Installation guide

System Self-Test 8-3

Processor and memory modules have a green LED that lights when the

module passes or completes self-test. These LEDs can be viewed through

holes in the shield of the module enclosure from the front and rear of the

cabinet when the doors are open (see Figure 8-1). I/O modules have a yel-

low LED that lights when the module passes self-test. The I/O module

LEDs can also be seen through holes in the PIU enclosure shield. The

DWLMA has a yellow self-test LED and four others which after successful

start-up are lit as shown in Table 8-1.

Table 8-1 LEDs After Self-Test

Module Self-Test Passed Self-Test Failed

Processor

Green ON Green OFF

Memory

Green ON Green OFF or ON

I/O

Yellow ON Yellow OFF

DWLMA

Yellow ON

Green ON

Red OFF

Yellow OFF

The green LED on the memory module indicates that self-test completed, not passed.

For more information:

Basic Troubleshooting