Service manual

System Overview 1-35
The power control module performs these functions:
• Controls power sequencing.
• Monitors the combined output of power supplies and shuts down power if it is
not in range.
• Monitors system temperature and shuts off power if it is out of range.
• Monitors the fans in the system drawer and on the CPU modules and shuts down
power if a fan fails.
• Provides visual indication of faults through LEDs.