Self-Test Failure LED

The Self-TestFailure LED is yellow and will indicate card test failures whenusedby fhe host system. Card self-testcode contained in PROM on the card is uploaded to the host and run under host control.

Note

The useof the card’s self-test code is systemdependent. In some

 

systems,for example, the self-test must be invoked by the operator. In

 

other systems,it may be run automatically by the system,but only if a

 

boot failure occurs.

 

In addition, the useof the Self-Test Failure LED is systemdependent. In

 

somecases,the LED will operate asdescribed here. In other cases,

 

systemmessageswill be displayed on the systemconsolein place of LED

 

operation. Refer to your systemreference manuals.

When card self-test is executed, the LED will tight and subsequentlyturn off if self-test passes. When usedby the system,the card self-testhas failed if:

n the LED never turns on, or

nthe LED turns on and remains on.

If card self-test fails, check the TERMPWR fuse. Otherwise, replace the card.

TERMPWR LED

The termination power (TERMPWR) LED is green and indicates that the card is supplying termination power to the SCSI bus. During proper operation, this LED should be on.

If this LED is off, there maybe a problem with the TERMPWR circuitry. Possiblefaults include a blown TERMPWR fuse, a faulty card, or a faulty cable connection. Instructions on how to replace the TERMPWR fuse is described later in this chapter.

2-6 Service Information