Owners Manual

Figure 9. AC PSU status indicator

1. AC PSU status indicator/handle

Table 9. AC PSU status indicator

Convention Power Indicator

Pattern

Description

A Green A valid power source is connected to the PSU and the PSU is

operational.

B Flashing green When the firmware of the PSU is being updated, the PSU handle

flashes green.

CAUTION: Do not disconnect the power cord or unplug the

PSU when updating firmware. If firmware update is

interrupted, the PSUs will not function.

C Flashes green

and turns off

When hot-adding a PSU, the PSU handle flashes green five times at

4 Hz rate and turns off. This indicates that there is a PSU mismatch

with respect to efficiency, feature set, health status, and supported

voltage.

CAUTION: For AC PSUs, use only PSUs with the Extended

Power Performance (EPP) label on the back.

NOTE: Ensure that both the PSUs are of the same capacity.

NOTE: Mixing PSUs from previous generations of Dell servers

can result in a PSU mismatch condition or failure to turn the

system on.

D Flashing amber Indicates a problem with the PSU.