Lucent Technologies 4ESS User manual

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Expanded Time Slot Interchange (XTSI) Cabinet
Trouble Clearing Procedures
Lucent Technologies — Proprietary
This document contains proprietary information of
Lucent Technologies and is not to be disclosed or used
except in accordance with applicable agreements
Copyright© 1999 Lucent Technologies
Unpublished and Not for Publication
All Rights Reserved
Printed in U.S.A.
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TITLE PAGE
234-351-011AC TPG
000
Issue 2 JUN 1999

Trademarks
Ordering Information
Center, by using the following address or fax number.
Note:
Attention: Order Entry Department
2855 North Franklin Road
Indianapolis, Indiana 46219-1999
or
Process orders through your Technical Information Resourcec. Local Exchange Carriers (LEC):
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Every effort is made to ensure that the document information is complete and accurate at the time of printing. However, information is subject to change.
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Submit orders by calling 1-800-432-6600 or fax to 1-800-566-9568
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Copyright 1999 Lucent Technologies. All Rights Reserved.
4ESS is a trademark of Lucent Technologies.
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This material is protected by the copyright and trade secret laws of the United States and other countries. It may be reproduced, distributed, or altered in any fashion
Lucent Technologies — Proprietary
Use Pursuant to Company Instructions
Issue 2 LPG
000
JUN 1999
234-351-011AC
LEGAL PAGE

. . . . . . . . . . . . . . . . .FIND YOUR JOB IN THE LIST BELOW THEN GO TO
Acceptance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NTP-002
Circuit Pack Return Tag Data Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAD-107
Clear Automatic Power Monitor Test (Phase 1) Failure - XTSI Cabinet . . . . . . . . . . . . . . . . . . . . . . . TAP-119
Clear A-Link Controller (ALC) Unit Blown Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-114
Clear Diagnostic Failure By Analyzing Raw Data And Replacing Additional Suspect Circuit Packs . . . . . . . . . . TAP-110
Clear Interface Peripheral Unit Bus (IPUB) Unit Blown Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-115
Clear Controller Unit Blown Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-113
Clear Diagnostic Failure By Replacing Circuit Packs On TLP Suspected Faulty Equipment List . . . . . . . . . . . TAP-109
Clear Fan System Blown Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-117
Clear Fuse Alarm Circuitry Blown Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-118
Clear Protection Switch Client (PSC) Blown Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-116
Diagnose XTSI Cabinet Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DLP-505
Identify Conditions Causing Diagnostics To Complete With CATP Results . . . . . . . . . . . . . . . . . . . . . DLP-503
Clear Fan System Trouble - FAN LED Lighted On XTSI Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-121
Clear Fuse Alarm - FUSE LED Lighted On XTSI Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-112
Clear Power Alarm - POWER LED Lighted On XTSI Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-120
Clear DS3 Short Duration (10 Minutes Or Less) Red And Yellow Alarms Generated During a Protection Switch . . . . . TAP-124
Identify And Clear Power Group Power Alarm - Circuit Pack PA LED lighted in XTSI Cabinet . . . . . . . . . . . . TAP-123
Clear Major Alarm — XTSI Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-111
Clear Controller Failed To Erase Flash Memory Error - XTSI Cabinet . . . . . . . . . . . . . . . . . . . . . . . TAP-126
Clear No Input Power Alarm - NIP A/B LED Lighted On XTSI Cabinet Fuse Unit . . . . . . . . . . . . . . . . . . . TAP-125
Identify Program Listing (PR) For Failing Phase — XTSI Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . DLP-502
TASK INDEX LIST
LUCENT TECHNOLOGIES PROPRIETARY - Use Pursuant to Company Instructions
Layout Of Alarm LEDs on XTSI Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAD-106
IXL
001
Issue 2 JUN 1999
PAGE 1 of 2
234-351-011AC

