IBM HS40 - BladeCenter - 8839 Maintenance And Troubleshooting Manual page 47

The following illustration shows the LEDs on the I/O board.
Board error
(DS7A2)
Processor
board
error LED (DS8A2)
Light path
diagnostics
button (S8A1)
Light path
diagnostics LED (green)
(DS8A1)
Secondary IDE
error LED (DS6H1)
BMC error LED (DS7B1)
NMI error LED (DS7A3)
Temperature error LED (DS7A4)
I/O board error LED (DS7A1)
Primary IDE
error LED (DS2H1)
Chapter 4. Installing options
37