5 Oct
2004
5 Oct
'04
10:20 a.m.
On Sun, 3 Oct 2004, Zane H. Healy wrote:
Unfortunately, that's not the problem. The leader is in place and, as I
mentioned in my first post, it does properly load the tape and wind
forward for a bit. On a working drive, it begins to shoe-shine back and
forth until it calibrates itself. The bad drives just sit there blinking
until I hit the unload button.
Do these things use holes in the tape to locate BOM, or is it magnetically
sensed?
Steve
On that
subject, can anyone shed light on what appears to be a common
failure mode for DLT7000 drives? I have (2) which misbehave in the same
manner. At powerup, the head recalibrates (bzzzzzttt), the door lock
solenoid activates and the green LED on the bottom right lights. However,
all the density and tape type LEDS on the left simply flash in
sync approx. 2x per second. An inserted tape will load, but that's all
she wrote. No track calibration, no shoeshine - nothing. Exact same
symptoms on both units.
One was working until the power was accidently interrupted in the midst of
a backup. The second was a $5.00 swap-meet item picked up in the hope of
yielding parts to get the first working <g>.
I don't happen to have the manual handy, but have the drives swallowed the
tape leader? It's a bit of a pain in the neck to restring the leader on a
DLT7000 compared to a TK50, but it's still not that hard. When you look in
the drive, you should see something that looks like the bottom end of the
following:
http://zane.brouhaha.com/~healyzh/TK50-Leader.gif
