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CONTENTS
Specifications .......................................................................................................................... 2
Block Diagram ......................................................................................................................... 3
Circuit Description ................................................................................................................... 4
Troubleshooting ...................................................................................................................... 7
Major Waveforms .................................................................................................................... 8
Schematic Diagrams ............................................................................................................... 9
Printed Circuit Boards ........................................................................................................... 11
Exploded View ...................................................................................................................... 13
Parts List ............................................................................................................................... 15
SPECIFICATIONS
GENERAL
Number of keys: 61
Polyphonic: 12-note
Preset tones: 100
Auto-rhythms: 50, Tempo control: 40 to 255
Accompaniment: CONCERT Chord, Fingered
Song bank: 20-tune
Tuning control: 440 Hz ± 50 cents
Built-in speakers: 4 inch dia. 1 W input rating: 2 pcs
Terminals: Headphone Jack (Output impedance: 50 ohm, Output voltage: 4.6 V (rms) MAX
Power source: 2-way AC or DC source
AC: AC adapter
DC: 6D size dry batteries, Vehicle battery with DC adapter
Power consumption: 7.7 W
Dimensions(HWD): 90 × 910 × 322 mm (3-1/2 × 36-3/16 × 12-11/16 inches)
Weight: 3.9 kg (8 lbs) excluding batteries
ELECTRICAL
Current drain with 9 V DC:
No sound output 120 mA ± 30%
Maximum volume 650 mA ± 30%
with white keys C1 to G2 pressed in Synth-Lead 1
Volume: 9
Phone output Level (Vrms with 8 ohm load each channel):
with key E3 pressed in Synth-Lead 1 80 mV ± 30%
Sound Pressure (at 10 cm away from speaker):
with key E3 pressed in Synth-Lead 1 100 dB ± 10 dB
Minimum operating voltage: 6.0 V
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