No Sound In Port. In Function - LG MCV1306 Service Manual

3. NO SOUND IN PORT. IN FUNCTION

Does the customer select correctly
the PORT. IN function he or her wants to listen to?
Is "PORT. IN" displayed on VFD?
Turn the master volume clockwise
for the volume up.
Is there any sound
from the selected input source?
Are the sound spectrum level LED's
on the left and right side of the front panel
being changed up and down
according to the sound input gain?
Are the speaker cables connected correctly
between the speaker terminals on the unit
and the speakers?
The sound is output
from the speakers.
Sound OK
TRAINING MASTER
YES
YES
YES
YES
YES
YES
YES
Make sure to connect a cable
NO
between the PORT. IN jack of the unit and the Audio
output jack of a portable device like a MP3 player.
NO
Make sure to select the PORT. IN function
pressing the AUX/IPOD/PORT. IN button.
The volume level LEDs around the master volume
NO
will be turned on more and more
while turning it clockwise for the volume up.
Refer to a portable device's instruction manual
NO
and then check if there is sound output
from it connecting another audio system.
The sound spectrum level LED's will be turned on/off
NO
repeatedly at regular intervals. A speaker cable
might be short-circuited with the chassis ground.
Be careful not to be shorted each other.
NO
Make sure to connect the cables to each specified
connector tightly on the unit.
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