Lucent Technologies SLC 5 Series - Page 314

363-205-401 RT Turn Up:
Issue 7, March 1997 Page 1 of 4
DLP-510
Install Transmit/Receive Unit (TRU) in AB Shelf
1. Get one compatible version
TRU
and inspect for possible damage.
Reference: DLP-500
2. Insert
TRU
into
TRU
slot located in AB (lower) shelf of channel bank while
observing indicators on
TRU
faceplate.
Response:
TRU FAIL
indicator lights momentarily,
ADU MJ
and
NE
indicators are lighted, and
DIGROUP A, B
indicators on
BCU
are lighted.
DIGROUP C, D
indicators on
BCU
will also
be lighted if CD digroups are in preservice/equipped state.
AUA105 SPL
indicator will light momentarily for Mode 2
applications.
3. Did
FAIL
indicator on
TRU
light momentarily?
If
YES,
then proceed to Step
8.
If
NO,
then continue with Step
4.
4. Replace
TRU
.
5. Did
FAIL
indicator on
TRU
light momentarily?
If
YES,
then proceed to Step
8.
If
NO,
then continue with Step
6.
6. Replace
TRU
with
TRU
removed previously.
7. Check wiring between
PCU
and
TRU
using SD-7C117-01 or SD-7C117-02.
Repeat procedure from Step
2
after locating and correcting trouble.
8. Did
FAIL
indicator on
TRU
go off and remain off?
If
YES,
then proceed to Step
20.
If
NO,
then continue with Step
9.
9. Replace
TRU
in AB shelf.