Casio GZ-500 User Manual

GZ-500

(with price)

GM SOUND KEYBOARD

GZ-500

CONTENTS

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Circuit Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Major waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Schematic Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Exploded View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

SPECIFICATIONS

GENERAL

Number of keys: 61 Polyphonic: 32-note Preset tones: 128, Drum set: 8 Keyboard controls: Touch response: On/Off Digital effects: 10, including Reverb-1, Reverb-2, Reverb-3, Chorus, Tremolo,

Phase Shifter, Organ SP, Enhancer, Flanger, EQ Loudness Modulation: On/Off, Depth setting range: 0 - 127 Pitch bend wheel: Bend sense: 0 - 12 Tuning control: 440Hz ± 50 cents Built-in speakers: 12 cm dia. 2 W input rating: 2 pcs. Terminals: Phone Jack [Output impedance: 100 Ω, Output voltage: 4.5 V(rms) MAX],

MIDI Jacks (IN, OUT), Assignable Jack, AC Adapter Jack (9 V) Auto power off: Approximately 6 minutes after the last operation Power source: 2-way AC or DC source

AC: AC adapter

DC: 6 D size dry batteries Power consumption: 7.7 W Dimensions (HWD): 129 x 942 x 367 mm (5-1/16 x 37-1/16 x 14-1/2 inches) Weight: 5.3 kg (11.7 lbs) excluding batteries

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 pressed in tone No. 078 1350 mV ± 20%

Minimum operating voltage: 6.0 V

— 2 —

SETTING UP THE KEYBOARD

OPERATION

Item Settin

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. Using the +/- key, select "SoS" on the dispaly.

Soft pedal 1. Press the control button and repeat it until the display

shows "JAC".

2. Using the +/- key, select "SFt" on the dispaly.

GM Reset 3* 2* 1. Press the MIDI button and repeat it until the display shows

"Grt". "SUr" and "Grt" will appear alternately on the display.

2. Press the + key.

3. Press the + key again.

Notes: 1* See the initial settings list as shown below.

2* See the initial settings in The General MIDI system on next page. 3* The exclusive message of "GM system on" will be tramsmitted when completing the operation.

System exclusive: GM system on [F0][7E][7F][09][01][F7]

Setting operation

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 (Digital effect 0) MIDI channel: 01 Channel On/Off: On Octave shift: 0 Modulation depth: 064 Touch response: r-0 (Touch curve 0) Velocity at touch

response OFF: 100 Assignable jack: SUS (Sustain pedal) Local control On/Off: On

— 3 —

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) Effect depth: 127 (Maximum) Effect depth: 127 (Maximum) Pitch bend sense: 02 (2 seminotes) Coarse tune: LSB:40H, MSB:00H Fine tune: LSB:40H, MSB:00H RPN: Null Channel pressure: 0 (Off)

TRANSMITTING MIDI MESSAGES

Operation 1

MIDI messages of note on/off, velocity and modulation are transmitted no matter which MIDI channel is selected. Note on/off message is transmitted when the corresponding key is pressed/released.

Use the Octave Shift Button, shift the octave range up or down so that GZ-500 is able to send note numbers 17 to 108 but the keyboard has 61 keys only. Velocity is also transmitted when a key is pressed. GZ-500 sends the velocity in accordance with the strength of the pressed key and the selected touch curve (sensitivity). Data of modulation is transmitted when the corresponding wheel is operated.

MIDI Message Setting Setting operation

Note On/Off Octave shift 1. Press the octave shift button.

2. Using the +/- key, select an octave range -2 to 1 you want.

Velocity Velocity curve 1. Press the control button and repeat it until the display

shows "tCH".

2. Using the 10-key, enter a number from 0 to 7.

Touch response OFF 1. Press the control button and repeat it until the display

shows "tCH".

2. Using the 10-key, enter a number 0.

3. Press the - key. The display will show "oFF".

Velocity at touch response OFF

Modulation Modulation depth 1. Press the control button and repeat it until the display

1. Press the control button and repeat it until the display shows "tCH".

2. Using the 10-key, enter a 3-digit number from 001 to 127.

shows "dEP".

2. Using the 10-key, enter a 3-digit number from 001 to 127.

— 4 —

Octave shift setting and keyboard range

-21 0 -1

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 display shows the current MIDI channel, eg. "C01" means Channel 1.

2. Using the 10-key, enter a number from 1 to 16.

Changing Program Change / Control Change

MIDI Message Setting Operation

Program change 1. Reffering to the tone number list on the panel, find the 3-digit tone

number you desire.

2. Press the tone button.

3. Using the 10-key, enter the 3-digit number.

Control change

Volum

1. Press the MIDI button and repeat it until "voL" appears on the display.

2. Using the 10-key, enter a 3-digit number from 000 to 127.

1. Press the MIDI button and repeat it until "PAn" appears on the display.

2. Using the 10-key, enter a 3-digit number from 000 to 127.

Expression 1. Press the MIDI button and repeat it until "EPS" appears on the display.

2. Using the 10-key, enter a 3-digit number from 000 to 127.

Effect depth 1. Press the MIDI button and repeat it until "EFt" appears on the display.

2. Using the 10-key, enter a 3-digit number from 000 to 127.

Fine tun

1. Press the MIDI button and repeat it until "tUn" appears on the display.

2. Using the 10-key and the - key, enter a 2-digit number from -50 to 50.

Transpose 1. Press the MIDI button and repeat it until "trn" appears on the display.

