Pioneer SC-91 Owner's Manual - Page 102

13 FAQ Symptom No sound from surround back speakers. No sound from front wide speakers. No sound from subwoofer. No sound from one speaker. No digital sound is output. Remedy Check that the surround back speakers are set to LARGE or SMALL, and the surround speakers are not set to NO (see Speaker Setting on page 94) . Check the speaker connections (see Connecting the speakers on page 23) . If only one surround back speaker is connected, make sure it's connected to the left channel speaker terminal. When Speaker System is set to 7.2ch/5.2.2ch and SP: TMd ON is selected with the OUT P. button, no sound will be output from the surround back speakers. Select SP: SB ON or SP: SB/TMd ON (see Switching the speaker terminals on page 75 ). When Speaker System is set to 7.2ch SB/FW and SP: FW ON is selected with the OUT P. button, no sound will be output from the surround back speakers. Select SP: SB ON or SP: SB/FW ON (see Switching the speaker terminals on page 75) . When Dolby Surround is selected, audio is not output from the surround back speaker when it is the only one connected (set). Check that the front wide speakers are set to LARGE or SMALL, and the surround speakers are not set to NO (see Speaker Setting on page 94 ). Check the speaker connections (see Connecting the speakers on page 23) . When Speaker System is set to 7.2ch SB/FW and SP: SB ON is selected with the OUT P. button, no sound will be output from the front wide speakers. Select SP: FW ON or SP: SB/FW ON (see Switching the speaker terminals on page 75) . When Speaker System is set to 7.2ch SB/FW and Dolby Surround is selected, audio is not output from the front wide speakers. Check that the subwoofer is connected properly, switched on and the volume turned up. If your subwoofer has a sleep function, make sure it is switched off. Make sure that the Subwoofer setting is YES or PLUS (see Speaker Setting on page 94 ). The crossover frequency may be set too low; try setting it higher to match the characteristics of your other speakers (see Speaker Setting on page 94 ). If there is very little low frequency information in the source material, change your speaker settings to Front: SMALL / Subwoofer: YES, or Front: LARGE / Subwoofer: PLUS (see Speaker Setting on page 94 ). Check that the LFE channel is not set to OFF, or to a very quiet setting (see Setting the Audio options on page 73) . Check the speaker level settings (see Channel Level on page 95 ). Check the speaker connection (see Connecting the speakers on page 23 ). Check the speaker level settings (see Channel Level on page 95 ). Check that the speaker hasn't been set to NO (see Speaker Setting on page 94) . The channel may not be recorded in the source. By using one of the advanced effect listening modes, you may be able to create the missing channel (see Enjoying various types of playback using the listening modes on page 59) . Make sure that the digital input is assigned correctly for the input jack the component is connected to (see The Input Setup menu on page 48) . Check the digital output settings on the source component. Other audio problems Symptom Speaker switching sound (clicking sound) is heard from receiver during playback. Broadcast stations cannot be selected automatically, or there is considerable noise in radio broadcasts. Remedy Since ECO MODE 1 and ECO MODE 2 reduce the power consumption, the speakers are switched in function of the number of input channels. Because of this, a speaker switching sound (clicking sound) may be produced when the number of input channels is switched. If this bothers you, switch to a different listening mode. Depending on the listening mode, the top middle and surround back speakers may switch automatically in function of changes in the input audio. A speaker switching sound (clicking sound) will be heard from the receiver at this time. If this sound bothers you, we recommend to change the speaker terminal option (see Switching the speaker terminals on page 75 ). Fully extend the FM wire antenna, adjust the position for best reception and secure to a wall, etc. Use an outdoor antenna for better reception (see page 33 ). Adjust the position and direction of the AM antenna. Noise may be caused by interference from other equipment, such as a fluorescent light, motor, etc. Switch off or move the other equipment, or move the AM antenna. Subwoofer output is very low. To route more signal to the subwoofer, set it to PLUS or set the front speakers to SMALL (see Speaker Setting on page 94 ). Everything seems to be set up cor- The speakers may be out of phase. Check that the positive/negative speaker terminals on rectly, but the playback sound is odd. the receiver are matched with the corresponding terminals on the speakers (see Con- necting the speakers on page 23 ). The Phase Control feature doesn't seem to have an audible effect. If applicable, check that the lowpass filter switch on your subwoofer is off, or the lowpass cutoff is set to the highest frequency setting. If there is a PHASE setting on your subwoofer, set it to 0º (or depending on the subwoofer, the setting where you think it has the best overall effect on the sound). Make sure the speaker distance setting is correct for all speakers (see Speaker Distance on page 95 ). Can't select some Input functions by the INPUT SELECTOR on the front panel or the ALL button on the remote control. Check the Input Skip settings in the Input Setup menu (see The Input Setup menu on page 48 ). Check the HDMI Input assignment in the Input Setup menu then try OFF (see The Input Setup menu on page 48 ). There seems to be a time lag See Automatically conducting optimum sound tuning (Full Auto MCACC) on page 47 between the speakers and the output to set up your system again using MCACC (this will automatically compensate for a delay of the subwoofer. in the subwoofer output). The maximum volume available (shown in the front panel display) is lower than the +12dB maximum. Check that the Volume Limit is set to OFF (see Volume Setup on page 96) . The channel level setting may be over 0.0dB. Certain listening modes or HOME MENU items cannot be selected. Some functions cannot be selected, depending on the input signal and listening mode. The volume level drops automatically. The temperature within the unit has exceeded the allowable value. Try moving the unit for better ventilation (see Installing the receiver on page 11 ). Volume seems different when input Set the Channel Level setting to ALL, then adjust the volume of the respective input is switched. sources (see Input Volume Absorber on page 76 ). When HDZONE is ON, multi-channel audio sources are not output in the main zone. When HDZONE is selected in Speaker System and also the same HDMI input is selected for both the main zone and HDZONE, 2-channel PCM audio sources are output from the main zone as well. To output multi-channel audio sources, set HDZONE to OFF or change the HDZONE input. 102