CASIO GZ-5 Midi MASTER KEYBOARD Repair Manual

MIDI MASTER KEYBOARD GZ-5 (with price) MIDI MASTER KEYBOARD INTERNAL pp p mp mf f ff VELOCITY OCTAVE SHIFT C1 C2 C3 C4 C5 C6 PROGRAM CHANGE 0 VELOCITY 1 VOLUME 2 PAN 3 EXPRES- SION 4 HOLD 1 5 SOFT 6 EFFECT DEPTH 7 FINE TUNE 8 COARSE TUNE 9 ENTER CONTROL MIDI CH. BEND SENS BEND CURVE MOD. DEPTH PIANO E. PIANO E. GUITAR VIBRAPHONE E. BASS STRINGS BRASS FLUTE SYNTH-LEAD VOLUME POWER OFF MIDI OUT MODE ORGAN ALL NOTE OFF RESET ALL CONTROLLER GM RESET MODULATION PITCH BEND GZ-5

— 2 — ELECTRICAL Current Drain with 7.5 V DC: No Sound Output 35 mA ± 20% Maximum Volume 103 mA ± 20% with keys A2, B2, C3 and D3 pressed in Synth-Lead tone, Volume: Maximum Speaker Output Level at 10 cm away from the speaker 690 mV ± 20% with key C3 pressed in Synth-Lead tone Volume: Maximum Minimum Operating Voltage: 4.8 V SPECIFICATIONS GENERAL (Internal Mode) Number of Keys: 32 Polyphonic: 4-note Preset Tones: 10; Piano, E. Piano, Vibraphone, Organ, E. Guitar, E. Bass, Strings, Brass, Flute, Synth-Lead Controls: Volume control; 5 levels, Pitch bend switch, Modulation switch Built-In Speaker: 6.5 cm dia. 0.5 W input rating: 1 pec. Tuning: A4=442 Hz (fixed) Terminals: MIDI Output, AC Adapter Jack (DV 7.5 V) Power Source: DC: 4 AA size dry batteries Battery life: Approx. 6 hours (SUM-3/R6P) AC: AC Adapter AD-1 Power Consumption: 0.7 W when operating by batteries 1.0 W when operating by an AC adapter Dimensions (HWD): 50 x 399 x 132 mm (1-15/16 x 15-11/16 x 5-3/16 inches) Weight: 0.64 kg (1.4 lbs) including batteries CONTENTS Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Circuit Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Schematic Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Exploded View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

— 3 — MIDI Message Operation switch Setting Opeartion for setting Note No. Keyboard Octave shift switch Octave range See the figure below Velocity 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 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. 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 C4=60 C2 C3 C4 C5 C6 C1 C2 C3 C4 C5 C6

— 4 — Operation 2 The MIDI messages listed below are transmitted when completing the operation shown in the following table. 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. MIDI Message Operation Program change CONTROL + PROGRAM CHANGE, XXX, ENTER Volume CONTROL + VOLUME, XXX, ENTER Pan CONTROL + PAN, XXX, ENTER Expression CONTROL + EXPRESSION, XXX, ENTER Hold 1 CONTROL + HOLD 1, XXX, ENTER Soft pedal CONTROL + SOFT PEDAL, XXX, ENTER Effect depth 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 Control change

— 5 — Initial Value/Setting Range 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 pp (50), p (70), mp (85), mf (95), f (110), ff (127) C1, C2, C3, C4, C5, C6 0 - 127 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.) 0 - 127 1 - 16 Internal Mode Tone Bend Sens Volume MIDI Out Mode Control Program Change Velocity Volume Pan Expression Hold 1 Soft Effect Depth Fine Tune Coarse Tune Velocity Octave Shift Vend Sense Bend Curve Modulation Depth MIDI Channel Initial Setting Piano 2 Max. Initial Setting — — — — — — — — — — mf (95) C4 — 1 (Approx. 0.096 sec) 127 1

