Table
Activity | Beeps | Possible Cause | Recommended Action | |
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| |
Power LED flashes 12 times, | 12 | Health timer expired. | None. | |
once every second, followed |
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by a two second pause. |
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|
Beeps stop after third iteration |
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and the computer reboots. |
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| |
System does not power on | None | System unable to power | Press and hold the power button for less than 4 | |
and LEDs are not flashing. |
| on. | seconds. If the hard drive LED turns green, the | |
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|
| power button is working correctly. Replace the | |
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| system board. | |
|
|
| OR |
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|
|
| Press and hold the power button for less than 4 | |
|
|
| seconds. If the hard drive LED does not turn on | |
|
|
| green then: | |
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|
| 1. | Check that the unit is plugged into a |
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|
|
| working AC outlet. |
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|
| 2. | Ensure that the DC power cable is plugged |
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|
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| into the I/O panel. |
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|
| 3. | Replace the power supply. |
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|
64 Appendix A Troubleshooting