Casio CTK-900 Service Manual

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Other Functions
Transpose: 49 steps (–24 semitones to +24 semitones)
Tuning: Variable (A4 = approximately 440Hz ±100 cents)
LCD: Adjustable contrast
SMF Player Flash memory storage for up to 200 files*
• Supported Format: SMF0
Flash Memory Capacity: 4MB (Shared Area: Approximately 3.5MB (waveform data, accompaniment data, SMF
data))
• Further storage of waveform, accompaniment, and SMF data becomes impossible
after the total of such data reaches approximately 3.5MB.
Terminals
MIDI Terminals: IN, OUT
Sustain/Assignable Terminal : Standard jack (sustain, sostenuto, soft, rhythm start/stop)
Headphone/Output Terminal : Stereo standard jack
Output Impedance: 140Ω
Output Voltage: 4.5V (RMS) MAX
Power Supply Terminal: 9V DC
Power Supply Dual power supply system
Batteries: 6 D-size batteries
Battery Life: Approximately 4 hours continuous operation on manganese batteries
AC Adaptor: AD-5
Auto Power Off: Turns power off approximately six minutes after last key operation. Enabled under
battery power only, can be disabled manually.
Speaker Output: 3W + 3W
Power consumption: 9V 7.7W
Dimensions: 96.0 × 37.5 × 14.6 cm (37
13
/16 × 14
3
/4 × 5
3
/4 inch)
Weight: Approximately 5.6 kg (12.3lbs) (without batteries)
* The same memory area is used to store waveform data, accompaniment data, and SMF data.
ELECTRICAL
Current drain with 9 V DC:
Consumption Current 1200 mA ± 20 %
Consumption Current at idle 260 mA ± 20 %
with 16 keys from C1 to D#2 pressed in 479 OcarinaG
Volume: maximum, Velocity: maximum
Speaker output level (Vrms with 8 Ω load each channel):
with key E1 in 479 OcarinaG
Volume: maximun, Velocity: maximum R Channel: 3900 mV ± 20 %
L Channel: 4200 mV ± 20 %
Phone output level (Vrms with 32 Ω load each channel):
with key E1 in 479 OcarinaG
Volume: maximun, Velocity: maximum R Channel: 430 mV ± 20 %
L Channel: 470 mV ± 20 %
Output level (Vrms with 47 Ω load each channel):
with key E1 in 479 OcarinaG
Volume: maximun, Velocity: maximum R Channel: 2200 mV ± 20 %
L Channel: 2400 mV ± 20 %

Casio CTK-900 Specifications

General

Brand	Casio
Model	CTK-900
Category	Electronic Keyboard
Language	English