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Back to Table of Contents
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Back to SBC 7000 Series CRUs
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| tip | Use ESD protective device |
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The
chassis configured for AC power is is shipped with two dual redundant AC power supplies. Dual redundancy means the power supplies are hot-swappable. In other words, you can replace a power supply without powering down the platform (provided that the redundant Power Supply is operational)....
The figure AC Power Supply below depicts a dual redundant configuration. The product codes for AC Power Supplies are:
- SBC-7000-PSUAC
- SBC-7000-PSUAC-SPARE
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| 0 | Figure |
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| 1 | AC Power Supply |
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| 3 | AC Power Supply |
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The Power OK (POK) LED is displayed at the right hand bottom of the Power Suppy panel (marked in yellow). |
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| Before replacing a Power Supply in a redundant Power Supply configuration, verify the status of the redundant Power Supply. The Power OK (POK) LED status must be solid green. Removing the Power Supply when the redundant supply does not show a solid green status, may cause the system to power down. Contact Sonus Customer Support if required. |
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To replace a faulty power supply, the following items are needed:
- Electrostatic discharge (ESD) strap
- Replacement AC power supply
- A #2 Phillips-head screwdriver
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| To prevent damage from electrostatic discharge, use the provided ESD strap when handling the power supplies. |
Replacing an AC Power Supply
Perform the following procedure to replace a Power Supply:
- Verify the Power OK (POK) green LED of the redundant Power Supply is lit.
- Attach an Electrostatic Discharge wrist strap to the ESD grounding point on the back panel of the chassis, and place the other end around your wrist. Follow the instructions provided in the section Connecting Electrostatic Discharge Wrist Strap on SBC 7000.
Move the release lever to the left and pull the Power Supply out from the rear of the chassis.
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| 1 | Replacing an AC Power Supply |
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Install the replacement AC Power Supply to the
chassis by sliding it forward until you hear the latch click in place.
The AC Power Supply has two LEDs per each AC Line, OK and Power OK (POK).The AC Line OK is turned on when the power supply is connected to the AC power source to verify the existence of the AC power. The Power OK (POK) indicates that the power supply is enabled and it is supplying the
with power.- Observe that the POK green LED on the newly-inserted Power Supply is solid green. It takes maximum 1 minute for the Power Supply to turn on.
From the application, ensure that no Power Supply alarms are generated.
CRU Storage
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All
CRUs are shipped in electrostatic discharge bags and must be handled using appropriate ESD precautions. The storage environment for these CRUs are:
- Humidity must be less than 95% (non-condensing)
- Temperature must be between -40C and +70C.