TONE-BD (Tone-Clock Circuit Pack)
Issue 4 May 2002
10-1797
555-233-123
3. If the t/c selector has not undergone an interchange since the error
occurred, go to the next step. If such an interchange has taken
place, interchange back to the formerly active t/c selector. Use the
set expansion-interface command when investigating an EPN
Tone-Clock.) If the interchange attempt fails due to other errors,
resolve those problems first.
4. Interchange the Tone-Clock circuit packs using the set tone-clock
PC command. If the command succeeds, the interchange which
previously failed has been accomplished and the problem has been
satisfactorily resolved. If it fails, proceed to the next step. (You may
want to proceed in any case to definitively test all relevant
components.)
5. Interchange the t/c selector using set expansion-interface if
investigating an EPN. If errors prevent this interchange, resolve
them first.
6. Attempt again to interchange Tone-Clocks with the set tone-clock
PC command.
— If the Tone-Clock interchange failed for both t/c selectors:
Replace the standby Tone-Clock circuit pack which could not
be interchanged into and return to this step. (See
Replace a Tone-Clock Circuit Pack’’
.) Test the new circuit
pack as follows:
a. Execute the set tone-clock PC command.
b. Execute a set expansion-interface, if this is an EPN
Tone-Clock.
c. Execute the set tone-clock PC command again.
If these commands successfully complete, the problem has
been resolved.
— If these commands successfully complete, the problem has
been resolved.
— If the Tone-Clock circuit packs successfully interchange when
one EXP-INTF is active, but not when the other one is:
The t/c-selector circuit pack on the failing side is suspect.
a. Replace the A carrier DUPINT or EXP-INTF board that is
active when the Tone-Clock interchange fails. (Follow
procedures in
‘‘Replacing Defective SPE Circuit Packs’’
Chapter 6, ‘‘Reliability Systems: A Maintenance Aid’’
for the
DUPINT circuit pack; for the Expansion Interface, see
EXP-INTF.)
b. Make sure the new t/c selector is active and execute the set
tone-clock PC command.
Summary of Contents for Definity SI
Page 1: ...0DLQWHQDQFH IRU YD D 1 7 6HUYHU 6 Volumes 1 2 and 3 555 233 123 Issue 4 May 2002...
Page 62: ...Maintenance Architecture 555 233 123 1 26 Issue 4 May 2002...
Page 92: ...Management Terminals 555 233 123 3 26 Issue 4 May 2002...
Page 204: ...Routine Maintenance Procedures 555 233 123 5 100 Issue 4 May 2002...
Page 250: ...LED Interpretation 555 233 123 7 10 Issue 4 May 2002...
Page 2804: ...Maintenance Object Repair Procedures 555 233 123 10 2018 Issue 4 May 2002...