Casio ctk 50 service manual

Page 1

Ñ 2 Ñ 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 SPECIFICATIONSCONTENTS 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