Casio Electronic Keyboard Gz 5 Users Manual S/M

GZ-5 to the manual b84c78d5-e635-49aa-9ea7-eeb2344a5cc1

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GZ-5

VELOCITY

MIDI MASTER KEYBOARD
pp p mp mf f

ff
ALL NOTE RESET ALL
OFF CONTROLLER

GM RESET

OCTAVE SHIFT
PROGRAM
CHANGE VELOCITY
1
0

EXPRESSION
4

HOLD 1
5

SOFT
6

EFFECT
DEPTH
7

FINE
TUNE
8

E. PIANO VIBRAPHONE ORGAN E. GUITAR

E. BASS

STRINGS

BRASS

FLUTE SYNTH-LEAD

VOLUME
2

PAN
3

COARSE
TUNE
9

CONTROL

MIDI CH.

BEND
SENS

BEND
CURVE

MOD.
DEPTH

C1 C2 C3 C4 C5 C6

PITCH BEND

MODULATION

MODE

ENTER

POWER OFF INTERNAL MIDI OUT
PIANO

VOLUME

GZ-5

MIDI MASTER KEYBOARD

CONTENTS
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Circuit Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Schematic Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Exploded View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

SPECIFICATIONS
GENERAL
(Internal Mode)
Number of Keys:
Polyphonic:
Preset Tones:
Controls:
Built-In Speaker:
Tuning:
Terminals:
Power Source:

Power Consumption:
Dimensions (HWD):
Weight:

32
4-note
10; Piano, E. Piano, Vibraphone, Organ, E. Guitar, E. Bass, Strings,
Brass, Flute, Synth-Lead
Volume control; 5 levels, Pitch bend switch, Modulation switch
6.5 cm dia. 0.5 W input rating: 1 pec.
A4=442 Hz (fixed)
MIDI Output, AC Adapter Jack (DV 7.5 V)
DC: 4 AA size dry batteries
Battery life: Approx. 6 hours (SUM-3/R6P)
AC: AC Adapter AD-1
0.7 W when operating by batteries
1.0 W when operating by an AC adapter
50 x 399 x 132 mm
(1-15/16 x 15-11/16 x 5-3/16 inches)
0.64 kg (1.4 lbs) including batteries

ELECTRICAL
Current Drain with 7.5 V DC:
No Sound Output
Maximum Volume
with keys A2, B2, C3 and D3 pressed
in Synth-Lead tone, Volume: Maximum
Speaker Output Level at 10 cm away from the speaker
with key C3 pressed in Synth-Lead tone
Volume: Maximum
Minimum Operating Voltage:

—2—

35 mA ± 20%
103 mA ± 20%
690 mV ± 20%

4.8 V

OPERATION
Transmitting MIDI Messages
To transmit MIDI messages, set the Mode Switch to the MIDI OUT position.

Operation 1
The note number is transmitted when the corresponding key is pressed.
Use the Octave Shift Switch, and select the position appropriate to the octave range you want. GZ-5 can send
note numbers 17 to 108 but it has 32 keys only.
Velocity is also transmitted when a key is pressed. GZ-5 sends the velocity in accordance with the selected
position of the velocity switch.
Data of pitch bend and modulation is transmitted when the corresponding switch is operated.
The values of the velocity, the pitch bend and the modulation switches are automatically set up to the initial
value when turning on the power.
See the appendix for information about the initial value.
See the following table for instruction how to change the value.
MIDI Message
Note No.
Velocity

Operation switch

Setting

Opeartion for setting

Keyboard
Octave shift switch

Octave range

See the figure below

Keyboard
Velocity switch

Velocity value

CONTROL + VELOCITY, XXX, ENTER

Pitch Bend

Pitch bend switch

Bend sense
Bend curve

BEND SENS, XXX, ENTER
BEND CURVE, X, ENTER

Modulation

Modulation switch

Modulation depth

MOD.DEPTH, XXX, ENTER

Example of operation :

CONTROL + VELOCITY, XXX, ENTER
Press CONTROL button and VELOCITY button at the same time.
Use the 10-key pads, enter a 3-digit number.
Press ENTER button.

