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Troubleshooting

KI-1586A

Telecenter® IV

Troubleshooting

RAULAND-BORG CORPORATION

3450

West Oakton Street, Skokie, Illinois

60076-2951

(708) 679-0900

Table of Contents

DISPLAY PHONE DIAGNOSTICS

#73

Hardware I/O Diagnostics .................................................................................. 2

General Procedures

.............................................................................................

System Halting and Voltage Measurements

.......................................................

Line Type Tests

C.O. and PBX Trunks .................................................................................... 7

Speakers.. ........................................................................................................ 8
Phone Lines

................................................................................................... 9

Call-In Switches .............................................................................................. 10

#74 Call-in Sensitivity (RP2) Adjustment .................................................................. 11

#75 LLM Line Link Tests ............................................................................................ 12

COMPUTER AIDED DIAGNOSTICS

Computer Monitor Set-up ..........................................................................................

Serial Port Monitor Commands ...... ............................................................................ 14

Other Serial Port Output ............................................................................................ 15

TROUBLESHOOTING AND REPAIR

TCN Find-It Fix-It Procedures

Time Saving Hints and Suggestions

...................................................................

System Won’t Run or Locks-up ............................................................................ 16

System Will Not Program

.....................................................................................

Phone Won’t Ring ................................................................................................ 17

Time Tones Do Not Work

...................................................................................

All-Page Problem .................................................................................................. 17

Phone Rings-back Upon Hanging-up

.................................................................

System Misdials or Won’t Allow Access (Intermittent) ...................................... 18
Talk Path Noisy or Dead (Intermittent)

.............................................................

Crosstalk On Lines

...............................................................................................

Phone Rings When Call Should Go To Attendant

........................................ ..1 ...

False Call-ins After All-Call or Time Tone ............................................................

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 ................................................................................................................

Loop Sense Measurement .................................................................................... 24

Line Rebalancing Procedure

................................................................................

Console Interface Adapter (TC4420) .................................................................. 27

LCD Display Problems (General) ........................................................................ 27

Single Link Staff Phone Problems (General)

.....................................................

Speaker Intercom Problems (General)

...............................................................

Interconnect Problems (General)

.......................................................................

QUICK REFERENCE CHART ..............................................................

1989

Rauland-Borg Corporation (Orig.

10/88; Rev. l/89)

Page 1 of 30

Содержание Telecenter IV

Страница 1: ...ll 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 In...

Страница 2: ...ne connected to a link To avoid this problem reset the system after performing this diagnostic GENERAL PROCEDURES Step 1 Dial 73 on a display phone The display will ask for a Physical Number When the...

Страница 3: ...ar HT Hook switch H and Call in switch T status for the Subject line This field will display some combination of two characters from the following lists e g R H Hook switch status character will be ei...

Страница 4: ...hone and its receiver will be disconnected from it and reconnected to the test link 5 6 Turn off the speaker relay Disconnect the single link staff phone relay This will disconnect the specified singl...

Страница 5: ...5 seconds on and 5 seconds off can be obtained for performing audio measurements or listening tests The tone is available to the test phone or any phone in the link with it Little display interaction...

Страница 6: ...ors 12 13 14 15 16 17 and 19 The least significant four bits measured on con ductors 19 20 18 21 Pin 18 is at binary position 2 represent the LLM circuit number 0 to 15 The remaining bits represent th...

Страница 7: ...he link and return to the test phone link Caution Do not press 4 again it will disconnect the specified line from the trunk and the call in progress will be cut off Trunk idle Dial tone is received at...

Страница 8: ...audible at the test phone If there is no audio a ground or activated privacy switch may be present Press 5 and verify the V goes off and the supervisory beep discontinues If this doesn t happen anoth...

Страница 9: ...iately press 4 to disconnect from the link and return to the test phone link Press 7 or to go to the next physical number and return to Step 1 to continue testing Caution Do not press 4 again the spec...

Страница 10: ...hones A and B by pressing 4 on the test phone or reset the system Call in Switches The main program detects the status of each call in switch as a function of its relationship to ground This enables t...

