Kw Dual Ac-Dc Power Supply Leds - Sun Microsystems Sun Fire E25K Service Manual

3.2.1 4 kW Dual AC–DC Power Supply LEDs
4 kW Dual
TABLE 3-2
TABLE 3-1
Total Number of Power Supplies
TABLE 3-2
LEDs after Insertion
or Initial System Power On
Active Service Remove Active Service Remove Active Service Remove Active Service Remove
on
1 ON = AC0_FAIL_L = H or AC1_FAIL_L = H
2 OFF = AC0_FAIL_L = L and AC1_FAIL_L = L
Failure of the active LED to transition from ON to OFF within 60 seconds after
insertion indicates a power-status control fault.
FIGURE 3-4
AC–DC power supply components and LEDs are listed in
.
AC–DC Power Supply Components
4 kW Dual
Per System
6
4 kW Dual AC–DC Power Supply Valid LED Status
LEDs After PRESENCE
is Detected
off off off off
illustrates the power supply and the LED locations.
Total Number of LEDs Per
Power Supply
3
Component Powered On
on on off
TABLE 3-1
1
Component Powered Off
off off off
Chapter 3 System Power
and
2
on
3-9