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SUPERSTORAGESYSTEM SSG-2028R-DN2R24L User's Manual
6-9
Changing the Power Supplies
The SC227 chassis has two redundant power supplies. The power modules are
hot-swappable, enabling the power supplies to be changed without powering down
the system. These power supplies are auto-switching capable. This enables the
power supply to automatically sense and operate at a 100v to 240v input voltage.
An amber light will be illuminated on the power supply when the power is off. An
illuminated green light indicates that the power supply is operating.
Figure 6-11. Removing the Power Supply
1
3
Release Tab
Changing a Power Supply
1. Determine which power supply needs to be replaced and unplug the power
cord to that module.
2. Push the release tab (on the back of the power supply) as illustrated, to
release the power module from the chassis.
3. While holding down the release tab, pull the power supply out using the
handle provided on the power module.
4. Replace the failed power module with the same model power supply.
5. Push the new power supply module into the power bay until the tab clicks into
the locked position.
6. Plug the AC power cord back into the power module and the module will
automatically power-up.
6-12
6-10 Power Distributor Board
The SC227 chassis requires two power distributor boards. These boards are located
behind the power supplies and are separated with a set of spacers. In the unlikely
event that a board needs to be replaced, use the following instructions.
Figure 6-12. Installing the Power Distributor Board and Spacers
Changing the Power Distributor Board
1. Power down the system and remove the power cords from the rear of both
power supplies as described in Section 6-3. Remove the covers as described
in Section 6-4 and Section 6-5. Remove the motherboard modules as
described in Section 6-7.
2. Remove the two upper screws securing the upper power distributor board to
the spacers and set them aside for later use.
3. Lift the upper power distributor board up and out of the chassis.
4. Twist the spacers clockwise to remove them and set them and set them aside
for later use.
5. Lift the lower power distributor board up and out of the chassis.
6. Replace the lower power distributor board with a new one of the same type.
7. Insert the spacers into the mounting holes on the lower power distributor
board and tighten them by turning them counter-clockwise.
8. Stack the new upper power distributor board on top of the spacers.
9. Plug the AC power cords back into both of the power modules, replace the
chassis covers and power up the system.
Chapter 6: Advanced Chassis Setup
PDB Spacers
6-13
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