Position of the octave switch and octave range

C1

C2

C3

C4

C5

C6

C4=60

C1
C2

C3
C4
C5
C6

—3—

Operation 2
The MIDI messages listed below are transmitted when completing the operation shown in the following
table.
MIDI Message

Operation

Program change

CONTROL + PROGRAM CHANGE, XXX, ENTER

Control change

Volume CONTROL + VOLUME, XXX, ENTER
Pan CONTROL + PAN, XXX, ENTER
Expression

CONTROL + EXPRESSION, XXX, ENTER

Hold 1 CONTROL + HOLD 1, XXX, ENTER
Soft pedal
Effect depth

CONTROL + SOFT PEDAL, XXX, ENTER
CONTROL + EFFECT DEPTH, XXX, ENTER

Fine tune CONTROL + FINE TUNE, XXX, ENTER
Coarse tune

CONTROL + COARSE TUNE, XXX ENTER

All notes off

CONTROL + MIDI CH.

Reset all controller MIDI CH. + BEND SENSE
General MIDI reset

BEND CURVE + MOD. DEPTH

MIDI channel

MIDI CH., XXX, ENTER

Example of operation :

CONTROL + VELOCITY, XXX, ENTER
Press CONTROL button and VELOCITY button at the same time.
Use the 10-key pads, enter a 3-digit number.
Press ENTER button.

Notes: 1. See the appendix for information about a value to be entered, "XXX".
2. For details of MIDI message and operation, see GZ-5 operation manual.

—4—

Initial Value/Setting Range
Internal Mode

Initial Setting

Tone

Piano

Bend Sens

2

Volume

Max.

MIDI Out Mode

Initial Setting

Control
Program Change
Velocity
Volume
Pan
Expression
Hold 1
Soft
Effect Depth
Fine Tune
Coarse Tune

—
—
—
—
—
—
—
—
—
—

Velocity

Setting Range
Piano, E. Piano, Vibraphone, Organ,
E.Guitar, E.Bass, Strings, Brass, Flute,
Synth-Lead
0-3
5 levels

Setting Range

0 - 127
1 - 127
0 - 127
0 - 127
0 - 127
0 - 127
0 - 127
0 - 127
0 - 127
0 - 127

mf (95)

pp (50), p (70), mp (85), mf (95), f (110),
ff (127)

Octave Shift

C4

C1, C2, C3, C4, C5, C6

Vend Sense

—

0 - 127

Bend Curve

1
(Approx. 0.096 sec)

Modulation Depth
MIDI Channel

0 (approx. 0.048 sec.), 1 (approx. 0.096 sec)
2 (approx. 0.192 sec.), 3 (approx. 0.384 sec.)
4 (approx. 0.768 sec.)

127

0 - 127

1

1 - 16

—5—

MIDI Transmission
Program Change

0 - 127

Registered Parameter Number
Pitch Bend Sensitivity
RPN LSB (100):
0
RPN MSB (101):
0
Data Entry MSB (6):
0 - 127
Data Entry LSB (38): 0

Note ON/OFF
Note No.: F0 - C8 (17 - 108)
Velocity:
1 - 127 Note ON
0
Note OFF
Pitch Bend:

0 - 16383 (14 bits)

Fine Tune
RPN LSB (100):
1
RPN MSB (101):
0
Data Entry MSB (6):
0 -127
Data Entry LSB (38): 0

Control Change
Modulation Controller No.: 1
Controller Value: 0 - 127
Volume

Controller No.: 7
Controller Value: 0 - 127

PAN

Controller No.: 10
Controller Value: 0 - 127

Coarse Tune
RPN LSB (100):
2
RPN MSB (101):
0
Data Entry MSB (6):
0 - 127
Data Entry LSB (38): 0
Channel Mode Message
Reset All Controller
Controller No.: 121
Controller Value: 0

Expression Controller No.: 11
Controller Value: 0 - 127
HOLD 1

Controller No.: 64
Controller Value: 0 - 127

Soft Pedal

Controller No.: 67
Controller Value: 0 - 127

All Note Off Controller No.: 123
Controller Value: 0
System Exclusive Message
GM ON
[F0] [7E] [7F] [09] [01] [F7]

