Figure 59. PSU LEDs
Table 15. PSU LED States
PSU Fail (Amber) AC Missing
(Amber)
Power (Green) Status
Off Off Off No AC power to either PSU.
On On Off PSU present, but not supplying power or PSU
alert state (usually due to critical temperature).
Off Off On Mains AC present, switch on. This PSU is
providing power.
Off Off
Flashing
AC power present, PSU in standby (other PSU
is providing power).
Flashing Flashing
Off PSU firmware download.
Off On Off AC power missing, PSU in standby (other PSU
is providing power).
On On On GEM software has lost communication with
the PSU.
On
–
Off PSU has failed. Follow the procedure in
“Removing a PSU” on page 91.
Cooling Module LEDs
Note: 5U enclosures only.
58
Lenovo Storage D1212/D1224/D3284Hardware Installation and Maintenance Guide