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Casio CTK-100 manual

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Table of contents for the manual

  • Page 1

    (with price) CTK-100 ELECTRONIC KEYBOARD R CTK-100 INDEX[...]

  • Page 2

    CONTENTS SPECIFICATIONS .......................................................................................................... 1 BLOCK DIAGRAM ......................................................................................................... 2 CIRCUIT DESCRIPTION ...........................................................................[...]

  • Page 3

    — 1 — SPECIFICA TIONS Electrical Current Drain with 9V DC: No Sound Output 47 mA ± 20% Maximum Volume 413 mA ± 20% with keys C2, D2, E2 and F2 pressed in Car-Horn tone, Volume; Maximum Output Level (Vrms with 8 Ω load each channel): 76 mV ± 20% with key G2 pressed in Street Organ tone Speaker Input Level: 935 mV ± 20% with key G2 pressed [...]

  • Page 4

    — 2 — BLOCK DIAGRAM KO0~KO9 KI0~KI7 Keyboard Switches Oscillator VDD +5V Power supply circuit VC +9V Amplifier Speakers Output Jack LA4598 Filter T3/T4 CPU MSM6387-13 Main Volume T2[...]

  • Page 5

    — 3 — 0 I K1 I K2 I K3 I K4 I K5 I K6 I K7 I K 0 O K ) 1 C K ( 01 2 C2 # C2 D2 # D2 E2 F 1 O K ) 2 C K ( 23 2 # F2 G2 # G2 A2 # A2 B 2 O K ) 3 C K ( 45 3 C3 # C3 D3 # D3 E3 F 3 O K ) 4 C K ( 67 3 # F3 G3 # G3 A3 # A3 B 4 O K ) 5 C K ( 89 4 C4 # C4 D4 # D4 E4 F 5 O K ) 6 C K ( e n o Tm h t y h R4 # F4 G4 # G4 A4 # A4 B 6 O K ) 7 C K ( o p m e T [...]

  • Page 6

    — 4 — CPU (MSM6387-13) The CPU contains a sound data ROM and a DAC (Digital to Analog Convertor), and it provides a sound waveform in accordance with the pressed key and the selected tone. The following table shows the pin functions of the CPU. Filter Block Since the sound signal from the CPU is a stepped waveform, the filter block is added to [...]

  • Page 7

    — 5 — Power Amplifier (LA4598) The power amplifier is a 2-channel power amplifier with a standby switch. The following table shows the pin functions of the power amplifier. TROUBLESHOOTING Nature of Trouble Faulty Block Checkpoint No power Power Supply Circuit Emitter of T2 should provide +5.5 V. Base of T2 should receive +6 V. Power Jack Jack [...]

  • Page 8

    — 6 — IC AND TRANSIST OR LEAD IDENTIFICA TION T3, T4: 2SC1740SQ T2: 2SD2008Q,R LA4598 30 29 28 24 27 26 25 23 22 21 20 19 18 17 16 TEST2 TEST1 RESET GND AVDD OUT AGND COSI COSO VDD KI0 KI1 KI2 KI3 KI4 1 2 3 7 4 5 6 8 9 10 11 12 13 14 15 KO0 KO1 KO2 KO6 KO3 KO4 KO5 KO7 KO8 KO9 KO10 KO11 KI7 KI6 KI5 B C E B C E Power GND Ch1 B.S. Ch1 OUT VCC Ch1 [...]

  • Page 9

    — 7 — SCHEMA TIC DIAGRAMS Keyboard PCBs M496K-KY1M, KY2M[...]

  • Page 10

    — 8 — PCB VIEW and MAJOR W A VEFORMS 56 7 1 4 3 2[...]

  • Page 11

    — 9 — Main PCB M4502-MA1M 1 4 0.0 0.3 0.0 0.0 0.0 5.1 4.2 2.3 0.0 0.0 2.4 4.6 5.0 0.0 0.0 0.3 0.0 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 2 3 4.6 2.4 1.7 1 1.4 4.6 2.0 1.2 4.3 7.5 0.0 8.4 0.0 8.4 0.0 1.2 8.7 4.3 7.5 0.0 7 6 5 5.5 6.1 8.7[...]

  • Page 12

    — 10 — EXPLODED VIEW[...]

  • Page 13

    P ARTS LIST CTK-100 Notes: 1. Prices and specifications are subject to change with- out prior notice. 2 . As for spare parts order and supply , refer to the "GUIDEBOOK for Spare parts Supply", published separately . 3. The numbers in item column correspond to the same numbers in drawing.[...]

  • Page 14

    FOB Japan N Item Code No. Parts Name Specification Q M N.R.Yen R * Unit Price PCB Ass'y M5505-MA1M 2011 296 1 LS I MSM6387-1 3 1 1 580 A F 2114 289 1 IC LA459 8 1 1 140 A B 2220 138 7 Transistor 2SC1740SQ-TP- T 2 10 13 A A 2253 035 7 Transistor 2SD2008Q,R-T105- T 1 10 30 A A 2310 784 8 Zener diode RD4.3ESB2-T1- T 1 20 12 A A 2360 003 5 Zener d[...]

  • Page 15

    FOB Japan N Item Code No. Parts Name Specification Q M N.R.Yen R * Unit Price PCB Ass'y Keyboard 2301 010 1 Diode 1S2473-T-77- T 4 9 20 8 C A JX 3725 203 0 PC joiner MASK X JSF50-9-14 0 1 10 34 C A JA 3725 240 1 PC joiner M283 A JSF50-15-240 M 1 5 91 C B 4317 161 0 Blank PCB M496K-KY1 M M110799- 1 1 1 120 C B 4317 162 1 Blank PCB M496K-KY2 M M[...]

  • Page 16

    MA0300941A[...]