Technical data

Figure 3–22: Power Supply Indicators, Connectors, and Switch Loca-
tions
Power Switch
DC OK Indicator
Over Temperature
Condition Indicator
Fan Failure
Indicator
Power Bus
Connectors
Power Cable
Connector
AC Present Indicator
MLO-004218
Hazardous
Warning Label
1. Turn off the H7874 power supply switch and unplug the ac power cord
from the wall outlet.
2. Remove the power cord from the power supply (Figure 3–23).
3. Remove the ground strap (if any) and power control bus cables (if any).
4. Release the top power supply captive screw.
5. Release the bottom captive screw by raising the metal plate up against
the bottom of the power supply and hold for 45 seconds. The bottom
screw is exposed when the plate is held up in the bleed position
(Figure 3–24). Release the bottom screw.
6. Grasp the handle with one hand and pull the supply out from the
backplane connection (Figure 3–25).
BA430/BA440 FRU Removal and Replacement 3–33