Interpreting LEDs
Component-Specific LEDs
This table lists component-specific fault LEDs that light when the component requires service.
You can use these LEDs to help locate a component that the fmadm faulty command reports as
faulty. Where indicated, these components also display blue Ready to Remove LEDs that must
light before you can remove the component.
Note - Component LEDs might not be lit when the component is faulty. Rely on software to
determine if a component is faulty. See “Checking for Faults” on page 35.
Component LEDs That Indicate Service Is Required and Allowed
Battery LED on SP or SPP containing it
CMIOUs ■ CMIOU Service Required LED
■ Blue Ready to Remove LED
DIMMs ■ CMIOU Service Required LED on CMIOU containing faulted DIMM
■ DIMM Fault Remind LED, visible only when the CMIOU cover is removed and the
DIMM fault remind button is pressed
eUSB disks CMIOU Service Required LED on CMIOU containing eUSB disk
Fan modules Fan Service Required LED on faulted fan
PCIe cards/carriers PCIe Fault LED on PCIe carrier
PDECBs ECB Fault LED on the CMIOU or switch chassis that contains the faulty PDECB
Power supplies PS Service Required LED on faulted power supply
SPs ■ SP Service Required LED on faulted SP
■ Blue Ready to Remove LED
Switch units ■ Switch Unit Service Required LED
■ Blue Ready to Remove LED
Related Information
■
“Servicing CMIOUs” on page 83
■
“Servicing DIMMs” on page 105
■
“Servicing Fan Modules (CMIOU Chassis)” on page 179
■
“Servicing Fan Modules (Switch Chassis)” on page 183
■
“Servicing PCIe Cards” on page 141
■
“Servicing Power Supplies” on page 165
■
“Servicing SPs” on page 117
Detecting and Managing Faults 45
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