RA7000 and ESA10000 Storage Subsystems
1–14
EK–SMCPP–UG. A01
Table 1–2 EMU Front Panel Component Descriptions
Component
Function
EMU Com. Connector
(LEFT )
Provides inter-EMU communications to another
EMU.
System Fault LED
(amber) and Alarm
Control Switch
The System Fault LED in the Alarm Control Switch is
ON whenever there is an error condition.
This LED is FLASHING whenever the EMU has one
or more fault codes to display.
When there is a fault code, momentarily pressing this
switch turns OFF the audible alarm and starts the
fault code LED display.
Pressing the Alarm Control switch for at least 5
seconds clears all the active fault codes.
After a controlled power shut down, momentarily
pressing this switch will restore power to the
enclosure.
Temperature Fault LED
(amber)
Whenever either the ambient temperature or the
enclosure backplane temperature exceeds the user-
defined temperature set point, this LED is ON until
the condition is corrected.
Power Status LED
(green)
This LED is ON whenever there are:
At least four opera5 V dc power supplies
At least four opera12 V dc power supplies
TERMPOWER is present on all six I/O modules
This LED is OFF whenever there are:
Fewer than four opera5 V dc power supplies
Fewer than four opera12 V dc power supplies
One or more I/O modules are missing
TERMPOWER
EMU Maintenance
Connector
You can connect a maintenance terminal or PC to
this connector to display EMU:
Error messages
Information messages
A PC can also load EMU microcode through this
connector.
Blower Fault LEDs
(amber)
One or more of these eight blower fault LEDs are
ON whenever one or more blowers are:
Not operating
Not operating at the correct speed.
Removed
There is a fault code display
EMU Com. Connector
(RIGHT)
Provides inter-EMU communications to another
EMU.
