Tools
Issue 2.0 June 2004
177
Diagnosing LED patterns
Many hardware components of the computer have LEDs that can be used to diagnose
problems. This section describes the following patterns:
●
Front panel LEDs
on page 177
●
PCI slot LEDs
on page 179
●
Power supply LEDs
on page 181
●
Disk drive LEDs
on page 182
●
Tape drive LEDs
on page 184
Front panel LEDs
The system status and control panel, shown in the following figure, includes several LED
status indicators, a power button, and a security key switch.