
technical reference guide
4–5
Troubleshooting
LEDs
Several LEDs are on the front bezel of the workstation. See the following sections for a detailed
description of these functions.
power and system LEDs
The power and system LEDs indicate the overall state of the system:
activity LED
The Activity LED indicates the state of disk and drive activity on the system.
NOTE
: The Activity LED is only active on systems purchased after March 2003.
NOTE:
The Activity LED automatically communicates with IDE HDD or optical drives. To
communicate with SCSI drives, a SCSI LED activity cable must connect the SCSI card and the
system board.
Power LED
System LED
State
Off
Off
Off or on Standby
On (green)
Solid green
Running normally
On (green)
Blinking green (1/sec.)
Booting
On (green)
Blinking orange (1/sec.)
Attention (See “<$elemtext7)
On (green)
Blinking red (2/sec.)
Fault (See “<$elemtext7)
Activity LED
State
Off
Off or no current disk/drive activity
Blinking (green)
Disk/drive is being accessed