JBL Commercial JBL CSMA 280 사용자 매뉴얼

POSSIBLE REASON:  The mixer-amplifier is not plugged into the power receptacle

POSSIBLE REASON:  The input signal is not present or at a very low level.

POSSIBLE REASON:  The Master Volume control is turned down.

POSSIBLE REASON:  A CSR-V is connected and turned down.

POSSIBLE REASON:  Mixer channel inputs are turned down.

POSSIBLE REASON:  The Ch 1 Priority switch is closed, muting all except Ch 1 input. 

POSSIBLE REASON:  The Hi-Z switch is OFF while using the 70V or 100V outputs.

POSSIBLE REASON:  The power switch is OFF.  (Note that while plugged in, the  
                                     amplifier will be in standby mode and the power ring will be    
                                    green until the power switch is activated  
                                    and the power ring will turn blue.)

POSSIBLE REASON:  Input signal level is too high.  Please turn down the input level  
 

 

        controls.  Note that the mixer-amplifier should not be operated  

 

 

        at a level that allows the clip indicator (red ring around the  

 

                      Master Volume) to be constantly ON.

POSSIBLE REASON:  Master Volume is too high.

POSSIBLE REASON:   MIC/LINE switch is in MIC position when using a  
 

  

         line level source.