2
2
Power-On Self-Test
(POST) Sequence
When you turn on operating power to the 10/20-GB DLT
tape drive (i.e., turn on pedestal power if the DLT tape
drive is mounted in a StorageWorks enclosure, or
depress top (“1”) portion of 1/0 rocker switch on rear
panel if the DLT tape drive is a tabletop unit), the
following results should occur, in sequence:
NOTE 1
If the W
RITE
-P
ROTECTED
indicator flashes
orange and the T
APE IN
U
SE
indicator
flashes yellow continuously for more than
30 seconds in the following test, then the
POST test has failed. Repeat the test to
clear the failure (power off and then on); if
the test still fails, replace the drive.
NOTE 2
The indicator sequence described in the
following procedure describes what
happens when the 10/20-GB DLT unit is
connected to an active SCSI bus. If the
SCSI bus is not connected, all left-side
panel indicators remain on at all times while
power is applied to the unit.
1. All left-side panel indicators will initially light, with
all right-side indicators then lighting sequentially,
from top to bottom.
2. If the SCSI bus is not connected, all left-side panel
indicators will stay lit. If the SCSI bus is connected,
all left-side panel indicators should go out within 1
second after power is applied, while all right-side
panel indicators should remain lit for 3 to 5 seconds
and then go out except for the T
APE IN
U
SE
indicator.
3. The
T
APE IN
U
SE
indicator should continue to blink
for a few seconds, while the tape mechanism
searches for tape, and then go to one of the
following two states:
