Yamaha CD-S303 CD Player (Black) - Manual (Page 23)

En
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Buzzing or hum noise is heard. The RCA stereo cable is not connected firmly.
Connect the RCA stereo cable firmly. If the symptom does not improve,
check to see whether the cable itself is defective.
10
Noise in the tuner The unit is located close to the tuner.
Relocate the unit farther away from the tuner, or turn off the power to
the unit.
—
The disc tray is making noise. The disc is deformed. Use a non-deformed disc. —
No indication on the display The PURE DIRECT function is turned on Turn the PURE DIRECT function off. 15
No folder name or file name appears on
the information display. Characters other than one-byte alphanumeric are used for the folder or
file name.
Use one-byte alphanumeric characters for the folder and file names. 15
The remote control does not work or
function properly.
The batteries are weak. Replace all batteries. 9
Wrong distance or angle. Use the remote control within the operative range. 9
Direct sunlight or lighting (from an inverter type of fluorescent lamp,
etc.) is striking the remote control sensor of this unit.
Reposition the orientation of the lighting or the unit. —
Problem Cause Solution Page