Casio CTK900 User Guide - Page 80
Problem, Possible Cause, Action, See
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Troubleshooting Troubleshooting Problem No keyboard Sound Any of the following symptoms while using battery power. Possible Cause Action See page 1. Power supply problem. 2. Power is not turned on. 3. Volume setting is too low. 4. Playing in the accompaniment keyboard area while the MODE button setting is CASIO CHORD or FINGERED. 5. Local Control is off. 6. Mixer channel 1 is turned off. 7. Mixer channel 1 volume setting is too low. 1. Correctly attach the AC E-12, 13 adaptor, make sure that batteries poles (+/-) are facing correctly, and check to make sure that batteries are not dead. 2. Press the POWER button to E-16 turn on power. 3. Use the MAIN VOLUME knob E-16 to increase volume. 4. None of the accompaniment E-28 mode indicators are lit, which means Auto Accompaniment is turned off. 5. Turn on Local Control. E-70 6. Use the Mixer to turn channel 1 E-36 on. 7. Use the Mixer to raise the E-37, 38 volume setting for channel 1. Low battery power Replace the batteries with a set of E-12, 13 new ones or use the AC adaptor. • Dim power indicator • Instrument does not turn on. • Display that is flickering, dim, or difficult to read • Abnormally low speaker/headphone volume • Distortion of sound output • Occasional interruption of sound when playing at high volumes • Sudden power failure when playing at high volumes • Flickering or dimming of the display when playing at high volume • Continued sound output even after you release a key • A tone that is totally different from the one that is selected. • Abnormal rhythm pattern and demo tune play • Loss of power, sound distortion, or low volume when playing from a connected computer or MIDI device Auto Accompaniment does not sound. Sound output does not change when key pressure is varied. Playing the keyboard sounds two tones. Different tones sound when keys in different keyboard ranges are pressed. The key or tuning does not match when playing along with another MIDI machine. Parts suddenly drop out during song memory playback. Some parts do not play at all during song memory playback. 1. Accompaniment volume is set to 000. 2. Auto Accompaniment part Channels 6 through 10 are turned off. 3. Auto Accompaniment part Channels 6 through 10 volume setting is too low. Touch response is turned off. Layer is turned on. Split is turned on. 1. The tuning or transpose parameter is set to a value other than 00. 2. Mixer coarse tune, fine tune, and/or octave shift settings are values other than 00. The number of tones being played at the same time exceeds the keyboard's limitation. 1. Channels are turned off. 2. Volume setting is too low. 1. Use the ACCOMP VOLUME button to increase the volume. 2. Use the Mixer to turn the channels on. 3. Use the Mixer to raise the volume setting for the applicable channel. Press the TRANSPOSE/ FUNCTION button to turn it on. Press the LAYER button to turn off layering. Press the SPLIT button to turn off split. 1. Change the transpose or tuning parameter value to 00. 2. Use the Mixer to change the coarse tune, fine tune, and/or octave shift settings to 00. Use the Mixer to turn unneeded channels off and decrease the number of parts being played. 1. Use the Mixer to turn channels on. 2. Use the Mixer to check the volume setting. E-35 E-36 E-37, 38 E-64 E-61 E-62 E-64, 65 E-38 E-36 E-36 E-37, 38 E-78 707A-E-080A