. . . . . . . . . . . . . . . . .FIND YOUR JOB IN THE LIST BELOW THEN GO TO
Maintenance Philosophy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAD-100
Replace Air Filters - XTSI Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DLP-509
Specific Cautions And Warnings - XTSI Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAD-101
XTSI Cabinet Fuse Layout Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAD-103
Replace XTSI Cabinet D3U Paddleboard (470A Circuit Module). . . . . . . . . . . . . . . . . . . . . . . . . . . . NTP-004
XTSI Cabinet Physical Layout And Associated Equipment Drawings . . . . . . . . . . . . . . . . . . . . . . . . . TAD-105
Restore XTSI Cabinet Unit To Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DLP-507
Replace FUSE/FAN/POWER LED Terminal Board - XTSI Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . DLP-508
Test Fuse Unit NIP A/B LEDs — XTSI Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DLP-520
Remove XTSI Cabinet Unit From Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DLP-511
Replace Fuse Circuit Module - XTSI Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DLP-514
Replace Fuse And Filter Unit - XTSI Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-122
Test Power Group LEDs - XTSI Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DLP-504
XTSI Cabinet Unit Power Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAD-102
XTSI Cabinet Recommended Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAD-108
Scan And Signal Distributor (SSD) Flow - XTSI Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAD-104
Replace A-Link Cable - XTSI Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-127
Replace XTSI Cabinet Circuit Pack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NTP-003
TASK INDEX LIST
LUCENT TECHNOLOGIES PROPRIETARY - Use Pursuant to Company Instructions
XTSI Phase 41 Diagnostics Failure Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAD-128
Replace D3U To CSP Cable - XTSI Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-129
Replace Fan - XTSI Cabinet J4A034AD-1 (Fan Controller Board in Rear of Bay) . . . . . . . . . . . . . . . . . . . DLP-506
Replace Fan - XTSI Cabinet J4A034AE-1 (Fan Controller Board in Front of Bay) . . . . . . . . . . . . . . . . . . DLP-527
IXL
001
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PAGE 2 of 2
234-351-011AC

No acceptance test procedures are required for the Expanded
Time Slot Interchange (XTSI) cabinet. The readiness of
this cabinet to become a part of the working system was
established by the successful completion of Installation
Handbook test procedures.
ACCEPTANCE LUCENT TECHNOLOGIES PROPRIETARY - Use Pursuant to Company Instructions
Issue 2
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002
JUN 1999
PAGE 1 of 1

FOR DETAILS, GO TODO THE ITEMS BELOW IN THE ORDER LISTED . . . . . . . . . .
WARNING: A grounded antistatic wrist strap (R-4987 or equivalent) must be worn when handling circuit
packs. The wrist strap must be connected to a ground common to the circuit pack ground.
When appropriate wrist strap is not available, always touch grounded (exposed) metal before
handling circuit pack in any manner. Never pass an unprotected circuit pack to an ungrounded
person or touch components, leads or connector pins.
If Additional Circuit Packs Are To Be Replaced, Repeat From Step 1
Notify Technical Support Group That Circuit Pack Replacement Is Complete With Acceptable Diagnostic
—
—
—
—
1
2
5
4
Results
6— Record Results For Local Records
Using Trouble Ticket Or Verbal Instructions Received From Technical Support Group, Identify XTSI
3
Member Number, Unit, Circuit Pack Code And Circuit Pack Location Associated With Circuit Pack To
Be Replaced
DLP-505
DLP-500
Diagnose XTSI Unit Containing Circuit Pack Previously Replaced (DGN:XTSI a,b c:TLP!)
REPLACE XTSI CABINET CIRCUIT PACK AS DIRECTED BY TECHNICAL
SUPPORT GROUP LUCENT TECHNOLOGIES PROPRIETARY - Use Pursuant to Company Instructions
Replace Circuit Pack
NTP
003
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234-351-011AC

FOR DETAILS, GO TODO THE ITEMS BELOW IN THE ORDER LISTED . . . . . . . . . .
WARNING: A grounded antistatic wrist strap (R-4987 or equivalent) must be worn when handling circuit
packs. The wrist strap must be connected to a ground common to the circuit pack ground.
When appropriate wrist strap is not available, always touch grounded (exposed) metal before
handling circuit pack in any manner. Never pass an unprotected circuit pack to an ungrounded
person or touch components, leads or connector pins.
—
—
—
—
1
2
3
7
6
5
8— Record Results For Local Records
DLP-511
DLP-507
4
REPLACE XTSI CABINET D3U PADDLEBOARD (470A CIRCUIT MODULE)
DLP-505
DLP-515
AS DIRECTED BY TECHNICAL SUPPORT GROUP
Using Trouble Ticket Or Verbal Instructions Received From Technical Support Group, Identify XTSI D3U
Member Number Containing Paddleboard (470A Circuit Module) To Be Replaced
Diagnose XTSI D3U Containing Paddleboard (470A Circuit Module) Previously Replaced
Notify Technical Support Group That D3U Paddleboard (470A Circuit Module) Replacement Is Complete With
Acceptable Diagnostic Results
CAUTION: Extreme care must be taken when aligning paddleboard with retaining shroud to ensure
paddleboard is not installed onto pins outside of retaining shroud area. Misalignment of
paddleboard onto shroud could possibly cause power alarms in both controllers thus forcing an
XTSI controller duplex failure
If Additional D3U Paddleboards (470A Circuit Modules) Are To Be Replaced, Repeat From Step 1
(DGN:XTSI a,D3U b:TLP!)
At 1B Processor MTC Terminal, Restore XTSI D3U To Service (RST:XTSI a,D3U b!)
At 1B Processor MTC Terminal, Remove Identified XTSI D3U From Service (RMV:XTSI a,D3U b!)
LUCENT TECHNOLOGIES PROPRIETARY - Use Pursuant to Company Instructions
Replace D3U Paddleboard (470A Circuit Module)
NTP
004
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PAGE 1 of 1
234-351-011AC

