TROUBLESHOOTING

SYMPTOM

POSSIBLE PROBLEM

SOLUTION

No Power LED lit

Universal power supply cord isn’t connected to a wall

Plug the universal power supply into a wall outlet and plug the power supply

(AC Operation).

outlet and/or the power supply connector is not

connector into the power supply jack.

 

plugged into the power supply jack on the back of

 

 

the system.

 

 

 

 

 

Surge protector (if used) isn’t powered on.

If the universal power supply cord is plugged into a surge protector, make sure

 

 

the surge protector is switched on.

 

 

 

 

Wall outlet is not functioning.

Plug another device into a wall outlet (same outlet) to confirm the outlet

 

 

is working.

 

 

 

 

Power isn’t turned on.

Slide Power switch to “On” position.

 

 

 

No Power LED

No batteries installed.

Install (4) AA batteries into the battery compartments located on the bottom

lit (Battery

 

of the iM4 system. Make sure the batteries are installed per the illustration in

Operation).

 

the battery compartments.

 

 

 

 

Power isn’t turned on.

Slide Power switch to “On” position.

 

 

 

No sound

Power isn’t turned on.

Verify the universal power supply cord is plugged into a wall outlet and the

from speakers.

 

power supply jack.

 

 

 

 

 

Verify batteries are installed if the universal power supply isn’t being used.

 

 

 

 

 

Verify the Power button has been positioned to the “On” position and the LED

 

 

is illuminated.

 

 

 

 

Volume is set too low.

Move the slider to the right to increase the volume.

 

 

 

 

 

Check volume level on alternate audio source device and set at mid-level.

 

 

 

 

Retractable signal cable (or a 3.5mm stereo cable

Connect signal cable to the audio source. Make sure the signal cables are

 

if using the auxiliary input) isn’t connected to

inserted firmly into the correct jacks.

 

audio source.

 

 

 

 

 

Retractable signal cable (or a 3.5mm stereo cable if

Make sure the signal cable is connected and fully inserted in the “line-out,”

 

using the auxiliary input) is connected to wrong

“audio-out,” or the headphone jack on your sound card or other audio source.

 

output on audio source.

 

 

 

 

 

Problem with audio source.

Test the speakers on another audio source by removing the retractable signal

 

 

cable from the audio source and connecting it to the “line-out,” “audio-out”

 

 

or the headphone jack of a different audio source (e.g., portable CD, cassette

 

 

player or FM radio).

 

 

 

Crackling sound

Bad connection.

Check connection of the retractable signal cable (or the 3.5mm stereo cable if

from speakers.

 

using the auxiliary input). Make sure it is connected to “line-out,” “audio-out,”

 

 

or the headphone jack on your MP3 player, CD player, laptop or other audio

 

 

source and NOT “speaker-out.”

 

 

 

 

A problem with your audio source.

Unplug the retractable signal cable (or the 3.5mm stereo cable if using the

 

 

auxiliary input) from the audio source. Then plug it into the headphone jack

 

 

of an alternate source (e.g., Walkman, Discman or FM radio).

 

 

 

Crackling sound

Volume level in operating system is set too high.

Check the operating system volume level and decrease if necessary.

from speakers

 

 

(when connected

 

 

to PC or laptop).

 

 

 

 

 

Sound is

Volume level on iM4 system is set too high.

Move the slider to the left to decrease the volume.

distorted.

 

 

Sound source is distorted.

WAV and .MID files are often of poor quality; therefore distortion and noise

 

 

 

are easily noticed with high-powered speakers. Try a different audio source

 

 

such as a music CD.

 

 

 

Sound is

Volume level in operating system is set too high.

Check the operating system volume level and decrease if necessary.

distorted (when

 

 

connected to PC

 

 

or laptop).

 

 

 

 

 

Radio

Too close to a radio tower.

Move your speakers to see if the interference goes away.

interference.

 

 

 

 

 

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Altec Lansing IM4 manual Troubleshooting Symptom Possible Problem Solution
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IM4 specifications

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