Yamaha CRX-E300 Owner's Manual - Page 25
ADDITIONAL INFORMATION, Troubleshooting - service
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English ADDITIONAL INFORMATION 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. When taking the service, the MDX-E300 or KX-E300 may be needed. For details, contact your authorized YAMAHA dealer or service center. RECEIVER SYMPTOM The unit does not switch ON when the STANDBY/ON switch is pressed. No sound from one speaker. The sound suddenly goes off. No sound from an external unit connected with this unit or play does not begin. Sound distorted. Excessive static in FM broadcasts. Noise increases during stereo broadcasts. Stereo broadcasts are noisy and STEREO indicator blinks on and off. Cannot select preset stations. Buzzing or static during AM broadcasts. AM broadcast sensitivity is poor. Cannot set timer. The unit does not work normally. CAUSE The AC power cord is not connected or not completely connected. Loose speaker connections. The protection circuit has been activated because of a short circuit, etc. Incorrect cord connections. Input source selection is not proper. The component connected to this unit is disconnected from AC outlet. Interference from starting motor of a nearby car. Interference from the thermostat of a nearby electrical appliance. Antenna input is too weak due to obstructions or excessive distance from the broadcasting station. Insufficient antenna input. Preset memory has been erased. Interference from sources such as lightning, fluorescent lights, electric motors or thermostat of nearby electrical appliance. TV or microprocessor is being used nearby. Radio signal is weak or the antenna is not properly connected. Current time is not set. The internal microcomputer has been frozen by an external electric shock (lightning, excessive static electricity, etc.) or the power supply with low voltage. REMEDY Securely connect the power cord. Connect properly. Check that the speaker wires are not touching each other and then turn the unit back on. Connect the cords properly. If the problem persists, the cords may be defective. Make a proper input source selection. Connect the AC power cord of the component to an AC outlet. Position the FM antenna as high and as far away from nearby roads as possible. Connect using a coaxial cable. Check the antenna connection. Install a multi-element type FM antenna if possible. Install an antenna appropriate for the electric field strength of your area. Reprogram memory presets. The problem is difficult to eliminate, but can be lessened by grounding AM loop antenna. Move away from TV or microprocessor. Properly connect the AM loop antenna. Change orientation of the AM loop antenna. Install an external AM loop antenna. Set current time. Unplug the AC power cord from the wall outlet, and then plug in again after about one minute. 21