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Casio GZ-500 manual

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Table of contents for the manual

  • Page 1

    GM SOUND KEYBOARD GZ-500 (with price) GZ-500[...]

  • Page 2

    — 2 — ELECTRICAL Current drain with 9 V DC: No sound output 294 mA ± 20% Maximum volume 940 mA ± 20% with 32 polyphonic notes in tone No. 078 Volume; maximum, Velocity: maximum Phone output level (Vrms with 8 load each channel): with key A5 pressed in tone No. 078 100 mV ± 20% Line output level (Vrms with 47 k load each channel): with key A5[...]

  • Page 3

    — 3 — OPERA TION SETTING UP THE KEYBOARD The initial settings Tone: 000 (Piano) Channel 1 - 9 & 11 - 16 dr0 (Drum set 0) Channel 10 Modulation: 0 (Off) MIDI control change Volume: 100 Pan: 64 (Center) Expression: 127 (Maximum) Effect depth: 127 (Maximum) Pitch bend sense: 2 Coarse tune: 0 (Center) Fine tuning: 0 (Center) Digital effect: E-0[...]

  • Page 4

    — 4 — The initial settings in The General MIDI system Channel 1 - 9 & 11 - 16 Channel 10 Program change: 000 (Piano) Drum set No.: 0 Pitch bend: LSB: 40H, MSB: 00H Modulation: 0 (Off) Volume: 100 Volume: 100 Pan: 64 (Center) Pan: 64 (Center) Expression: 127 (Maximum) Expression: 127 (Maximum) Sustain: 0 (Off) Soft: 0 (Off) Soft: 0 (Off) Eff[...]

  • Page 5

    — 5 — Octave shift setting and keyboard range Operation 2 The MIDI messages listed in the following table are transmitted when completing the setting operation. The setting affects only on the currently selected MIDI channel. First select the desire MIDI channel before changing settings. Selecting a MIDI channel 1. Press the MIDI button. The di[...]

  • Page 6

    — 6 — The initial settings of MIDI control change Pitch bend: +/- 0 (Center) Modulation: 0 (Off) Expression: 127 (Maximum) Sustain: 0 (Off) Sostenuto: 0 (Off) Soft: 0 (Off) Channel pressure: 0 (Off) RPN: null Operation 3 Messages of Digital Effect Type, which are system exclusive messages, are transmitted when completing the following operation[...]

  • Page 7

    — 7 — Transmittable Messages Note No.: 12 ~ 72 (Oct. shift -2), 24 ~ 84 (Oct. shift -1) 36 ~ 96 (Oct. shift 0), 48 ~ 108 (Oct. shift 1) Velocity: 1 ~ 127 Note Off: velocity 0 Program Change: 0 ~ 127 (Channels 1 - 9 & 11 - 16), 0 ~ 7 (Channel 10) Pitch Bend: 00H / 00H ~ 7FH / 7FH Control Change: Modulation 0 ~ 127 Volume 0 ~ 127 Pan 0 ~ 127 [...]

  • Page 8

    — 8 — BLOCK DIAGRAM KC0 ~ KC7 SI0 ~ SI7 FI0 ~ FI7 Key Controller LSI107 HG52E35P Working Storage RAM (64K-bit) LSI105 SRM2264LM90-B KO1 ~ KO3 LED driver IC371 BA612 LS0 ~ LS7 Buttons KI1 ~ KI5 Power Switch IN EA0 ~ EA14 ED0 ~ ED7 DSP LSI102 HG51B115FD RA0 ~ RA19 RD0 ~ RD15 Sound Source ROM (16M-bit) LSI101 TC5316200CF-C112 WCK1 SLOP BCK D/A Con[...]

  • Page 9

    — 9 — Note: Each key has two contacts, the first conatct (1) and second contact (2). CIRCUIT DESCRIPTION KEY MATRIX NOMENCLATURE OF KEYS 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[...]

  • Page 10

    — 10 — Name Voltage For operation of VDD +5 V CPU, Reset IC, Working storage RAM DVDD +5 V DSP, Key touch LSI, Sound source ROM, Effect RAM, KO siginal generator AVDD +5V DAC, Filter LVDD +4.5 V LED Driver VCC +9 V Power amplifier, Pilot lamp VC +9 V Power amplifier BUTTON MATRIX KI1 KI2 KI3 KI4 KI5 KO0 30 21 KO1 Control Demo Effect MIDI KO2 +9[...]

  • Page 11

    — 11 — CPU (LSI106: HD6433298A42F) The 16-bit CPU contains a 32k-bit ROM, a 1k-bit RAM, seven 8-bit I/O ports, an A/D convertor and MIDIl interfaces. The CPU accesses to the working storage RAM, the DSP and the key touch LSI. The CPU interprets MIDI message using the working storage RAM. The CPU also controls buttons and LEDs. The following tab[...]

