T2004 Multi-Control Head System Manual System Fault Finding 29
© Tait Electronics Limited May 2004
Problem
Transmit/ Receive audio is excessively noisy.
Suggestion
■ Confirm radio is OK by removing multi-drop network and connecting
a Primary control head directly to the interface board SK3.
■ If problem is in the network, check for cable faults, remove noise sources
or re-route cable away from noise sources.
■ Ensure mic clip is isolated from metal work to avoid earth loops.
Problem
Global mute is not functioning.
Suggestion
■ Check JP1 is fitted in the control head.
■ Check microphone clip is correctly earthed.
Problem
Control head only shows 2372A510 on power on or all digits and LEDs
flash.
Suggestion
■ One of the keys on the keypad is stuck down.
■ Keypad PCB has become contaminated with chemicals or liquids.
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