
Chapter 8
Hardware TroubleshootingThis chapter explains how to troubleshoot
8.1System Startup
When you turn on the
8.1.1The SYS LED Does Not Turn On
| Table |
STEP | CORRECTIVE ACTION |
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1 | With the AC power model, make sure the power cord is properly connecting the |
| socket to an appropriate power outlet. Refer to the Hardware Specifications appendix to make sure |
| you are using the correct power source. |
| With the DC power model, make sure the power wires are properly connecting the |
| terminal to an appropriate power supply and the power supply is operating normally. Refer to the |
| Hardware Specifications appendix to make sure you are using the correct power supply. |
2 | Make sure the network module is properly installed in the |
| chapter). |
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3 | With the AC power model, make sure the fuse is not |
| to the Removing and Installing a Fuse appendix). |
4 | The LED itself or the unit may be faulty; contact your vendor. |
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8.2The ALM LED Is On
The ALM (alarm) lights when the
STEP | CORRECTIVE ACTION |
1Make sure you can feel and/or hear the fans working - working fans emit a low buzz and blow air. If the fans are not working properly, make sure the power connector is connected properly.
Contact your vendor if the fans do not work. Do not remove fans from the
Hardware Troubleshooting |