External Effect Depth
Controller No.: 91
Controller Value: 0 - 127

Note Range of Keyboard Play
Tone

Range

Tone

Range

PIANO

F3 - C6

E.BASS

F2 - C5

E.PIANO

F3 - C6

STRINGS

F3 - C6

VIBRAPHONE

F3 - C6

BRASS

F3 - C6

ORGAN

F3 - C6

FLUTE

F3 - C6

E.GUITAR

F4 - C7

SYNTH-LEAD

F3 - C6

—6—

MIDI Implementation Chart
Function ...

Version: 1.0

Transmitted

Recognized

Remarks

Basic
Channel

Default
Changed

1 channel
1-16 channel

X
X

Mode

Default
Messages
Altered

—
X
❊❊❊❊❊❊❊❊❊❊❊❊❊❊

X
X
❊❊❊❊❊❊❊❊❊❊❊❊❊❊

Note
Number: True voice

17 ~ 108
❊❊❊❊❊❊❊❊❊❊❊❊❊❊

X
❊❊❊❊❊❊❊❊❊❊❊❊❊❊

Velocity

Note ON
Note OFF

O 9nH v = 1~127
X 9nH v = 0, 8nH v = ❊❊

X
X

Key's
Ch's

X
X

X
X

Pitch Bender

O

X

Control
Change

O
O *1
O
O
O
O
O
O
O *1
O

X
X
X
X
X
X
X
X
X
X

Program
Change : True #

O 0 ~ 127
❊❊❊❊❊❊❊❊❊❊❊❊❊❊

X
❊❊❊❊❊❊❊❊❊❊❊❊❊❊

System Exclusive

O *2

X

System
Common

X
X
X

X
X
X

System
: Clock
Real Time : Commands

X
X

X
X

Aux
: Local ON/OFF
Messages : All notes OFF
: Active Sense
: Reset

X
O
X
X

X
X
X
X

Remarks

*1: Pitch Bend Sens
Fine Tune
Coarse Tune

*2 : GM On
[F0] [7E] [7F] [09] [01] [F7]

After
Touch

01
06, 38
07
10
11
64
67
91
100, 101
121

: Song Pos
: Song Sel
: Tune

Mode 1 : OMNI ON, POLY
Mode 3 : OMNI OFF, POLY

Mode 2 : OMNI ON, MONO
Mode 4 : OMNI OFF, MONO
—7—

❊❊ = No relation

Modulation
Data entry
Volume
PAN
Expression
Hold 1
Soft
External effect depth
RPN LSB • MSB
Reset all controller

*2 : GM On

O : Yes
X : No

BLOCK DIAGRAM
KO0~KO10

MIDI Output
Driver
Q101

KO11
CPU
MSM6387-A23

KI0~KI7

LSI101
Amplifier
AN8053N
IC101

OUT

Keyboard

Speaker
VDD

Switches
Oscillator
Q958, X957

Nomenclature of Keys

F#3 G#3 A#3

F3

G3

A3

B3

C#4 D#4

C4

D4

E4

F#4 G#4 A#4

F4

G4

A4

B4

—8—

C#5 D#5

C5

D5

E5

F#5 G#5 A#5

F5

G5

A5

B5

C6

CIRCUIT DESCRIPTION
Key Matrix
KI0

KI1

KI2

KI3

KI4

KI5

KI6

KI7

KO0

F3

F#3

G3

G#3

A3

A#3

B3

C4

KO1

C#4

D4

D#4

E4

F4

F#4

G4

G#4

KO2

A4

A#4

B4

C5

C#5

D5

D#5

E5

KO3

F5

F#5

G5

G#5

A5

A#5

B5

C6

Pad 0

Pad 1

Pad 2

Pad 3

Pad 4

Pad 5

Pad 6

Pad 7

Pad 8

Pad 9

Volume
Up

Volume
Down

Bend
Sense

MIDI CH.

