Lucent Technologies DEFINITY Enterprise Communications Server Release 6 Instructions Manual

Responding to Alarms and Errors
Page 5-1 Safety Precautions 
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DEFINITY Enterprise Communications Server Release 6
Maintenance for R6r Volumes 1 & 2  555-230-126  Issue 2
January 1998
5
5Responding to Alarms and Errors
Safety Precautions
By observing the prescribed safety precautions when working on the system, 
you can avoid unnecessary disruption of service and damage to the equipment. 
The items on this list should be a regular part of your routine.
!WARNING:
Failure to comply with these procedures...

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6r Volumes 1 & 2  555-230-126  Issue 2
January 1998
Responding to Alarms and Errors 
Page 5-2 DEFINITY AUDIX System Power Procedures 
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nBefore powering down a cabinet or carrier that contains DEFINITY AUDIX 
circuit packs (TN566), first power down the AUDIX unit to avoid damaging 
the AUDIX software. Instructions for powering down this unit are in the 
‘‘
DEFINITY AUDIX System Power Procedures’’ below, on the circuit pack, 
and in...

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6r Volumes 1 & 2  555-230-126  Issue 2
January 1998
Responding to Alarms and Errors 
Page 5-3 Electrostatic Discharge 
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NOTE:
When powering up, the DEFINITY ADUXI System automatically 
reboots. This sequence may show an MD or MJ ADX alarm in the 
display until the system how powered up. When the system has 
completed its power up sequence, the display reads: ADX.
Electrostatic Discharge
Whenever a circuit pack is inserted or removed,...

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6r Volumes 1 & 2  555-230-126  Issue 2
January 1998
Responding to Alarms and Errors 
Page 5-4 Suppress Alarm Origination [y] 
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Figure 5-1. Multi-Carrier Cabinet ESD Grounding Wrist Strap Jack
Suppress Alarm Origination [y]
When logged in as “craft,” no alarms are reported to INADS. After logging off, 
INADS automatically reactivates, and any unresolved alarms are reported to 
INADS. 
Also, when logged in as “craft,” an automatic logoff...

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6r Volumes 1 & 2  555-230-126  Issue 2
January 1998
Responding to Alarms and Errors 
Page 5-5 Reseating and Replacing Circuit Packs 
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Reseating and Replacing Circuit Packs
Most repair procedures involve replacing faulted circuit packs. In some cases, 
problems are resolved by reseating the existing circuit pack. Reseat a circuit 
pack 
only when explicitly instructed to do so by the documented procedures. 
Reseating is discouraged...

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6r Volumes 1 & 2  555-230-126  Issue 2
January 1998
Responding to Alarms and Errors 
Page 5-6 Replacing a BIU or Rectifier 
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Special Procedures
The following circuit packs require special procedures.
For components of the SPE, see “Replacing SPE Circuit Packs”.
nUN331B Processor (SPE)
nTN1650B Memory (SPE)
nTN1655 Packet Interface (SPE)
nTN1648 SYSAM (SPE)
nUN332 MSSNET (SPE)
nTN1657 Disk (SPE)
nTN1656 Tape (SPE)
nTN768/780 Tone/Clock...

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6r Volumes 1 & 2  555-230-126  Issue 2
January 1998
Responding to Alarms and Errors 
Page 5-7 Replacing SPE Circuit Packs 
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Replacing SPE Circuit Packs 
All circuit packs on the processor carrier of the PPN except for the Tone/Clock 
board are components of the SPE. In addition to the customary MO 
documentation, there are additional diagnostic techniques for these boards 
described in the following section, 
Troubleshooting a...

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6r Volumes 1 & 2  555-230-126  Issue 2
January 1998
Responding to Alarms and Errors 
Page 5-8 Replacing SPE Circuit Packs 
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Replacing Circuit Packs on a Duplicated SPE: 
Lock-and-Power-Down
By following the lock-and-power-down procedure, components of a duplicated 
SPE can usually be replaced with no disruption of service.
!WARNING:
In a system with duplicated SPEs, a spontaneous SPE interchange may 
occur if the active SPE is not in...

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6r Volumes 1 & 2  555-230-126  Issue 2
January 1998
Responding to Alarms and Errors 
Page 5-9 Replacing SPE Circuit Packs 
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5. Power down the standby processor carrier by:
a. Remove the power plug from the left side of the carrier first.
b. Remove the second power plug from the right side of the carrier.
6. Remove the failed circuit pack and replace it with a new one of the same 
type.
7. Power up the standby processor carrier by:
a....

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6r Volumes 1 & 2  555-230-126  Issue 2
January 1998
Responding to Alarms and Errors 
Page 5-10 Troubleshooting a Duplicated SPE 
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Troubleshooting a Duplicated SPE
The section on maintenance object ‘‘STBY-SPE (Standby SPE Maintenance)’’ 
contains procedures for troubleshooting specific problems such as handshake 
failure, memory shadowing failure, and poor state of health. The following 
procedures describe a method for determining the...