Vadim,
Yes those are bascially arpeggiated phrases as well. They however lack the features one would find within a true "arpeggiator feature" found on the synths.

The E403 is now the exception in my opinion. It's the only PSR that I know of that at least has some basic ones. The only other (Yamaha) arranger I can remember having these were the Yamaha DJX series, and they too were very limited.

Hell the Casio MZ-2000 even had a few--although they too were limited, but Casio did it with their flagship arranger years ago.

Squeak
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GEAR: Yamaha MOXF-6, Casio MZX-500, Roland Juno-Di, M-Audio Venom, Roland RS-70, Yamaha PSR S700, M-Audio Axiom Pro-61 (Midi Controller). SOFTWARE: Mixcraft-7, PowerTracks Pro Audio 2013, Beat Thang Virtual, Dimension Le.