XTSI CABINET OVERVIEW
The Expanded Time Slot Interchange (XTSI) complex includes
two XTSI cabinets measuring 72 inches high, 29.92 inches wide
and 23.39 inches deep. Only one XTSI cabinet is required to
house equipment for the initial XTSI release. The second
cabinet will remain vacant for the initial XTSI release and
Switch peripheral that replaces the functionality of the
Digital Interface Frame (DIF) and Time Slot Interchange (TSI)
frames. In addition to functionally replacing the DIF and TSI
frames, the XTSI cabinet will accept a DS3 transmission
interface. The XTSI cabinet is composed of four units:
Fuse and Filter unit (J4A034AC)
XTSI Controller (XTC) unit (J4A034AA)
XTSI Fan unit (J4A034AD)
XTSI Fabric unit (J4A034AB).
FUSE/FILTER UNIT
XTSI CONTROLLER (XTC) UNIT
The XTSI Controller (XTC) unit includes two circuit pack shelf
circuit pack types that are 7.67 inches high and 13.86
inches deep. The XTC backplane uses FASTEC technology
for pin layouts and equipment locations. The backplane is
silk screened to identify cable and paddleboard locations
on the rear of the XTC unit.
XTSI FAN UNIT
XTSI FABRIC (XTF) UNIT
The XTSI fabric (XTF) unit includes two circuit pack shelf
assemblies that are bolted together and electrically
to 44 circuit packs (22 circuit packs per shelf) with each
circuit pack slot keyed to accept only specific coded
circuit packs. The XTF unit accepts 4WB circuit pack types
that are 16.17 inches high and 13.84 inches deep. The
assemblies that are bolted together and electrically
connected via a common backplane. The XTC unit can house
up to 20 circuit packs (10 circuit packs per shelf) with
each circuit pack slot keyed to accept only specific
coded circuit packs. The XTC unit accepts TN, UN and KBN
The XTSI fuse and filter unit uses a modular design powered
by ten -48VDC feeders from a 4ESS Switch power distribution
be utilized in future XTSI releases. The XTSI is a 4ESS
XTF backplane uses METRAL technology for pin layouts and
FASTEC technology for equipment locations. The backplane
connected via a common backplane. The XTF unit can house up
is silk screened to identify cable and paddleboard
locations on the rear of the XTF unit.
The XTSI fan unit houses six fans and is mounted
between the XTC and XTF units. The fan unit directs
air from three fans upward through the XTC unit and from
the other three fans downward through the XTF unit. In
addition to fans, the fan unit is equipped with two
frame. Each of the ten power distribution frame -48VDC feeders
TTY jacks provide access to Bus A and B maintenance channels.
major fuse alarm signals for blown fuses; the two TEL jacks
alarm card and two TEL/TTY jacks. The alarm card controls the
identifying when the fuse is blown. The unit also contains an
uses 80-type flag fuses that provide a visual indicator
replaceable air filters; control circuitry and thermistors
fan system includes 6 thermistors that sense the air
A major alarm is activated when a failure of any fan
system component is detected.
provide access to the office telephony circuits and the two
that sense the cabinet’s cooling demands. The complete
is fused at 20 Amperes and filtered to reduce conductive noise
on feeders exiting the unit. The modular fuse unit contains 20
fuse circuit modules and each module contains 5 fuse positions
for a total of 100 fuse positions per frame. The XTSI frame
temperature exiting at the top and bottom of the cabinet.
MAINTENANCE PHILOSOPHY
LUCENT TECHNOLOGIES PROPRIETARY - Use Pursuant to Company Instructions
Issue 2 TAD
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The task index list (IXL) is structured to provide fast
access to the directly accessible procedures contained
within this TOP. Procedures not listed on the IXL are
designed to support the directly accessible procedures
with preconditioning and system restoration steps covered
designed to be directly accessed are a threat to equipment
operation and may compound trouble-clearing problems when
at a point in trouble clearing when analysis of a problem
is complete (the faulty component and/or condition
determined) and only the corrective action is required.
This situation requires special attention since most
procedures in this TOP are designed to both isolate and
clear the problem. If the TOP is entered under these
conditions, it is the sole responsibility of the user to
verify that the correct entry point on a directly
accessible procedure is identified. Otherwise, equipment
damage and/or interruption to service is possible.
Non-Trouble Procedures (NTPs)
Trouble Analysis Diagrams (TADs)
Trouble Analysis Procedures (TAPs)
Detail Level Procedures (DLPs).
knowledgeable and experienced personnel may access this TOP
Task Index List (IXL)
documented using Task Oriented Practices (TOPs). The TOP
written for both the experienced and inexperienced
maintenance personnel with appropriate bypassing
techniques built into the procedures. Therefore, when
using procedures written for personnel with different
experience levels, it is the responsibility of the user to
make the determination as to what their experience level
