CASIO GZ50M Service Manual

GZ-50M

(with price)

POWER

VOLUME

MIDI

MONITOR

MIN

GM SOUND MODULE

GENERAL

DEMO PHONES

MAX

CONTENTS

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

MIDI Messages receivable with GZ-50M . . . . . . . . . . . . . . . . . . . . . 3

Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Circuit Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Major waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

PCB View and Check Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Exploded View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

SPECIFICATIONS

GENERAL

Sound source: The General MIDI system 1

Number of tones: 128 Number of drum sets: 8 Number of layer voice: 32

Digital effects: 10, including Reverb-1, Reverb-2, Reverb-3, Chorus, Tremolo,

Phase Shifter, Organ SP, Enhancer, Flanger, EQ Loudness Demonstration tune: Suite for Rebecca (Arranged and programmed by Wojtek Gogoleski) Volume control: Analog volume MIDI monitor: LED Tuning: Center: 440 Hz Terminals: Headphone Jack [Output impedance: 68 Ω, Output voltage: 0.3 V(rms)MAX],

Line Out Jack [Output impedance: 2 KΩ, Output voltage: 1.5 V8rms) MAX],

MIDI IN Jack, AC Adapter Jack (9 V) Power source: AC source only: AC adapter Power consumption: 2.8 W Dimensions (HWD): 35 x 113 x 169 mm (1-3/8 x 4-7/16 x 6-5/8 inches) Weight: 450 g (1 lbs)

ELECTRICAL

Current drain with 9 V DC: No sound output 210 mA ± 20% Maximum volume 230 mA ± 20%

with 32 polyphonic in tone No.078 Volume; maximum, Touch response: maximum

Phone output Level (Vrms with 8 Ω load each channel):

with keys C6 and F6 in tone No.078 85 mV ± 20%

Line output level (Vrms with 47 KΩ load each channel):

with keys C6 and F6 in tone No.078 300 mV ± 20%

Minimum operating voltage: 4.0 V

— 2 —

MIDI messages receivable with GZ-50M

MIDI channel: 1 - 16 channel Note On/Off: Note number 0 - 127

Velocity 1 - 127

Program change: 0 - 127 on channel 1 -9 & 11 - 16

0 - 7 on channel 10 Pitch bend: 00H/00H - 7FH/7FH Control change: Modulation Control No. 1 0 - 127

Volume Control No. 7 0 - 127

Pan Control No. 10 0 (left) - 64 (center) - 127 (right)

Expression Control No. 11 0 - 127

Hold Control No. 64 0 - 63: Off, 64 - 127: On

Sostenuto Control No. 66 0 - 63: Off, 64 - 127: On

Soft Control No. 67 0 - 63: Off, 64 - 127: On

Effect depth Control No. 91 0 -127

All sounds off Control No. 120

Reset all controllers Control No. 121

* See next page for information about the initial settings. Local control On/Off Control No. 122 0: Off, 127: On All notes off Control No. 123 Registered Parameter Number (RPN) Control No. 36: LSB, No.37: MSB

Pitch bend sense Control No. 100 00H

Control No. 101 00H

Data entry Control No. 6 00H - 0CH

Control No. 36 00H

Fine tuning Control No. 100 01H

Control No. 101 00H (20H: -50 cents)

Data entry Control No. 6 20H - 40H - 60H (40H: center)

Control No. 36 00H (60H: +50 cents)

Coarse tuning Control No. 100 02H

Control No. 101 00H (34H: -12 seminotes)

Data entry Control No. 6 34H - 40H - 4CH (40H: center)

Control No. 36 00H (4CH: +12 seminotes)

RPN null Control No. 100 7FH

Control No. 101 7FH Active sensing: Channel pressure: Reconized as modulation 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

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

* See next page for information about the initial settings in The General MIDI system.

