
134
Operating Manual
BX400
S1
Hot-plug components
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8.4.1
Replacing the power supply unit
If a power supply unit fails, an error message is output on the LocalView display.
The defective power supply unit can be replaced during operation.
V
CAUTION!
CAUTION! The power supply unit can be
very hot
!
Ê
Check the power supply unit LEDs on the back of the system unit (see
figure 16 on page 68
) to find out which unit is defective.
Ê
First
unplug the power cable of the defective power supply unit from the
mains.
Ê
Unplug the power cable from the insulated socket of the defective power
supply unit.
Figure 46: Open release lever
Ê
Unlock the locking lever (1) and open the release lever (2).
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