HP 28642A manual Self-Test Failure LED, Boot failure occurs

Self-Test Failure LED

The Self-Test Failure 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 as described 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-test has 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 may be 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