IBM 6C4 - Manual (Page 31)

Unit
(FRU) LED
Function Location LED
Color OFF ON Blink
Power and Packaging LEDs
Memory
DIMMs Identify Processor
Housing
(Top) Amber
(8x) Normal Identify
CEC
Backplane Identify CEC
Backplane Amber
(1x) Normal Identify
Processor
Board Identify Processor
Housing
(Top) Amber
(1x) Normal Identify
PCI Riser
Card Identify PCI Riser
Card Amber
(1x) Normal Identify
Disk Drive
Backplane No LED
PCI Adapter Table
LED Inactivity Active Identify Action
Green + Amber (2
LEDs) Green - Off
Amber - Off Green - On
Amber - Off Green - On
Amber - Blinking Green - Off
Amber - Blinking
Chapter 2. Using the System 13