CHC i80 Maintenance Manual

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5: Radio problem
5.1：
Cannot get the radio signal frequency setting not successful
In rover radio mode, it cannot get the radio signal, Radio LED didn’t flash.
Detection Method&Solution:
(1) Wrong settings if yes check all the settings and set the right parameters
(2) Radio module problem(please check the power supply voltage
R17:3.3V/R15:4V/R16:5V/R18:9V)if the power voltage is not correct please replace
the radio module
(3)Radio module connect cable problem if yes, please replace the TNC based cable.
(4)Radio module converter board problem, if yes please replace the converter board
(5)check whether can set the radio frequency if no, please replace the converter
board.
The arrow point out R17:3.3V/R15:4V/R16:5V/R18:9V
R17:3.3v/R15:4v/R16:5v/R18:9v as the picture attached：
5.2：Radio signal not stable
Fault description:

CHC i80 Specifications

General

Brand	CHC
Model	i80
Category	Receiver
Language	English