363-206-305 Trouble Clearing:
Issue 3, June 2000 Page 1 of 2
DDM-2000 F
IBER
R
EACH
N
ARROWBAND
S
HELF
TAP-102
Clear DSXBIU Failure Alarm
Summary:
This procedure tells how to clear an DSXBIU failure alarm. As a stimulus to perform
this procedure, you have retrieved an DT failure alarm message from the CIT port in
the
SLC
-2000 host and observed a FAIL LED indication on the DSXBIU at the NBS
site. You could also have been directed to go to the NBS site by the surveillance
center. If both the FAIL and NE lamps are on, we have facility problems. If the FAIL
lamp only is on, we have a bad board.
1. Open the electronics compartment door using the 216-type tool or screwdriver.
2. Connect your ESD wrist strap to the ESD GRD jack located at the lower left
front of the electronics compartment.
3. Verify that the FAIL LED on the DSXBIU is lit.
4. Remove the failed DSXBIU.
5. Obtain DSXBIU to be installed and inspect the unit for damage.
6. Install the replacement DSXBIU.
Within one minute, the FAIL LED begins to quickly flash (two times/second) to
indicate that the software is being downloaded. The LED should flash for
approximately four hours.
7. Is the FAIL LED extinguished?
If YES, proceed to Step 9.
If NO, continue with Step 8.
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