— 3 —

The initial setteings

Pitch bend: 0 Modulation: 0 (Off) Expression: 127 (Maximum) Sustain: 0 (Off) Sostenuto: 0 (Off) Soft: 0 (Off) Channel pressure: 0 (Off) RPN: Null

The initial settings in The General MIDI system

Channel 1 - 9 & 11 - 16

Program change: 000 (Piano) Pitch bend: LSB: 40H, MSB: 00H Modulation: 0 (Off) Volume: 100 Pan: 64 (Center) Expression: 127 (Maximum) Sustain: 0 (Off) Soft: 0 (Off) 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)

Channel 10

Drum set No.: 0 Volume: 100 Pan: 64 (Center) Expression: 127 (Maximum) Effect depth: 127 (Maximum) Soft: 0 (Off)

— 4 —

Model GZ-50M MIDI Implementation Chart

Function ... Transmitted Recognized Remarks

Version: 1.0

Basic Default Channel Changed

Default

Mode Messages

Altered

Note Number: True voice

Velocity Note ON

Note OFF

After Key's Touch Ch's

Pitch Bender

06, 38 Control 07 Change 10

11 64 66 67 91

100, 101

120 121

X X

❊❊❊❊❊❊❊❊❊❊❊❊❊❊

X X

X X X X X X X X X X X

1-16 channel 1-16 channel

Mode 3 X

❊❊❊❊❊❊❊❊❊❊❊❊❊❊

0 ~ 127 12 ~ 108 *1

9nH v = 1~127

9nH v = 0, 8nH V=❊❊

X O

*2 O O

*2 O

*3 O O O O O O O O

*3 O O

*1:Different per tones.

❊❊ = No relation

Modulation Data entry Volume Pan Expression Hold 1 Sostenuto Soft External effect depth RPN LSB • MSB All sounds off Reset all controllers

Program Change : True #

System Exclusive

System : Song Pos Common : Song Sel

: Tune

System : Clock Real Time : Commands

Aux : Local ON/OFF Messages : All notes OFF

: Active Sense : Reset

Remarks

Mode 1 : OMNI ON, POLY Mode 2 : OMNI ON, MONO Mode 3 : OMNI OFF, POLY Mode 4 : OMNI OFF, MONO

❊❊❊❊❊❊❊❊❊❊❊❊❊❊

X X

X X X X

*2: Vibrato effect is obtained when received either message of modulation or channel after touch. *3: Reception of pitch bend sense, fine tune, coarse tune, and RPN Null. *4: GM system on [F0][7E][7F][09][01][F7]

Effect Change [F0][44][0B][09][xx][F7]

❊❊❊❊❊❊❊❊❊❊❊❊❊❊

O X

X X

X O O X

0 ~ 127

[xx]: E_0[00] - E_9[09], Off[0F]