is and whether it is necessary to access the detail as
personnel to bypass the detail provided to complete
specific steps, it is assumed that the step is performed
correctly.
All procedures directly accessible from the IXL are
referenced. However, if it is determined by experienced
in those level procedures. Therefore, procedures not
accessed using a hunt-and-find method.
The more
contained in this Task Oriented Practice (TOP) are based
and improvements to the data are encouraged. Manufacturer,
XTSI CABINET DOCUMENTATION
software and test equipment employed. The procedures are
these procedures accomplish this depends upon input and
feedback from the user. Submittal of additions, corrections
engineering and software documentation such as Input/Output
XTSI CABINET TROUBLE CLEARING DOCUMENTATION STRUCTURE
is structured using different elements to present different
types of TOP procedures. These elements include:
(I/O) message manuals and schematic diagrams (SDs) which
The preventive maintenance and trouble-clearing procedures
upon the design of XTSI cabinet hardware, diagnostic
intended to aid personnel in performing routine preventive
maintenance trouble-clearing functions required to keep the
XTSI cabinet functional and trouble free. The degree to which
The XTSI cabinet trouble-clearing documentation is
Non-trouble procedures (NTPs) are used to document routine
preventive maintenance and other maintenance procedures
that are not directly related to a specific trouble.
are available to the customer are referenced where applicable
rather than duplicating that information in the TOP.
However, some portions of this type of documentation may be
utilized in procedures as examples for the purpose of
explanation. Test equipment (oscilloscopes, voltmeters, etc.)
and the parameters involved in circuits being tested,
adjusted or checked are usually prescribed. However,
the setup and method of operation of such equipment is not
described unless it is unusual or unique in some manner.
NOTE: It is assumed that all coaxial cabling is non-faulty.
service interruption. Extreme care must be exercised
Improper handling of cabling may damage cables or cause
when handling any coaxial cable.
MAINTENANCE PHILOSOPHY
LUCENT TECHNOLOGIES PROPRIETARY - Use Pursuant to Company Instructions
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Detail level procedures (DLPs) are used to document step-
by-step detailed procedures which attempt to perform a
single specific function. DLPs can be directly accessible
When documenting a procedural approach to trouble
clearing, certain assumptions are made. It is assumed that
only one fault is being cleared at a time. When directing
maintenance personnel to perform an action, it is assumed
from the IXL or accessed from NTPs, TAPs or other DLPs in
an attempt to provide additional detailed data to support
a specific step. DLPs written to be accessed from NTPs,
TAPs, and other DLPs are written to provide additional
detail and are targeted to the inexperienced audience.
that the action is performed correctly. Similarly, when
directed to make replacements, the replacement part is
always assumed to be good. Equipment used for testing,
both built-in (hardware and software) and commercial, is
assumed to be good. Input messages entered at the
maintenance terminal will be used to ensure the removal
and restoral of units while performing trouble-clearing
trouble-clearing procedures are designed for faults with
consistent fault signatures provide procedures with a
is possible that some faults will not present a
Procedure (TLP) pack list. If this occurs, the
diagnostic should be repeated a number of times and the
most consistent fault and TLP list used, following the
same general approach provided in the procedures. This
procedures. In addition, any time hardware is replaced,
clean straightforward approach to trouble clearing. It
consistent fault signature or a Trouble Locating
diagnostics must be run with an All-Tests-Pass (ATP)
result expected. These assumptions and the fact that
both the experienced and inexperienced audience.
accessed from the IXL, the procedures are targeted to
However, in cases where DLPs are written to be directly
trouble-clearing procedures which attempt to isolate and
clear specific problems. TAPs can be directly accessible
from the IXL or accessed only after a directly accessible
TAP has been exhausted and additional analysis and
Trouble analysis diagrams (TADs) are used to present
trouble-clearing aids such as simplified schematics,
Trouble analysis procedures (TAPs) are used to document
functional schematics, charts, pictorials, tables and text
describing system maintenance philosophy or trouble-
clearing strategies for a particular TOP volume. In
general, a TAD may be used to present any nonprocedural-
type information that will aid the user in understanding
or performing procedures in the TOP. TADs can be directly
accessed from the IXL or they may only be referenced from
the procedure from which they are intended to provide
additional support information to aid in clearing a
problem.
trouble-clearing effort is required to clear a trouble.
