Drive Carrier Module Led; Psu Led Status - IBM Medium J11 Hardware Installation And Maintenance Manual

PSU LEDs
Under normal conditions, the bi-tonal PSU Status OK LED will be a constant green. See also Figure 15 on
page 17. When a fault occurs, the color of the LEDs will display as shown in the following table.
Table 16. PSU LED status
PSU status (green)
Off
On
Off
Off
Front panel LEDs
The front panel displays the aggregated status of all the modules. The enclosure status LEDs located on
the front panel are labeled in Figure 14 on page 15 and they are individually described in the narrative
subsections that follow the table.
Disk drive carrier module LED
Disk drive status is monitored by an amber LED mounted on the front of each drive carrier module, as
shown in the figure below. The drive module LED conditions are defined in the table following the figure
below.
In normal operation the amber LED will be:
• Off if there is no drive present.
• Off as the drive operates.
• On if there is a drive fault.
Figure 26. Drive carrier module LED
Table 17. Drive carrier module LED
State (Amber)
Off
Off
Blinking: 1s on/1s off
On
On
48 IBM Cloud Object Storage System: Medium/Large J11/J12 Disk Enclosure Hardware Installation and
Maintenance Manual
PSU status (amber)
Off
Off
On
Blinking
Status
Enclosure is not powered on.
Disk drive module is installed and operational
SES device identity set
SES device fault bit set
Power control circuit failure
Status
No AC power on this PSU only
AC present; PSU working
correctly
PSU fault (over temperature, over
voltage, over current)
PSU firmware download is in
progress