Sony STR-K740P Operating Instructions (primary manual) - Page 50

Additional Information Precautions On safety Should any solid object or liquid fall into the cabinet, unplug the receiver and have it checked by qualified personnel before operating it any further. On power sources • Before operating the unit, check that the operating voltage is identical with your local power supply. The operating voltage is indicated on the nameplate at the rear of the receiver. • The unit is not disconnected from the AC power source (mains) as long as it is connected to the wall outlet, even if the receiver itself has been turned off. • If you are not going to use the receiver for a long time, be sure to disconnect the receiver from the wall outlet. To disconnect the AC power cord, grasp the plug itself; never pull the cord. • (Models of area code U, CA only) One blade of the plug is wider than the other for the purpose of safety and will fit into the wall outlet only one way. If you are unable to insert the plug fully into the outlet, contact your dealer. • AC power cord must be changed only at the qualified service shop. On heat buildup Although the unit heats up during operation, this is not a malfunction. If you continuously use this unit at a large volume, the cabinet temperature of the top, side and bottom rises considerably. To avoid burning yourself, do not touch the cabinet. On placement • Place the receiver in a location with adequate ventilation to prevent heat buildup and prolong the life of the receiver. • Do not place the receiver near heat sources, or in a place subject to direct sunlight, excessive dust or mechanical shock. • Do not place anything on top of the cabinet that might block the ventilation holes and cause malfunctions. • Use caution when placing the unit or speakers on surfaces that have been specially treated (with wax, oil, polish, etc.) as staining or discoloration of the surface may result. On operation Before connecting other components, be sure to turn off and unplug the receiver. If you encounter color irregularity on a nearby TV screen This speaker system is magnetically shielded to allow it to be installed near a TV set. However, color irregularities may still be observed on certain types of TV sets. If color irregularity is observed... Turn off the TV set once, then turn it on again after 15 to 30 minutes. If color irregularity is observed again... Place the speaker further away from the TV set. If howling occurs Reposition the speakers or turn down the volume on the receiver. On cleaning Clean the cabinet, panel and controls with a soft cloth slightly moistened with a mild detergent solution. Do not use any type of abrasive pad, scouring powder or solvent such as alcohol or benzine. If you have any question or problem concerning your receiver, please consult your nearest Sony dealer. Troubleshooting If you experience any of the following difficulties while using the receiver, use this troubleshooting guide to help you remedy the problem. Also, see "Checking the connections" on page 21 to verify that the connections are correct. Should any problem persist, consult your nearest Sony dealer. There is no sound or only a very low-level sound no matter which component is selected. • Check that the speakers and components are connected securely and correctly. • Check that both the receiver and all the components are turned on. • Check that the MASTER VOLUME control is not set at VOL MIN. • Press MUTING to cancel the muting function. • Check that the handphones are not connected. • The protective device on the receiver has been activated because of a short circuit ("PROTECT" flashes). Turn off the receiver, eliminate the short-circuit problem and turn on the power again. 50GB