Conversions: DLP-510 363-205-401
Page 2 of 4 Issue 7, March 1997
3. Perform the following items to clear trouble:
• At COT, replace
TAU
/
TRU
(check circuit pack version and option set-
tings).
• At RT, check
ADU
options and replace
ADU
if options are correct.
• At RT, replace
AUA105 TRU
.
• At RT, check
AUA6( )D LIU
options and replace
LIU
if options are correct.
See DLP-507
4. After performing the above Step, did
LIU A
CLF
and
BCU A
and B indicators
go off?
If
NO
, then continue with Step
5
.
If
YES
, then proceed to Step
7
.
5. 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) to clear trouble before continuing.
6. Request COT personnel to install
TAU
/
TRU
(in shelf group CD TRU slot) cir-
cuit packs in
LIU
slot
D
.
Response: Digroups
C
and
D
alarms clear on
BCU
.
Minor alarm indicator may be on if the system is integrated
and the protection line has not been restored.
7. After COT installs
TAU
/
TRU
, did alarms clear?
If
NO
, then continue with Step
8
.
If
YES
, then proceed to Step
11
.
8. Perform the following items to clear trouble:
• At COT, replace
TAU
/
TRU
(check circuit pack version and option set-
tings).
• At RT, check
ADU
options and replace
ADU
if options are correct.
• At RT, replace
AUA105 TRU
.
• At RT, check
AUA6( )D LIU
options and replace
LIU
if options are correct.
See DLP-507
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