Sangoma Netborder SS7, Руководство пользователя, Страница: 199 / 317

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20.1.2 Hot-swap procedures
Please refer to the following when either power module is defective.

Locate the defective power module by examining the individual LED (if LED is distinguished, it
indicates the power module is defective).
*** WARNING
please perform the following step carefully; otherwise, it may cause the whole system
shutdown.
*** WARNING
Please do not remove the defective power module until you have worn gloves to keep from
been burned. This is due to the cover of the power module is used as heat sink for cooling.
Usually, its temperature is around 50-60 degree Celsius under full load condition.

Loose the screws of power module bracket.

Plug out the defective power module.
*** WARNING
please put aside the power module to wait for cooling down. Keep other people from toughing
it until it is cooled.

Replace a new / GOOD power module. Insert the power module into the power system till to
the end.

Check the LED of the power module, which should be in GREEN.

Check the warning LED indicating the status of total power system, which should be in
GREEN.

Tighten the screws of the power module.

If you want to test this new power module and simulate the defective situation, please refer to
Section 1.7 Installation & Testing.
Remarks: If the DC fan of the power module fails, you have to replace the power module.
Please follow the Hot-Swap Procedures for replacement.