NEC Express 5800/120Lg, Service Manual, Page: 159 / 204

Problem Solving 5-27
Power Supply Lamps
The power supply on the rear of the server has three lamps. See Figure 5-5.
Figure 5-5. Power Supply Lamp Locations
NOTE:
The server equipped with an optional power unit can continue the operation with
the normal power unit if the other power unit is defected (redundant function). The
defected power unit can be replaced with a new one in the hot-swap mode without power
interruption.
DC Power Lamp
If the power cord is connected to the AC inlet to supply AC power to the power unit,
the lamp blinks green. When the power of the server is turned on, the lamp goes on
green. If the lamp is not lit after turning on the power of the server, the power unit may
be defected. Contact you service representative to replace the power unit.
Power Status Lamp
If a power supply failure (such as a fan performance problem, current limit, and
overload voltage) is detected, this lamp goes on amber. Contact you service
representative to replace the power unit.
AC Power Lamp
If the power cord is connected to the AC inlet to supply AC power to the power unit,
the lamp goes on green. If the lamp is not lit after supplying AC power, the power
supply bay may be defected. Contact you service representative to replace the power
supply bay.
DC power lamp
Power status lamp
AC power lamp