Casio PK-5 Service Manual
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Casio PK-5 Service Manual

Casio PK-5 Service Manual

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PK-5
INDEX
ELECTRIONIC KEYBOARD

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Summary of Contents for Casio PK-5

  • Page 1 (without price) PK-5 INDEX ELECTRIONIC KEYBOARD...

  • Page 2: Table Of Contents

    CONTENTS Specifications ......... . 1 Block Diagram .

  • Page 3: Specifications

    SPECIFICATIONS General Number of Keys: Polyphonic: 2-note Preset Tones: Auto-Rhythms: Rock 1~2, 16 Beat 1~2, Disco 1~3, Pops 1~3, Slow Rock, Swing March, Reggae, Tango, Samba, Bossa Nova, Beguine, Waltz Accompaniment Patterns: Rock, Pops, Funk, Slow Rock, Latin, Jungle, Orient, Bagpiper, Fanfare, Child's Play, Classical, Computer, New Age Demonstration Tune: Classical Medley...

  • Page 4: Block Diagram

    BLOCK DIAGRAM KO0~KO6 Amplifier MSM6387-03 KI0~KI7 AN8053N LSI1 Speaker Keyboard Switches Oscillator Nomenclature of Keys F#3 G#3 A#3 C#4 D#4 F#4 G#4 A#4 C#5 D#5 F#5 G#5 A#5 G3 A3 B3 C4 D4 E4 B4 C5 D5 — 2 —...

  • Page 5: Circuit Description

    CIRCUIT DESCRIPTION Key Matrix Tempo Volume Tone 0 Tone 1 Tone 2 Tone 3 Tone 4 Select Tempo Volume Tone 5 Tone 6 Tone 7 Tone 8 Tone 9 Stop Down Down Demo CPU (LSI1: MSM6387-03) Containing a sound data ROM and a DAC (Digital to Analog Convertor), the CPU provides sound wave- form in accordance with the pressed key and the selected tone.

  • Page 6: Troubleshooting

    Amplifier/Voltage Regulator (IC1: AN8053N) Consisting of an amplifier and a voltage regulator, AN8053N amplifies the sound signal from the CPU and also provides the CPU +5V source. The following figure shows the internal block diagram of IC1. CONT VREG NC PRE GND 5V REG POWER SP AMP...

  • Page 7: Pcb View And Major Waveforms

    PCB VIEW and MAJOR WAVEFORMS M3205-MA1M PCB Clock pulse COSO Key scan signal KO0 Sound output Power Amp. output MSM6387-03 Pin 9 MSM6387-03 Pin 30 MSM6387-03 Pin 5 AN8053N Pin 1 Tone : Piano Tone : Piano Key : G4 Key : G4 Key scan signal KO1 Volume : Max.

  • Page 8: Schematic Diagrams

    SCHEMATIC DIAGRAM M3210-MA1M PCB — 6 —...

  • Page 9: Ic Lead Identification

    IC LEAD IDENTIFICATION LSI1: MSM6387-03 IC1: AN8053N — 7 —...

  • Page 10: Exploded Veiw

    EXPLODED VIEW — 8 —...

  • Page 11: Parts List

    PARTS LIST PK-5 Notes: Prices and specifications are subject to change with- out prior notice. As for spare parts order and supply, refer to the "GUIDEBOOK for Spare parts Supply", published seperately. The numbers in item column correspond to the same...
  • Page 12 FOB Japan Item Code No. Parts Name Specification N.R.Yen Unit Price Electrical Parts C1/2 2807 1531 Electrolytic capacitor 10RE3-470-T2-T 2 20 C3/4 2807 6392 Electrolytic capacitor 10RE3-22-T2-T 2 20 2813 1771 Semiconductive capacitor DD405SR393K16-T 1 10 2807 6378 Electrolytic capacitor 50RE3-1-T2-T 1 20 2801 9100 Electrolytic capacitor...
  • Page 13 8-11-10, Nishi-Shinjuku Shinjuku-ku, Tokyo 160, Japan May, 1994 Telephone: 03-3347-4926...

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