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| Power Supply Troubleshooting |
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| Table | Troubleshooting Matrix (Dual Power Supply) |
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| Supply Bad |
| Supply Good |
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| Lights |
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| Lights |
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| Front Panel | on Back |
| on Back |
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| Lights |
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| of Power |
| of Power |
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| Supply |
| Supply |
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| SwitchesPowerON |
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| System | PowerLogicSwitchGood LED |
| FailSupplyPowerLED (Red) |
| TemperatureOverLED (Red) | GoodSupplyPowerLight) |
| TemperatureOverLED (Red) | Fan | GoodSupplyPowerLight |
| TemperatureOverLED (Red) | Fan | Corrective |
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| Status |
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| Action |
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| Power | O |
| O |
| O | O |
| O | O | O |
| O | O | Y | Replace Power |
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| Supply | n |
| n |
| ff | ff |
| ff | n | n |
| ff | n | e | Supply/Fan |
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| voltage out |
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| of range |
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| Power | O |
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| O | O |
| O | O | O |
| O | O | Y | Fix cause of |
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| Supply | n |
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| ff | ff |
| n | n | n |
| ff | n | e | overheat, else |
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| overheat |
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| s | replace faulty |
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| Power Supply |
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| Fan Failure | O |
| O |
| O | O |
| O | O | O |
| O | O | Y | Replace Power |
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| ff | ff |
| n | ff | n |
| ff | n | e | Supply/Fan |
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| Chassis | O |
| O |
| O | O |
| O | O | O |
| O | O | Y | Fix cause of |
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| Overheat | n |
| ff |
| n | n |
| ff | n | n |
| ff | n | e | overheat, else |
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| s | power down |
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| immediately |
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Shaded text in table denotes abnormal indications.
| Diagnostics/Troubleshooting | |
Installer’s/User’s Manual |