Control

KO4
KO5

Enter

KO6
Pitch
Bend -

KO7

Pitch
Bend +
Modulation

KO8
KO9
KO10

Internal

MIDI Out

Velocity
ff

Velocity
f

Velocity
mf

Velocity
mp

Velocity
p

Velocity
pp

Octave
Shift C6

Octave
Shift C5

Octave
Shift C4

Octave
Shift C3

Octave
Shift C2

Octave
Shift C1

CPU (LSI101: MSM6387-A23)
Containing a MIDI controller, the CPU outputs MIDI messages in accordance with the pressed keys and
buttons.
The following table shows the pin functions of LSI101.

Pin No.

Terminal

In/ Out

Function

1, 2

TEST1, TEST2

3

RESET

In

Power ON reset input. On: +6V Off: 0V

4

AVDD

In

+5 V sorce for the built-in DAC

5

OUT

Out

6

AGND

In

Ground (0 V) source for the built-in DAC

7

GND

In

Ground (0 V) source

8

COSI

In

21.725 MHz clock pulse input

9

COSO

10

VDD

In

+5 V source

11 ~ 18

KI0 ~ KI7

In

Input terminal from keys and switches

19

KO11

Out

MIDI signal output

20 ~ 30

KO10 ~ KO0

Out

Key and switch scan signal output

Not used. Connected to ground.

Sound waveform output

Not used.

—9—

SCHEMATIC DIAGRAMS

— 10 —

Main PCB JCM558-MA1M

— 11 —

EXPLODED VIEW
2

1
3

4
5
5
6

7

8

9

10

11
12-2

12

12-1
13

14

— 12 —

PARTS LIST
GZ-5

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

12
LSI101
IC101
Q101
Q958
X959
D101~D158,
D160, D163
D159
D161
LED101
J101
J102
12-1
12-2

N

N
N
N
N
N
N

N
N
N

1
2
3
4
5
6
7
8
9
10
11
13
14

Notes:

Code No.

Parts Name

Electrical Parts
6923 6680 PCB ass'y JCM558-MA1M
2012 0196 LSI
2114 3269 IC
2220 1387 Transistor
2220 1387 Transistor
2590 1897 Ceramic oscillator
2390 1344 Diode
2360 2429 Zener diode
2390 0371 Diode
2370 1106 LED
3501 3731 Power jack
3501 4830 DIN jack
6917 1762 Battery spring (+)
6922 1760 Battery spring (-)
Mechanical Parts
6906 7751 Slide knob, Gray
6906 7761 Slide knob, Purple
6923 9070 Upper case sub ass'y
3831 0812 Speaker
6909 5890 Slide contact
6923 6740 Bender knob
6923 6730 Rubber button
6917 1571 White key set
6917 1580 Black key set
6917 1591 Key contact rubber
6923 6750 Button contact rubber
6923 9060 Lower case sub ass'y
6906 7931 Battery cover

N – New parts
M – Minimum order/supply quantity
R – Rank

— 13 —

Specification

Q

FOB Japan
N.R.Yen
R
Unit Price

M240209*1
MSM6387-A23
AN8053N
2SC1740SQ-TP-T
2SC1740SQ-TP-T
EFO-EN2175C4
1SS133T-77-T

1
1
1
1
1
1
60

1,650
430
110
13
13
60
3

B
A
A
B
B
B
B

MTZJ4.3B-T77-T
DSK10B-BT-T
MPR3338S-B99
HEC2305-01-250
YKF51-5050
M410913B-1
M412226-1

1
1
1
1
1
1
1

8
11
24
30
70
5
10

B
B
B
B
B
C
C

M311859A-3
M311859A-4
M340288*1
0023-249-0-0013
CSB-12D
M340143-1
M340142-1
M210610A-1
M210609-1
M210605A-1
M340144-1
M340287*1
M312197A*6

2
1
1
1
3
2
1
1
1
1
4
1
1

12
12
570
150
35
80
200
69
41
80
15
450
35

B
B
C
B
B
C
C
A
A
A
B
C
B

MA0700951A



---

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Create Date                     : 1997:09:13 21:15:56
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Keywords                        : EMI
Subject                         : JUL.95
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Title                           : S/M GZ-5
Author                          : MAS
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Page Count                      : 15
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