LG CM9750 Owner's Manual

4 Troubleshooting

36

Trouble

shoo

ting

The unit does not work 
properly.

 

y Turn off the power of this unit and the connected external device (TV, Woofer, 

DVD-player, Amplifier, etc.) and turn it on again.

 

y Disconnect the power cord of this unit and the connected external device (TV, 

Woofer, DVD-player, Amplifier, etc.) and then try connecting again.

 

y Previous setting may not be saved when device power is shut off.

No Power.

 

y The power cord is not plugged in. Plug in the power cord.

 

y Check whether electricity failed. 

Check the condition by operating other electronic devices.

No sound.

 

y Check whether you select right function. 

Press FUNCTION and check the selected function.

 

y Check to see if the Speakers are connected correctly. Speaker cables 

connected correctly.

The unit does not start 
playback.

 

y An unplayable disc is inserted. Check the playable disc.

 

y No disc is inserted. Insert a disc.

 

y The disc is dirty. Clean the disc. (Refer to page 40)

 

y The disc is inserted upside down. 

Place the disc with the label or printed side facing upwards.

Radio stations cannot be 
tuned in properly.

 

y The antenna is positioned or connected poorly. 

Connect the antenna securely.

 

y The signal strength of the radio station is too weak. 

Tune to the station manually.

 

y No stations have been preset or preset stations have been cleared (when 

tuning by scanning preset channels). 
Preset some radio stations, see page 25 for details.