Power Supply Types; Table 7-1 Power Supply Summary - Sun Microsystems Enterprise 3500 System Reference Manual

7.1

Power Supply Types

There are three types of power supplies:
Peripheral power supply/AC input (PPS/AC [PPS 0])
Optional auxiliary peripheral power supply (PPS [PPS 1])
Power/cooling module (PCM)
Caution – A thermal protection module or an auxiliary peripheral power supply
(PPS1) must be installed in the front PPS1 slot at all times to ensure the maximum
operating temperature is not exceeded.
Both the auxiliary peripheral power supply (PPS 1) and the PCM are hot-pluggable.
This feature enables you to physically remove the failed component despite its being
"live," or being supplied with electrical power. In addition, both may be inserted
into a running system.
The PPS/AC (PPS 0) is not hot-pluggable because it incorporates an AC cord and
circuit breaker for system input power.
Note – A functioning PPS/AC (PPS 0) provides electrical precharge that is required
for the hot plug of PCMs. The hot-plug replacement of the PPS (PPS 1) does not
require electrical precharge. Use the
electrical precharge is available.
TABLE 7-1
generate them.
TABLE 7-1
Voltage
2.0V
3.3V
5V
5V
12V
7-2 Sun Enterprise 3500 System Reference Manual • August 2001
lists the power supply voltages, their uses, and the power supplies that
Power Supply Summary
Supply Use
PCM Centerplane termination
PCM CPU/Memory+ board, I/O+ board, Clock+ board
UltraSPARC II module (SRAMs, SDBs, CPU I/O)
PCM SBus Card, Clock+ board
UltraSPARC II module power (via DC/DC converter)
PPS/AC, PPS Peripherals (DVD drive, tape drive)
PPS/AC, PPS Peripherals (DVD drive, tape drive)
command to determine if
prtdiag (1M)