User manual
Ch-21
This electronic keyboard is built in demo 
library with 50 demos.Built-in demos can be 
used to play and auto accompaniment 
performance.You can select a demo, 
deleting its melody, and adopt learning 
function and follow and play this melody on 
the keyboard.Fingerings of Melody and 
accompaniment shall be shown on 
electronic keyboard's display screen. 
Use Demo Library
Ch-22
1  Find out the demo you want to play in the 
 list of the library and record its number. 
2  Press “DEMO“ button to start playing the 
 demo.
3  Input track code directly with “NUMERAL 
 CODING" buttons and the display screen 
 shows demo's number and name. 
 ● You can also select previous or next 
 demo by turning the dial . 
4  Press “START/STOP” button to stop 
 playing the demo. 
 ● The selected demo will not stop playing 
 until you stop it.
Play demo of the library
1  Lesson A learn in view of timing of demo 
without requirement of pitch' s correctness.
 Demo plays the accompaniment part and 
 display thematic voice on LCD staff and 
keyboard, and when the user plays theme, 
 the keyboard produces respective key 
 sound. 
2  Lesson B
learn in view of thematic pitch 
 of the demo.Play respective sound 
 correctly and the demo will be continued 
 playing, otherwise the demo will be 
 standby. 
3  Lesson C learn synthetically in view of 
 timing and theme of the demo.
 Demo plays accompaniment part and 
 displays thematic sound on LCD staff and 
 keyboard. 
Course learning
Demo Library
Demo Library
Notice !
● Every time you turn on electronic 
 keyboard power
 the default demo. 
Lesson Mode
Lesson mode will guide you to learn playing 
songs through the following three definite 
steps. 
1  Press "DEMO" button
 and then press 
 "START/STOP" button quickly to start 
 standby mode. 
2  Press "LESSON" button to select 
 Lesson A
Lesson B  Lesson C or exit 
 learning function circularly, and the 
display screen will show the corresponding 
 learning signs in accordance with your 
 different selection.Press "START/STOP" 
 button to start or stop learning.
3  
You could select respective or simultaneous
learning of both hands through 
"
L/R PART
"
,
 and "CHORD DICTIONARY" buttons. 
 When you Press "L/R PART" to select 
 left-hand learning, the sign of left hand is 
 showed; Press "CHORD DICTIONARY" 
 button to select right-hand learning, the 
 sign of right-hand mode is showed; When 
 you press "L/R PART" and "CHORD 
 DICTIONARY" buttons simultaneously
 it means simultaneous learning of left and 
 right hands, and the sign of left and right 
 hand will be simultaneous displayed on 
 the LCD. If both hands are not selected, 
 the system will start right-hand learning 
 automatically for the convenience of user 
 operation.
 ● When you choose right-hand learning 
 function, right-hand theme will be hidden, 
 and when you select left-hand learning 
 function
left-hand melody or chord 
 change of left-hand accompaniment will 
 be hidden.When you Select left-and-right-
 hand learning function, the melody of 
 both hands will be hidden simultaneously.
 ● After you stop learning,the current demo 
 will be played again automatically and the 
 former lesson mode will be kept.
Use this function
CHORD 
DICTIONARY
LESSON
NUMBERICAL CODING
DEMO
START/STOP
L/R PART










