Bull 296/C3, Manual, Page: 113 / 123

Appendix D. Component and Attention LEDs
This chapter contains information about component LEDs, which assist in identifying failing components in
your system.
The LEDs are located either on the component itself or on the carrier of the component (for example,
memory card, fan, memory module, CPU). LEDs are either green or amber.
Green LEDs indicate either of the following:
v
Electrical power is present.
v
Activity is occuring on a link. (The system could be sending or receiving information.)
Amber LEDs indicate a fault or identify condition. If your system or one of the components on your system
has an amber LED turned on or blinking, identify the problem and take the appropriate action to restore
the system to normal.
The following table identifies the location, color and status of your system component LEDs.
Unit
(FRU) LED
Function Location Viewable
Location LED
Color OFF ON Blink
Power and Packaging LEDs
System
Attention Operator
Panel and
Rear
External
Front and
Rear
Amber Normal Fault Identify
Power Green No ac System On Standby
Fan Identify Part Internal Amber Normal N/A Identify
Power Supply
AC Input
Good Part External Green No Input Input Good N/A
Fault
/Identify Part External Amber Normal Fault 1. Identify
2.Comm. Fault
DC Output
Good
Part External Green
All Pwr Sup
Outs Off All PS
Outputs On Blinj if PS
micro or comm
link failed
Disk Drives Activity DASD can External Green No Activity N/A Activity
Identify DASD can External Amber Normal N/A Identify
CARD LEDs
PCI Slots
Power Socket External Green Off Power N/A
Identify Socket External Amber Normal N/A Identify
Memory DIMMs Identify
Memory
Connector Internal Only Amber Normal N/A Identify
System
Backplane
Identify
Planar Internal Only Amber Normal N/A Identify
DASD
Backplane Identify Card Internal Amber Normal N/A Identify
Media
Backplane Identify Card Internal Amber Normal N/A Identify
Service
Processor Card
Identify
Card Internal Amber Normal N/A Identify
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