Страница 11: ...the MIO Monitor the test phone receiver for a clear tone while adjusting RP2 located at the front of the MI0 near the CPU flat cable in the following manner Slowly turn RP2 counter clockwise until th...

Страница 12: ...16 times the time period specified in Step 2 i e if Step 2 value is 120 this period is 32 seconds Note During this time period the system is making and breaking the connection between the two phones...

Страница 13: ...ng checklist Baud rate Jumper setting on TCIV CPU Com Port Serial Port COMl COM2 etc 8 bit no parity Full Duplex Input characters are displayed when returned from the TCIV Step 3 Test the program by c...

Страница 14: ...ode 64100 which is FA64 in hexidecimal notation to zero enter FA64 0 0 Display the byte from the reference address and increment the address Halt the TCIV program Location Code 64100 must have been se...

Страница 15: ...are connected disconnected with which receiver and if tones are produced what they are It also reports Call Control Console keystrokes Turn on the function by adding 8 192 to the Receiver Time Limit...

Страница 16: ...12 Vdc and 5 Vdc A short from 5 volts to ground can be caused by a shorted over voltage protection diode Dl on the CPU This diode protects 5 volt components on the CPU from damage by 12 volts in case...

Страница 17: ...tep 3 If the tone activates check the master clock and ensure it activates input by going lower than 6 vdc for 5 sec If more than one zone make sure the master clock activates all necessary zones at t...

Страница 18: ...d Intermittent Step 1 Use 75 diagnostic and test all 16 links in system using a touch key to send a tone Defects with particular links can be further categorized as follows Defect on one line only Sus...

Страница 19: ...ttributes for DIL instead of AAI False Call ins After All Call or Time Tones step 1 Check the amplifier gain adjustment If too high the amplifier will clip the signal and cause this symptom Step 2 Che...

Страница 20: ...fers This is accomplished in two phases First the TAP function ensures that the person attempting to transfer a call does not lose it by breaking the loop for too long Second that hanging up on one ca...

Страница 21: ...ep 1 Connect one end of a 100 ohm 2 watt resistor to one of the 12 Vdc M terminals on the MIO Step 2 Connect an 18 AWG wire between the other end of the resistor and a good ground such as a cold water...

Страница 22: ...pt to use the line and verify it is locked out Note This lockout will not work if the line has a defect that allows it to respond to incorrect physical number addressing Link Lockout Step 1 Refer to t...

Страница 23: ...or load is connected to the call in terminal There is a serious fault when the number stored here reaches 64 One such fault may be an improperly set call in sensitivity pot RP2 on the MIO If RP2 is no...

Страница 24: ...f 15 ma and should be sufficient for detection by the line hybrid causing the TCIV to connect the line to a link for dial tone sending and receiving If Step 3 was successful verify a digital low on th...

Страница 25: ...t press any tone buttons on the line being rebalanced as this would result in abnormal d c and damage the accuracy of the rebalancing Measure the tone level from terminal T to ground Vt and the voltag...

Страница 26: ...Line Balancing Set up Part of LLM Circuit r 71 12vDC T Listening Rl R2 1OOK Matched within 1...

Страница 27: ...value in Location Code 57364 again If Location Code 57364 is still set at 0 the interface board is working Step 6 Turn TCIV Power Off Step 7 Place the J3 jumper back to the NORMAL position remove the...

Страница 28: ...call in terminal of the speaker Check the wiring for a short to ground or other problem Check the DIP switch setting of the Speaker Control Boards serving the problem speaker and single link staff ph...

Страница 29: ...OA terminals CT and CR Other Less than 2 Vdc indicates a central office time out fault Disconnect for 2 seconds to get 48 Vdc back See Special Notes on Central Office Trunks under the Line Type Tests...

Страница 30: ...2 Physical number of line to ring after DIL AAI timeout 64224 TC44OO Audio physical number of hardware TCIV line 64226 TC4400 Trunk Lines physical numbers 64228 TC4400 Attendant software TCIV lines 64...

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