TOA Electronics EX-16 - Manual (Page 31)

4.3.3 Relationship Between Ambient Noise and Conversation Mode
The EX-16 system is provided with voice switches for the press-to-talk
function which is required when the ambient noise level is high. Below is
a guide for using the press-to-talk function.
5. Trouble Shooting Guide
Repairing of the EX-16 system is basically done by replacing defective
units with good ones. The system's faults in an installation can be divided
into the following categories.
1. Faults in an exchange
2. Faults in a station
3. Faults in cable
To make system repairing easier, find which category is involved, then
refer to the chart below for assistance in fault-finding.
Fault in an exchange. Cable fault.
* Power supply
* Plug-in unit (Common control) * Mis-wiring such a short, broken wire, etc.
* Misconnection in station jack.
Fault in a station.
* Key board switch fault.
* Board assembling fault.
* Speaker, microphone fault.
* Microswitch, connecting cable fault.
All stations do not operate.
Same symptom in every station.
Fault in specific station only.
(Up to 60 phons)
(A)
(Up to 60 phons)
(A)
(Hands free)
(Hands free)
(Hands free)
(Press-to-talk)
(Up to 60 phons)
(B)
(Above 60 phons)
(B)
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