5-15
SpycerBox Ultra/Flex | Hardware Guide | Version 3.1
Rohde & Schwarz DVS GmbH
Maintenance
Power Supply Maintenance
5.5 Power Supply Maintenance
The redundant power supply provides the system with power. It is a re-
liable and enduring part of the system because it consists of several in-
dependent power supply units: Even if one fails the others will still offer
enough power to keep the system working.
When a power supply unit failure occurs, you will be notified by a lit
alarm LED and the sounding of an alarm buzzer of the system. The
alarm can be switched mute with the mute button at the front of the
system (see section “Operation Items” on page 2-9).
Each power supply unit in the R&S DVS system is hot-swappable, so
you can safely replace it with the system running. Follow these steps to
replace a power supply unit:
1.
Take a look at the power supply at the rear of the system and
examine the LEDs of the units. The LED of the malfunctioning
power supply unit should be extinguished.
2.
Next unplug the power cord from this power supply unit.
3.
Unscrew the security screw of the latch.
4.
Take the handle of the respective unit and press the unit’s latch to
the left to unlock it.
5.
Then pull the unit at its handle out of the power supply.
System down in case of second power supply failure
The system can be operated with one power supply unit out of or-
der. However, if another one fails, a continued operation of the sys-
tem cannot be guaranteed.
It is recommended to change a failed power supply unit im-
mediately.
An alarm can be caused by a number of reasons. Please refer to section
“Troubleshooting” on page A-2 first for further details about what to do
in case of an alarm.
For an overview of a power supply unit see section “Power Supply” on
page 2-15.
Safety danger
The system you are working on operates with voltages that
can be hazardous to your health.
Do not reach inside the system when removing a
power supply unit or when the unit is out of the sys-
tem.
