Tyco Electronics M7200 Benutzerhandbuch

If the radio is not operating properly, check Table 7-1 for likely causes. For additional assistance, contact 
a qualified service technician. 

Radio will not turn on.  No power. 

Test the connection to the vehicle power 
supply. 

Radio will not turn 
off. 

If in multiple control head 
configuration, one of the attached 
control heads is still powered up. 

Power off all control heads. 

Radio will not register 
or does not receive 
provisioning data. 

Bad logon credentials. 

Check logon and password. 

No audio. 

Speaker volume is muted. 

Increase the volume level. 

Poor audio. 

Transmitting or receiving in a 
poor coverage area or subject to 
interference. 

Check network connectivity and move to a 
better coverage area if possible. Report the 
area without coverage to an authorized 
network technician. 

Poor display visibility.  Ambient Light Sensor is 

obstructed. 

Clear the obstruction and give the sensor a 
clear path to ambient light. 

No network 
connectivity icon in 
display. 

Radio is out-of-range or cannot 
connect with the OpenSky 
network. 

Base station network connection 
has failed. 

Return to coverage area if possible and 
wait for condition to clear. 

Use single-site trunking or switch to an 
alternate channel. 

Radio will not 
transmit. 

Radio may be out of coverage 
area or may be overheated. 

Return to coverage area if possible. If 
overheated, let radio cool before retrying 
transmission. Report this failure to an 
authorized technician. 

Radio will not 
transmit (transmit 
indicator does not 
flash). 

Radio may be experiencing low 
voltage. 

The M7200 will cease to transmit if the 
voltage drops below 8.5 volts. Have the 
battery checked by an authorized 
technician. 

Radio powers off for 
no apparent reason. 

Radio may be experiencing very 
low voltage.  

The M7200 automatically powers down 
when voltage drops below +5.0 volts. 
Have the battery checked by an authorized 
technician. 

“Warning: No MRU” 
Message. 

Radio control head is unable to 
communicate with mobile radio 
unit (radio transceiver). 

Have the radio connections checked by an 
authorized technician. 

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