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Both the PPS/AC (PPS 0) and auxiliary PPS (PPS 1) incorporate current sharing to
operate in redundant and parallel operations. The peripheral power supply/AC
input provides three precharge outputs (3.3V, 5V, and 12V) to enable hot-plug
installation of system boards or PCMs into an active centerplane.
Quarter-turn
access slot
Extraction lever
FIGURE 7-1
Peripheral Power Supply/AC Input
Captive screw
Extraction lever
FIGURE 7-2
7.4.1
Auxiliary Peripheral Power Supply (PPS1) and Thermal Protection Module
Peripheral Power Supply LEDs
A green LED is lit on the power supply when it is operational. When a peripheral
power supply fails, a yellow LED is lit on the power supply.
7-4
Sun Enterprise 3500 System Reference Manual • August 2001