Dc Power Supplies; Checking The Power Status Leds - NEC Express5800 series User Manual

DC Power Supplies

The power supply bay accommodates up to three power supply modules. The
bay contains a power distribution board (PDB) that manages the delivery of
power from the power supply modules.

Checking the Power Status LEDs

Figure 4-29 shows the three power supply status LEDs.
A
B
Table 4-2 lists the LED states and the power supply status indicated by each
state.
Table 4-2. LED Power Supply Status Indicators
Power
(Green)
Off
Off
Blinking
On
On
On
Note:
power cables from the power distribution board are properly
connected to the baseboard and other components, but the
server still won't power on, the power distribution board may
require replacement.
A
B
C
Power LED
Predictive Fail LED
Figure 4-29. Power and Standby LEDs
Predictive Fail Fail
(Amber) (Amber)
Off Off
Off On
Off Off
Off Off
Off Blinking
On or Blinking Off
If all power supply modules are functioning and all
C Fail LED
Status
No power to all power supplies
Power supply failure or no power to this power
supply
AC power present, standby outputs on
Power supply on, DC outputs normal
Current limit
Imminent failure predicted; fan performance
problem
Upgrading Your System 4-39