(with price) GZ-500 GZ-500 GM SOUND KEYBOARD
CONTENTS Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Circuit Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Major waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OPERATION SETTING UP THE KEYBOARD Item Setting Setting operation System Reset 1* 1. Press the control button and repeat it until the display shows "Srt". "SUr" and "Srt" will appear alternately on the display. 2. Press the + key. Assignable Jack Sustain pedal 1. Press the control button and repeat it until the display shows "JAC". 2. Using the +/- key, select "SUS" on the dispaly. Sostenuto pedal 1. Press the control button and repeat it until the display shows "JAC". 2.
The initial settings in The General MIDI system Channel 1 - 9 & 11 - 16 Program change: Pitch bend: Modulation: Volume: Pan: Expression: Sustain: Soft: Effect depth: Pitch bend sense: Coarse tune: Fine tune: RPN: Channel pressure: 000 (Piano) LSB: 40H, MSB: 00H 0 (Off) 100 64 (Center) 127 (Maximum) 0 (Off) 0 (Off) 127 (Maximum) 02 (2 seminotes) LSB:40H, MSB:00H LSB:40H, MSB:00H Null 0 (Off) Channel 10 Drum set No.
Octave shift setting and keyboard range 1 0 -1 -2 C4 (60) Octave range when set to -2 Octave range when set to -1 Octave range when set to 0 Octave range when set to 1 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 initial settings of MIDI control change Pitch bend: Modulation: Expression: Sustain: Sostenuto: Soft: Channel pressure: RPN: +/- 0 (Center) 0 (Off) 127 (Maximum) 0 (Off) 0 (Off) 0 (Off) 0 (Off) null Operation 3 Messages of Digital Effect Type, which are system exclusive messages, are transmitted when completing the following operation. Transmitting a digital effect type 1. Press the tone button. 2. Press the digital effect button once when the digital effect indicator is off.
Transmittable Messages Note No.: Velocity: Note Off: Program Change: Pitch Bend: Control Change: Exclusive: 12 ~ 72 (Oct. shift -2), 24 ~ 84 (Oct. shift -1) 36 ~ 96 (Oct. shift 0), 48 ~ 108 (Oct.
BLOCK DIAGRAM LED driver Q104 ~ Q111 MIDI OUT IN La ~ Lg, Lp LS0 ~ LS7 KO1 ~ KO3 P41 P40 KO Signal KO0 ~ Generator IC102 KO5 TC74HC174AF CPU LSI106 HD6433298A42F Keyboard LED driver IC371 BA612 7-seg.
CIRCUIT DESCRIPTION KEY MATRIX 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) B3 (1) SI2 E3 (2) F3 (2) F#3 (2) G3 (2) G#3 (2) A3 (2) A#3 (2) B3 (2) FI3 C4
BUTTON MATRIX KI1 KI2 KI3 KI4 KO0 3 0 2 1 KO1 Control Demo Effect MIDI KO2 + 9 7 8 KO3 6 - 5 4 KO4 Tone MIDI Channel Channel On/Off Octave Shift KI5 Modulation POWER SUPPLY CIRCUIT The power supply circuit generates six voltages as shown in the following table. VDD voltage is always generated. The others are controlled by APO signal output from the CPU.
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 table shows the pin functions of LSI106. Pin No.
Pin No. 1~8 Terminal CD0 ~ CD7 9, 10 11 12 13 CE1, TRSB GND7 CK16 VCC1 14 15 16 17 CK0 TCKB VCC1 GND1 In In 18, 19 20 21 22 ~ 25 XT0, XT1 SGL CCSB CA0 ~ CA3 In/Out In In In 26 27 28 CE0 CWRB CRDB In In In Not used. Connected to ground. Write enable signal Read enable signal 29 ~ 32 33 34 35 ~ 39 RESB TESB In In Not used Reset signal input Not used. Connected to +5V.
Pin No. 106 108 111 113 ~ 117 118 119 120 ~ 122 123 ~ 130 131 132 ~ 134 135, 136 Terminal EOEB VCC7 ECEB ED11 ~ ED15 VCC4 GND4 ED8 ~ ED10 ED0 ~ ED7 GND5 In/Out Out In Out Function Read enable signal output for the effect RAM +5V source Chip select signal output for the effect RAM Not used +5V source Ground (0V) source used Not sued Data bus for the effect RAM Ground (0V) source Not used. Connected to ground.
DAC (LSI104: UPD6376GS) The DAC receives 16-bit serial data output from the DSP. The data contains digital sound data of the melody, chord, bass, and percussion for the right and left channels. The DAC converts the data into analog waveforms by each channel and output them separately. The following table shows the pin functions of LSI1. Pin No. 1 2 3 4 5 6 7, 8 9 10 11 12 13 14 15 16 Terminal SEL D.GND NC DVDD A.GND R.OUT A.VDD R.REF L.REF L.OUT A.
The following table shows the pin functions of LSI107. Pin No. Terminal In/Out 1 REQB Out 4 5 FI8 ~ FI10, SI8 ~ SI10 VCC CRDB 6 CWRB 2, 3, 60 ~ 63 Function Not used In Not used. Connected to + 5V. In In +5V source Read enable signal input In Write enable signal input 7 CCBB In Chip select signal input 8, 9, 11 10 T, STBY, W RESB In In Not used. Connected to +5V.
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. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Terminal Power GND Ch1 B.S. Ch1 OUT VCC Ch1 N.F. Ch1 IN D.C. Pre GND Stand by Ch2 IN Ch2 N.F. Ch2 OUT Ch2 B.S.
MAJOR WAVEFORMS A.1 s A 1 µs A.1 s CH1 3 A 1 ms CH1 B 1 CH1 CH1 E CH2 C 4 CH2 2 CH2 D 5 CH3 CH1: 5 V CH2: 5 V 2 CH1: 5 V CH2: 5 V CH1: 5 V CH2: 5 V 1 Voltage VDD 3 Power ON signal PSW CG connector pin 6 Initial reset signal RH5VL36A pin 1 4 5 ~ CH1: 20 mV CH3: 5 V B Word clock WOK1 HD6433298A42F pin 5 APO signal HD6433298A42F pin 59 Reset signal HD6433298A42F pin 3 A 20 µs 6 C D CG connector pin 3 F Filter output AOL CG connector pin 4 Tone : Whistle (No.
SCHEMATIC DIAGRAMS AMP.
MAIN PCB JCM715-MA1M 17 2 16 3 14 13 5 15 12 4 1 6 9 10 11 — 19 — 7 8
CONSOLE PCBs JCM715-CN1M/2M/3M — 20 —
KEYBOARD PCBs M616T-KY1M/KY2M — 21 —
EXPLODED VIEW 14 11 13 15 7 1 12 9 8 10 17 16 3 11 6 19 18 20 — 22 — 2 20-1 22 21 20-2 5 24 4 23
PARTS LIST GZ-500 Notes: 1. Prices and specifications are subject to change without 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.
N Item N N N N N N N 1 LSI101 LSI102 LSI103 LSI104 LSI105 LSI106 LSI107 IC101 IC102 IC103 IC104 IC105 Q101, Q102 Q103 ~ Q111 D101 D102 X101 X102 N N N N N N N N N N N N N N N N N Code No.
N N N N N N N N N N N N Item VR102 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 20-1 20-2 21 22 23 24 Code No.
MA0800751A
