
configurations. These could cause the system to halt at startup without any
video output.
For all other startup issues, note any system messages that appear onscreen.
See "Using the System Setup Program" on page 45 for more information.
Troubleshooting External Connections
Ensure that all external cables are securely attached to the external
connectors on your sled before troubleshooting any external devices.
See Figure 1-1 for the front-panel connectors on the sled.
Troubleshooting the Video Subsystem
1
Check the sled and power connections to the monitor.
2
Check the video interface cabling from the sled to the monitor.
Troubleshooting a USB Device
Use the following steps to troubleshoot a USB keyboard and/or mouse. For
other USB devices, go to step 5.
1
Ensure that the sled is turned on.
2
Disconnect the keyboard and mouse cables from the sled briefly and
reconnect them.
3
If the problem is resolved, restart the sled, enter the System Setup
program, and check if the nonfunctioning USB ports are enabled.
4
Swap the keyboard/mouse with a known-working keyboard/mouse.
5
If another sled is installed, connect the USB device to the sled. If the USB
device works with a different sled, the first sled may be faulty.