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Troubleshooting
A horizontal line or wire is visible across the monitor screen
The monitor may use thin damper wires, located approximately 1/3 of the way from the
upper and lower screen edges, to stabilize the internal aperture grille. These wires are most
obvious when the monitor displays a white background. The aperture grille allows more
light to pass through the screen for brighter colors and greater luminescence. The damper
wire is a critical part of the overall monitor design and does not negatively affect the
monitor’s function.
Power
You press the power button, but the server does not turn on
■ If the power button LED is green, the server is turned on, but you may not be seeing
an image on the monitor. For monitor troubleshooting, see “Monitor” on page 84.
■ If your server is equipped with redundant power supply modules, check the LEDs
on the power supply modules.
■ If your server is plugged into a UPS, make sure that the UPS is connected securely
to an electrical outlet, turned on, and working correctly. One way to check this is
to plug the server directly into a wall outlet, bypassing the UPS.
■ Make sure that the electrical outlet is working by plugging a working device, such
as a lamp, into the outlet, then turning it on to test the outlet.
■ Open your server and make sure that the power supply cable and power button
cable are connected correctly to the system board.
When you turn on the server, it makes several short beeps
■ The short beeps indicate the server has encountered some type of error. See “Beep
codes” on page 76.
Processor
Your server does not recognize a new processor
■ Make sure that the processor is fully seated in its socket. The processor should be
recognized automatically if it is installed correctly.