Panasonic SAHT730 Technical Guide - Page 22

III "No Audio" Problems A loss of audio in one or more channels can either be caused by a break in the signal flow or a line being muted. Use the following two diagrams to see the audio signal flow, the mute locations, and the location of accessible capacitors in the signal path for signal tracing. How to trace down no audio (one or more channels) Once an audio tone is generated (A) it can be followed through the unit (B). A- Generating test audio to the speakers: Refer to figure 15. Notice: When a headphone is plugged in, all the audio to the subwoofer amplifier is muted so there is no sound from any speaker (only to the headphones). 1. TV, VCR, and FM - These stereo audio inputs produce audio from the front and subwoofer speakers only unless the remote's "Super Srnd" button is pressed. Then "S.SRND" appears on the front panel and all 6 channels output audio. 2. DVD - When playing a DVD movie with DTS or Dolby Digital ("SFC" will light in the display and) all 6-channels will work. Older stereo-only movies (no SFC light) will only deliver 2-channel stereo sound. When the remote's "Super Srnd" is pressed, the front panel display shows "Error". SA-HT730 / SAHT930 22