I have the same exact unit and cleaning did not help so I tried to adjust the laser. On the back of the unit, you will see a silver screw towards the top and center of the unit. Grab a flashlight and look through the ventilation slots directly below the silver screw. You can see a small brown circuit board with two green connectors and an orange potentiometer (dial looking thing that has a phillips head impression in it) to the right of the connectors. Grab a long skinny screw driver and turn the pot a hair of a turn away from the original setting. After the small turn, start a CD up and gently tap on the side of the Aiwa unit to see if it still skips. My fix was to turn it less than 1/8 turn clockwise from the original setting. Any more than a 1/4 turn and the laser will not read the CD.
Tommy, May 2008