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.