SoundMax SM-CDM1050 - Manual (Page 28)

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If unit fails to operate properly
Carefully read the instruction to make sure the unit is being operated properly. Check the
following before you take your unit to the local dealer for repair.
SYMPTOM POSSIBLE CAUSE SOLUTION
The volume control regulator
set in the minimal position Adjust sound level
Bad power connections Check to see that all the power and
speaker leads are securely
connected
No sound
The audio cassette receiver is
damaged
Take your unit to the local dealer
for repair
Acoustic system cables are
connected without observance
of polarity (+ or -) Check to see that all the power and
speaker leads are securely
connected
Damage speaker wire or
speaker
Replace the speaker or speaker
wires
Unnatural
sound
The audio cassette receiver is
damaged Take your unit to the local dealer
for repair
NOTE: Good ground connections eliminate most electrical noise problems and require tight
contact with the metal vehicle chassis. Remove plastics, paint or rust for good electrical contact.