XTSI CABINET DOCUMENTATION/TRAINING TRADE-OFFS
XTSI CABINET TROUBLE-CLEARING APPROACH
will aid in performing routine preventive maintenance and
trouble analysis when problems arise. Documentation/
training trade-offs have been identified and agreements
reached as to the skills and knowledge to be possessed
by the target audience, subjects to be covered by the
training packages and procedures to be documented
in the TOP.
entry level knowledge of the XTSI cabinet equipment to
be maintained and a package of detailed procedures that
As a team, documentation and training share a single
TOPs with a comprehensive information package to
goal to provide the recipient of training and user of
support the XTSI cabinet equipment as designed.
This package will allow personnel to attain an
MAINTENANCE PHILOSOPHY
LUCENT TECHNOLOGIES PROPRIETARY - Use Pursuant to Company Instructions
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a list of procedures that are recommended for routine
PROCEDURE TITLEFREQUENCY
3M
The second level approach to clearing diagnostic failures
is accessed from the first level when attempts have failed
to clear the problem, or accessed directly from the IXL.
what to do with the summary and supplemental data printed
either with or instead of the SUSPECTED FAULTY EQUIPMENT
identification of faulty circuits and possibly additional
suspect hardware not previously identified. This second
level approach to clearing diagnostic failures is more
equipment, maintenance terminal techniques, diagnostic
printouts, schematic diagrams (SDs), program listings
PROCEDURE
NUMBER
(PRs), etc.
DLP-504
list. It is expected that this analysis will lead to the
This level is known as raw data analysis and describes
complex and requires an increase in the capabilities
cited in the first level with additional knowledge of the
identifies the recommended test equipment and tools
preventive maintenance. Information identifying these
Test Power Group LEDs —
XTSI Cabinet
Trouble-clearing procedures provided to clear diagnostic
The first level addresses what to do with a software
generated Trouble Locating Procedure (TLP) SUSPECTED
This first level approach to clearing diagnostic failures
equipment, maintenance terminal techniques and diagnostic
printouts. Access to this procedure is made directly from
the IXL.
repetitive diagnostic method should be used each time an
attempt is made to correct the problem so that it can be
determined if there is any change in the fault signature
due to the corrective action that has been taken. If the
action performed resulted in clearing the problem, an
All-Tests-Pass (ATP) diagnostic result should be expected.
is straightforward and requires some familiarity with the
failures are provided on two levels for the XTSI cabinet.
FAULTY EQUIPMENT list and provides a step-by-step
procedure for replacing suspect circuit packs one at a
time, running diagnostics and analyzing the results.
XTSI CABINET TEST EQUIPMENT AND TOOL LIST
The XTSI cabinet recommended tools list [TAD-108]
required to perform routine preventive maintenance
and trouble clearing on the XTSI cabinet.
XTSI CABINET ROUTINE PREVENTIVE MAINTENANCE TASK LIST
The routine preventive maintenance task list provides a
procedures is arranged in the following order from left
to right — Frequency, Procedure Title and Procedure
Number.
Recommended routine preventive maintenance procedures
include:
3M DLP-520Test Fuse Unit NIP A/B
LEDs — XTSI Cabinet
3M Replace Air Filters —
XTSI Cabinet
DLP-509
MAINTENANCE PHILOSOPHY
LUCENT TECHNOLOGIES PROPRIETARY - Use Pursuant to Company Instructions
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goals while performing any job are to complete the job safely
CAUTION - Identifies the possibility of service interruption.
WARNING - Identifies the possibility of equipment damage.
into two separate categories depending upon their importance.
Cautions will appear first and warnings will appear second.
When a condition exists that will cause more than one of the
identified admonishments, the highest priority will be used.
At the beginning of each category (CAUTIONS and WARNINGS), an
index will appear to identify each specific admonishment for
easy access. This element is not intended to replace or
supersede the step-by-step instructions provided in the
Non-Trouble Procedures (NTPs), Trouble Analysis Procedures
(TAPs) and Detail Level Procedures (DLPs) where applicable
cautions and warnings will be identified at the specific step
that they need to be observed.
GENERAL INFORMATION
This element will group the different admonishment types
SPECIFIC CAUTIONS AND WARNINGS — XTSI CABINET
LUCENT TECHNOLOGIES PROPRIETARY - Use Pursuant to Company Instructions
The cautions and warnings provided in this element are specific
to performing trouble-clearing and routine preventive
maintenance on the XTSI cabinet (SD-4A034A). The most important
while minimizing service interruptions and avoiding equipment
damage. Thus, cautions and warnings have been defined to
protect against these possible hazards:
TAD
Issue 2
234-351-011AC 101
JUN 1999
PAGE 1 of 5

