Rauland-Borg Telecenter IV User Manual

Troubleshooting
KI-1586A
Telecenter® IV
Troubleshooting
RAULAND-BORG CORPORATION l 3450 West Oakton Street, Skokie, Illinois 60076-2951 l (708) 679-0900
Table of Contents
DISPLAY PHONE DIAGNOSTICS
#73 Hardware I/O Diagnostics
..................................................................................
2
GeneralProcedures
..............................................................................................
2
System Halting and Voltage
Measurements
........................................................
6
Line Type Tests
C.O. and PBX Trunks
....................................................................................
7
Speakers..
........................................................................................................8
Phone Lines
....................................................................................................
9
Call-In Switches
..............................................................................................
10
#744 Call-in Sensitivity (RP2) Adjustment
..................................................................
11
#75 LLM Line Link Tests
............................................................................................
12
COMPUTER AIDED DIAGNOSTICS
Computer Monitor Set-up
..........................................................................................
13
Serial Port Monitor Commands ......
............................................................................
14
Other SerialPort Output ............................................................................................
15
TROUBLESHOOTING AND REPAIR
TCN Find-It Fix-It Procedures
Time Saving Hints and Suggestions
....................................................................
16
System Won’t Run or Locks-up
............................................................................
16
System Will Not Program
......................................................................................
16
Phone Won’t Ring
................................................................................................
17
Time Tones Do
Not Work
....................................................................................
17
All-Page Problem
..................................................................................................
17
Phone Rings-back Upon Hanging-up
..................................................................
18
System Misdials or Won’t Allow Access
(Intermittent)
...................................... 18
Talk Path Noisy or Dead (Intermittent)
..............................................................
18
Crosstalk On Lines
................................................................................................
18
Phone Rings When Call Should Go To Attendant
........................................ ..1
...
19
False Call-ins After All-Call or Time Tone
............................................................ 19
Supplementary Procedures
Finding Duplicate Numbers
................................................................................
20
Phone Line TAP Functions (Transfer Capability and Cradle Switch Tests)
......
20
Ground Resistance
Measurement
........................................................................
2 1
Loss Measurement
................................................................................................ 21
Lockout (Line, Link, or Receiver)
........................................................................22
Statistics ................................................................................................................
23
Loop Sense Measurement
....................................................................................
24
Line Rebalancing Procedure
................................................................................
25
Console Interface Adapter
(TC4420)..................................................................
27
LCD Display Problems (General)
........................................................................
27
Single Link Staff Phone Problems
(General)
......................................................
28
Speaker Intercom Problems
(General)
................................................................
28
Interconnect Problems(General)
........................................................................
29
QUICK REFERENCE CHART
..............................................................
30
1989 Rauland-Borg Corporation (Orig. 10/88; Rev. l/89)
Page 1 of 30

Rauland-Borg Telecenter IV Specifications

General

Brand	Rauland-Borg
Model	Telecenter IV
Category	PBX
Language	English

Summary

Display Phone Diagnostics

#73 Hardware I/O Diagnostic

Primary diagnostic for TC4 system, exercises features and functions via display phone, accesses TCIV hardware.

General Procedures for #73 Diagnostic

System Halting and Voltage Measurements

Line Type Tests

C.O. and PBX Trunk Testing

Steps to test Central Office and PBX trunks using the #73 diagnostic, including trunk busy and idle conditions.

Speaker Diagnostics

Call-in Switches Testing

Call-in Sensitivity (RP2) Adjustment

LLM Line Link Test

Computer Aided Diagnostics

Computer Monitor Setup

Steps to connect a computer to the TCIV CPU via serial port for diagnostic purposes.

Serial Port Monitor Commands

TCIV Troubleshooting and Repair

TCIV Find-It Fix-It Procedures

Quick reference for troubleshooting symptoms and applying fix-it methods based on detailed lists.

System Won't Run or Locks Up

Troubleshooting steps for system lock-up issues, including voltage checks and board connections.

System Will Not Program

Procedure for resolving issues where the system cannot be programmed, checking attributes and jumpers.

Phone Won't Ring Troubleshooting

Time Tones Do Not Work

All-Page Problem Troubleshooting

System Misdials or Won't Allow Access

Talk Path Noisy or Dead

Crosstalk On Lines

Phone Rings When Call Should Go To Attendant

False Call-ins After All-Call or Time Tones

Ground Resistance Measurement

Lockout Functions (Line, Link, or Receiver)

Line Lockout Procedure

Link Lockout Procedure

Receiver Lockout Procedure

System Statistics Monitoring

Loop Sense Measurement

Line Rebalancing Procedure

LCD Display Problems Troubleshooting

Single Link Staff Phone Problems

Unclearable Call-in Troubleshooting

Interconnect Problems Troubleshooting