Yamaha CDX-993 Owner's Manual - Page 21
Troubleshooting
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English TROUBLESHOOTING If the unit fails to operate normally, check the following points to determine whether the fault can be corrected by the simple measures suggested. If it cannot be corrected, or if the fault is not listed in the SYMPTOM column, disconnect the power cord and contact your authorized YAMAHA dealer or service center for help. SYMPTOM The player does not switch ON when the POWER switch is pressed. It happens that this unit does not work normally. The disc tray does not close completely. Play does not begin. Play is delayed, or begins at the wrong place. No sound. Sound "skips." Sound "hums." Noise from a nearby tuner. Noise from inside of the disc tray. The remote control transmitter does not work. PROBABLE CAUSE The power cord is not connected or not completely connected. There is an influence of strong external noise (lightning, excessive static electricity, etc.) or a misoperation was performed while using this unit. A foreign object is obstructing the tray. The disc is damaged. There is moisture on the laser pickup. The disc has been loaded upside down. The disc is dirty. The disc may be scratched or damaged. Improper output cable connections. Improper amplifier operation. The player is being subjected to vibrations or impacts. The disc is dirty. Improper cable connections. The tuner is too close to the player. The disc may be warped. The batteries of this remote control transmitter are too weak. Direct sunlight or lighting (of an inverter type of fluorescent lamp etc.) is striking the remote control sensor of the main unit. REMEDY Securely connect the power cord. Turn this unit power off and disconnect the AC power from the AC outlet. After about 30 seconds have passed, connect the power and try again. Carefully check the disc tray and remove the foreign object. Check the disc carefully; replace it if necessary. Wait 20 to 30 minutes after switching the unit ON before trying to play a disc. Reload the disc with the label side up. Clean the disc. Check the disc carefully; replace it if necessary. Connect the cables properly. If the problem persists, the cables may be defective. Set the amplifier controls to the correct input selection. Relocate the player. Clean the disc. Securely connect the audio cables. If the problem persists, the cables may be defective. Move the tuner and player farther apart. Replace the disc. Replace the batteries with new ones. Change position of the main unit. To prevent a malfunction of this unit • Do not use any non standard shaped CD (heart etc.) available on the market, because it may damage the unit. • Do not use a CD with tape, seals, or paste on it, because damage to the unit may result. 21