TOA Electronics TOAEXES-5OOO manual Trouble Shooting Guide

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8.TROUBLE SHOOTING GUIDE

Repairing of the EXES-5000 system is basically done by replacing defective units with good ones. The system's faults in an installation can be divided into the fol- lowing categories.

1.Faults in an exchange

2.Faults in a station

3.Cable faults

To make system repairing easier, find which category is

involved, then refer to the chart below for assistance

in fault finding.

All stations do

not operate.

Fault

in specific station

Same symptom in

every station.

only.

 

Fault in an exchange. Cable fault. Fault in a station.

Power supply

Mis-wiring between exchange

Plug-in unit

and terminal board.

(Common control)

Mis-wiring such as short,

Back wiring on

broken wire,

etc.

frame

Misconnection

in station

 

jack.

 

Key board switch fault. Board assembling fault. Speaker, microphone fault. Microswitch, connecting cable fault.

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Contents TOAEXES-5OOO Trouble Shooting Guide Start Is voltage selector set correctly? HOW to Find Short Between T-LINE and R-LINE Exchange Exchange Fault in Specific Station only Produces reverberation Speech and Function Test Use all number keys Memo Memo EX57-01R79-2
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