80078_UM_TR20_N
www.jotron.com
80078_UM_TR20_N
www.jotron.com
6.5
GUIDE TO TROUBLESHOOTING
Troubleshooting steps:
Problem
Possible
causes
Possible
solutions
No indication on display Battery is discharged. Charge or change bat-
tery package.
You know there is a signal a) Squelch is muting.
a) Adjust squelch to 0.
coming, but TR20 is not b) Failure in receiver.
b) An authorised agent
responding.
must service the unit.
TX indicator is on during Use of wrong channel
Use same channel
transmitting but commu- number.
number as partner sta-
nication
is
impossible.
tion.
TX indicator is not
DW or TW enabled
Switch DW/TW off
responding during
transmitting
33
IMPORTANT!
The TR20 is a sealed waterproof radio and there are no user serviceable
parts inside. It must never be opened, except by authorised Jotron AS
agents. Unauthorised disassembly will invalidate the warranty.
See the next chapter for failure diagnosis. This may be of help when dis-
cussing problems with a Jotron AS agent.
Before shipping TR20 for repair, please check the fundamental procedures
on operation and battery condition.
If repair is necessary please contact the nearest Jotron AS agent.
UM Tron TR20 GMDSS vN.indd 33
07.03.2013 09:47:13