O X

: No

: Yes

— 5 —

LIST OF TONES AND OCTAVE RANGES

TONE NO./TONE NAME

PIANO

000 PIANO 032 WOOD BASS 001 HARD PIANO 033 ELEC BASS 1

002 STUDIO PIANO 034 ELEC BASS 2 003 HONKY-TONK 035 FRETLESS BASS

004 ELEC PIANO 1 036 SLAP BASS 1 005 ELEC PIANO 2 037 SLAP BASS 2 006 HARPSICHORD 038 SYNTH-BASS 1

007 CLAVELECTRO 039 SYNTH-BASS 2

GM OCT AVE RANGE

A0 – C8 A0 – C8

E1 – G7 E1 – G7

F2 – F6

C2 – C7

TONE NO./TONE NAME

BASS

CHROMATIC PERCUSSION STRING/ORCHESTRA

008 CELESTA 040 VIOLIN 009 GLOCKENSPIEL 041 VIOLA

010 MUSIC BOX 042 CELLO 011 VIBRAPHONE 043 CONTRABASS 012 MARIMBA 044 TREMOLO STR

013 XYLOPHONE 045 PIZZICATO STR 014 TUBULAR BELLS 046 HARP 015 DULCIMER 047 TIMPANI

C4 – C8 C5 – C8

C4 – C6

F3 – F6

C3 – C6 F4 – C7

C4 – F5 C4 – C6

GM OCT AVE RANGE

E1 – G3 E1 – G3

E1 – G3 E1 – G3 E1 – G3

E1 – G3

G3 – C7 C3 – C6

C2 – C5 E1 – G3 E1 – C7

E1 – C7 B0 – G7 C2 – A3

ORGAN ENSEMBLE

016 ELEC ORGAN 048 STRINGS 1 017 JAZZ ORGAN 049 STRINGS 2 018 ROCK ORGAN 050 SYNTH-STR 1

019 CHURCH ORGAN 051 SYNTH-STR 2 020 REED ORGAN 052 CHOIR 021 ACCORDION 053 MOON VOICE

022 HARMONICA 054 SYNTH-VOICE 023 BANDNEON 055 ORCHESTRA HIT

C2 – C7 C2 – C7 C2 – C7

A0 – C8 C2 – C7

F3 – F6

C4 – C6

F3 – F6

GUITAR BRASS

024 GUT GUITAR 056 TRUMPET 025 ACOUS GUITAR 057 TROMBONE

026 JAZZ GUITAR 058 TUBA 027 ELEC GUITAR 059 MUTE TRUMPET

028 MUTE GUITAR 060 FRENCH HORN 029 DIST GUITAR 1 061 BRASS 030 DIST GUITAR 2 062 SYNTH-BRASS 1

031 GT HARMONICS 063 SYNTH-BRASS 2

E2 – C6 E2 – C6

E2 – D6 E2 – D6

E2 – D6 E2 – D6 E2 – D6

E2 – D6

E1 – C7 E1 – C7 C2 – C7

C2 – C7 C3 – G5 C3 – G5

C3 – C6 C3 – C5

A#3 – A#6 A#1 – D#5

F1 – G3

A#3 – A#5

F2 – F5 C2 – C7 C2 – C7

C2 – C7

— 6 —

TONE NO./TONE NAME

GM OCT AVE RANGE

TONE NO./TONE NAME

GM OCT AVE RANGE

REED SYNTH-SFX

064 SOPRANO SAX 096 PEARL DROP C2 – C7 065 ALTO SAX 097 SOUNDTRACK C2 – C7

066 TENOR SAX 098 CRYSTAL C2 – C7 067 BARITONE SAX 099 ATMOSPHERE C2 – C7

068 OBOE 100 BRIGHTNESS C2 – C7 069 ENGLISH HORN 101 LABYRINTH C2 – C7 070 BASSOON 102 ECHOES C2 – C7

071 CLARINET 103 COSMIC SOUND C2 – C7

F#3 – D#6

C#3 – G#5

F#2 – D#5

C#2 – G#4

A#3 – G6

E3 – A5

A#1 – C5

D3 – G6

PIPE ETHNIC

072 PICCOLO 104 SITAR C3 – F5 073 FLUTE 105 BANJO C3 – C6

074 RECORDER 106 SHAMISEN D3 – G5 075 PAN FLUTE 107 KOTO G3 – C6 076 BOTTLE BLOW 108 THUMB PIANO C3 – G5

077 SHAKUHACHI 109 BAG PIPE C2 – F5 078 WHISTLE 110 FIDDLE G3 – C7 079 OCARINA 111 SHANAI C3 – C5

D5 – C8 C4 – C7

C4 – C7 C4 – C7 C4 – C7

G3 – C6 C4 – C7 C4 – C6

SYNTH-LEAD

080 SYNTH - LEAD 1 112 BELLS C5 – C6 081 SYNTH - LEAD 2 113 AGOGO C4 – C5 082 CALLIOPE 114 STEEL DRUM E3 – E5

083 POWER LEAD 115 WOOD BLOCK C4 – C5 084 METAL LEAD 116 TAIKO C4 – C5 085 ANGEL CHOIR 117 TOM C4 – C5

086 FIFTH LEAD 118 ELEC TOM C4 – C5 087 BASS+LEAD 119 REVERSE CYMBAL C4 – C5

A0 – C8 A0 – C8 C2 – C7

C2 – C7 C2 – C7 C2 – C7

C2 – C7 A0 – C8

PERCUSSION

SYNTH-PAD SFX

C4 – C5

088 FANTASY 089 WARM STRINGS

090 SYNTH-ENS 091 SPACE CHORUS

092 GLASS HARMONICA 093 ILLUSION 094 COUNTRY FARM

095 SYNTH-PAD

C2 – C7 C2 – C7

C2 – C7 C2 – C7 C2 – C7

C2 – C7

120 GT FRET NOISE 121 BREATH NOISE

122 SEASHORE 123 BIRD

124 TELEPHONE 125 HELICOPTER 126 APPLAUSE

127 GUNSHOT

*1 Tone without scale.

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+ 14 hidden pages