Lectrosonics Pro 4 Mini - Manual (Page 7)

TROUBLESHOOTING
SYMPTOM POSSIBLE CAUSE
NO POWER LEDs OR AUDIO 1) Power switch in the OFF position. Switch to
MAIN/EXT.
POWER LED LIGHTS ON CDM4
BUT NO LIGHTS ON CR185’s 1) Power leads in back not connected to receivers.
Check power connections.
NO POWER LEDs, ALL
CONNECTIONS CHECK OK 1) Gel-cell battery charge too low. Either switch
to INT 9V setting on CDM4, use an external 12 Vdc
power supply, or operate on 110 Vac with the CH-50
charger. If the internal batteries are used, be sure
that all the CR185 receivers are switched to INT
power as well.
POWER AND MODULATION LEDs ON,
BUT NO AUDIO 1) No audio connection to recorder or mixer. Check
connections.
POWER LEDs ON, NO MODULATION LEDs 1) Transmitters not on or in mute position. Check
transmitters.
2) Transmitters have dead batteries, check batteries.
POOR SIGNAL/NOISE OR DROPOUTS 1) Antenna leads not connected, Check antennas.
2) Main antenna improperly connected. Check antenna.
3) Antenna "blocked" or in poor RF location. Try moving
the system or the antenna.
4) Transmitter modulation improperly set. Check mod
levels.
INTERNAL GEL-CELLS NOT CHARGING 1) Check charger - Output voltage should be 14 to 20
VAC.
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