Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA370 Series) User's Guide (EK-BA370-UG. C02, September 1998)

Power Distribution

6–10 UltraSCSI RAID Enclosure

• Failure of the ac power source for bus B and one power supply on

bus A

• Failure of the ac power source on bus A and one power supply on

bus B

• Failure of the ac input box on bus B and one power supply on

bus A

• Failure of the ac input box on bus A and one power supply on

bus B

Error Condition Reporting

This section describes the power supply and ac input box error

condition reporting.

Power Supply

The two green LEDs on each power supply (see Figure 6–7) display

the blower, the power bus, and the individual power supply status.

Normally, both of these LEDs are ON.

Figure 6–7 Power Supply Status LEDs

The green shelf status LED (C

ALLOUT 1) is ON when all the power

supplies and all the blowers are operational. If any blower or power

supply fails, this LED turns OFF.

Figure C

ALLOUTS

1. Shelf status LED

2. Power supply status LED

CXO4787B