2. Using the 10-key and the - key, enter a 2-digit number from -12 to 12.

All notes of

1. Press the MIDI button and repeat it until "Ano" appears on the display. "SUr" and "Ano" will appear alternately on the display.

2. Press the + key.

3. Press the + key again to transmit the message.

All sounds off 1. Press the MIDI button and repeat it until "ASo" appears on the display.

"SUr" and "ASo" will appear alternately on the display.

2. Press the + key.

3. Press the + key again to transmit the message.

Reset all controller

1. Press the MIDI button and repeat it until "rAC" appears on the display. "SUr" and "rAC" will appear alternately on the display.

2. Press the + key.

3. Press the + key again to transmit the message.

— 5 —

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.

Transmitting a digital effect type

1. Press the tone button.

2. Press the digital effect button once when the digital effect indicator is off.

Press the digital effect button twice when the digital effect indicator is lighting up.

3. Using the 10-key, enter a number from 0 to 9.

4. The display shows the degital efffect type entered, eg. "E_3" means digital effect 3 (Chorus)

5. Wait for about a few seconds unitl the display show the tone number at Step 1.

System exclusive: Effect change [F0][44][0B][09][xx][F7]

[xx]: [00] - [09], [0F]

[00]: Reverb1 (Stage) [01]: Reverb2 (Hall) [02]: Reverb3 (Room) [03]: Chorus [04]: Tremolo [05]: Phase shifter [06]: Organ speaker [07]: Enhance [08]: Flanger [09]: EQ Loundness [0F]: Effect OFF

RECEIVING MIDI MESSAGES

The MIDI monitor blinks during receiving a MIDI message. To recognize Note On/Off messages, set a MIDI channel on.

Setting on/off of a MIDI channel

1. Press the MIDI channel button.

2. Press the channel on/off button.

The LED lights when the MIDI channel is on. The LED goes out when the MIDI channel is off.

Active sensing

This message checks if the MIDI cable is disconnected. Once GZ-500 has received this message, it always counts time of an interval to a next MIDI message. In case when GZ-5 receives no MIDI message for 420 msec of time, it will stop sound output and reset all controllers, then it will cancel the function of active sensing.

— 6 —

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

Expression 0 ~ 127

Sustain 0: Off, 127: On

Sosutenuto 0: Off, 127: On

Soft 0: Off, 127: On

Effect Depth 0 ~ 127

Pitch Bend Sense 00H / --H ~ 0CH / --H (12 seminotes)

Coarse Tune 34H / --H ~ 40H / --H ~ 4CH / --H

(-12 seminotes) ~ (center) ~ (+12 seminotes)

Fine Tune 20H / 00H ~ 40H / 00H ~ 60H / 00H

(-50 cents) ~ (center) ~ (+50 cents) All Notes Off All Sounds Off Reset All Controllers

Exclusive: Effect Change

General MIDI On

Receivable Messages

Note No.: 0 ~ 127 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 (0 cent) ~ 127 (+/-50 cents)

Volume 0 ~ 127 Pan 0 (Left) ~ 64 (Center) ~ 127 (Right) Expression 0 ~ 127 Sustain 0 ~ 63: Off, 64 ~ 127: On Sosutenuto 0 ~ 63: Off, 64 ~ 127: On Soft 0 ~ 63: Off, 64 ~ 127: On Effect Depth 0 ~ 127 Pitch Bend Sense 00H / --H ~ 0CH / --H (12 seminotes) Coarse Tune 34H / 00H ~ 40H / 00H ~ 4CH / 00H

(-12 seminotes) ~ (center) ~ (+12 seminotes) Fine Tune 20H / 00H ~ 40H / 00H ~ 60H / 00H

(-50 cents) ~ (Center) ~ (+50 cents) RPN Null All Notes Off All Sounds Off Reset All Controllers

Channel Pressure: 0 (0 cent) ~ 127 (+/-50 cents) Exclusive: Effect Change

General MIDI On

Active Sensing

— 7 —

BLOCK DIAGRAM

MIDI

OUT

Keyboard

FI0 ~ FI7

SI0 ~ SI7

Key Controller

LSI107

HG52E35P

KC0 ~ KC7

A0 ~ A2

LED driver

Q104 ~ Q111

LS0 ~ LS7

CPU

LSI106

HD6433298A42F

D0~D7

La ~ Lg, Lp

A0 ~ A14

7-seg. LED

LEDs

P41 P40

KO Signal

Generator IC102

TC74HC174AF

KI1 ~ KI5

POWER

RESET

Working Storage RAM

SRM2264LM90-B

RH5VL36AA

(64K-bit)

LSI105

LED driver

KO0 ~ KO5

Reset IC

IC5

IC371

BA612

KO1 ~ KO3

Buttons

Power Switch

Effect RAM

(256K-bit)

LSI103

LC33832M-70

Speakers

EA0 ~ EA14

ED0 ~ ED7

Output

A0 ~ A3

DSP

LSI102

HG51B115FD

WCK1 SLOP BCK

D/A Converter

LSI104

UPD6376GS

Filter

IC101

Main Volume

Power Amplifier

IC402

LA4598

Filter

IC101

RA0 ~ RA19

RD0 ~ RD15

Sound Source ROM

(16M-bit)

LSI101

TC5316200CF-C112

LVDD

VCC

Power Supply Circuit IC401, Q401 ~ Q405

AVDD

DVDD

VDD

— 8 —

+ 18 hidden pages