Technical data

Figure 1–22: Power Supply Indicators

Power Switch

DC OK Indicator

Over Temperature

Condition Indicator

Fan Failure

Indicator

Power Bus

Connectors

Power Cable

Connector

AC Present Indicator

MLO-004040

The combined maximum current at +12.1 Vdc, -12.1 Vdc, +3.4 Vdc, and +5

Vdc must not consume more than 600 watts of power. See the conﬁguration

worksheet for details. Figure 1–22 for BA440 enclosure and Figure 1–22

for BA430 enclosure.

Each mass storage device receives power through an 80-pin connector on

the backplane located in back of each drive unit.

Also, the H7874 power supply has an ac switch and three power controller

I/O connectors for chained operation when used in a multienclosure

conﬁguration (Figure 3–22).

1–20 BA430/BA440 Enclosure Maintenance