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 W , Output voltage: 0.3 V(rms)MAX],
Line Out Jack [Output impedance: 2 KW , 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 output210 mA ? 20%
Maximum volume230 mA ? 20%
with 32 polyphonic in tone No.078
Volume; maximum, Touch response: maximum
Phone output Level (Vrms with 8 W load each channel):
with keys C6 and F6 in tone No.078? 20%85 mV
Line output level (Vrms with 47 KW load each channel):
with keys C6 and F6 in tone No.078? 20%300 mV
Minimum operating voltage:4.0 V
N 2 N |
ACEC
