363-206-285 Trouble Clearing: TAP-111
Issue 2, February 2000 Page 2 of 6
DDM-2000 OC-3 MULTIPLEXER
NOTE:
This procedure can be used to clear some troubles, but a knowledge of
the OLIU protection switching arrangement and use of CIT commands
are necessary to clear other troubles where a service interruption might
occur.
Was OLIU(s) removed or being replaced, installed, or having switch setting
changed when alarm occurred?
If YES, then continue with Step 2.
If NO, then proceed to Step 11.
2.
NOTE:
An alarm will occur if a circuit pack is removed without performing an
update by momentarily depressing the UPD/INIT button or using the upd
command.
Is any previously installed OLIU(s) removed from the shelf?
If YES, then continue with Step 3.
If NO, then proceed to Step 5.
3. Determine the reason the circuit pack(s) was removed. If the same circuit pack
is to be reinserted and switch setting is not changed, reinstall the circuit pack.
If the circuit pack was removed and switch setting changed, reinstall the circuit
pack (DLP-514) and momentarily depress the UPD/INIT buttononthe
SYSCTL. If the circuit pack is not to be reinserted, momentarily depress the
UPD/INIT button on the SYSCTL to remove the circuit pack from equipment
inventory.
4. STOP. YOU HAVE COMPLETED THIS PROCEDURE.
5. Is OLIU(s) installed in correct slot(s) (rtrv-eqpt:)?
If NO, then continue with Step 6.
If YES, then proceed to Step 8.
6. Remove optical fibers from circuit packs, if connected, then remove circuit
pack(s) from wrong slot(s). Check option switch setting (DLP-513), and install
circuit pack(s) into correct slot(s). Reconnect optical fibers (DLP-514).
7. STOP. YOU HAVE COMPLETED THIS PROCEDURE.
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