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Self-Test Failure LED
The Self-Test Failure LED is yellow and will indicate card test failures when used by fhe
host system. Card self-test code contained in PROM on the card is uploaded to the host
and run under host control.
Note
The use of the card’s self-test code is system dependent. 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 use of the Self-Test Failure LED is system dependent. In
some cases, the LED will operate as described here. In other cases,
system messages will be displayed on the system console in place of LED
operation. Refer to your system reference manuals.
When card self-test is executed, the LED will tight and subsequently turn off if self-test
passes. When used by the system, the card self-test has failed if:
n the LED never turns on, or
n
the 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. Possible faults
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