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

Environmental Monitoring Unit

UltraSCSI RAID Enclosure 3–5

EMU Front Panel

The EMU user interface controls, connectors, and LED displays are

on the front panel (see Figure 3–3). The following sections describe

the function of each component.

Figure 3–3 EMU Major Component Locations

EMU Communications Connectors

These connectors (C

ALLOUTS 1 and 7) provide for EMU–EMU

communications between the master EMU and expansion EMUs.

System Fault LED and Alarm Control Switch

The amber system fault LED is part of the alarm control switch

ALLOUT 2). This LED turns ON if an error condition is detected.

The system fault LED starts F

LASHING if the EMU has one or more

fault codes to display.

If the system fault LED is F

LASHING, momentarily pressing the EMU

alarm control switch turns the audible alarm OFF and initiates a fault

code LED display.

Pressing the alarm control switch for at least 5 seconds clears all

stored active fault codes. New fault detection and display continues.

If the enclosure is in standby power mode, momentarily pressing the

alarm control switch restores dc power to the enclosure.

Figure C

ALLOUTS

1. EMU communications connector

(labeled IIC)

2. System fault LED (amber) and alarm

control switch

3. Temperature fault LED (amber)

4. Power status LED (green)

5. Maintenance terminal connector

6. Blower fault LEDs (amber)

7. EMU communications connector

(labeled IIC)

CXO5774A