CAUTIONS
The following is an index of the CAUTIONS that reside in
this element:
SPECIFIC CAUTIONS AND WARNINGS — XTSI CABINET
LUCENT TECHNOLOGIES PROPRIETARY - Use Pursuant to Company Instructions
2. D3U Paddleboard (470A Circuit Module) Replacement
Can Possibly Interrupt Service
1. Aligning D3U Paddleboard (470A Circuit Module) Onto
Backplane Pins
3. Working With Individual Connectors At D3U End Of CSP
To D3U Cable
4. Copying files for a UN650 CIA circuit pack
TAD
Issue 2
234-351-011AC 101
JUN 1999
PAGE 2 of 5

CAUTION 1 - ALIGNING D3U PADDLEBOARD (470A CIRCUIT MODULE)
ONTO BACKPLANE PINS
paddleboard with retaining shroud to ensure
paddleboard is not installed onto pins outside
of retaining shroud area. Misalignment of
paddleboard onto shroud could possibly cause
power alarms in both controllers thus forcing
an XTSI controller duplex failure.
CAUTION 2 - D3U PADDLEBOARD (470A CIRCUIT MODULE)
REPLACEMENT CAN POSSIBLY INTERRUPT SERVICE
672 trunks are associated with each XTSI D3U
circuit pack. Replacing a D3U paddleboard will
degrade service and possibly interrupt
established calls.
SPECIFIC CAUTIONS AND WARNINGS — XTSI CABINET
LUCENT TECHNOLOGIES PROPRIETARY - Use Pursuant to Company Instructions
Extreme care must be taken when aligning
CAUTION 3 - WORKING WITH INDIVIDUAL CONNECTORS AT D3U END
OF CSP TO D3U CABLE
Extreme caution must be taken when performing
the next steps. The connector just placed on
the spare D3U in the preceeding steps, and the
one you will replace in the following steps
will be in service.
CAUTION 4 - COPYING FILES FOR A UN650 CIA CIRCUIT PACK.
Do not attempt to copy files from another
UN650 CIA circuit pack in a different XTSI frame.
These files are frame specific and copying CIA
files from a UN650 CIA circuit pack in a different
frame will cause f-levels.
TAD
Issue 2
234-351-011AC 101
JUN 1999
PAGE 3 of 5

