Yamaha AV-S70 Owner's Manual - Page 31

PREPARATION OPERATION TROUBLESHOOTING Be sure to investigate thoroughly before requesting repairs or after service. If it cannot be corrected, or if the problem is not listed in the SYMPTOM column, disconnect the power cord and contact your authorized YAMAHA dealer or service center. Notes • Sometimes the unit may cease to recognize operations due to a mistaken operation or as a result of strong external noise (such as irregular voltage due to shock of impact, excessive static electricity, or lightning strike). If this happens, first disconnect the power cord, wait about 30 seconds, re-connect the power cord, and try the desired operation again. • When requesting repairs or after service of the YAMAHA subwoofer and rear speakers NX-SW70 (sold separately), be sure to bring along with this unit. s General SYMPTOM No sound output at all. A "humming" noise is present. The STANDBY indicator flashes slowly. There is noise in the tuner or TV and the video image is unstable. CHECK • Is the AC power supply cord connected? • Is the TV or VCR connected correctly? • Is the input source selected correctly? • Has this unit's audio temporarily been lowered? • Hum caused by external electromagnetic waves may be generated. Try inverting the right-left polarity of the power cord and re-insert into the AC outlet. • The unit is in Auto Power Off mode. Turn off the main power if the unit is not to be used for an extended period of time. • Is a tuner or TV that uses an indoor antenna located near the unit? Use of an outdoor antenna is recommended. Refer to page 14 10 - 12 17 18 14 21 - s When using a DSP program SYMPTOM Movie dialog and other audio is difficult to hear. CHECK • Are you using one of the DSP programs CONCERT or SPORTS? Select the other program. Refer to page 19, 20 s When using the remote control SYMPTOM The remote control does not function properly. Cannot control other component. CHECK • Are the batteries used up? • Is the remote control pointed at the sensor? • Is the remote control too far from or too close to the sensor? • Is direct sunlight or other intense light (such as an inverter fluorescent lamp) striking the sensor? • Is another remote control being used at the same time? • Have the batteries been inserted in the correct direction? • Has the remote control selector button "S70" been pressed? Press "S70" when you want to control this unit after controlling another component. • Has the correct manufacturer code been set? • Has the remote control selector button corresponding to the component to be controlled been pressed? Refer to page 3 3 3 3 3 2 - 23 26, 27 REMOTE CONTROL APPENDIX English 29