
ELECTRONIC KEYBOARDMODEL AK-900Elenco Electronics, Inc.Copyright © 1997 Elenco Electronics, Inc. Revised 2001 REV-A
ASSEMBLY INSTRUCTIONS1. Take a look at each of the parts bags and compare to the Parts List. Be sure that nothing was damagedduring shipping and handl
4.Locate the Black and White Piano Key Clips (Bag #2). Place the White Clips into the inside of the Top Case(as shown in Figure Ea). There are 3 small
-11-5.Locate the buttons (Bag #4). Attach the 4 Large Pink Button Contacts to the Large Pink Buttons as shown inFigure F. Now place the 4 Large Pink B
-12-6. Straighten the red LEDs (Light-Emitting-Diodes) on the Circuit Board so that they are standing straight up(they may have been bent to protect t
7. Place the Speaker (Bag #5) in its slot next to the Circuit Board and plug its connector into the Circuit Board.The tab on the speaker connector sho
9.Connect the Battery Wires (Bag #5) to the Circuit Board by plugging in the connector (as shown in Figure J). Thetabs on the connector should be faci
OPERATING INSTRUCTIONSTurn the unit on and adjust the speaker volume as needed (you may adjust the rhythm and master volumesseparately). You may use t
-16-QUIZ1. Sound waves travel through air just as electrical waves travel through __________.2. A microphone converts sound waves into __________ ___
-17-SCHEMATIC DIAGRAMOscillatorOSC1OSC2KEY1KEY2KEY36KEY37R0R1R2R3R4DirectKeyboardLogicMatrixControl KeyLogicTiming DividerTone1GeneratorTone2Generator
-18-IC 9037 Pin DescriptionInternalPin No. Pin Name I/OConnectionDescription1, 2 C3, C4 0 NMOS Matrix control key scanning outputs3 - 7 R4 - R0 I CMOS
PARTS LIST (WE SUPPLY)Bag # Qty Description Part #main 1 Circuit Board, fully assembled 517031main 1 Top Case 623113main 1 Bottom Case 6232031 2 Butt
-19-GLOSSARY OF TERMSAcoustics The science of designing rooms for best sound effects.Amplitude A measure of the strength of an electronic signal.Audio
Rhythm The pattern of regular beat that a song has.Schematic A graphical representation of an electronic circuit.Semitones The division of notes withi
Here are some other exciting projects from Elenco you can build.SOLDERLESS KITS35mm Camera Kit with training courseModel AK-540Now you can learn all a
DELUXE KITSStereo Cassette Kit with training courseModel AK-200Easy-to-build kit teaches you basic mechanical andelectronic circuits. You will have fu
Elenco Electronics, Inc.150 W. Carpenter AvenueWheeling, IL 60090(847) 541-3800http://www.elenco.come-mail: [email protected]
PARTS IDENTIFICATIONBAG 1 BAG 2 BAG 3 BAG 4 BAG 5Piano Cushion w/13 ContactsButton Cushionw/ 2 ContactsWhite PianoKey Clipw/ 7 KeysWhite PianoKey Clip
INTRODUCTIONThe AK-900 Electronic Keyboard is a electronic music system that you put together. It has 37 keys, 8 instrumentsounds (piano, flute, violi
Fundamentals of MusicWhat is Music? Musicis when vibrations (creating sound waves) occur in an orderly and controlled mannerforming a pattern with th
All traditional music instruments use this principle, with the instrument shapes and materials perfected throughthe years to produce many overtones fo
-6-Now consider the following two tones, which differ slightly in frequency:If they are played at the same time then their sound waves would be added
-7-Now observe this tone:The frequency is slowly increasing and decreasing in a regular pattern. This is an example of vibrato. If thefrequency is cha
All of the button selections are handled using ten control lines in a matrix. A matrix is similar to the rows andcolumns of a table. The matrix is as
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