WARNINGS
The following is an index of the WARNINGS that reside in
this element:
1. Static Discharge
2. Excessive Force When Replacing Circuit Packs
3. Push/Pull Fuses Straight To Avoid Breakage
4. Fan Controller Board Replacement
5. Fan A Replacment
6. Verification Fan Is Not Running
SPECIFIC CAUTIONS AND WARNINGS — XTSI CABINET
LUCENT TECHNOLOGIES PROPRIETARY - Use Pursuant to Company Instructions
7. Failure to Force Out-Of-Service Unit Active Prior To
Circuit Pack Replacement in Active Mate or Helper Unit
8. Verify That You Are At a J4A034AD-1 XTSI Cabinet
9. Verify That You Are At a J4A034AE-1 XTSI Cabinet
TAD
Issue 2
234-351-011AC 101
JUN 1999
PAGE 4 of 5

cannot be properly seated before proceeding.
equivalent) must be worn when handling circuit
packs. The wrist strap must be connected to a
ground common to the circuit pack ground. When
appropriate wrist strap is not available, always
touch grounded (exposed) metal before handling
or touch components, leads or connector pins.
circuit pack in any manner. Never pass an
unprotected circuit pack to an ungrounded person
circuit pack, identify reason that circuit pack
R-4987
taken to ensure fuses are pushed in and pulled
out straight. Failure to push/pull fuses straight
can exert excessive pressure on fuse assembly
When inserting and removing fuses, care must be
Excessive force is not required to properly seat
A grounded antistatic wrist strap ( or
WARNING 1 - STATIC DISCHARGE
WARNING 2 - EXCESSIVE FORCE WHEN REPLACING CIRCUIT PACKS
WARNING 3 - PUSH/PULL FUSES STRAIGHT TO AVOID BREAKAGE
circuit packs. If equal pressure applied at top
and bottom of circuit pack does not smoothly seat
causing fuse assembly to crack or completely
break off and lodge in fuse circuit module.
WARNING 4 - FAN CONTROLLER BOARD REPLACEMENT
When replacing fan system controller board,
When replacing FAN A, care must be taken to
WARNING 5 - FAN A REPLACEMENT
fan blade movement while fan is being removed
WARNING 6 - VERIFICATION FAN IS NOT RUNNING
Place sheet of paper over grill of faulty fan
to verify fan is not running. If fan is running,
paper will be pulled against fan grill. The
paper can also be folded into a 1-inch wide
strip and inserted into the grill to stop any
from fan unit.
SPECIFIC CAUTIONS AND WARNINGS — XTSI CABINET
LUCENT TECHNOLOGIES PROPRIETARY - Use Pursuant to Company Instructions
avoid shorting fan to -48V terminal strip lugs
located directly above FAN A.
WARNING 7 - FAILURE TO FORCE OUT-OF-SERVICE UNIT ACTIVE
PRIOR TO CIRCUIT PACK REPLACEMENT IN ACTIVE
MATE OR HELPER UNIT
Failure to force an out-of-service unit active
prior to replacing circuit packs in an active
mate or helper unit could possibly cause a
duplex failure resulting in a service degrading
condition or customer service outage.
-48V terminal strip lugs located directly above
FAN A.
care must be taken to avoid shorting board to
WARNING 8 - VERIFY THAT YOU ARE AT A J4A034AD-1 XTSI CABINET
Make sure you are at a J4A034AD-1 XTSI Cabinet
by verifying that the fan controller is at the
rear of the bay.
WARNING 9 - VERIFY THAT YOU ARE AT A J4A034AE-1 XTSI
CABINET
Make sure you are at a J4A034AE-1 XTSI
Cabinet by verifying that the fan controller is
located at 44-188F in front of the bay.
234-351-011AC TAD
101
Issue 2 JUN 1999
PAGE 5 of 5

PUSHBUTTON
OS
ACK
GREEN LED
PUSHBUTTON
PUSHBUTTON
OFF
PA
IDENTIFIER
YELLOW LED
PUSHBUTTON TABLE A
POWER SWITCH LED INDICATORS
Power Off
Power Alarm
Acknowledge
Red
Red
Yellow
Green
Red
Power off
Unit out-of-service
Acknowledges operator request
NAME COLOR FUNCTION (WHEN LIGHTED)
Out-of-Service
OFF
OFF
RED
RED LED
RED LED
YELLOW
TOGGLE
SWITCH
RED LED
BLACK
BLACK
PA
OS
ACK
LTEST
MOR
- PUSHBUTTON/SWITCH
LEGEND:
ROS
- LED
POWER SWITCH
ON GREEN
FACEPLATE LAYOUT
Fault in power system
LIP
LIP Low Input Power Incoming -48V power lost due to blown fuse
or voltage less than -37.5 volts
IDENTIFIER
TABLE B
NAME
POWER SWITCH FUNCTIONS
SWITCH TYPE FUNCTION
ON Power On Pushbutton Powers up unit from power off state. No software
intervention required
PushbuttonOFF Power Off
Powers down out-of-service unit. When operated
in-service unit. Clears any alarm state. No
software intervention required.
Two
Position
Toggle When positioned to the left (normal position), a
request to restore unit to service is initiated.
intervention required.
simultaneously with MOR pushbutton, powers down
ACK LED will flash and OS LED will go off. Software
power group circuit packs.
Test power switch LED indicators and PA LEDs on
powers down in-service unit. No software
intervention required.
When operated simultaneously with OFF pushbutton,
Lamp Test Pushbutton
MOR PushbuttonManual Override
LTEST
When positioned to the right (request out-of-service
position), a request to remove unit from service is
Software intervention required.
initiated. ACK LED will flash and OS LED will light.
Request
Out-of-Service/
Normal
ROS/
NORM
NORM
XTSI CABINET UNIT POWER SWITCHES
LUCENT TECHNOLOGIES PROPRIETARY - Use Pursuant to Company Instructions
TAD
Issue 2
234-351-011AC 102
JUN 1999
PAGE 1 of 2

POWER CONTROL
LEDS SWITCHES
OTHER
CIRCUIT
PACKS
CIRCUIT PACK
INTERLOCK
CRAFT
INTERFACE
POWER RESET
TO POWER
MONITORS
TO POWER
CONVERTERS
SCAN
POWER
ON CLEAR
MAJOR ALARM
Power Switch Functional Block Diagram
SEQUENCER
SIGNAL DISTRIBUTOR
XTSI CABINET UNIT POWER SWITCHES
LUCENT TECHNOLOGIES PROPRIETARY - Use Pursuant to Company Instructions 102PAGE 2 of 2
TAD234-351-011AC
JUN 1999Issue 2

