Installation guide

1–Installation
Component LEDs
D000102-000 B 1-49
• Green and Amber on indicates a possible problem, including:
• The fan tray is not responding to commands for configuration and
temperature-related operations.
• A fan is not responding to commands for temperature and speed related
operations.
• The fan speed has fallen below the minimum allowed RPM for a fan.
Power Supply LEDs
Figure 1-43 12800 Power Supply LEDs
Each power supply has three LEDs: DC OK, AC OK and Alarm. Following are the
status definitions for each.
DC OK
• Green indicates that DC power is normal.
• Off indicates a DC power failure or no DC power is present.
AC OK
• Green indicates that AC power is normal.
• Off indicates a AC power failure or no AC power is present.
Alarm
• Amber indicates a fault condition, failed fan, over temperature condition.