IBM EXN1000, Руководство по аппаратуре и обслуживанию, Страница: 50 / 94

Location of LEDs
The following illustration shows the location of the disk shelf ID display and
the front panel LEDs.
Note: The Fault and System LEDs are amber. The other three LEDs are green.
See Figure 6 on page 21 for an illustrated explanation of how the LEDs
function.
Monitoring the disk shelf ID
When you use the switch on the back of the EXN1000 expansion unit to
change the disk shelf ID, the disk shelf ID display on the front panel blinks
until you power-cycle the EXN1000 expansion unit to make the change take
effect.
LED status on the front operation panel
The following illustration is of the first sheet of the quick reference cards that
come with your EXN1000 expansion unit. It shows the normal and fault
conditions that the LEDs indicate and recommends a corrective action.
Power
Fault
Loop A
Loop B
System
Disk shelf ID display
Figure 5. Front panel LEDs
20