172a. Start-Up1. Power On/OffPress the ‘POWER’ rocker switch (R5) at the rear of the CD-77 to switch mains power ON to the CD-77.To switch the mains power OFF, press again and release. Always WAIT at least 20 seconds before switchingon again. This is to enable the OptiMains® circuit to shutdown properly.The display will light up to indicate the unit is switched on and ready for use. This should take just under 1 minuteas the OptiMains® circuit is verifying the incoming mains and the CD processor is warming up.The display should flash the message:Optimising Supply Voltageit will then change to:Warming Up Please WaitThe display will then countdown the remaining warm-up time.Once the OptiMains®circuitry has completed its initiation process, the CD-77 is ready for operation.Once poweredOFF: always wait20 secondsbefore switchingon again