236 Access All Areas for your act, so you need to act swiftly and efficiently. All cables, stands and instruments should be checked to make sure that they are safe and secure. Don't leave any- thing to chance. If a mic stand looks like it's going to droop down during the show then change it now. Next you need to do a quick line check, before the show starts Line checking The line check is the way to see if everything is still work- ing from the stage down to the mixer (so, in theory, in the PA as well) but without actually feeding it into the PA system. This is done by playing each instrument or talking into/tapping each mic and checking that the signal is com- ing into the mixer. You need someone on stage and some- one at the mixer to do this. Basically you leave the mute buttons on and check the signal by pressing the PFL but- ton on the channel to be checked. If you like, listen on headphones while someone plays, talks or taps the mic in question. As an example if the lead guitar is on channel 16 put 16 into PFL mode by pressing the PFL button down