Panasonic SU-C550 Operating Instructions - Page 42

Troubleshooting Before requesting service, make the following checks. If you are uncertain about some of the check points, or if the solutions indicated in the following guide does not resolve the issue, then consult your dealer for instructions. Heat buildup of this unit This unit becomes warm when used for a long time. This is not a malfunction. Do you have the latest firmware installed? Panasonic is constantly improving the unit's firmware to ensure that our customers are enjoying the latest technology. ( 40) To return all settings to the factory defaults When the following situations occur, reset the memory: • There is no response when buttons are pressed. • You want to clear and reset the memory contents. 1 Press [SETUP]. 2 Press [ ], [ ] repeatedly to select "Initialization" and then press [OK]. 3 Press [ ], [ ] to select "Yes" and then press [OK]. • All the settings are set back to the factory defaults. It is necessary to set the memory items again. 4 Press [ ], [ ] to select "Yes" and then press [OK] again. 42 General The unit does not work. Operations are not done properly. • One of the unit's safety devices may have been activated. Press [ ] on the unit to switch the unit to standby. • If the unit does not switch to standby, press [ ] on the unit for at least 5 seconds. The unit is forcibly switched to standby. Alternatively, disconnect the AC mains lead, wait for at least 3 minutes, then reconnect it. Press [ ] on the unit to switch on. If the unit still cannot be operated, consult the dealer. A "humming" sound can be heard during playback. • An AC mains lead or fluorescent light is near the cables. Keep other appliances and cords away from the cables of this unit. • A strong magnetic field near a TV or other device may adversely affect the audio quality. Keep this unit away from such devices. • The speakers may output noise when a device nearby is emitting powerful radio waves, such as when a mobile phone is on a call. No sound. • Check the volume of this unit. • Check connections to speakers and other equipment. After checking the connections, measure the output signal of the amplifier. ( 41) • Check to see if the correct input source is selected. • Insert the plugs of the cables to be connected all the way in. • Playback of multi-channel content is not supported. • The digital audio input terminals of this unit can only detect linear PCM signals. For details, refer to the operating instructions of the device. Playback does not start. • Depending on your environment or connected devices, it may take some time. • Check to see if the format of the file is supported. About supported format, refer to "File format". ( 53)