— 6 — Program Change 0 - 127 Note ON/OFF Note No.: F0 - C8 (17 - 108) Velocity: 1 - 127 Note ON 0 Note OFF Pitch Bend: 0 - 16383 (14 bits) 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 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 External Effect Depth Controller No.: 91 Controller Value: 0 - 127 MIDI Transmission 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 Fine Tune RPN LSB (100): 1 RPN MSB (101): 0 Data Entry MSB (6): 0 -127 Data Entry LSB (38): 0 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 All Note Off Controller No.: 123 Controller Value: 0 System Exclusive Message GM ON [F0] [7E] [7F] [09] [01] [F7] Tone PIANO E.PIANO VIBRAPHONE ORGAN E.GUITAR Range F3 - C6 F3 - C6 F3 - C6 F3 - C6 F4 - C7 Tone E.BASS STRINGS BRASS FLUTE SYNTH-LEAD Range F2 - C5 F3 - C6 F3 - C6 F3 - C6 F3 - C6 Note Range of Keyboard Play

— 7 — MIDI Implementation Chart 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 Control 01 Change 06, 38 07 10 11 64 67 91 100, 101 121 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 Function ... Transmitted Recognized Remarks 1 channel 1-16 channel — X ❊❊❊❊❊❊❊❊❊❊❊❊❊❊ 17 ~ 108 ❊❊❊❊❊❊❊❊❊❊❊❊❊❊ O 9nH v = 1~127 X 9nH v = 0, 8nH v = ❊❊ X X O O O *1 O O O O O O O *1 O O 0 ~ 127 ❊❊❊❊❊❊❊❊❊❊❊❊❊❊ O *2 X X X X X X O X X *1: Pitch Bend Sens Fine Tune Coarse Tune Version: 1.0 Mode 1 : OMNI ON, POLY Mode 2 : OMNI ON, MONO O : Yes Mode 3 : OMNI OFF, POLY Mode 4 : OMNI OFF, MONO X : No X X X X ❊❊❊❊❊❊❊❊❊❊❊❊❊❊ X ❊❊❊❊❊❊❊❊❊❊❊❊❊❊ X X X X X X X X X X X X X X X X ❊❊❊❊❊❊❊❊❊❊❊❊❊❊ X X X X X X X X X X ❊❊ = No relation Modulation Data entry Volume PAN Expression Hold 1 Soft External effect depth RPN LSB • MSB Reset all controller *2 : GM On *2 : GM On [F0] [7E] [7F] [09] [01] [F7]

— 8 — BLOCK DIAGRAM F#3 G#3 A#3 C#4 D#4 F#4 G#4 A#4 C#5 D#5 F#5 G#5 A#5 F3 G3 A3 B3 C4 D4 E4 F4 G4 A4 B4 C5 D5 E5 F5 G5 A5 B5 C6 Nomenclature of Keys KO0~KO10 KI0~KI7 Keyboard Switches Oscillator Q958, X957 CPU MSM6387-A23 LSI101 Amplifier AN8053N IC101 Speaker VDD MIDI Output OUT KO11 Driver Q101

— 9 — 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 KO4 Pad 0 Pad 1 Pad 2 Pad 3 Pad 4 KO5 Enter Pad 5 Pad 6 Pad 7 Pad 8 Pad 9 KO6 Volume Up Volume Down Bend Sense MIDI CH. Control KO7 Pitch Bend - Pitch Bend + KO8 Modula- tion KO9 Velocity ff Velocity f Velocity mf Velocity mp Velocity p Velocity pp KO10 Internal MIDI Out Octave Shift C6 Octave Shift C5 Octave Shift C4 Octave Shift C3 Octave Shift C2 Octave Shift C1 Pin No. Terminal In/ Out Function 1, 2 TEST1, TEST2 Not used. Connected to ground. 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 Sound waveform output 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 Not used. 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 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.

— 10 — SCHEMATIC DIAGRAMS

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CASIO GZ-5 Midi MASTER KEYBOARD Repair Manual

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