DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126 Issue 4
June 1999
Alarms, Errors, and Troubleshooting
5-7Replacing SPE Circuit Packs
5
Replacing SPE Circuit Packs
All circuit pack s on the processor carrier of the PPN excep t for the Tone/Clock
boar d are comp onen ts of t he SPE. I n add itio n to t he cu stoma ry MO
documentation, there are add itional diagnostic tec hniques for these board s
described in the following section, ‘‘Troubleshooting a Duplicated SPE’’.
Instructions for replacing the Tone/Clock circuit pack c an be found in the
TDM-CLK MO documentation.
!WARNING:
DO NOT “HOT PLUG” AN SPE BOARD. Before removing any SPE circuit
pack you must power d own the carrier in which it resid es, (except in the
case of a t ape o r dis k dr ive in a sim plex SPE). Powe ring dow n the
processor carrier is d estructive on a simplex system, c ausing a total service
outage. Be sure you have consulted the appropriate d ocumentation for the
component you are replac ing. Be sure you are familiar with the prec autions
at the beginning of this c hapter.
Simplex SPE
This procedure is destruc tive, resulting in a total service outag e except for lines
administered with Emergency Transfer. The processor
must
be powered down t o
avoid hardware damage . Arrange to perform this p rocedure when a service
outage will have the least impac t on the customer.
1. Attach the grounding strap to your wrist.
2. Remove power to the processor ca rrier, (carrier A), by unplug ging the
power cords located on the front of the power units located at
both
ends of
the carrier.
3. Remove or reseat the circuit pack using the procedure d escribed
previously in ‘‘Reseating and Replacing Circuit Pa cks’’.
4. Restore power to the carrier by plugging both power cords back in.
5. Monitor the system reboot by ob serving the LEDs and G3-MT output.
These indicators are described in Chapter 4, ‘‘Initialization and Recovery’’.
6. Test the replaced component(s) using the appropriate MO d ocumentation.
7. If the same problem persists, reinstall the original circuit p ack to avoid
confusing further troublesh ooting.