Yamaha PSR1000 Quick Steps page 18

XI. Recording to PSR1000/2000 Sequencer from External MIDI
Source
The on-board sequencer of the PSR1000/2000 can be used to record MIDI data
from external sources, such as MIDI bass pedals, keyboards and hardware or
computer-based sequencers. This is done by assigning the desired MIDI Receive
Channels to 'Keyboard' mode.
1) Press the [FUNCTION] button.
2) Press the [H] 'MIDI' button.
3) Use the [BACK] and [NEXT] buttons to display the 'PRESET' page in the
screen.
4) Press the [A] 'All Parts' button.
5) Press the [8^] 'EDIT' button.
6) Use the [BACK] and [NEXT] buttons to display the 'RECEIVE' page in the
screen.
7) Use the [A] and [B] buttons to select a desired MIDI Channel.
8) Use the '2' [^] and '2' [v] buttons to select 'KEYBOARD' for that Channel.
Any MIDI Channels with 'KEYBOARD' selected will receive incoming MIDI data
from an external source, which can be recorded onto a corresponding Track in
the PSR1000/2000 'Song Creator'.
Owner's Manual, p. 147