What might seem to be a malfunction in your unit may just be the result of slight misoperation or miswiring. Before calling service, first check the following table for possible problems.
?The power does not tur n ON.
The fuse has blown.
After checking for short circuits in the wires,replace the fuse with one with the same rating.
?NO Sound.
The cable connect incorrectness.
Exactitude connect of the cable.
?Noise on Radiopoor recepiton
Antenna and Antenna Cable.
Check antenna and antenna cable, the antenna base must be grounded and connected with good condition, repace antenna or antenna cable if needed.
?Noise on both Radio and CD
Poor ground,dirty or corroded at the car Battery posts
Check the black wire for proper grounding clean and tighten ground connection.
?No/Poor sound on one or more speakers
Speakers or speaker wiring or volume, Balance and Fader setting
Check the speaker wiring and test the speakers all in good condition check the setting of volume, Balance and Fader controls.
?CD sound skips
Installation the unit angle is greater than 45 
,or mounting is not fixed and the back strap is not secure.
Adjust the unit with mounting angle less than 45 
and make sure the unit is mounted securely and tighten with the back strap(supplied)
?Unit completely inoperative, no Light and Sound
Incorrect wire connection, Power RED/YELLOW or Ground wire or Blown fuse
Check the Red wire to +12 Volts with key lgnition witch, yellow wire to +12 Volts battery and black wire to ground. Check Fuse with red/yellow wire, or check the fuse block on your car.
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