Function 04: Lamp test

This function shows whether any of the control panel indicators are not working correctly, and whether characters that are displayed in the Function/Data display on the control panel are valid.

This function is available in both normal and manual operating mode.

When a lamp test is initiated, the firmware-controlled indicators in the central electronics complex (CEC) and the expansion units are turned on solid for 4 minutes, and then restored to their previous states.

Use the following procedure to verify that the lights on the system control panel are working correctly.

Power on the system.
Press the Increment (↑) or Decrement (↓) buttons on the control panel to display function 04.
Press Enter on the control panel.
Do all of the lights and indicators on the system control panel come on?
Yes No

↓ Exchange the FRU with the faulty LED indicator. For example, replace the fan if the LED on a fan does not turn on.
Do the expansion unit control panel lights all come on?
Note: The expansion unit control panel lights will be lit for only about 25 seconds after function 04 is entered.

Yes No

The lights on the system control panel are working correctly. Exchange the control panel on the expansion unit.