CNTROC
52-066
UN558
5A
CNTROB
52-066
UN558
5A
CNTROA
52-066
UN558
3A
PSC00
14-016
3A
PSC13
31-024
3A
PSC22
31-172
3A
PSC08
14-156
3A
A0
A
B
C
D
E
CNTROE
14-130
4WB5B
5A
CNTROD
14-130
4WB5A
5A
PSC09
14-164
3A
A1 A2
PSC15
31-040
3A
A3
PSC11
14-180
3A
PSC02
14-032
3A
PSC12
31-016
3A
ALM A
69-101
3A
A4
A
TEL
B
A
TTY
B
AB
NIP
LAMP
TEST
PSC19
31-148
3A
PSC03
14-040
3A
PSC10
14-172
3A
PSC16
31-048
3A
PSC05
14-056
3A
IPUB0
TN1994
52-188
3A
PSC04
14-048
3A
PSC23
31-180
3A
PSC01
14-024
3A
PSC14
31-032
3A
PSC18
31-140
3A
PSC07
14-148
3A
ALCO
52-014
UN545
3A
PSC20
31-156
3A
PSC21
31-164
3A
PSC06
14-140
3A
008 016 024 032 040 048 056 064 072 080 088 094 101
B4
B3
B2
B1
B0
A
TEL
B
A
TTY
B
AB
NIP
LAMP
TEST
088 094 101 110 118 126 134 142 150 158 166 174 182
CNTR1B
61-066
UN558
5A
PSC00
14-016
3A
PSC13
31-024
3A
PSC22
31-172
3A
PSC08
14-156
3A
CNTR1E
31-130
4WB5B
5A
CNTR1D
31-130
4WB5A
5A
PSC09
14-164
3A
PSC15
31-040
3A
PSC11
14-180
3A
PSC02
14-032
3A
PSC12
31-016
3A
PSC19
31-148
3A
PSC03
14-040
3A
PSC10
14-172
3A
PSC16
31-048
3A
PSC05
14-056
3A
IPUB1
61-188
TN1994
3A
PSC04
14-048
3A
PSC23
31-180
3A
PSC01
14-024
3A
PSC14
31-032
3A
PSC18
31-140
3A
PSC07
14-148
3A
ALC1
61-014
UN545
3A
PSC20
31-156
3A
PSC21
31-164
3A
PSC06
14-140
3A
ALM B
69-101
3A
CNTR1G
31-130
4WB5D
5A
CNTR1F
31-130
4WB5C
5A
ALC3
61-038
3A
PSC17
31-056
3A
A
B
C
D
E
Example of XTSI Cabinet Fuse Layout Chart
CNTROG
14-130
4WB5D
5A
CNTROF
14-130
4WB5C
5A
ALC2
52-038
3A
PSC17
31-056
3A
CNTR1C
61-066
UN558
5A
CNTR1A
61-066
UN558
3A
FAN A
44-032R
3A
FAN C
44-164R
3A
FAN E
44-032F
3A
FAN B
44-098R
3A
FAN G
44-164F
3A
FAN F
44-098F
3A
XTSI CABINET FUSE LAYOUT CHART
LUCENT TECHNOLOGIES PROPRIETARY - Use Pursuant to Company Instructions
TAD234-351-011AC
JUN 1999Issue 2
103PAGE 1 of 1

2.2K
510
+24V
.22
510
.22
+24V
15K
1.0M
300K
BACKPLANE
GROUND
2.2K
+24V
UNIT WITH POWER SWITCH EXTERNAL
TO 1B PROCESSOR CABINET
3.9K
3.9K
.001
EVEN BIT OF
SCAN MATRIX
BOARD GROUND
+5V
+5V
OC
OC
HC
15K
1.0M
300K
F/F
EVEN BIT OF
SD MATRIX
F/F
SD MATRIX
ODD BIT OF
+24V
.001
HC
ODD BIT OF
SCAN MATRIX
OS
LED
ACK
LED
POWER
SEQUENCER
POWER SWITCH
1B PROCESSING CABINET
SCAN & SIGNAL DISTRIBUTOR CIRCUITRY
SCAN AND SIGNAL DISTRIBUTOR (SSD) FLOW — XTSI CABINET
LUCENT TECHNOLOGIES PROPRIETARY - Use Pursuant to Company Instructions
TAD234-351-011AC
JUN 1999Issue 2
104PAGE 1 of 1