DELL 6350 Manuale Utente

Pagina di 96
System Overview
1-11
6\VWHP3RZHU6XSSOLHV
The three redundant power supplies are installed vertically in a row at the front 
of the chassis. They can be installed and lifted out of the unit using a handle 
that rotates upward. (To release the handle, press on it until it pops up; to 
secure it, press it down until it clicks into place.) When fully installed, a power 
supply automatically mates with a connector on the PSPB, which lies under 
the power supplies. The PSPB controls the power supplies and supplies them 
with AC power via the AC routing cable.
Two indicators on the top of each power supply (see Figure 1-9) signal the
status of the power supply. Both indicators light briefly during initial system 
start-up; the green status indicator stays on to show that the power supply is 
operating normally. The red fault indicator turns off after initial system start-up 
is complete. If it lights any time after system start-up, a fault is indicated in the 
power supply and the power supply should be replaced. 
)LJXUH  3RZHU 6XSSO\ ,QGLFDWRUV
The power supplies can operate from an AC power source of 90 to 265 VAC at 
47 to 63 Hz. They provide the DC operating voltages and currents listed in 
Table 1-2.
NOTE: The power supplies produce DC voltages only under their loaded
condition. Therefore, when you measure these voltages, the power supplies 
must be mated to the PSPB, and the DC power cable harnesses must be
connected to the PSPB and to their corresponding system loads (the system 
board, SCSI backplane board, and so forth). 
power supplies (3)
green status indicator 
(lights when power supply 
is functioning normally)
red fault indicator (lights 
when a fault is indicated)