C H A P T E R 2 |
Troubleshooting |
This chapter contains information on troubleshooting procedures, power-on self-test (POST) codes and technical support contacts.
This chapter includes the following sections:
Before troubleshooting your specific server problem, answer the following questions:
After you have assessed the problem and noted your current configuration and environment, you can choose from several ways to troubleshoot your server:
Improperly set controls and loose or improperly connected cables are common causes of problems with hardware components. When investigating a system problem, first check all the external switches, controls, and cable connections. See Section 2.2.1, Performing an External Visual Inspection.
If this does not resolve your problem, then visually inspect the system's interior hardware for problems such as a loose card, cable connector, or mounting screw. See Section 2.2.2, Performing an Internal Visual Inspection.
1. Turn off the system and any attached peripherals.
2. Verify that all power cables are properly connected to the system box, the monitor, and the peripherals.
3. Inspect connections to any attached devices, including network cables, keyboard, monitor, and mouse, as well as any devices attached to the serial port.
1. Shut down the operating system, if necessary.
2. Disconnect the power cord from the back of the system box.
3. Turn off any attached peripherals.
4. Remove the server cover, using the procedures in Section 4.2, Installation Precautions.
Caution - Some components, such as the heatsink, can become extremely hot during system operations. Allow these components to cool before handling them. |
5. Verify that the interior components are fully seated in their sockets or connectors and that the sockets are clean.
6. Verify that all cables inside the system are firmly attached to their respective connectors.
8. Reconnect the power cord to the system box, the monitor and any attached peripherals.
TABLE 2-1 lists problems that might arise as you use your server. Possible solutions are listed for each problem. If the solutions listed here do not fix the problem, run the appropriate diagnostic test (see Chapter 3).
Server does not power on when you press the front panel power button. |
Keep notes on the following situations in case you need to call for service:
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CD or DVD does not eject from the media tray when you press the Eject button. |
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Server does not power off when the front panel power button is pressed. |
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An external device connected to a USB connector does not work. |
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1. Turn off the server by pressing the Power button. 2. Check to make sure that the power and data cables are connected to the disk drive and that the pins in the cable and connector are not bent. |
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Server appears to be in low-power mode, but the Power button LED does not blink. |
The power-indicator LED only blinks when all server components are in low-power mode. A tape drive might be connected to your server. Because tape drives do not enter low-power mode, the power-indicator LED does not blink. |
Hung or frozen server: No response from mouse or keyboard or any application. |
Try to access your system from a different server on the network.
If the above procedures do not work: See Section 1.4.2, Powering Off the Server for more detailed information. |
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For information removing and replacing DIMMs, see Section 4.5.9, Dual Inline Memory Modules |
If the troubleshooting procedures in this chapter fail to solve your problem, see TABLE 2-2, which lists the Sun web sites and telephone numbers for additional technical support.
Copyright © 2007, Sun Microsystems, Inc. All Rights Reserved.