363-205-401
Conversions: DLP-510
Issue 7, March 1997
Page 3 of 4
9.
After performing the above Step, did alarms clear?
If NO, then continue with Step 10.
If YES, then proceed to Step 11.
10. Replace MC97771A1 or MC97776A1 BCU. If trouble does not clear, check
wiring using SD-7C117-01 or SD-7C117-02 (SD-7C118-01 or SD-7C150-01
for FTTH).
11.
!
CAUTION:
If you have a FTTH system, STOP. YOU HAVE COMPLETED THIS
PROCEDURE. Performing this test will result in permanent damage to
AYB1B units in the optical shelf.
Obtain one special service channel unit AUA41, AUA42, AUA43, AUA44,
AUA54, or AUA52 and install in any channel unit slot except the last four slots
for digroup A.
Response:
The SPL indicator on the AUA105 TRU lights.
12. Did SPL indicator light on the AUA105 TRU?
If YES, continue with Step 13.
If NO, proceed to Step 14.
13. Remove channel unit and repeat Step 11 for each new digroup (B, C, and D).
STOP. YOU HAVE COMPLETED THIS PROCEDURE.
14. Replace, one at a time, the AUA105 TRU, AUB27 ADU, MC97771A1 or
MC97776A1 BCU with correct option setting and repeat SPL indicator test
after each replacement. If the SPL indicator does not light after these units
have been replaced, check wiring using SD-7C117-01 or SD-7C117-02
(SD-7C118-01 or SD-7C150-01 for FTTH).
