Yamaha 640 Owner's Manual - Page 12
Setting Up, Power supply connections, Connecting a footswitch - pa
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Setting Up This section contains information about setting up your PSR-740/640 and preparing to play. Be sure to go through this section carefully before turning the power on. Power supply connections 1 Make sure that the STANDBY/ON switch of the PSR-740/640 is set to STANDBY. 2 Connect the optional AC adaptor (PA-6 or other adaptor specifically recommended by Yamaha) to the power supply jack. 3 Plug the AC adaptor into an AC outlet. When turning the power OFF, simply reverse the procedure. CAUTION • Never interrupt the power supply (e.g. unplug the AC adaptor) during any PSR740/640 record operation! Doing so can result in a loss of data. WARNING • Use ONLY a Yamaha PA-6 AC Power Adaptor (or other adaptor specifically recommended by Yamaha) to power your instrument from the AC mains. The use of other adaptors may result in irreparable damage to both the adaptor and the PSR-740/ 640. • Unplug the AC Power Adaptor when not using the PSR-740/640, or during electrical storms. Connecting a footswitch s FOOT SWITCH jack The sustain function lets you produce a natural sustain as you play by pressing a footswitch. Plug an optional Yamaha FC4 or FC5 footswitch into this jack and use it to switch sustain on and off. The footswitch connected to this jack can also be set to replicate the functions of some panel buttons, doing things like starting and stopping accompaniment (page 137). s FOOT VOLUME jack Connecting an optional Yamaha FC7 foot controller lets you use your foot to change the volume as you play the PSR-740/640 (expression function). The foot controller connected to this jack can also be set to replicate the functions of the main volume controls, such as accompaniment or song volume (page 138). • Recorded data is retained in memory even when the STANDBY switch is turned off if an AC adaptor is connected. For details, see page 159. • Be sure that you do not press the footswitch while turning the power on. If you do, the ON/OFF status of the footswitch will be reversed. • When the sustain or sostenuto pedal functions are being used (page 137), some voices may sound continuously or have a long decay after the notes have been released while the pedal is held. 12 10