Zippy MX3-5750P - Manual (Page 7)

1.8 Hot-swap procedures
Please refer to the following when either power module is defective.
1) 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.
2) Loose the screws of power module bracket.
3) Plug out the defective power module.
*** WATNING:
Please put aside the power module to wait for cooling down. Keep other people from
toughing it until it is cooled.
4) Replace a new / GOOD power module. Insert the power module into the power
system till to the end.
5) Check the LED of the power module, which should be in GREEN.
6) Check the warning LED indicating the status of total power system, which should
be in GREEN.
7) Tighten the screws of the power module.
8) 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.