CP-01
MANUAL
CLASSICAL PIANO
www.arexx.com
V20179
1
CLASSICAL PIANO CP-01
Product information:
This piano is an electronic miniature version of the well-known classical piano,
containing 49 keys and 23 preprogrammed melodies. The red keys are control
keys for the volume, tempo, style and for many other functions. The piano is
preprogrammed with 5 dierent tone-styles and provides a repeat and demo
key. The system allows playing preprogrammed melodies, but also allows
saving and playing your own melodies.
The piano is available as a pre-assembled model but also as a kit for customers who may be prepared to use soldering equipment. The pre-assembled
piano model is a wonderful business present, a marvellous toy for young and
old, for music-lovers and beginners. This booklet not only contains a step-bystep instruction manual, but also ample information concerning the world of
music.
Our product line involves several educational electronic and robotic systems,
for youngsters and adults. Have a look at our websites: www.arexx.com.
Specications:
Soundrange F ~ F (2 Octaves with a chromatic scale)
15 Volume steps
23 Registered melodies
5 Drum rhythms
4 Percussion sounds
4 Animal sounds
19 Tempo dierences
Record and play function
o
Power supply 4.5 Volt (3 pcs AA batteries)
© CLASSICAL PIANO is a trademark of AREXX, The Netherlands en DAGU, China.
© AREXX en DAGU are registered trademarks
© All rights reserved.
Reprinting any of this instruction manual without our permission is prohibited.
The specifications, form, and contents of this product are subject to change without prior notice.
We are not liable for disadvantage or damage caused by improper use or assembly.
2
Contents
1. Product information 2
2. Partlist 4
3. Necessary tools 5
3.1 Soldering techniques 5
4. Electronic part assembly 6
4.1 Soldering of the parts 6
5. Final assembly 7
6. Function test 10
7. Description of the keyboard functions 11
8. What is a synthesizer 13
9. Circuit diagram 16
* When you open the plastic bags of the parts the return right will be disposed
* Read before you start assembly the complete instruction manual
* Be careful with tools and always keep it away from little children!
* Keep this product out of reach of children and do not build this kit when children are in
the neighbourhood, the tools and parts are dangerous for children
* Check the polarity of the batteries
* Keep the batteries dry, when the PIANO gets wet remove the batteries and let the
PIANO dry for some time
* Remove the batteries when you are not using the PIANO for a longer period
3
2. PARTLIST
O Piano arm 1 pc.
O Feet 4 pcs. each
O PCB 1 pc.
O Speaker 1 pc.
O Resistor 14 pcs.
O Wire
Red 1 pc.
Black 1 pc.
O Roundhead
Screw M2 x 5
13 pcs.
O Flathead-
screw
M3 x 8 2 pcs.
O Screw long
M3 4 pcs.
O Battery holder
1 pc.
O ELCO 3 pcs.
O Nut M2
10 pcs.
O Nut M3
6 pcs.
O Piano cover 1 pc.
O Condensator
6 pcs.
O LED 1 pc.
Push switch
O On/O
Switch
1 pc.
Tube
Sound chip
O AREXX IC 1 pc.
LM386
O Opamp IC 1 pc.
O IC Socket 2 Pcs.
O White 15 pcs.
O Black 10 pcs.
O Red 14 pcs.
O Blue 10 pcs.
O Rubber tube
5 pcs.
Feet
O O-Ring or
Distance holder
4
O Hinge
3 pcs.
O Rivet 3 pcs.
O Mounting for
speaker
3 pcs.
CAUTION
Soldering tools are only necesarry for the soldering required KIT
PASTE
• Read this manual carefully in advance to fully understand how to assemble this product.
• Children below 14 may only assemble this product with the help of adults.
• Be careful with the tools. Especially be careful with sharp tools such as nippers or cutter
knife to prevent any injuries or accidents.
• Never assemble the kit when a younger child is around. The child might touch sharp tools or
swallow parts or a vinyl bag.
• Be careful with sharp edges of parts.
* Do not mix old and new or recharchable and non rechargeble batteries.
• Take out the batteries when you do not use the Piano for more than a week
• The specication, shape and size of the product are be subject to change without prior notice.
Necessary tools
3.
Soldering iron
(15 to 30W)
Long-nose plier
Soldering iron
stand
Diagonal cutter
Solder
0,8- bis 1mm
Screwdriver set
3.1 Soldering techniques:
Only use leadfree ROSIN CORE solder!
Never use any liquid- or paste ux!
Correct position for professional soldering
Only add a little solder each time
Hold the iron like a pencil
1. Preheat the solder area which
must be soldered AND the component wire with the tip of the iron.
Do NOT overheat it!
4. Take away the soldering iron
and DO NOT MOVE the
component or PCB!
2. Add some solder to the
soldering area and
component wre but NOT
TO MUCH!
5. Cut away the long component
wire just above the soldering spot.
3. Remove the solder and let
the hot liquid solder ow.
The END RESULT is a nice and
shinny soldering spot which is
attached to the PCB copper and
component wire.
Necessary Batteries:
AA Batteries, 3 Pieces
(not included)
Troubleshoot soldering mistakes:
Cold PCB
Solder is attached to
comonent wire but not to
the PCB copper
Not enough solder
Solder did not ow
Solder bridge
Two seperate solder spots are
connected to each other
PERFECT SOLDERING
The soldering surface
looks nice and shinny
5
Loading...