Lucent Technologies FiberReach DDM-2000 - Page 1395

363-206-305 Trouble Clearing:
Issue 3, June 2000 Page 1 of 4
DDM-2000 F
IBER
R
EACH
W
IDEBAND
S
HELF
TAP-103
Clear Multiple Failure
1.
!
CAUTION:
Although the FAULT LEDs may be lighted or flashing on an OLIU , service
may be interrupted if the OLIU is removed. The OLIUs may be in
unidirectional switching mode and transmitting on one OLIU while
receiving on the other. The state of the switch mode must be analyzed
before removing an OLIU .
NOTE:
A multiple failure condition exists when a service circuit pack and its
associated protection circuit pack have failed, when two service DS1
circuit packs in the same group have failed, or when the switch mode is
inhibited or locked and a failure occurs on a service circuit pack.
Is the FAULT LED on an OLIU lighted (CP failed) or flashing (inc. OC1
LOS, inc. OC3 LOS, or inc. OC12 LOS, etc.)?
If YES, do TAP-111.
If NO, continue with Step 2.
2. Are the FAULT LEDs on both a service and protection circuit pack of the same
type lighted (not flashing) (CP failed)?
If YES, continue with Step 3.
If NO, proceed to Step 7.
3. !
CAUTION:
Replacement circuit pack may have option switches which must be
properly set before the circuit pack is installed.
Replace the service circuit pack with the lighted FAULT LED.
Reference: DLP-523