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Casio CTK-630 manual

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Table of contents for the manual

  • Page 1

    ELECTRONIC KEYBOARD (with price) CTK-630 CONTENTS Page Specifications ................................................................................................................................... 2 Block Diagram .................................................................................................................................. 3[...]

  • Page 2

    — 2 — ELECTRICAL Nominal Limit Current drain with 9 V DC: No sound output 220 mA 220 mA ± 30 % Maximum volume 900 mA 900 mA ± 30 % with white keys C4 to G5 pressed in Recorder tone Volume: maximum, Touch response: maximum Layer: On, Reberv: Off Phone output level (Vrms with 8 Ω load each channel): with key C4 pressed in Recorder tone 125 mV[...]

  • Page 3

    — 3 — BLOCK DIAGRAM KC0 ~ KC7 FI0 ~ FI10 SI0 ~ SI19 Working Storage RAM (64K-bit) LSI103 SRM2264LM90 MIDI EA0 ~ EA12 EIO0 ~ EIO7 Sound Source ROM (16M-bit) LSI104 MX23C1610MC- 12CA20 LRCK SO BCK D/A Converter IC102 UPD6379GR Filter Q108, Q109 Q119, Q120 Main Volume Power Amplifier IC101 LA4598 LED driver IC103 BA612 Keyboard MA0 ~ MA19 Power Su[...]

  • Page 4

    — 4 — KC0 KC1 KC2 KC3 KC4 KC5 KC6 KC7 FI0 C2 (1) C#2 (1) D2 (1) D#2 (1) E2 (1) F2 (1) F#2 (1) G2 (1) SI0 C2 (2) C#2 (2) D2 (2) D#2 (2) E2 (2) F2 (2) F#2 (2) G2 (2) FI1 G#2 (1) A2 (1) A#2 (1) B2 (1) C3 (1) C#3 (1) D3 (1) D#3 (1) SI1 G#2 (2) A2 (2) A#2 (2) B2 (2) C3 (2) C#3 (2) D3 (2) D#3 (2) FI2 E3 (1) F3 (1) F#3 (1) G3 (1) G#3 (1) A3 (1) A#3 (1[...]

  • Page 5

    — 5 — Key Second contact (2) First contact (1) FI KC SI Reset IC IC105 RE5VA35AA DSP LSI101 HG51B227FB VDD Reset signal VDD Battery set RESET VDD POWER From power switch NMI APO PLE CPU LSI105 UPD912GF-3BA SCKO Note: Each key has two contacts, the first conatct (1) and second contact (2). POWER SUPPLY CIRCUIT The power supply circuit generates [...]

  • Page 6

    — 6 — CPU (LSI105: UPD912GF-3BA) The 16-bit CPU contains a 1k-byte RAM, three 8-bit I/O ports, two timers, a keycontroller and serial interfaces. The CPU detects key velocity by counting the time between first-key input signal FI and second-key SI from the keyboard. The CPU reads sound data and velocity data from the sound source ROM in accorda[...]

  • Page 7

    — 7 — DIGITAL SIGNAL PROCESSOR (LSI101: HG51B227FB) The DSP receives 16-bit serial sound data output from the CPU and adds the selected effect to the sound data using the effect RAM. Then the DSP provides the sound data to the DAC. The DSP contains two I/O ports, which controls LEDs. The following table shows the pin functions of LSI101. Pin No[...]

  • Page 8

    — 8 — AVDD 470 AG AG 1K 1K 1K C333(H) C332(H) 2SC1740SQ 1K AG AG 2SC1740SQ AVDD 47K 22K 50V0.22 µ 10V22 µ From the DAC To main volume Synch signal Data Word clock Bit clock Data Word clock Bit clock DSP LSI101 HG51B227FB DAC IC102 UPD6379GR CPU LSI105 UPD912GF-3BA L OUT R OUT SI LRCK CLK SO WCKO SCK1 SO LRCK BCK SINC SI WCKI BCKI DAC (IC102: [...]

