Casio CTK-50, Руководство по обслуживанию

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ELECTRICAL
Nominal Limit
Current drain with 9V DC:
No sound output 50 mA 50 mA
±
30%
Maximum volume 515 mA 515 mA
±
30%
with keys C1, D1, E1 and F1 pressed
in Car-Horn tone, Volume; Maximum
Sound Pressure Level at 10 cm away from speaker: 108 dB 108
±
10 dB
with key C4 pressed in Car-Horn tone
Volume; Maximum
Minimum operating voltage: 5.8 V 6.0 V
GENERAL
Number of keys: 49
Polyphonic: 8-note
Preset tones: 100
Auto-rhythms: 100
Auto-accompaniment: CASIO Chord/Fingered
Demonstration tune: Classical Medley
Built-in speakers: 10 cm dia. 2.0W Input Rating: 1 pc.
Terminal: AC Adapter Jack (DC 9 V)
Power source: 2-way AC or DC source
AC: AC adapter
DC: 6 AA size dry batteries
Power consumption: 6.0 W
Dimensions: 79 x 766 x 269 mm (HWD)
(3-1/8 x 33 x 10-5/8 inches) (HWD)
Weight: 2.8 kg (6.2 lbs) excluding batteries
SPECIFICATIONS
CONTENTS
Specification .............................................................................. 2
Block Diagram ........................................................................... 3
Circuit Description ..................................................................... 4
Troubleshooting ........................................................................ 7
Major Waveforms ...................................................................... 8
Schematic Diagrams ................................................................. 9
PCB View ................................................................................ 11
Exploded View ........................................................................ 12
Parts List ................................................................................. 13