Samsung HT-AS720 User Manual (ENGLISH) - Page 48

Before calling for service (cont'd) Symptom Check Remedy There is no sound from surround back speakers • Are the surround back speakers connected properly? • Is the S.BACK(Surround Back) selected to NONE in Speaker Setup? • Is Surround Mode set to EX/ES? • Refer to pages 12~13 to connect it properly. • Refer to pages 22~23 to select LARGE or SMALL. • Refer to page 34 to set Surround Mode to EX/ES. Can't select EX/ES mode. Can't select Dolby Pro Logic llx mode. • Is S.BACK(Surround Back) selected to NONE in Speaker Setup? • Is the input signal selected properly? • Refer to pages 11~12 to select LARGE or SMALL. • Use 7.1 channel external component. • Is the input signal selected properly? • Select 2 channel Dolby Digital, PCM, and Analog input signal. Can't select NEO:6 mode. • Is the input signal selected properly? • Use PCM and Analog input signal. There is no sound when playing a DTS encoded DVD. • Is Digital input selected? • Check whether the DVD player is properly connected and refer to page 24 to select the digital input. Product protection function Heat protection • The protection function will come on if the main unit or power transformer overheats. " " will appear in the display . This function will come on : - If speaker terminal is shorted - If speaker cable is shorted If there is no problem when you turn the unit on again after turning it off, PROTECTION mark will disappear on the display and the unit will work properly. • If PROTECTION appears on the display, check whether the speaker terminal is shorted and then turn on the unit 48