  • Page 12

    — 12 — Pin No. Terminal In/Out Function 1 ~ 8 CD0 ~ CD7 In/Out Data bus 9, 10 CE1, TRSB Not used 11 GND7 In Ground (0V) source 12 CK16 Out Terminal for 24.576 MHz clock check point 13 VCC1 In +5V source 14 CK0 In Clock input. Connected to terminal CK16. 15 TCKB Not used 16 VCC1 In +5V source 17 GND1 In Ground (0V) source 18, 19 XT0, XT1 In/Out [...]

  • Page 13

    — 13 — Block diagram of DSP and DAC circuit Pin No. Terminal In/Out Function 106 EOEB Out Read enable signal output for the effect RAM 108 VCC7 In +5V source 111 ECEB Out Chip select signal output for the effect RAM 113 ~ 117 ED11 ~ ED15 Not used 118 VCC4 In +5V source 119 GND4 In Ground (0V) source 120 ~ 122 ED8 ~ ED10 Not sued 123 ~ 130 ED0 ~[...]

  • Page 14

    — 14 — CRDB CWRB CKI CCSB CD0 CD7 CA0 ~ CA2 First contact Second contact KC0 KC7 FI0 FI7 SI0 SI7 Key input signal Key scan signal ~ Data bus Address bus Key Controller LSI107 HG52E35P Keyboard FI SI KC RD WR APO A13 A14 CLOCK RESET RESB DAC (LSI104: UPD6376GS) The DAC receives 16-bit serial data output from the DSP. The data contains digital so[...]

  • Page 15

    — 15 — AVDD 1K 1K 1K C222(H) C103(H) AG AG 1K AG To main volume - + IC105 M5218APR 10V22 µ C333(H) Q107/108 2SC1740 18K 50V1 µ From the DAC 1K AG AVDD The following table shows the pin functions of LSI107. Pin No. Terminal In/Out Function 1 REQB Out Not used 2, 3, 60 ~ 63 FI8 ~ FI10, SI8 ~ SI10 In Not used. Connected to + 5V. 4 VCC In +5V sou[...]

  • Page 16

    — 16 — IC102 TC74HC174AF LG CPU LSI106 HD6433298A42F LVDD P40 P41 KP0 ~KP5 (KO0 ~ KO5) IC371 BA612 LED Driver Q104 ~Q111 LED Driver LS0 ~ LS7 La ~ Lg, Lp KO Signal Generator POWER AMPLIFIER (IC402: LA4598) The power amplifier is a two-channel amplifier with standby switch. The following table shows the pin function of IC402. Pin No. Terminal In[...]

  • Page 17

    — 17 — MAJOR W A VEFORMS 1 2 CH1 CH2 A . 1 s CH1: CH2: 5 V 5 V 3 4 CH1 5 5 V CH2 A . 1 s 5 V CH1: CH2: 6 7 CH1 CH2 CH3 8 A 20 µ s 5 V CH1: 5 V CH2: 5 V CH3: 9 0 CH1 CH2 CH3 A A 10 ms 5 V CH1: 5 V CH2: 5 V CH3: B C CH1 CH2 CH3 D 5 V CH1: 5 V CH2: 5 V CH3: A 1 µ s E F CH1 CH2 CH1: 20 mV ~ CH2: 20 mV ~ A 1 ms G CH1 Note OFF Note ON CH1: 5 V A . [...]

  • Page 18

    — 18 — SCHEMA TIC DIAGRAMS AMP./VOLUME PCBs JCM715-MA2M/MA3M[...]

  • Page 19

    — 19 — MAIN PCB JCM715-MA1M 6 7 8 17 16 15 14 12 13 1 2 5 3 4 9 10 11[...]

  • Page 20

    — 20 — CONSOLE PCBs JCM715-CN1M/2M/3M[...]

  • Page 21

    — 21 — KEYBOARD PCBs M616T-KY1M/KY2M[...]

  • Page 22

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

  • Page 23

    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 GZ-500[...]

  • Page 24

    FOB Japan N Item Code No. Parts Name Specification Q N.R.Yen R Unit Price Main PCB N1 6923 6180 PCB ass'y M715-MA1M M140244*1 1 7,810 A N LSI101 2012 1498 LSI TC5316200CF-C117 1 980 A N LSI102 2012 1316 LSI HG51B155FD-1 1 1,160 A N LSI103 2012 0777 LSI LC33832M-70-TLM 1 410 A N LSI104 2114 4221 LSI UPD6376GS-E1 1 200 A N LSI105 2012 0770 LSI S[...]

  • Page 25

    FOB Japan N Item Code No. Parts Name Specification Q N.R.Yen R Unit Price 2301 0101 Diode 1S2473-T-77-T 58 8 C Bender VR102 2765 1141 Rotary volume RK1631110-50KB 1 190 B N 6 6923 6450 Bender knob M340169-2 1 60 C Mechanical Parts N 7 6906 7781 Rubber button, Light gray M312088A-3 1 97 B N 8 6923 6420 Rubber button, White M312125-3 2 67 B N 9 6923 [...]

  • Page 26

    MA0800751A[...]