Sony CDX-4000X Operating Instructions (primary manual) - Page 20
Troubleshooting guide - problems
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Troubleshooting guide The following checklist will help you remedy the problems you may encounter with your unit. Before going through the checklist below, check the connection and operating procedures. General Problem Cause/Solution No sound. •Cancel the ATT function. •Set the fader control to the center position for two-speaker system. •Rotate the dial clockwise to adjust the volume. The contents of the memory have been erased. •The power cord or battery has been disconnected. •The reset button has been pressed. t Store again into the memory. Indications do not appear in the Remove the front panel and clean the connectors. See display. "Cleaning the connectors" (page 17) for details. No beep sound. •The beep sound is cancelled (page 16). •If you connect an optional amplifier and do not use the built- in amplifier, the beep sound will be deactivated. CD playback Problem A disc cannot be loaded. Playback does not begin. A disc is automatically ejected. CD will not be ejected. The operation buttons do not function. The sound skips due to vibration. The sound skips. Cause/Solution •Another CD is already loaded. •The CD is forcibly inserted upside down or in the wrong way. Defective dirty CD. The ambient temperature exceeds 50°C (122°F). You have closed the front panel or pushed the disc forcibly into the unit while the unit was ejecting the disc after you pressed Z. t Press the reset button. Press the reset button. •The unit is installed at an angle of more than 60°. •The unit is not installed in a sturdy part of the car. A dirty or defective disc. 20