Mesa/Boogie DC3 - Manual (Page 10)

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This toggle calls up one channel or the other and can take the place of the Channel Select footswitch when there isn’t one handy.
Perfect for set breaks... this toggle switch also serves an even more important purpose. In the Standby position the tubes are at idle
so that during power up they may warm up before being put to use. Before Power is switched on make sure the STANDBY switch
is in the Standby position. Wait at least 30 seconds and then flip the STANDBY switch to the
“ON” position. This prevents tube problems and increases their toneful life substantially.
This switch delivers the A.C. power to the DC-3. Make sure the unit is grounded (All three terminals of the A.C. cord must be
connected whenever possible to avoid injury to the user as well as to the unit) and that the proper voltage is present. Follow the cold
start procedure described in the above section ON / STANDBY when powering up your DC-3.
TOGGLE SWITCHES
RHYTHM / LEAD:
STANDBY POWER LEAD
ON ON RHYTHM
D UAL C ALIBER DC-3
ON / STANDBY:
STANDBY POWER LEAD
ON ON RHYTHM
D UAL C ALIBER DC-3
POWER:
STANDBY POWER LEAD
ON ON RHYTHM
D UAL C ALIBER DC-3
REST AREA