Coby CSMP120 Instruction Manual page 22

if you experience problems with the speaker system (e.g., no sound), please check the
following:
Ensure that the power cord is connected securely to the unit and the wall outlet.
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Ensure that the unit has been turned on.
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Ensure that the volume is set to an audible level.
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Ensure that the correct audio source has been selected.
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When playing iPod, ensure that the iPod is compatible with this unit, and that the proper dock adapter
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(supplied by Apple) is installed.
When listening to the radio, ensure that the correct radio frequency is selected.
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When using an auxiliary audio device, make sure that it has been connected securely to the AUX In jack
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with a 3.5mm male-to-male audio cable.
The CSMP120 does not turn on.
Ensure that the unit has been powered on (set the Power / Function switch to the "ON" position).
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Ensure that the AC adapter is connected securely to an AC ~120V/60Hz power outlet.
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Page 22 Troubleshooting & Support