  • Page 9

    — 9 — LG DSP LSI101 HG51B227FB LVDD PB0 ~ PB4 IC103 BA612 LED Driver LC0 ~LC4 Q110 ~ Q117 LED Driver PA0 ~ PA7 La ~ Lg, Lp POWER AMPLIFIER (IC101: LA4598) The power amplifier is a two-channel amplifier with standby switch. The following table shows the pin function of IC101. LED DRIVING Pin No. Terminal In/Out Function 1 Power GND In Ground (0V[...]

  • Page 10

    — 10 — TROUBLESHOOTING Nature of Trouble Faulty Block Cause/Remedy No power Power supply circuit Faulty Q101 ~ Q106. Replace Q101 ~ Q105. Faulty D101 ~ D105. Replace D101 ~ D105. Power jack (J101) Open J101 or poor soldering. Replace J101 or resolder. Reset IC (IC105) Faulty IC105. Replace IC105. CPU (LSI105) Faulty LSI105. Replace LSI105. Osci[...]

  • Page 11

    — 11 — MAJOR W A VEFORMS 1 POWER ON signal UPD912GF-3BA pin 21 2 APO signal UPD912GF-3BA pin 3 3 Reset signal for the DSP UPD912G-3BA pin 99 5 Key scan signal KC0 UPD912GF-3BA pin 31 6 Key scan signal KC1 UPD912GF-3BA pin 32 7 Key scan signal KC2 UPD912GF-3BA pin 33 4 Synchronizing pulse UPD912GF-3BA pin 6 A Word clock LRCK UPD912GF-3BA pin 13 [...]

  • Page 12

    — 12 — PRINTED CIRCUIT BOARDS Main PCB JCM461-MA1M Console PCB JCM461-CN1M Top View Top View BL R110 R109 75 250 E 5 R137 C116 300 PR Y L105 C208 C167 IC105 X102 3 C174 C173 D110 R182 R180 R302 C164 R179 R178 75 1 1 C207 200 150 250 R309 R181 R272 R273 R274 R275 5 R292 75 C206 R276 R277 R278 R279 200 250 175 75 C201 C205 R269 R268 R266 R265 R26[...]

  • Page 13

    — 13 — 9 10 11 12 13 14 15 16 20 1 2 3 4 17 56 7 8 19 18 SCHEMA TIC DIAGRAMS Main PCB JCM461-MA1M Notes: 1. All capacitance values are indicated in " µ F" (p=10 -6 µ F). 2. All resistance values are indicated in " Ω " (k=10 3 Ω , M=10 6 Ω ).[...]

  • Page 14

    — 14 — Console PCB JCM461-CN1M[...]

  • Page 15

    — 15 — Keyboard PCBs JCM617T-KY1M/KY2M[...]

  • Page 16

    — 16 — 13 15 14 12 1 2 8 3 4 5 6 7 9 10 12 21-2 21-1 16 17 18 19 20 21 22 11 27 25 24 26 23 EXPLODED VIEW[...]

  • Page 17

    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 seperately. 3. The numbers in item column correspond to the same numbers in drawing. P ARTS LIST CTK-630[...]

  • Page 18

    FOB Japan N Item Code No. Parts Name Specification Q N.R.Yen R Unit Price Main PCB N 11 6923 7120 PCB ass'y JCM461-MA1M M140225*1 1 7,920 A N LSI101 2012 0441 LSI, DSP HG51B227FB 1 530 A N LSI102/103 2012 0434 LSI, RAM SRM2264LM90 2 280 A N LSI104 2012 0707 LSI, ROM MX23C1610MC-12CA20 1 1,300 A LSI105 2012 0168 LSI, CPU UPD912GF-3BA 1 750 A IC[...]

  • Page 19

    FOB Japan N Item Code No. Parts Name Specification Q N.R.Yen R Unit Price N 6 6923 7200 Rubber button M240099-1 1 60 B N 7 6923 7190 Rubber button M240098-1 1 60 B N 8 6923 4740 Button contct rubber M240152-1 1 60 B 12 3831 0833 Speaker S12J49A 1 400 B N 13 6923 7181 Top panel M240217A*1 1 300 C 14 6921 5040 Volume knob M311860-1 1 13 B N 15 6923 7[...]

  • Page 20

    MA0800951A[...]